/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label55.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 02:01:04,558 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 02:01:04,640 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 02:01:04,647 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 02:01:04,647 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 02:01:04,682 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 02:01:04,682 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 02:01:04,683 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 02:01:04,683 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 02:01:04,687 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 02:01:04,687 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 02:01:04,688 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 02:01:04,688 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 02:01:04,689 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 02:01:04,690 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 02:01:04,690 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 02:01:04,690 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 02:01:04,690 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 02:01:04,690 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 02:01:04,691 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 02:01:04,691 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 02:01:04,691 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 02:01:04,691 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 02:01:04,692 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 02:01:04,692 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 02:01:04,692 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 02:01:04,692 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 02:01:04,692 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 02:01:04,693 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 02:01:04,693 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 02:01:04,694 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 02:01:04,694 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 02:01:04,694 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 02:01:04,694 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 02:01:04,695 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 02:01:04,695 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 02:01:04,695 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 02:01:04,695 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 02:01:04,695 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 02:01:04,695 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 02:01:04,695 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 02:01:04,696 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 02:01:04,696 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 02:01:04,696 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 02:01:04,960 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 02:01:04,983 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 02:01:04,986 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 02:01:04,987 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 02:01:04,987 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 02:01:04,988 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label55.c [2023-12-19 02:01:06,148 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 02:01:06,509 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 02:01:06,511 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label55.c [2023-12-19 02:01:06,527 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/243a6e08a/14f2c907073b4287adc5b2aa6ee0ced9/FLAG8203c7e58 [2023-12-19 02:01:06,537 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/243a6e08a/14f2c907073b4287adc5b2aa6ee0ced9 [2023-12-19 02:01:06,539 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 02:01:06,540 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 02:01:06,541 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 02:01:06,541 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 02:01:06,545 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 02:01:06,546 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 02:01:06" (1/1) ... [2023-12-19 02:01:06,547 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51c61e81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:01:06, skipping insertion in model container [2023-12-19 02:01:06,547 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 02:01:06" (1/1) ... [2023-12-19 02:01:06,636 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 02:01:07,112 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label55.c[56086,56099] [2023-12-19 02:01:07,162 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 02:01:07,176 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 02:01:07,398 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label55.c[56086,56099] [2023-12-19 02:01:07,413 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 02:01:07,433 INFO L206 MainTranslator]: Completed translation [2023-12-19 02:01:07,433 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:01:07 WrapperNode [2023-12-19 02:01:07,433 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 02:01:07,435 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 02:01:07,435 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 02:01:07,436 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 02:01:07,442 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:01:07" (1/1) ... [2023-12-19 02:01:07,493 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:01:07" (1/1) ... [2023-12-19 02:01:07,584 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1772 [2023-12-19 02:01:07,584 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 02:01:07,585 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 02:01:07,585 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 02:01:07,585 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 02:01:07,595 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:01:07" (1/1) ... [2023-12-19 02:01:07,595 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:01:07" (1/1) ... [2023-12-19 02:01:07,606 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:01:07" (1/1) ... [2023-12-19 02:01:07,657 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]. [2023-12-19 02:01:07,657 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:01:07" (1/1) ... [2023-12-19 02:01:07,657 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:01:07" (1/1) ... [2023-12-19 02:01:07,699 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:01:07" (1/1) ... [2023-12-19 02:01:07,713 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:01:07" (1/1) ... [2023-12-19 02:01:07,729 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:01:07" (1/1) ... [2023-12-19 02:01:07,738 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:01:07" (1/1) ... [2023-12-19 02:01:07,747 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 02:01:07,748 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 02:01:07,749 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 02:01:07,749 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 02:01:07,750 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:01:07" (1/1) ... [2023-12-19 02:01:07,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 02:01:07,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 02:01:07,783 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) [2023-12-19 02:01:07,809 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 [2023-12-19 02:01:07,817 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 02:01:07,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 02:01:07,817 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 02:01:07,817 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 02:01:07,923 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 02:01:07,925 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 02:01:09,641 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 02:01:09,716 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 02:01:09,717 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 02:01:09,717 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 02:01:09 BoogieIcfgContainer [2023-12-19 02:01:09,717 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 02:01:09,719 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 02:01:09,719 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 02:01:09,722 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 02:01:09,723 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 02:01:06" (1/3) ... [2023-12-19 02:01:09,723 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21badbf2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 02:01:09, skipping insertion in model container [2023-12-19 02:01:09,723 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:01:07" (2/3) ... [2023-12-19 02:01:09,724 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21badbf2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 02:01:09, skipping insertion in model container [2023-12-19 02:01:09,724 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 02:01:09" (3/3) ... [2023-12-19 02:01:09,725 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label55.c [2023-12-19 02:01:09,743 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 02:01:09,743 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 02:01:09,806 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 02:01:09,813 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;@45568d5a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 02:01:09,813 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 02:01:09,819 INFO L276 IsEmpty]: Start isEmpty. Operand has 240 states, 238 states have (on average 1.9201680672268908) internal successors, (457), 239 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:01:09,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-19 02:01:09,831 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 02:01:09,832 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 02:01:09,833 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 02:01:09,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 02:01:09,837 INFO L85 PathProgramCache]: Analyzing trace with hash 2051895673, now seen corresponding path program 1 times [2023-12-19 02:01:09,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 02:01:09,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347451149] [2023-12-19 02:01:09,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 02:01:09,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 02:01:10,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 02:01:10,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 02:01:10,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 02:01:10,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347451149] [2023-12-19 02:01:10,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347451149] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 02:01:10,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 02:01:10,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 02:01:10,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695646864] [2023-12-19 02:01:10,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 02:01:10,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 02:01:10,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 02:01:10,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 02:01:10,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 02:01:10,441 INFO L87 Difference]: Start difference. First operand has 240 states, 238 states have (on average 1.9201680672268908) internal successors, (457), 239 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 80.5) internal successors, (161), 2 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:01:10,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 02:01:10,531 INFO L93 Difference]: Finished difference Result 479 states and 913 transitions. [2023-12-19 02:01:10,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 02:01:10,534 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 80.5) internal successors, (161), 2 states have internal predecessors, (161), 0 states have call successors, (0), 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 161 [2023-12-19 02:01:10,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 02:01:10,544 INFO L225 Difference]: With dead ends: 479 [2023-12-19 02:01:10,545 INFO L226 Difference]: Without dead ends: 238 [2023-12-19 02:01:10,553 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 02:01:10,557 INFO L413 NwaCegarLoop]: 392 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 02:01:10,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 392 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 02:01:10,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2023-12-19 02:01:10,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2023-12-19 02:01:10,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 237 states have (on average 1.6540084388185654) internal successors, (392), 237 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:01:10,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 392 transitions. [2023-12-19 02:01:10,607 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 392 transitions. Word has length 161 [2023-12-19 02:01:10,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 02:01:10,608 INFO L495 AbstractCegarLoop]: Abstraction has 238 states and 392 transitions. [2023-12-19 02:01:10,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 80.5) internal successors, (161), 2 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:01:10,608 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 392 transitions. [2023-12-19 02:01:10,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-19 02:01:10,611 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 02:01:10,611 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 02:01:10,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-19 02:01:10,612 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 02:01:10,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 02:01:10,612 INFO L85 PathProgramCache]: Analyzing trace with hash -1773857272, now seen corresponding path program 1 times [2023-12-19 02:01:10,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 02:01:10,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572298973] [2023-12-19 02:01:10,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 02:01:10,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 02:01:10,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 02:01:11,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 02:01:11,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 02:01:11,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572298973] [2023-12-19 02:01:11,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572298973] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 02:01:11,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 02:01:11,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 02:01:11,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788065298] [2023-12-19 02:01:11,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 02:01:11,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 02:01:11,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 02:01:11,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 02:01:11,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 02:01:11,256 INFO L87 Difference]: Start difference. First operand 238 states and 392 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 2 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:01:12,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 02:01:12,166 INFO L93 Difference]: Finished difference Result 699 states and 1161 transitions. [2023-12-19 02:01:12,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 02:01:12,167 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 2 states have internal predecessors, (161), 0 states have call successors, (0), 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 161 [2023-12-19 02:01:12,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 02:01:12,171 INFO L225 Difference]: With dead ends: 699 [2023-12-19 02:01:12,171 INFO L226 Difference]: Without dead ends: 462 [2023-12-19 02:01:12,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 02:01:12,174 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 79 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 618 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 618 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-19 02:01:12,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 83 Invalid, 776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 618 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-19 02:01:12,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2023-12-19 02:01:12,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 448. [2023-12-19 02:01:12,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 448 states, 447 states have (on average 1.6353467561521253) internal successors, (731), 447 states have internal predecessors, (731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:01:12,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 731 transitions. [2023-12-19 02:01:12,215 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 731 transitions. Word has length 161 [2023-12-19 02:01:12,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 02:01:12,217 INFO L495 AbstractCegarLoop]: Abstraction has 448 states and 731 transitions. [2023-12-19 02:01:12,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 2 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:01:12,217 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 731 transitions. [2023-12-19 02:01:12,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2023-12-19 02:01:12,222 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 02:01:12,223 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 02:01:12,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-19 02:01:12,223 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 02:01:12,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 02:01:12,224 INFO L85 PathProgramCache]: Analyzing trace with hash 990486036, now seen corresponding path program 1 times [2023-12-19 02:01:12,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 02:01:12,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184578605] [2023-12-19 02:01:12,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 02:01:12,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 02:01:12,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 02:01:12,561 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 02:01:12,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 02:01:12,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184578605] [2023-12-19 02:01:12,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184578605] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 02:01:12,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 02:01:12,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 02:01:12,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962885525] [2023-12-19 02:01:12,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 02:01:12,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 02:01:12,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 02:01:12,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 02:01:12,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 02:01:12,572 INFO L87 Difference]: Start difference. First operand 448 states and 731 transitions. Second operand has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 2 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:01:13,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 02:01:13,304 INFO L93 Difference]: Finished difference Result 1332 states and 2179 transitions. [2023-12-19 02:01:13,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 02:01:13,305 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 2 states have internal predecessors, (167), 0 states have call successors, (0), 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 167 [2023-12-19 02:01:13,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 02:01:13,309 INFO L225 Difference]: With dead ends: 1332 [2023-12-19 02:01:13,309 INFO L226 Difference]: Without dead ends: 885 [2023-12-19 02:01:13,311 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 02:01:13,312 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 285 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 685 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 02:01:13,313 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [285 Valid, 112 Invalid, 709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 685 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 02:01:13,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 885 states. [2023-12-19 02:01:13,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 885 to 881. [2023-12-19 02:01:13,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 881 states, 880 states have (on average 1.6170454545454545) internal successors, (1423), 880 states have internal predecessors, (1423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:01:13,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 881 states to 881 states and 1423 transitions. [2023-12-19 02:01:13,340 INFO L78 Accepts]: Start accepts. Automaton has 881 states and 1423 transitions. Word has length 167 [2023-12-19 02:01:13,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 02:01:13,341 INFO L495 AbstractCegarLoop]: Abstraction has 881 states and 1423 transitions. [2023-12-19 02:01:13,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 2 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:01:13,341 INFO L276 IsEmpty]: Start isEmpty. Operand 881 states and 1423 transitions. [2023-12-19 02:01:13,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2023-12-19 02:01:13,344 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 02:01:13,344 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 02:01:13,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-19 02:01:13,344 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 02:01:13,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 02:01:13,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1176829972, now seen corresponding path program 1 times [2023-12-19 02:01:13,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 02:01:13,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921206708] [2023-12-19 02:01:13,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 02:01:13,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 02:01:13,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 02:01:13,656 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 02:01:13,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 02:01:13,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921206708] [2023-12-19 02:01:13,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921206708] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 02:01:13,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 02:01:13,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 02:01:13,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552370316] [2023-12-19 02:01:13,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 02:01:13,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 02:01:13,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 02:01:13,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 02:01:13,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 02:01:13,659 INFO L87 Difference]: Start difference. First operand 881 states and 1423 transitions. Second operand has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 2 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:01:14,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 02:01:14,388 INFO L93 Difference]: Finished difference Result 2574 states and 4171 transitions. [2023-12-19 02:01:14,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 02:01:14,389 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 2 states have internal predecessors, (167), 0 states have call successors, (0), 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 167 [2023-12-19 02:01:14,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 02:01:14,395 INFO L225 Difference]: With dead ends: 2574 [2023-12-19 02:01:14,395 INFO L226 Difference]: Without dead ends: 1694 [2023-12-19 02:01:14,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 02:01:14,398 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 216 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 569 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 02:01:14,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 190 Invalid, 695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 569 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 02:01:14,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1694 states. [2023-12-19 02:01:14,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1694 to 1694. [2023-12-19 02:01:14,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1694 states, 1693 states have (on average 1.3987005316007088) internal successors, (2368), 1693 states have internal predecessors, (2368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:01:14,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1694 states to 1694 states and 2368 transitions. [2023-12-19 02:01:14,432 INFO L78 Accepts]: Start accepts. Automaton has 1694 states and 2368 transitions. Word has length 167 [2023-12-19 02:01:14,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 02:01:14,433 INFO L495 AbstractCegarLoop]: Abstraction has 1694 states and 2368 transitions. [2023-12-19 02:01:14,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 2 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:01:14,433 INFO L276 IsEmpty]: Start isEmpty. Operand 1694 states and 2368 transitions. [2023-12-19 02:01:14,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2023-12-19 02:01:14,436 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 02:01:14,436 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 02:01:14,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-19 02:01:14,437 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 02:01:14,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 02:01:14,437 INFO L85 PathProgramCache]: Analyzing trace with hash -627339811, now seen corresponding path program 1 times [2023-12-19 02:01:14,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 02:01:14,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678872482] [2023-12-19 02:01:14,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 02:01:14,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 02:01:14,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 02:01:14,734 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 02:01:14,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 02:01:14,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678872482] [2023-12-19 02:01:14,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678872482] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 02:01:14,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 02:01:14,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 02:01:14,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791782630] [2023-12-19 02:01:14,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 02:01:14,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 02:01:14,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 02:01:14,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 02:01:14,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 02:01:14,737 INFO L87 Difference]: Start difference. First operand 1694 states and 2368 transitions. Second operand has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 2 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:01:15,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 02:01:15,531 INFO L93 Difference]: Finished difference Result 5061 states and 7080 transitions. [2023-12-19 02:01:15,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 02:01:15,532 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 2 states have internal predecessors, (173), 0 states have call successors, (0), 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 173 [2023-12-19 02:01:15,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 02:01:15,543 INFO L225 Difference]: With dead ends: 5061 [2023-12-19 02:01:15,544 INFO L226 Difference]: Without dead ends: 3368 [2023-12-19 02:01:15,547 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 02:01:15,552 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 275 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 738 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 738 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 02:01:15,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [275 Valid, 214 Invalid, 761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 738 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 02:01:15,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3368 states. [2023-12-19 02:01:15,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3368 to 3359. [2023-12-19 02:01:15,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3359 states, 3358 states have (on average 1.3847528290649196) internal successors, (4650), 3358 states have internal predecessors, (4650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:01:15,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3359 states to 3359 states and 4650 transitions. [2023-12-19 02:01:15,627 INFO L78 Accepts]: Start accepts. Automaton has 3359 states and 4650 transitions. Word has length 173 [2023-12-19 02:01:15,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 02:01:15,628 INFO L495 AbstractCegarLoop]: Abstraction has 3359 states and 4650 transitions. [2023-12-19 02:01:15,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 2 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:01:15,628 INFO L276 IsEmpty]: Start isEmpty. Operand 3359 states and 4650 transitions. [2023-12-19 02:01:15,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2023-12-19 02:01:15,633 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 02:01:15,634 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 02:01:15,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-19 02:01:15,634 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 02:01:15,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 02:01:15,635 INFO L85 PathProgramCache]: Analyzing trace with hash 816073928, now seen corresponding path program 1 times [2023-12-19 02:01:15,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 02:01:15,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790445942] [2023-12-19 02:01:15,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 02:01:15,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 02:01:15,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 02:01:15,856 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 02:01:15,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 02:01:15,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790445942] [2023-12-19 02:01:15,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790445942] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 02:01:15,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 02:01:15,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 02:01:15,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874091572] [2023-12-19 02:01:15,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 02:01:15,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 02:01:15,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 02:01:15,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 02:01:15,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 02:01:15,859 INFO L87 Difference]: Start difference. First operand 3359 states and 4650 transitions. Second operand has 3 states, 3 states have (on average 58.0) internal successors, (174), 2 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:01:16,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 02:01:16,699 INFO L93 Difference]: Finished difference Result 10005 states and 13850 transitions. [2023-12-19 02:01:16,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 02:01:16,700 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 2 states have internal predecessors, (174), 0 states have call successors, (0), 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 174 [2023-12-19 02:01:16,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 02:01:16,724 INFO L225 Difference]: With dead ends: 10005 [2023-12-19 02:01:16,725 INFO L226 Difference]: Without dead ends: 6647 [2023-12-19 02:01:16,732 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 02:01:16,734 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 243 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 635 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-19 02:01:16,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 222 Invalid, 726 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 635 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-19 02:01:16,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6647 states. [2023-12-19 02:01:16,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6647 to 6640. [2023-12-19 02:01:16,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6640 states, 6639 states have (on average 1.3285133303208314) internal successors, (8820), 6639 states have internal predecessors, (8820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:01:16,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6640 states to 6640 states and 8820 transitions. [2023-12-19 02:01:16,887 INFO L78 Accepts]: Start accepts. Automaton has 6640 states and 8820 transitions. Word has length 174 [2023-12-19 02:01:16,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 02:01:16,888 INFO L495 AbstractCegarLoop]: Abstraction has 6640 states and 8820 transitions. [2023-12-19 02:01:16,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 2 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:01:16,888 INFO L276 IsEmpty]: Start isEmpty. Operand 6640 states and 8820 transitions. [2023-12-19 02:01:16,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-12-19 02:01:16,897 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 02:01:16,897 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 02:01:16,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-19 02:01:16,898 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 02:01:16,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 02:01:16,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1718626995, now seen corresponding path program 1 times [2023-12-19 02:01:16,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 02:01:16,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110597163] [2023-12-19 02:01:16,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 02:01:16,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 02:01:16,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 02:01:17,042 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-19 02:01:17,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 02:01:17,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110597163] [2023-12-19 02:01:17,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110597163] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 02:01:17,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 02:01:17,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 02:01:17,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466011806] [2023-12-19 02:01:17,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 02:01:17,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 02:01:17,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 02:01:17,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 02:01:17,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 02:01:17,045 INFO L87 Difference]: Start difference. First operand 6640 states and 8820 transitions. Second operand has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 2 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:01:18,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 02:01:18,020 INFO L93 Difference]: Finished difference Result 18402 states and 24735 transitions. [2023-12-19 02:01:18,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 02:01:18,021 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 2 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 175 [2023-12-19 02:01:18,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 02:01:18,070 INFO L225 Difference]: With dead ends: 18402 [2023-12-19 02:01:18,071 INFO L226 Difference]: Without dead ends: 12169 [2023-12-19 02:01:18,079 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 02:01:18,082 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 249 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-19 02:01:18,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 88 Invalid, 780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 585 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-19 02:01:18,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12169 states. [2023-12-19 02:01:18,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12169 to 12126. [2023-12-19 02:01:18,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12126 states, 12125 states have (on average 1.3185154639175258) internal successors, (15987), 12125 states have internal predecessors, (15987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:01:18,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12126 states to 12126 states and 15987 transitions. [2023-12-19 02:01:18,326 INFO L78 Accepts]: Start accepts. Automaton has 12126 states and 15987 transitions. Word has length 175 [2023-12-19 02:01:18,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 02:01:18,327 INFO L495 AbstractCegarLoop]: Abstraction has 12126 states and 15987 transitions. [2023-12-19 02:01:18,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 2 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:01:18,327 INFO L276 IsEmpty]: Start isEmpty. Operand 12126 states and 15987 transitions. [2023-12-19 02:01:18,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2023-12-19 02:01:18,346 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 02:01:18,348 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 02:01:18,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-19 02:01:18,348 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 02:01:18,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 02:01:18,349 INFO L85 PathProgramCache]: Analyzing trace with hash -2060974238, now seen corresponding path program 1 times [2023-12-19 02:01:18,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 02:01:18,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119687090] [2023-12-19 02:01:18,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 02:01:18,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 02:01:18,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 02:01:18,626 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-19 02:01:18,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 02:01:18,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119687090] [2023-12-19 02:01:18,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119687090] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 02:01:18,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 02:01:18,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 02:01:18,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861165138] [2023-12-19 02:01:18,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 02:01:18,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 02:01:18,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 02:01:18,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 02:01:18,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 02:01:18,630 INFO L87 Difference]: Start difference. First operand 12126 states and 15987 transitions. Second operand has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:01:19,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 02:01:19,653 INFO L93 Difference]: Finished difference Result 31582 states and 42423 transitions. [2023-12-19 02:01:19,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 02:01:19,653 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 182 [2023-12-19 02:01:19,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 02:01:19,710 INFO L225 Difference]: With dead ends: 31582 [2023-12-19 02:01:19,711 INFO L226 Difference]: Without dead ends: 19863 [2023-12-19 02:01:19,732 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 [2023-12-19 02:01:19,733 INFO L413 NwaCegarLoop]: 338 mSDtfsCounter, 218 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 578 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-19 02:01:19,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 359 Invalid, 741 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 578 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-19 02:01:19,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19863 states. [2023-12-19 02:01:20,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19863 to 19853. [2023-12-19 02:01:20,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19853 states, 19852 states have (on average 1.2798206729800523) internal successors, (25407), 19852 states have internal predecessors, (25407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:01:20,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19853 states to 19853 states and 25407 transitions. [2023-12-19 02:01:20,168 INFO L78 Accepts]: Start accepts. Automaton has 19853 states and 25407 transitions. Word has length 182 [2023-12-19 02:01:20,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 02:01:20,169 INFO L495 AbstractCegarLoop]: Abstraction has 19853 states and 25407 transitions. [2023-12-19 02:01:20,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:01:20,169 INFO L276 IsEmpty]: Start isEmpty. Operand 19853 states and 25407 transitions. [2023-12-19 02:01:20,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2023-12-19 02:01:20,193 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 02:01:20,193 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 02:01:20,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-19 02:01:20,193 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 02:01:20,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 02:01:20,194 INFO L85 PathProgramCache]: Analyzing trace with hash 1354510896, now seen corresponding path program 1 times [2023-12-19 02:01:20,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 02:01:20,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855618331] [2023-12-19 02:01:20,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 02:01:20,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 02:01:20,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 02:01:20,521 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-19 02:01:20,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 02:01:20,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855618331] [2023-12-19 02:01:20,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855618331] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 02:01:20,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 02:01:20,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 02:01:20,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936649448] [2023-12-19 02:01:20,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 02:01:20,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 02:01:20,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 02:01:20,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 02:01:20,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 02:01:20,524 INFO L87 Difference]: Start difference. First operand 19853 states and 25407 transitions. Second operand has 4 states, 4 states have (on average 45.25) internal successors, (181), 3 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:01:21,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 02:01:21,532 INFO L93 Difference]: Finished difference Result 45522 states and 58725 transitions. [2023-12-19 02:01:21,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 02:01:21,533 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 45.25) internal successors, (181), 3 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 186 [2023-12-19 02:01:21,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 02:01:21,592 INFO L225 Difference]: With dead ends: 45522 [2023-12-19 02:01:21,592 INFO L226 Difference]: Without dead ends: 26076 [2023-12-19 02:01:21,620 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 02:01:21,622 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 626 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 788 mSolverCounterSat, 215 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 626 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 1003 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 215 IncrementalHoareTripleChecker+Valid, 788 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-19 02:01:21,624 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [626 Valid, 50 Invalid, 1003 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [215 Valid, 788 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-19 02:01:21,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26076 states. [2023-12-19 02:01:22,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26076 to 26067. [2023-12-19 02:01:22,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26067 states, 26066 states have (on average 1.234903705977135) internal successors, (32189), 26066 states have internal predecessors, (32189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:01:22,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26067 states to 26067 states and 32189 transitions. [2023-12-19 02:01:22,252 INFO L78 Accepts]: Start accepts. Automaton has 26067 states and 32189 transitions. Word has length 186 [2023-12-19 02:01:22,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 02:01:22,252 INFO L495 AbstractCegarLoop]: Abstraction has 26067 states and 32189 transitions. [2023-12-19 02:01:22,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.25) internal successors, (181), 3 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:01:22,253 INFO L276 IsEmpty]: Start isEmpty. Operand 26067 states and 32189 transitions. [2023-12-19 02:01:22,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2023-12-19 02:01:22,285 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 02:01:22,286 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 02:01:22,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-19 02:01:22,286 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 02:01:22,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 02:01:22,291 INFO L85 PathProgramCache]: Analyzing trace with hash -747284754, now seen corresponding path program 1 times [2023-12-19 02:01:22,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 02:01:22,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783212804] [2023-12-19 02:01:22,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 02:01:22,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 02:01:22,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 02:01:22,640 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 02:01:22,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 02:01:22,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783212804] [2023-12-19 02:01:22,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783212804] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 02:01:22,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 02:01:22,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 02:01:22,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283973477] [2023-12-19 02:01:22,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 02:01:22,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 02:01:22,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 02:01:22,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 02:01:22,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 02:01:22,645 INFO L87 Difference]: Start difference. First operand 26067 states and 32189 transitions. Second operand has 3 states, 3 states have (on average 63.0) internal successors, (189), 2 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:01:23,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 02:01:23,654 INFO L93 Difference]: Finished difference Result 67614 states and 83813 transitions. [2023-12-19 02:01:23,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 02:01:23,655 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 2 states have internal predecessors, (189), 0 states have call successors, (0), 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 189 [2023-12-19 02:01:23,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 02:01:23,751 INFO L225 Difference]: With dead ends: 67614 [2023-12-19 02:01:23,751 INFO L226 Difference]: Without dead ends: 41954 [2023-12-19 02:01:23,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 02:01:23,796 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 207 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 618 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 618 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-19 02:01:23,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 106 Invalid, 709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 618 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-19 02:01:23,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41954 states. [2023-12-19 02:01:24,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41954 to 41939. [2023-12-19 02:01:24,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41939 states, 41938 states have (on average 1.2147694215270162) internal successors, (50945), 41938 states have internal predecessors, (50945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:01:24,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41939 states to 41939 states and 50945 transitions. [2023-12-19 02:01:24,548 INFO L78 Accepts]: Start accepts. Automaton has 41939 states and 50945 transitions. Word has length 189 [2023-12-19 02:01:24,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 02:01:24,549 INFO L495 AbstractCegarLoop]: Abstraction has 41939 states and 50945 transitions. [2023-12-19 02:01:24,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 2 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:01:24,549 INFO L276 IsEmpty]: Start isEmpty. Operand 41939 states and 50945 transitions. [2023-12-19 02:01:24,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2023-12-19 02:01:24,750 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 02:01:24,751 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 02:01:24,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-19 02:01:24,751 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 02:01:24,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 02:01:24,752 INFO L85 PathProgramCache]: Analyzing trace with hash -310629943, now seen corresponding path program 1 times [2023-12-19 02:01:24,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 02:01:24,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459334365] [2023-12-19 02:01:24,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 02:01:24,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 02:01:24,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 02:01:25,155 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 02:01:25,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 02:01:25,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459334365] [2023-12-19 02:01:25,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459334365] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 02:01:25,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 02:01:25,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 02:01:25,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429903796] [2023-12-19 02:01:25,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 02:01:25,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 02:01:25,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 02:01:25,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 02:01:25,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 02:01:25,158 INFO L87 Difference]: Start difference. First operand 41939 states and 50945 transitions. Second operand has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 2 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:01:26,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 02:01:26,164 INFO L93 Difference]: Finished difference Result 98163 states and 120487 transitions. [2023-12-19 02:01:26,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 02:01:26,165 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 2 states have internal predecessors, (191), 0 states have call successors, (0), 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 191 [2023-12-19 02:01:26,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 02:01:26,280 INFO L225 Difference]: With dead ends: 98163 [2023-12-19 02:01:26,280 INFO L226 Difference]: Without dead ends: 57240 [2023-12-19 02:01:26,325 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 02:01:26,325 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 202 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 721 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 721 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 02:01:26,326 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 178 Invalid, 735 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 721 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 02:01:26,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57240 states. [2023-12-19 02:01:27,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57240 to 57212. [2023-12-19 02:01:27,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57212 states, 57211 states have (on average 1.2304451941060286) internal successors, (70395), 57211 states have internal predecessors, (70395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:01:27,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57212 states to 57212 states and 70395 transitions. [2023-12-19 02:01:27,673 INFO L78 Accepts]: Start accepts. Automaton has 57212 states and 70395 transitions. Word has length 191 [2023-12-19 02:01:27,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 02:01:27,674 INFO L495 AbstractCegarLoop]: Abstraction has 57212 states and 70395 transitions. [2023-12-19 02:01:27,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 2 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:01:27,674 INFO L276 IsEmpty]: Start isEmpty. Operand 57212 states and 70395 transitions. [2023-12-19 02:01:27,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2023-12-19 02:01:27,721 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 02:01:27,721 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 02:01:27,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-19 02:01:27,722 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 02:01:27,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 02:01:27,722 INFO L85 PathProgramCache]: Analyzing trace with hash 560096127, now seen corresponding path program 1 times [2023-12-19 02:01:27,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 02:01:27,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102394798] [2023-12-19 02:01:27,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 02:01:27,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 02:01:27,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 02:01:28,143 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 02:01:28,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 02:01:28,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102394798] [2023-12-19 02:01:28,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102394798] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 02:01:28,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 02:01:28,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 02:01:28,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763334175] [2023-12-19 02:01:28,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 02:01:28,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 02:01:28,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 02:01:28,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 02:01:28,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 02:01:28,146 INFO L87 Difference]: Start difference. First operand 57212 states and 70395 transitions. Second operand has 3 states, 3 states have (on average 65.0) internal successors, (195), 2 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:01:29,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 02:01:29,512 INFO L93 Difference]: Finished difference Result 137640 states and 169698 transitions. [2023-12-19 02:01:29,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 02:01:29,521 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 2 states have internal predecessors, (195), 0 states have call successors, (0), 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 195 [2023-12-19 02:01:29,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 02:01:29,652 INFO L225 Difference]: With dead ends: 137640 [2023-12-19 02:01:29,652 INFO L226 Difference]: Without dead ends: 81444 [2023-12-19 02:01:29,674 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 02:01:29,674 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 226 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 02:01:29,675 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 162 Invalid, 711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 702 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 02:01:29,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81444 states. [2023-12-19 02:01:30,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81444 to 81440. [2023-12-19 02:01:30,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81440 states, 81439 states have (on average 1.2316334925527082) internal successors, (100303), 81439 states have internal predecessors, (100303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:01:31,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81440 states to 81440 states and 100303 transitions. [2023-12-19 02:01:31,187 INFO L78 Accepts]: Start accepts. Automaton has 81440 states and 100303 transitions. Word has length 195 [2023-12-19 02:01:31,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 02:01:31,188 INFO L495 AbstractCegarLoop]: Abstraction has 81440 states and 100303 transitions. [2023-12-19 02:01:31,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 2 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:01:31,188 INFO L276 IsEmpty]: Start isEmpty. Operand 81440 states and 100303 transitions. [2023-12-19 02:01:31,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2023-12-19 02:01:31,219 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 02:01:31,219 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 02:01:31,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-19 02:01:31,219 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 02:01:31,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 02:01:31,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1407650071, now seen corresponding path program 1 times [2023-12-19 02:01:31,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 02:01:31,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352909501] [2023-12-19 02:01:31,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 02:01:31,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 02:01:31,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 02:01:31,454 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-19 02:01:31,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 02:01:31,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352909501] [2023-12-19 02:01:31,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352909501] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 02:01:31,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 02:01:31,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 02:01:31,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497260029] [2023-12-19 02:01:31,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 02:01:31,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 02:01:31,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 02:01:31,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 02:01:31,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 02:01:31,456 INFO L87 Difference]: Start difference. First operand 81440 states and 100303 transitions. Second operand has 4 states, 4 states have (on average 50.25) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:01:33,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 02:01:33,228 INFO L93 Difference]: Finished difference Result 206239 states and 254660 transitions. [2023-12-19 02:01:33,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 02:01:33,229 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 50.25) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 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 206 [2023-12-19 02:01:33,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 02:01:33,432 INFO L225 Difference]: With dead ends: 206239 [2023-12-19 02:01:33,433 INFO L226 Difference]: Without dead ends: 125815 [2023-12-19 02:01:33,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 02:01:33,485 INFO L413 NwaCegarLoop]: 232 mSDtfsCounter, 556 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 734 mSolverCounterSat, 212 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 556 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 212 IncrementalHoareTripleChecker+Valid, 734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-19 02:01:33,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [556 Valid, 473 Invalid, 946 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [212 Valid, 734 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-19 02:01:33,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125815 states. [2023-12-19 02:01:35,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125815 to 125595. [2023-12-19 02:01:35,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125595 states, 125594 states have (on average 1.2175900122617322) internal successors, (152922), 125594 states have internal predecessors, (152922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:01:35,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125595 states to 125595 states and 152922 transitions. [2023-12-19 02:01:35,575 INFO L78 Accepts]: Start accepts. Automaton has 125595 states and 152922 transitions. Word has length 206 [2023-12-19 02:01:35,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 02:01:35,575 INFO L495 AbstractCegarLoop]: Abstraction has 125595 states and 152922 transitions. [2023-12-19 02:01:35,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.25) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:01:35,575 INFO L276 IsEmpty]: Start isEmpty. Operand 125595 states and 152922 transitions. [2023-12-19 02:01:35,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2023-12-19 02:01:35,617 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 02:01:35,617 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 02:01:35,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-19 02:01:35,618 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 02:01:35,618 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 02:01:35,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1169610535, now seen corresponding path program 1 times [2023-12-19 02:01:35,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 02:01:35,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014408687] [2023-12-19 02:01:35,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 02:01:35,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 02:01:35,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 02:01:36,193 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-19 02:01:36,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 02:01:36,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014408687] [2023-12-19 02:01:36,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014408687] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 02:01:36,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 02:01:36,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 02:01:36,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203515522] [2023-12-19 02:01:36,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 02:01:36,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 02:01:36,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 02:01:36,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 02:01:36,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 02:01:36,196 INFO L87 Difference]: Start difference. First operand 125595 states and 152922 transitions. Second operand has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:01:37,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 02:01:37,525 INFO L93 Difference]: Finished difference Result 217961 states and 268206 transitions. [2023-12-19 02:01:37,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 02:01:37,525 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 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 227 [2023-12-19 02:01:37,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 02:01:37,660 INFO L225 Difference]: With dead ends: 217961 [2023-12-19 02:01:37,660 INFO L226 Difference]: Without dead ends: 94809 [2023-12-19 02:01:37,729 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 [2023-12-19 02:01:37,730 INFO L413 NwaCegarLoop]: 346 mSDtfsCounter, 171 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 496 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 367 SdHoareTripleChecker+Invalid, 660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 02:01:37,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 367 Invalid, 660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 496 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 02:01:37,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94809 states. [2023-12-19 02:01:39,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94809 to 88913. [2023-12-19 02:01:39,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88913 states, 88912 states have (on average 1.1646459420550657) internal successors, (103551), 88912 states have internal predecessors, (103551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:01:39,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88913 states to 88913 states and 103551 transitions. [2023-12-19 02:01:39,419 INFO L78 Accepts]: Start accepts. Automaton has 88913 states and 103551 transitions. Word has length 227 [2023-12-19 02:01:39,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 02:01:39,419 INFO L495 AbstractCegarLoop]: Abstraction has 88913 states and 103551 transitions. [2023-12-19 02:01:39,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:01:39,419 INFO L276 IsEmpty]: Start isEmpty. Operand 88913 states and 103551 transitions. [2023-12-19 02:01:39,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2023-12-19 02:01:39,447 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 02:01:39,447 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 02:01:39,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-19 02:01:39,447 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 02:01:39,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 02:01:39,448 INFO L85 PathProgramCache]: Analyzing trace with hash 301554004, now seen corresponding path program 1 times [2023-12-19 02:01:39,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 02:01:39,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926776172] [2023-12-19 02:01:39,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 02:01:39,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 02:01:39,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 02:01:40,267 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 02:01:40,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 02:01:40,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926776172] [2023-12-19 02:01:40,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926776172] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 02:01:40,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 02:01:40,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 02:01:40,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021085080] [2023-12-19 02:01:40,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 02:01:40,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 02:01:40,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 02:01:40,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 02:01:40,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 02:01:40,270 INFO L87 Difference]: Start difference. First operand 88913 states and 103551 transitions. Second operand has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 2 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:01:41,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 02:01:41,325 INFO L93 Difference]: Finished difference Result 168058 states and 195530 transitions. [2023-12-19 02:01:41,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 02:01:41,325 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 2 states have internal predecessors, (235), 0 states have call successors, (0), 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 235 [2023-12-19 02:01:41,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 02:01:41,438 INFO L225 Difference]: With dead ends: 168058 [2023-12-19 02:01:41,439 INFO L226 Difference]: Without dead ends: 88710 [2023-12-19 02:01:41,493 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 02:01:41,496 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 133 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 561 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 02:01:41,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 148 Invalid, 562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 561 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 02:01:41,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88710 states. [2023-12-19 02:01:42,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88710 to 88710. [2023-12-19 02:01:42,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88710 states, 88709 states have (on average 1.1647521671983676) internal successors, (103324), 88709 states have internal predecessors, (103324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:01:43,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88710 states to 88710 states and 103324 transitions. [2023-12-19 02:01:43,060 INFO L78 Accepts]: Start accepts. Automaton has 88710 states and 103324 transitions. Word has length 235 [2023-12-19 02:01:43,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 02:01:43,060 INFO L495 AbstractCegarLoop]: Abstraction has 88710 states and 103324 transitions. [2023-12-19 02:01:43,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 2 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:01:43,061 INFO L276 IsEmpty]: Start isEmpty. Operand 88710 states and 103324 transitions. [2023-12-19 02:01:43,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2023-12-19 02:01:43,332 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 02:01:43,332 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 02:01:43,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-19 02:01:43,333 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 02:01:43,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 02:01:43,333 INFO L85 PathProgramCache]: Analyzing trace with hash -88581847, now seen corresponding path program 1 times [2023-12-19 02:01:43,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 02:01:43,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100174489] [2023-12-19 02:01:43,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 02:01:43,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 02:01:43,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 02:01:43,710 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 02:01:43,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 02:01:43,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100174489] [2023-12-19 02:01:43,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100174489] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 02:01:43,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 02:01:43,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 02:01:43,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444941417] [2023-12-19 02:01:43,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 02:01:43,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 02:01:43,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 02:01:43,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 02:01:43,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 02:01:43,715 INFO L87 Difference]: Start difference. First operand 88710 states and 103324 transitions. Second operand has 4 states, 4 states have (on average 65.75) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:01:45,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 02:01:45,193 INFO L93 Difference]: Finished difference Result 170140 states and 198634 transitions. [2023-12-19 02:01:45,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 02:01:45,193 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 65.75) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 263 [2023-12-19 02:01:45,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 02:01:45,309 INFO L225 Difference]: With dead ends: 170140 [2023-12-19 02:01:45,309 INFO L226 Difference]: Without dead ends: 96484 [2023-12-19 02:01:45,362 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 02:01:45,362 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 358 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 1047 mSolverCounterSat, 266 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 1313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 266 IncrementalHoareTripleChecker+Valid, 1047 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-19 02:01:45,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [358 Valid, 111 Invalid, 1313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [266 Valid, 1047 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-19 02:01:45,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96484 states. [2023-12-19 02:01:46,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96484 to 93398. [2023-12-19 02:01:46,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93398 states, 93397 states have (on average 1.164202276304378) internal successors, (108733), 93397 states have internal predecessors, (108733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:01:47,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93398 states to 93398 states and 108733 transitions. [2023-12-19 02:01:47,284 INFO L78 Accepts]: Start accepts. Automaton has 93398 states and 108733 transitions. Word has length 263 [2023-12-19 02:01:47,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 02:01:47,284 INFO L495 AbstractCegarLoop]: Abstraction has 93398 states and 108733 transitions. [2023-12-19 02:01:47,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 65.75) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:01:47,284 INFO L276 IsEmpty]: Start isEmpty. Operand 93398 states and 108733 transitions. [2023-12-19 02:01:47,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2023-12-19 02:01:47,319 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 02:01:47,320 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 02:01:47,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-19 02:01:47,322 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 02:01:47,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 02:01:47,322 INFO L85 PathProgramCache]: Analyzing trace with hash 949296900, now seen corresponding path program 1 times [2023-12-19 02:01:47,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 02:01:47,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832763607] [2023-12-19 02:01:47,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 02:01:47,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 02:01:47,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 02:01:47,639 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 163 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2023-12-19 02:01:47,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 02:01:47,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832763607] [2023-12-19 02:01:47,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832763607] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 02:01:47,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 02:01:47,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 02:01:47,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125967200] [2023-12-19 02:01:47,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 02:01:47,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 02:01:47,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 02:01:47,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 02:01:47,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 02:01:47,641 INFO L87 Difference]: Start difference. First operand 93398 states and 108733 transitions. Second operand has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:01:48,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 02:01:48,792 INFO L93 Difference]: Finished difference Result 185791 states and 216122 transitions. [2023-12-19 02:01:48,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 02:01:48,793 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 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 283 [2023-12-19 02:01:48,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 02:01:48,910 INFO L225 Difference]: With dead ends: 185791 [2023-12-19 02:01:48,910 INFO L226 Difference]: Without dead ends: 85701 [2023-12-19 02:01:48,971 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 [2023-12-19 02:01:48,972 INFO L413 NwaCegarLoop]: 360 mSDtfsCounter, 163 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 539 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 02:01:48,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 372 Invalid, 647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 539 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 02:01:49,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85701 states. [2023-12-19 02:01:50,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85701 to 67381. [2023-12-19 02:01:50,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67381 states, 67380 states have (on average 1.1146482635796973) internal successors, (75105), 67380 states have internal predecessors, (75105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:01:50,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67381 states to 67381 states and 75105 transitions. [2023-12-19 02:01:50,257 INFO L78 Accepts]: Start accepts. Automaton has 67381 states and 75105 transitions. Word has length 283 [2023-12-19 02:01:50,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 02:01:50,257 INFO L495 AbstractCegarLoop]: Abstraction has 67381 states and 75105 transitions. [2023-12-19 02:01:50,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:01:50,257 INFO L276 IsEmpty]: Start isEmpty. Operand 67381 states and 75105 transitions. [2023-12-19 02:01:50,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2023-12-19 02:01:50,276 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 02:01:50,276 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 02:01:50,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-19 02:01:50,276 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 02:01:50,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 02:01:50,277 INFO L85 PathProgramCache]: Analyzing trace with hash 60376186, now seen corresponding path program 1 times [2023-12-19 02:01:50,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 02:01:50,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393400715] [2023-12-19 02:01:50,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 02:01:50,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 02:01:50,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 02:01:50,946 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 129 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 02:01:50,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 02:01:50,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393400715] [2023-12-19 02:01:50,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393400715] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 02:01:50,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 02:01:50,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 02:01:50,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713891928] [2023-12-19 02:01:50,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 02:01:50,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 02:01:50,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 02:01:50,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 02:01:50,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 02:01:50,948 INFO L87 Difference]: Start difference. First operand 67381 states and 75105 transitions. Second operand has 3 states, 3 states have (on average 97.0) internal successors, (291), 2 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:01:51,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 02:01:51,902 INFO L93 Difference]: Finished difference Result 129071 states and 143707 transitions. [2023-12-19 02:01:51,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 02:01:51,903 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 97.0) internal successors, (291), 2 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 291 [2023-12-19 02:01:51,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 02:01:52,001 INFO L225 Difference]: With dead ends: 129071 [2023-12-19 02:01:52,001 INFO L226 Difference]: Without dead ends: 69223 [2023-12-19 02:01:52,032 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 02:01:52,033 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 85 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 553 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 02:01:52,033 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 108 Invalid, 586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 553 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 02:01:52,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69223 states. [2023-12-19 02:01:52,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69223 to 69005. [2023-12-19 02:01:52,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69005 states, 69004 states have (on average 1.1108196626282534) internal successors, (76651), 69004 states have internal predecessors, (76651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:01:52,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69005 states to 69005 states and 76651 transitions. [2023-12-19 02:01:52,972 INFO L78 Accepts]: Start accepts. Automaton has 69005 states and 76651 transitions. Word has length 291 [2023-12-19 02:01:52,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 02:01:52,972 INFO L495 AbstractCegarLoop]: Abstraction has 69005 states and 76651 transitions. [2023-12-19 02:01:52,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.0) internal successors, (291), 2 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:01:52,972 INFO L276 IsEmpty]: Start isEmpty. Operand 69005 states and 76651 transitions. [2023-12-19 02:01:52,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2023-12-19 02:01:52,991 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 02:01:52,991 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 02:01:52,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-19 02:01:52,991 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 02:01:52,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 02:01:52,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1176233585, now seen corresponding path program 1 times [2023-12-19 02:01:52,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 02:01:52,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036764609] [2023-12-19 02:01:52,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 02:01:52,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 02:01:53,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 02:01:53,665 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 131 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 02:01:53,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 02:01:53,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036764609] [2023-12-19 02:01:53,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036764609] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 02:01:53,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1485039950] [2023-12-19 02:01:53,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 02:01:53,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 02:01:53,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 02:01:53,670 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) [2023-12-19 02:01:53,679 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-19 02:01:53,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 02:01:53,892 INFO L262 TraceCheckSpWp]: Trace formula consists of 483 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 02:01:53,910 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 02:01:54,242 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2023-12-19 02:01:54,242 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 02:01:54,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1485039950] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 02:01:54,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 02:01:54,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2023-12-19 02:01:54,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954329722] [2023-12-19 02:01:54,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 02:01:54,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 02:01:54,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 02:01:54,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 02:01:54,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 02:01:54,244 INFO L87 Difference]: Start difference. First operand 69005 states and 76651 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 2 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:01:55,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 02:01:55,263 INFO L93 Difference]: Finished difference Result 156756 states and 175248 transitions. [2023-12-19 02:01:55,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 02:01:55,263 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 2 states have internal predecessors, (164), 0 states have call successors, (0), 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 293 [2023-12-19 02:01:55,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 02:01:55,389 INFO L225 Difference]: With dead ends: 156756 [2023-12-19 02:01:55,389 INFO L226 Difference]: Without dead ends: 88769 [2023-12-19 02:01:55,438 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 292 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 02:01:55,439 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 93 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 02:01:55,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 86 Invalid, 585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 520 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 02:01:55,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88769 states. [2023-12-19 02:01:56,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88769 to 86323. [2023-12-19 02:01:56,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86323 states, 86322 states have (on average 1.112543731609555) internal successors, (96037), 86322 states have internal predecessors, (96037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:01:56,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86323 states to 86323 states and 96037 transitions. [2023-12-19 02:01:56,851 INFO L78 Accepts]: Start accepts. Automaton has 86323 states and 96037 transitions. Word has length 293 [2023-12-19 02:01:56,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 02:01:56,851 INFO L495 AbstractCegarLoop]: Abstraction has 86323 states and 96037 transitions. [2023-12-19 02:01:56,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 2 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:01:56,852 INFO L276 IsEmpty]: Start isEmpty. Operand 86323 states and 96037 transitions. [2023-12-19 02:01:56,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2023-12-19 02:01:56,868 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 02:01:56,869 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 02:01:56,876 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-19 02:01:57,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 02:01:57,070 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 02:01:57,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 02:01:57,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1309134433, now seen corresponding path program 1 times [2023-12-19 02:01:57,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 02:01:57,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489162355] [2023-12-19 02:01:57,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 02:01:57,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 02:01:57,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 02:01:57,534 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 208 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2023-12-19 02:01:57,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 02:01:57,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489162355] [2023-12-19 02:01:57,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489162355] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 02:01:57,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 02:01:57,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 02:01:57,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127260180] [2023-12-19 02:01:57,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 02:01:57,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 02:01:57,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 02:01:57,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 02:01:57,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 02:01:57,536 INFO L87 Difference]: Start difference. First operand 86323 states and 96037 transitions. Second operand has 4 states, 4 states have (on average 62.0) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:01:58,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 02:01:58,730 INFO L93 Difference]: Finished difference Result 166606 states and 185363 transitions. [2023-12-19 02:01:58,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 02:01:58,730 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 62.0) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 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 299 [2023-12-19 02:01:58,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 02:01:58,856 INFO L225 Difference]: With dead ends: 166606 [2023-12-19 02:01:58,857 INFO L226 Difference]: Without dead ends: 87002 [2023-12-19 02:01:59,162 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 02:01:59,166 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 366 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 1001 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 366 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 1130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 1001 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-19 02:01:59,166 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [366 Valid, 96 Invalid, 1130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 1001 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-19 02:01:59,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87002 states. [2023-12-19 02:02:00,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87002 to 85308. [2023-12-19 02:02:00,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85308 states, 85307 states have (on average 1.1124526709414233) internal successors, (94900), 85307 states have internal predecessors, (94900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:02:00,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85308 states to 85308 states and 94900 transitions. [2023-12-19 02:02:00,200 INFO L78 Accepts]: Start accepts. Automaton has 85308 states and 94900 transitions. Word has length 299 [2023-12-19 02:02:00,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 02:02:00,200 INFO L495 AbstractCegarLoop]: Abstraction has 85308 states and 94900 transitions. [2023-12-19 02:02:00,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 62.0) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:02:00,200 INFO L276 IsEmpty]: Start isEmpty. Operand 85308 states and 94900 transitions. [2023-12-19 02:02:00,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2023-12-19 02:02:00,218 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 02:02:00,218 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 02:02:00,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-19 02:02:00,219 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 02:02:00,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 02:02:00,219 INFO L85 PathProgramCache]: Analyzing trace with hash -1609708082, now seen corresponding path program 1 times [2023-12-19 02:02:00,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 02:02:00,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553018337] [2023-12-19 02:02:00,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 02:02:00,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 02:02:00,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 02:02:00,845 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 129 proven. 6 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2023-12-19 02:02:00,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 02:02:00,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553018337] [2023-12-19 02:02:00,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553018337] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 02:02:00,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1997944962] [2023-12-19 02:02:00,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 02:02:00,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 02:02:00,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 02:02:00,849 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) [2023-12-19 02:02:00,850 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-19 02:02:01,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 02:02:01,046 INFO L262 TraceCheckSpWp]: Trace formula consists of 627 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 02:02:01,054 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 02:02:01,301 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 301 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-19 02:02:01,302 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 02:02:01,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1997944962] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 02:02:01,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 02:02:01,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [3] total 7 [2023-12-19 02:02:01,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789107095] [2023-12-19 02:02:01,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 02:02:01,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 02:02:01,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 02:02:01,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 02:02:01,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-19 02:02:01,304 INFO L87 Difference]: Start difference. First operand 85308 states and 94900 transitions. Second operand has 5 states, 5 states have (on average 60.2) internal successors, (301), 5 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:02:02,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 02:02:02,861 INFO L93 Difference]: Finished difference Result 236703 states and 261750 transitions. [2023-12-19 02:02:02,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 02:02:02,861 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 60.2) internal successors, (301), 5 states have internal predecessors, (301), 0 states have call successors, (0), 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 306 [2023-12-19 02:02:02,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 02:02:03,321 INFO L225 Difference]: With dead ends: 236703 [2023-12-19 02:02:03,322 INFO L226 Difference]: Without dead ends: 152413 [2023-12-19 02:02:03,386 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 303 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-19 02:02:03,387 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 1192 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 668 mSolverCounterSat, 205 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1192 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 205 IncrementalHoareTripleChecker+Valid, 668 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-19 02:02:03,387 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1192 Valid, 423 Invalid, 873 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [205 Valid, 668 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-19 02:02:03,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152413 states. [2023-12-19 02:02:05,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152413 to 135921. [2023-12-19 02:02:05,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135921 states, 135920 states have (on average 1.1062389640965273) internal successors, (150360), 135920 states have internal predecessors, (150360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:02:05,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135921 states to 135921 states and 150360 transitions. [2023-12-19 02:02:05,691 INFO L78 Accepts]: Start accepts. Automaton has 135921 states and 150360 transitions. Word has length 306 [2023-12-19 02:02:05,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 02:02:05,692 INFO L495 AbstractCegarLoop]: Abstraction has 135921 states and 150360 transitions. [2023-12-19 02:02:05,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 60.2) internal successors, (301), 5 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:02:05,692 INFO L276 IsEmpty]: Start isEmpty. Operand 135921 states and 150360 transitions. [2023-12-19 02:02:05,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2023-12-19 02:02:05,712 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 02:02:05,713 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 02:02:05,723 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-19 02:02:05,922 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,SelfDestructingSolverStorable20 [2023-12-19 02:02:05,923 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 02:02:05,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 02:02:05,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1871530072, now seen corresponding path program 1 times [2023-12-19 02:02:05,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 02:02:05,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191814429] [2023-12-19 02:02:05,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 02:02:05,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 02:02:05,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 02:02:06,265 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 147 proven. 6 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2023-12-19 02:02:06,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 02:02:06,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191814429] [2023-12-19 02:02:06,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191814429] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 02:02:06,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [57507402] [2023-12-19 02:02:06,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 02:02:06,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 02:02:06,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 02:02:06,269 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) [2023-12-19 02:02:06,293 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-19 02:02:06,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 02:02:06,728 INFO L262 TraceCheckSpWp]: Trace formula consists of 633 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 02:02:06,737 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 02:02:06,901 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 162 proven. 0 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2023-12-19 02:02:06,901 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 02:02:06,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [57507402] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 02:02:06,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 02:02:06,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-12-19 02:02:06,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328967094] [2023-12-19 02:02:06,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 02:02:06,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 02:02:06,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 02:02:06,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 02:02:06,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 02:02:06,903 INFO L87 Difference]: Start difference. First operand 135921 states and 150360 transitions. Second operand has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:02:08,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 02:02:08,152 INFO L93 Difference]: Finished difference Result 266595 states and 295202 transitions. [2023-12-19 02:02:08,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 02:02:08,152 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 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 324 [2023-12-19 02:02:08,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 02:02:08,354 INFO L225 Difference]: With dead ends: 266595 [2023-12-19 02:02:08,354 INFO L226 Difference]: Without dead ends: 134335 [2023-12-19 02:02:08,429 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 323 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 02:02:08,430 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 68 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 525 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 02:02:08,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 114 Invalid, 568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 525 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 02:02:08,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134335 states. [2023-12-19 02:02:10,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134335 to 130430. [2023-12-19 02:02:10,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130430 states, 130429 states have (on average 1.1031902414340369) internal successors, (143888), 130429 states have internal predecessors, (143888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:02:10,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130430 states to 130430 states and 143888 transitions. [2023-12-19 02:02:10,865 INFO L78 Accepts]: Start accepts. Automaton has 130430 states and 143888 transitions. Word has length 324 [2023-12-19 02:02:10,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 02:02:10,865 INFO L495 AbstractCegarLoop]: Abstraction has 130430 states and 143888 transitions. [2023-12-19 02:02:10,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:02:10,866 INFO L276 IsEmpty]: Start isEmpty. Operand 130430 states and 143888 transitions. [2023-12-19 02:02:10,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2023-12-19 02:02:10,888 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 02:02:10,889 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 02:02:10,899 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-19 02:02:11,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 02:02:11,096 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 02:02:11,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 02:02:11,097 INFO L85 PathProgramCache]: Analyzing trace with hash -1762580846, now seen corresponding path program 1 times [2023-12-19 02:02:11,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 02:02:11,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518097666] [2023-12-19 02:02:11,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 02:02:11,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 02:02:11,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 02:02:11,589 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 74 proven. 6 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2023-12-19 02:02:11,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 02:02:11,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518097666] [2023-12-19 02:02:11,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518097666] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 02:02:11,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [751112051] [2023-12-19 02:02:11,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 02:02:11,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 02:02:11,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 02:02:11,601 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) [2023-12-19 02:02:11,629 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-19 02:02:12,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 02:02:12,027 INFO L262 TraceCheckSpWp]: Trace formula consists of 577 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 02:02:12,034 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 02:02:12,311 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 171 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-12-19 02:02:12,312 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 02:02:12,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [751112051] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 02:02:12,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 02:02:12,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-12-19 02:02:12,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750880909] [2023-12-19 02:02:12,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 02:02:12,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 02:02:12,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 02:02:12,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 02:02:12,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 02:02:12,314 INFO L87 Difference]: Start difference. First operand 130430 states and 143888 transitions. Second operand has 3 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:02:13,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 02:02:13,825 INFO L93 Difference]: Finished difference Result 257667 states and 284304 transitions. [2023-12-19 02:02:13,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 02:02:13,826 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 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 335 [2023-12-19 02:02:13,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 02:02:14,032 INFO L225 Difference]: With dead ends: 257667 [2023-12-19 02:02:14,033 INFO L226 Difference]: Without dead ends: 127441 [2023-12-19 02:02:14,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 334 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 02:02:14,109 INFO L413 NwaCegarLoop]: 289 mSDtfsCounter, 61 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 539 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 02:02:14,111 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 303 Invalid, 589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 539 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 02:02:14,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127441 states. [2023-12-19 02:02:15,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127441 to 124541. [2023-12-19 02:02:15,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124541 states, 124540 states have (on average 1.0992131042235427) internal successors, (136896), 124540 states have internal predecessors, (136896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:02:16,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124541 states to 124541 states and 136896 transitions. [2023-12-19 02:02:16,238 INFO L78 Accepts]: Start accepts. Automaton has 124541 states and 136896 transitions. Word has length 335 [2023-12-19 02:02:16,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 02:02:16,239 INFO L495 AbstractCegarLoop]: Abstraction has 124541 states and 136896 transitions. [2023-12-19 02:02:16,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:02:16,239 INFO L276 IsEmpty]: Start isEmpty. Operand 124541 states and 136896 transitions. [2023-12-19 02:02:16,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2023-12-19 02:02:16,271 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 02:02:16,271 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 02:02:16,278 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-19 02:02:16,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 02:02:16,472 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 02:02:16,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 02:02:16,473 INFO L85 PathProgramCache]: Analyzing trace with hash 1996073446, now seen corresponding path program 1 times [2023-12-19 02:02:16,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 02:02:16,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184601259] [2023-12-19 02:02:16,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 02:02:16,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 02:02:16,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 02:02:17,315 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 415 proven. 101 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2023-12-19 02:02:17,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 02:02:17,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184601259] [2023-12-19 02:02:17,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184601259] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 02:02:17,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [856024543] [2023-12-19 02:02:17,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 02:02:17,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 02:02:17,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 02:02:17,318 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) [2023-12-19 02:02:17,337 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-19 02:02:17,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 02:02:17,551 INFO L262 TraceCheckSpWp]: Trace formula consists of 748 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 02:02:17,630 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 02:02:17,671 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 413 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2023-12-19 02:02:17,671 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 02:02:17,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [856024543] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 02:02:17,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 02:02:17,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-12-19 02:02:17,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333509993] [2023-12-19 02:02:17,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 02:02:17,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 02:02:17,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 02:02:17,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 02:02:17,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 02:02:17,676 INFO L87 Difference]: Start difference. First operand 124541 states and 136896 transitions. Second operand has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:02:19,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 02:02:19,099 INFO L93 Difference]: Finished difference Result 294601 states and 323512 transitions. [2023-12-19 02:02:19,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 02:02:19,100 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 0 states have call successors, (0), 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 486 [2023-12-19 02:02:19,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 02:02:19,354 INFO L225 Difference]: With dead ends: 294601 [2023-12-19 02:02:19,354 INFO L226 Difference]: Without dead ends: 170670 [2023-12-19 02:02:19,390 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 488 GetRequests, 485 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 02:02:19,391 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 216 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 02:02:19,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 121 Invalid, 596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 566 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 02:02:19,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170670 states. [2023-12-19 02:02:21,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170670 to 137110. [2023-12-19 02:02:21,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137110 states, 137109 states have (on average 1.0838311124725584) internal successors, (148603), 137109 states have internal predecessors, (148603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:02:21,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137110 states to 137110 states and 148603 transitions. [2023-12-19 02:02:21,750 INFO L78 Accepts]: Start accepts. Automaton has 137110 states and 148603 transitions. Word has length 486 [2023-12-19 02:02:21,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 02:02:21,751 INFO L495 AbstractCegarLoop]: Abstraction has 137110 states and 148603 transitions. [2023-12-19 02:02:21,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:02:21,751 INFO L276 IsEmpty]: Start isEmpty. Operand 137110 states and 148603 transitions. [2023-12-19 02:02:21,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 507 [2023-12-19 02:02:21,792 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 02:02:21,792 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 02:02:21,799 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-19 02:02:21,993 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,SelfDestructingSolverStorable23 [2023-12-19 02:02:21,994 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 02:02:21,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 02:02:21,994 INFO L85 PathProgramCache]: Analyzing trace with hash 1496738109, now seen corresponding path program 1 times [2023-12-19 02:02:21,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 02:02:21,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103623323] [2023-12-19 02:02:21,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 02:02:21,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 02:02:22,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 02:02:22,996 INFO L134 CoverageAnalysis]: Checked inductivity of 757 backedges. 549 proven. 12 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2023-12-19 02:02:22,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 02:02:22,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103623323] [2023-12-19 02:02:22,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103623323] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 02:02:22,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1191529923] [2023-12-19 02:02:22,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 02:02:22,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 02:02:22,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 02:02:23,001 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) [2023-12-19 02:02:23,006 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-19 02:02:23,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 02:02:23,245 INFO L262 TraceCheckSpWp]: Trace formula consists of 869 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 02:02:23,249 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 02:02:23,366 INFO L134 CoverageAnalysis]: Checked inductivity of 757 backedges. 625 proven. 0 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2023-12-19 02:02:23,367 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 02:02:23,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1191529923] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 02:02:23,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 02:02:23,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2023-12-19 02:02:23,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110265704] [2023-12-19 02:02:23,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 02:02:23,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 02:02:23,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 02:02:23,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 02:02:23,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-19 02:02:23,369 INFO L87 Difference]: Start difference. First operand 137110 states and 148603 transitions. Second operand has 3 states, 3 states have (on average 128.0) internal successors, (384), 3 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:02:24,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 02:02:24,392 INFO L93 Difference]: Finished difference Result 327532 states and 355056 transitions. [2023-12-19 02:02:24,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 02:02:24,393 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 128.0) internal successors, (384), 3 states have internal predecessors, (384), 0 states have call successors, (0), 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 506 [2023-12-19 02:02:24,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 02:02:24,652 INFO L225 Difference]: With dead ends: 327532 [2023-12-19 02:02:24,652 INFO L226 Difference]: Without dead ends: 194081 [2023-12-19 02:02:24,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 509 GetRequests, 505 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-19 02:02:24,745 INFO L413 NwaCegarLoop]: 511 mSDtfsCounter, 198 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 717 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 02:02:24,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 717 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 02:02:24,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194081 states. [2023-12-19 02:02:27,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194081 to 191230. [2023-12-19 02:02:27,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191230 states, 191229 states have (on average 1.0798885106338474) internal successors, (206506), 191229 states have internal predecessors, (206506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:02:28,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191230 states to 191230 states and 206506 transitions. [2023-12-19 02:02:28,132 INFO L78 Accepts]: Start accepts. Automaton has 191230 states and 206506 transitions. Word has length 506 [2023-12-19 02:02:28,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 02:02:28,132 INFO L495 AbstractCegarLoop]: Abstraction has 191230 states and 206506 transitions. [2023-12-19 02:02:28,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 128.0) internal successors, (384), 3 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:02:28,132 INFO L276 IsEmpty]: Start isEmpty. Operand 191230 states and 206506 transitions. [2023-12-19 02:02:28,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 518 [2023-12-19 02:02:28,176 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 02:02:28,176 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 02:02:28,183 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-19 02:02:28,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 02:02:28,377 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 02:02:28,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 02:02:28,377 INFO L85 PathProgramCache]: Analyzing trace with hash -2024019232, now seen corresponding path program 1 times [2023-12-19 02:02:28,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 02:02:28,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786928944] [2023-12-19 02:02:28,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 02:02:28,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 02:02:28,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 02:02:29,135 INFO L134 CoverageAnalysis]: Checked inductivity of 679 backedges. 513 proven. 12 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2023-12-19 02:02:29,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 02:02:29,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786928944] [2023-12-19 02:02:29,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786928944] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 02:02:29,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1169242367] [2023-12-19 02:02:29,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 02:02:29,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 02:02:29,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 02:02:29,137 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) [2023-12-19 02:02:29,156 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-19 02:02:29,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 02:02:29,422 INFO L262 TraceCheckSpWp]: Trace formula consists of 832 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 02:02:29,428 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 02:02:29,579 INFO L134 CoverageAnalysis]: Checked inductivity of 679 backedges. 519 proven. 0 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2023-12-19 02:02:29,579 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 02:02:29,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1169242367] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 02:02:29,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 02:02:29,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2023-12-19 02:02:29,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997628201] [2023-12-19 02:02:29,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 02:02:29,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 02:02:29,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 02:02:29,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 02:02:29,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-19 02:02:29,582 INFO L87 Difference]: Start difference. First operand 191230 states and 206506 transitions. Second operand has 3 states, 3 states have (on average 124.0) internal successors, (372), 3 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:02:31,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 02:02:31,230 INFO L93 Difference]: Finished difference Result 382519 states and 413198 transitions. [2023-12-19 02:02:31,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 02:02:31,230 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 124.0) internal successors, (372), 3 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 517 [2023-12-19 02:02:31,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 02:02:31,521 INFO L225 Difference]: With dead ends: 382519 [2023-12-19 02:02:31,521 INFO L226 Difference]: Without dead ends: 192508 [2023-12-19 02:02:31,626 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 520 GetRequests, 516 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-19 02:02:31,627 INFO L413 NwaCegarLoop]: 309 mSDtfsCounter, 147 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 524 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 02:02:31,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 324 Invalid, 569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 524 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 02:02:31,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192508 states. [2023-12-19 02:02:34,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192508 to 175189. [2023-12-19 02:02:34,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175189 states, 175188 states have (on average 1.0760953946617349) internal successors, (188519), 175188 states have internal predecessors, (188519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:02:34,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175189 states to 175189 states and 188519 transitions. [2023-12-19 02:02:34,554 INFO L78 Accepts]: Start accepts. Automaton has 175189 states and 188519 transitions. Word has length 517 [2023-12-19 02:02:34,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 02:02:34,554 INFO L495 AbstractCegarLoop]: Abstraction has 175189 states and 188519 transitions. [2023-12-19 02:02:34,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 124.0) internal successors, (372), 3 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:02:34,555 INFO L276 IsEmpty]: Start isEmpty. Operand 175189 states and 188519 transitions. [2023-12-19 02:02:34,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 524 [2023-12-19 02:02:34,608 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 02:02:34,608 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 02:02:34,619 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-19 02:02:34,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 02:02:34,816 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 02:02:34,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 02:02:34,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1443632900, now seen corresponding path program 1 times [2023-12-19 02:02:34,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 02:02:34,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591228988] [2023-12-19 02:02:34,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 02:02:34,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 02:02:34,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 02:02:35,326 INFO L134 CoverageAnalysis]: Checked inductivity of 714 backedges. 408 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2023-12-19 02:02:35,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 02:02:35,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591228988] [2023-12-19 02:02:35,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591228988] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 02:02:35,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 02:02:35,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 02:02:35,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560677431] [2023-12-19 02:02:35,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 02:02:35,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 02:02:35,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 02:02:35,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 02:02:35,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 02:02:35,328 INFO L87 Difference]: Start difference. First operand 175189 states and 188519 transitions. Second operand has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:02:36,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 02:02:36,626 INFO L93 Difference]: Finished difference Result 278547 states and 299228 transitions. [2023-12-19 02:02:36,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 02:02:36,627 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 0 states have call successors, (0), 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 523 [2023-12-19 02:02:36,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 02:02:36,773 INFO L225 Difference]: With dead ends: 278547 [2023-12-19 02:02:36,774 INFO L226 Difference]: Without dead ends: 104169 [2023-12-19 02:02:36,848 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 [2023-12-19 02:02:36,849 INFO L413 NwaCegarLoop]: 282 mSDtfsCounter, 230 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 481 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 02:02:36,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [230 Valid, 295 Invalid, 559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 481 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 02:02:36,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104169 states. [2023-12-19 02:02:38,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104169 to 100097. [2023-12-19 02:02:38,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100097 states, 100096 states have (on average 1.0569353420716112) internal successors, (105795), 100096 states have internal predecessors, (105795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:02:38,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100097 states to 100097 states and 105795 transitions. [2023-12-19 02:02:38,501 INFO L78 Accepts]: Start accepts. Automaton has 100097 states and 105795 transitions. Word has length 523 [2023-12-19 02:02:38,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 02:02:38,501 INFO L495 AbstractCegarLoop]: Abstraction has 100097 states and 105795 transitions. [2023-12-19 02:02:38,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:02:38,501 INFO L276 IsEmpty]: Start isEmpty. Operand 100097 states and 105795 transitions. [2023-12-19 02:02:38,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 551 [2023-12-19 02:02:38,532 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 02:02:38,532 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 02:02:38,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-19 02:02:38,533 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 02:02:38,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 02:02:38,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1635746066, now seen corresponding path program 1 times [2023-12-19 02:02:38,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 02:02:38,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940308749] [2023-12-19 02:02:38,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 02:02:38,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 02:02:38,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 02:02:39,484 INFO L134 CoverageAnalysis]: Checked inductivity of 856 backedges. 177 proven. 6 refuted. 0 times theorem prover too weak. 673 trivial. 0 not checked. [2023-12-19 02:02:39,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 02:02:39,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940308749] [2023-12-19 02:02:39,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940308749] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 02:02:39,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [842540666] [2023-12-19 02:02:39,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 02:02:39,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 02:02:39,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 02:02:39,486 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) [2023-12-19 02:02:39,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-19 02:02:39,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 02:02:39,732 INFO L262 TraceCheckSpWp]: Trace formula consists of 950 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 02:02:39,737 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 02:02:39,890 INFO L134 CoverageAnalysis]: Checked inductivity of 856 backedges. 642 proven. 0 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2023-12-19 02:02:39,890 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 02:02:39,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [842540666] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 02:02:39,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 02:02:39,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-12-19 02:02:39,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127647409] [2023-12-19 02:02:39,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 02:02:39,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 02:02:39,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 02:02:39,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 02:02:39,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 02:02:39,892 INFO L87 Difference]: Start difference. First operand 100097 states and 105795 transitions. Second operand has 3 states, 3 states have (on average 123.33333333333333) internal successors, (370), 3 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:02:40,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 02:02:40,923 INFO L93 Difference]: Finished difference Result 204086 states and 216051 transitions. [2023-12-19 02:02:40,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 02:02:40,923 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 123.33333333333333) internal successors, (370), 3 states have internal predecessors, (370), 0 states have call successors, (0), 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 550 [2023-12-19 02:02:40,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 02:02:41,085 INFO L225 Difference]: With dead ends: 204086 [2023-12-19 02:02:41,085 INFO L226 Difference]: Without dead ends: 105411 [2023-12-19 02:02:41,137 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 552 GetRequests, 549 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 02:02:41,137 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 151 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 525 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 02:02:41,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 91 Invalid, 569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 525 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 02:02:41,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105411 states. [2023-12-19 02:02:42,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105411 to 98494. [2023-12-19 02:02:42,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98494 states, 98493 states have (on average 1.0568974444884407) internal successors, (104097), 98493 states have internal predecessors, (104097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:02:42,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98494 states to 98494 states and 104097 transitions. [2023-12-19 02:02:42,648 INFO L78 Accepts]: Start accepts. Automaton has 98494 states and 104097 transitions. Word has length 550 [2023-12-19 02:02:42,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 02:02:42,648 INFO L495 AbstractCegarLoop]: Abstraction has 98494 states and 104097 transitions. [2023-12-19 02:02:42,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 123.33333333333333) internal successors, (370), 3 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:02:42,648 INFO L276 IsEmpty]: Start isEmpty. Operand 98494 states and 104097 transitions. [2023-12-19 02:02:42,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 554 [2023-12-19 02:02:42,673 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 02:02:42,674 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 02:02:42,680 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-19 02:02:42,874 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,SelfDestructingSolverStorable27 [2023-12-19 02:02:42,874 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 02:02:42,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 02:02:42,875 INFO L85 PathProgramCache]: Analyzing trace with hash 2118823339, now seen corresponding path program 1 times [2023-12-19 02:02:42,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 02:02:42,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416298404] [2023-12-19 02:02:42,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 02:02:42,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 02:02:42,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 02:02:43,369 INFO L134 CoverageAnalysis]: Checked inductivity of 905 backedges. 673 proven. 0 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2023-12-19 02:02:43,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 02:02:43,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416298404] [2023-12-19 02:02:43,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416298404] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 02:02:43,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 02:02:43,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 02:02:43,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377814331] [2023-12-19 02:02:43,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 02:02:43,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 02:02:43,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 02:02:43,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 02:02:43,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 02:02:43,371 INFO L87 Difference]: Start difference. First operand 98494 states and 104097 transitions. Second operand has 3 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:02:44,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 02:02:44,428 INFO L93 Difference]: Finished difference Result 171751 states and 181533 transitions. [2023-12-19 02:02:44,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 02:02:44,428 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 553 [2023-12-19 02:02:44,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 02:02:44,535 INFO L225 Difference]: With dead ends: 171751 [2023-12-19 02:02:44,536 INFO L226 Difference]: Without dead ends: 74679 [2023-12-19 02:02:44,616 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 [2023-12-19 02:02:44,617 INFO L413 NwaCegarLoop]: 277 mSDtfsCounter, 161 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 02:02:44,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 292 Invalid, 556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 491 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 02:02:44,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74679 states. [2023-12-19 02:02:45,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74679 to 67555. [2023-12-19 02:02:45,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67555 states, 67554 states have (on average 1.0469846345146105) internal successors, (70728), 67554 states have internal predecessors, (70728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:02:45,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67555 states to 67555 states and 70728 transitions. [2023-12-19 02:02:45,683 INFO L78 Accepts]: Start accepts. Automaton has 67555 states and 70728 transitions. Word has length 553 [2023-12-19 02:02:45,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 02:02:45,683 INFO L495 AbstractCegarLoop]: Abstraction has 67555 states and 70728 transitions. [2023-12-19 02:02:45,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:02:45,683 INFO L276 IsEmpty]: Start isEmpty. Operand 67555 states and 70728 transitions. [2023-12-19 02:02:45,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 645 [2023-12-19 02:02:45,713 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 02:02:45,714 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 02:02:45,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-12-19 02:02:45,714 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 02:02:45,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 02:02:45,714 INFO L85 PathProgramCache]: Analyzing trace with hash -184219717, now seen corresponding path program 1 times [2023-12-19 02:02:45,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 02:02:45,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749260611] [2023-12-19 02:02:45,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 02:02:45,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 02:02:45,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 02:02:46,642 INFO L134 CoverageAnalysis]: Checked inductivity of 1347 backedges. 240 proven. 6 refuted. 0 times theorem prover too weak. 1101 trivial. 0 not checked. [2023-12-19 02:02:46,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 02:02:46,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749260611] [2023-12-19 02:02:46,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749260611] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 02:02:46,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [779584217] [2023-12-19 02:02:46,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 02:02:46,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 02:02:46,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 02:02:46,644 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) [2023-12-19 02:02:46,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-19 02:02:46,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 02:02:46,943 INFO L262 TraceCheckSpWp]: Trace formula consists of 1078 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 02:02:46,948 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 02:02:46,997 INFO L134 CoverageAnalysis]: Checked inductivity of 1347 backedges. 794 proven. 0 refuted. 0 times theorem prover too weak. 553 trivial. 0 not checked. [2023-12-19 02:02:46,997 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 02:02:46,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [779584217] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 02:02:46,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 02:02:46,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-12-19 02:02:46,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877521475] [2023-12-19 02:02:46,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 02:02:46,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 02:02:46,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 02:02:46,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 02:02:46,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 02:02:46,999 INFO L87 Difference]: Start difference. First operand 67555 states and 70728 transitions. Second operand has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:02:47,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 02:02:47,596 INFO L93 Difference]: Finished difference Result 149180 states and 156257 transitions. [2023-12-19 02:02:47,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 02:02:47,597 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 0 states have call successors, (0), 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 644 [2023-12-19 02:02:47,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 02:02:47,692 INFO L225 Difference]: With dead ends: 149180 [2023-12-19 02:02:47,692 INFO L226 Difference]: Without dead ends: 81011 [2023-12-19 02:02:47,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 646 GetRequests, 643 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 02:02:47,708 INFO L413 NwaCegarLoop]: 483 mSDtfsCounter, 211 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 688 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 02:02:47,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 688 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 02:02:47,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81011 states. [2023-12-19 02:02:48,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81011 to 78564. [2023-12-19 02:02:48,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78564 states, 78563 states have (on average 1.0455812532617135) internal successors, (82144), 78563 states have internal predecessors, (82144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:02:48,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78564 states to 78564 states and 82144 transitions. [2023-12-19 02:02:48,632 INFO L78 Accepts]: Start accepts. Automaton has 78564 states and 82144 transitions. Word has length 644 [2023-12-19 02:02:48,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 02:02:48,632 INFO L495 AbstractCegarLoop]: Abstraction has 78564 states and 82144 transitions. [2023-12-19 02:02:48,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:02:48,632 INFO L276 IsEmpty]: Start isEmpty. Operand 78564 states and 82144 transitions. [2023-12-19 02:02:48,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 652 [2023-12-19 02:02:48,909 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 02:02:48,910 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 02:02:48,940 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-19 02:02:49,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 02:02:49,111 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 02:02:49,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 02:02:49,111 INFO L85 PathProgramCache]: Analyzing trace with hash -389237778, now seen corresponding path program 1 times [2023-12-19 02:02:49,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 02:02:49,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162714721] [2023-12-19 02:02:49,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 02:02:49,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 02:02:49,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 02:02:49,760 INFO L134 CoverageAnalysis]: Checked inductivity of 1564 backedges. 744 proven. 0 refuted. 0 times theorem prover too weak. 820 trivial. 0 not checked. [2023-12-19 02:02:49,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 02:02:49,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162714721] [2023-12-19 02:02:49,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162714721] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 02:02:49,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 02:02:49,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 02:02:49,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600030207] [2023-12-19 02:02:49,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 02:02:49,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 02:02:49,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 02:02:49,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 02:02:49,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 02:02:49,763 INFO L87 Difference]: Start difference. First operand 78564 states and 82144 transitions. Second operand has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:02:50,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 02:02:50,553 INFO L93 Difference]: Finished difference Result 156329 states and 163441 transitions. [2023-12-19 02:02:50,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 02:02:50,558 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 0 states have call successors, (0), 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 651 [2023-12-19 02:02:50,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 02:02:50,818 INFO L225 Difference]: With dead ends: 156329 [2023-12-19 02:02:50,818 INFO L226 Difference]: Without dead ends: 79183 [2023-12-19 02:02:50,857 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 [2023-12-19 02:02:50,858 INFO L413 NwaCegarLoop]: 305 mSDtfsCounter, 155 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 487 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 02:02:50,858 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 321 Invalid, 509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 487 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 02:02:50,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79183 states. [2023-12-19 02:02:51,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79183 to 76530. [2023-12-19 02:02:51,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76530 states, 76529 states have (on average 1.044414535666218) internal successors, (79928), 76529 states have internal predecessors, (79928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:02:51,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76530 states to 76530 states and 79928 transitions. [2023-12-19 02:02:51,912 INFO L78 Accepts]: Start accepts. Automaton has 76530 states and 79928 transitions. Word has length 651 [2023-12-19 02:02:51,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 02:02:51,913 INFO L495 AbstractCegarLoop]: Abstraction has 76530 states and 79928 transitions. [2023-12-19 02:02:51,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:02:51,913 INFO L276 IsEmpty]: Start isEmpty. Operand 76530 states and 79928 transitions. [2023-12-19 02:02:51,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 657 [2023-12-19 02:02:51,944 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 02:02:51,944 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 02:02:51,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-12-19 02:02:51,945 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 02:02:51,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 02:02:51,945 INFO L85 PathProgramCache]: Analyzing trace with hash 785077319, now seen corresponding path program 1 times [2023-12-19 02:02:51,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 02:02:51,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509630587] [2023-12-19 02:02:51,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 02:02:51,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 02:02:52,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 02:02:52,859 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 277 proven. 6 refuted. 0 times theorem prover too weak. 1341 trivial. 0 not checked. [2023-12-19 02:02:52,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 02:02:52,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509630587] [2023-12-19 02:02:52,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509630587] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 02:02:52,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [936297028] [2023-12-19 02:02:52,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 02:02:52,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 02:02:52,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 02:02:52,865 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) [2023-12-19 02:02:52,869 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-19 02:02:53,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 02:02:53,215 INFO L262 TraceCheckSpWp]: Trace formula consists of 1122 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 02:02:53,223 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 02:02:53,401 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 1103 proven. 0 refuted. 0 times theorem prover too weak. 521 trivial. 0 not checked. [2023-12-19 02:02:53,402 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 02:02:53,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [936297028] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 02:02:53,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 02:02:53,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-12-19 02:02:53,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128303230] [2023-12-19 02:02:53,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 02:02:53,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 02:02:53,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 02:02:53,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 02:02:53,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 02:02:53,404 INFO L87 Difference]: Start difference. First operand 76530 states and 79928 transitions. Second operand has 3 states, 3 states have (on average 131.0) internal successors, (393), 3 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:02:53,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 02:02:53,980 INFO L93 Difference]: Finished difference Result 147596 states and 154355 transitions. [2023-12-19 02:02:53,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 02:02:53,980 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 131.0) internal successors, (393), 3 states have internal predecessors, (393), 0 states have call successors, (0), 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 656 [2023-12-19 02:02:53,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 02:02:54,076 INFO L225 Difference]: With dead ends: 147596 [2023-12-19 02:02:54,076 INFO L226 Difference]: Without dead ends: 72080 [2023-12-19 02:02:54,115 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 658 GetRequests, 655 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 02:02:54,115 INFO L413 NwaCegarLoop]: 474 mSDtfsCounter, 109 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 663 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 02:02:54,116 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 663 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 02:02:54,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72080 states. [2023-12-19 02:02:54,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72080 to 69236. [2023-12-19 02:02:54,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69236 states, 69235 states have (on average 1.042695168628584) internal successors, (72191), 69235 states have internal predecessors, (72191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:02:55,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69236 states to 69236 states and 72191 transitions. [2023-12-19 02:02:55,049 INFO L78 Accepts]: Start accepts. Automaton has 69236 states and 72191 transitions. Word has length 656 [2023-12-19 02:02:55,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 02:02:55,050 INFO L495 AbstractCegarLoop]: Abstraction has 69236 states and 72191 transitions. [2023-12-19 02:02:55,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 131.0) internal successors, (393), 3 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:02:55,050 INFO L276 IsEmpty]: Start isEmpty. Operand 69236 states and 72191 transitions. [2023-12-19 02:02:55,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 929 [2023-12-19 02:02:55,368 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 02:02:55,368 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 9, 9, 9, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2023-12-19 02:02:55,380 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-19 02:02:55,576 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,SelfDestructingSolverStorable31 [2023-12-19 02:02:55,577 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 02:02:55,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 02:02:55,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1378181864, now seen corresponding path program 1 times [2023-12-19 02:02:55,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 02:02:55,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778409432] [2023-12-19 02:02:55,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 02:02:55,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 02:02:55,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 02:02:56,557 INFO L134 CoverageAnalysis]: Checked inductivity of 3084 backedges. 382 proven. 6 refuted. 0 times theorem prover too weak. 2696 trivial. 0 not checked. [2023-12-19 02:02:56,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 02:02:56,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778409432] [2023-12-19 02:02:56,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778409432] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 02:02:56,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [206554857] [2023-12-19 02:02:56,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 02:02:56,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 02:02:56,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 02:02:56,572 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) [2023-12-19 02:02:56,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-19 02:02:56,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 02:02:57,008 INFO L262 TraceCheckSpWp]: Trace formula consists of 1484 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 02:02:57,019 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 02:02:57,363 INFO L134 CoverageAnalysis]: Checked inductivity of 3084 backedges. 2263 proven. 0 refuted. 0 times theorem prover too weak. 821 trivial. 0 not checked. [2023-12-19 02:02:57,364 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 02:02:57,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [206554857] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 02:02:57,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 02:02:57,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-12-19 02:02:57,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756193525] [2023-12-19 02:02:57,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 02:02:57,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 02:02:57,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 02:02:57,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 02:02:57,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 02:02:57,366 INFO L87 Difference]: Start difference. First operand 69236 states and 72191 transitions. Second operand has 3 states, 3 states have (on average 147.66666666666666) internal successors, (443), 3 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:02:58,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 02:02:58,009 INFO L93 Difference]: Finished difference Result 132563 states and 138130 transitions. [2023-12-19 02:02:58,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 02:02:58,009 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 147.66666666666666) internal successors, (443), 3 states have internal predecessors, (443), 0 states have call successors, (0), 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 928 [2023-12-19 02:02:58,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 02:02:58,097 INFO L225 Difference]: With dead ends: 132563 [2023-12-19 02:02:58,097 INFO L226 Difference]: Without dead ends: 64749 [2023-12-19 02:02:58,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 930 GetRequests, 927 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 02:02:58,128 INFO L413 NwaCegarLoop]: 492 mSDtfsCounter, 121 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 692 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 02:02:58,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 692 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 02:02:58,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64749 states. [2023-12-19 02:02:58,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64749 to 62719. [2023-12-19 02:02:58,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62719 states, 62718 states have (on average 1.0354124812653465) internal successors, (64939), 62718 states have internal predecessors, (64939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:02:59,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62719 states to 62719 states and 64939 transitions. [2023-12-19 02:02:59,022 INFO L78 Accepts]: Start accepts. Automaton has 62719 states and 64939 transitions. Word has length 928 [2023-12-19 02:02:59,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 02:02:59,023 INFO L495 AbstractCegarLoop]: Abstraction has 62719 states and 64939 transitions. [2023-12-19 02:02:59,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 147.66666666666666) internal successors, (443), 3 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:02:59,023 INFO L276 IsEmpty]: Start isEmpty. Operand 62719 states and 64939 transitions. [2023-12-19 02:02:59,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 976 [2023-12-19 02:02:59,081 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 02:02:59,081 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 12, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 02:02:59,089 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-19 02:02:59,282 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,SelfDestructingSolverStorable32 [2023-12-19 02:02:59,282 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 02:02:59,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 02:02:59,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1150730429, now seen corresponding path program 1 times [2023-12-19 02:02:59,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 02:02:59,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764634743] [2023-12-19 02:02:59,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 02:02:59,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 02:02:59,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 02:03:00,489 INFO L134 CoverageAnalysis]: Checked inductivity of 4385 backedges. 499 proven. 6 refuted. 0 times theorem prover too weak. 3880 trivial. 0 not checked. [2023-12-19 02:03:00,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 02:03:00,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764634743] [2023-12-19 02:03:00,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764634743] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 02:03:00,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2116572989] [2023-12-19 02:03:00,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 02:03:00,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 02:03:00,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 02:03:00,491 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) [2023-12-19 02:03:00,493 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-19 02:03:00,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 02:03:00,910 INFO L262 TraceCheckSpWp]: Trace formula consists of 1650 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 02:03:00,921 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 02:03:01,531 INFO L134 CoverageAnalysis]: Checked inductivity of 4385 backedges. 2064 proven. 0 refuted. 0 times theorem prover too weak. 2321 trivial. 0 not checked. [2023-12-19 02:03:01,532 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 02:03:01,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2116572989] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 02:03:01,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 02:03:01,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2023-12-19 02:03:01,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113947710] [2023-12-19 02:03:01,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 02:03:01,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 02:03:01,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 02:03:01,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 02:03:01,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 02:03:01,534 INFO L87 Difference]: Start difference. First operand 62719 states and 64939 transitions. Second operand has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 2 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:03:02,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 02:03:02,037 INFO L93 Difference]: Finished difference Result 164756 states and 170583 transitions. [2023-12-19 02:03:02,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 02:03:02,037 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 2 states have internal predecessors, (310), 0 states have call successors, (0), 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 975 [2023-12-19 02:03:02,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 02:03:02,176 INFO L225 Difference]: With dead ends: 164756 [2023-12-19 02:03:02,176 INFO L226 Difference]: Without dead ends: 103865 [2023-12-19 02:03:02,218 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 977 GetRequests, 974 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 02:03:02,218 INFO L413 NwaCegarLoop]: 252 mSDtfsCounter, 145 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 472 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 02:03:02,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 472 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 02:03:02,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103865 states. [2023-12-19 02:03:03,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103865 to 101624. [2023-12-19 02:03:03,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101624 states, 101623 states have (on average 1.0356120169646634) internal successors, (105242), 101623 states have internal predecessors, (105242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:03:03,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101624 states to 101624 states and 105242 transitions. [2023-12-19 02:03:03,700 INFO L78 Accepts]: Start accepts. Automaton has 101624 states and 105242 transitions. Word has length 975 [2023-12-19 02:03:03,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 02:03:03,700 INFO L495 AbstractCegarLoop]: Abstraction has 101624 states and 105242 transitions. [2023-12-19 02:03:03,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 2 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:03:03,700 INFO L276 IsEmpty]: Start isEmpty. Operand 101624 states and 105242 transitions. [2023-12-19 02:03:03,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1012 [2023-12-19 02:03:03,783 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 02:03:03,783 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 02:03:03,790 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-19 02:03:03,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2023-12-19 02:03:03,984 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 02:03:03,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 02:03:03,985 INFO L85 PathProgramCache]: Analyzing trace with hash 605630796, now seen corresponding path program 1 times [2023-12-19 02:03:03,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 02:03:03,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900996612] [2023-12-19 02:03:03,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 02:03:03,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 02:03:04,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 02:03:05,428 INFO L134 CoverageAnalysis]: Checked inductivity of 4093 backedges. 443 proven. 6 refuted. 0 times theorem prover too weak. 3644 trivial. 0 not checked. [2023-12-19 02:03:05,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 02:03:05,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900996612] [2023-12-19 02:03:05,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900996612] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 02:03:05,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1313251611] [2023-12-19 02:03:05,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 02:03:05,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 02:03:05,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 02:03:05,430 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 02:03:05,433 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-19 02:03:05,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 02:03:05,839 INFO L262 TraceCheckSpWp]: Trace formula consists of 1609 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 02:03:05,851 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 02:03:07,182 INFO L134 CoverageAnalysis]: Checked inductivity of 4093 backedges. 3273 proven. 0 refuted. 0 times theorem prover too weak. 820 trivial. 0 not checked. [2023-12-19 02:03:07,182 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 02:03:07,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1313251611] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 02:03:07,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 02:03:07,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [3] total 7 [2023-12-19 02:03:07,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524191585] [2023-12-19 02:03:07,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 02:03:07,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 02:03:07,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 02:03:07,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 02:03:07,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-19 02:03:07,184 INFO L87 Difference]: Start difference. First operand 101624 states and 105242 transitions. Second operand has 5 states, 5 states have (on average 112.2) internal successors, (561), 5 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:03:08,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 02:03:08,492 INFO L93 Difference]: Finished difference Result 261485 states and 270438 transitions. [2023-12-19 02:03:08,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 02:03:08,493 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 112.2) internal successors, (561), 5 states have internal predecessors, (561), 0 states have call successors, (0), 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 1011 [2023-12-19 02:03:08,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 02:03:08,724 INFO L225 Difference]: With dead ends: 261485 [2023-12-19 02:03:08,724 INFO L226 Difference]: Without dead ends: 161689 [2023-12-19 02:03:08,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1013 GetRequests, 1008 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-19 02:03:08,790 INFO L413 NwaCegarLoop]: 487 mSDtfsCounter, 456 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 645 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 456 SdHoareTripleChecker+Valid, 914 SdHoareTripleChecker+Invalid, 680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 02:03:08,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [456 Valid, 914 Invalid, 680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 645 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 02:03:08,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161689 states. [2023-12-19 02:03:10,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161689 to 157811. [2023-12-19 02:03:10,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157811 states, 157810 states have (on average 1.0333185476205564) internal successors, (163068), 157810 states have internal predecessors, (163068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:03:11,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157811 states to 157811 states and 163068 transitions. [2023-12-19 02:03:11,043 INFO L78 Accepts]: Start accepts. Automaton has 157811 states and 163068 transitions. Word has length 1011 [2023-12-19 02:03:11,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 02:03:11,044 INFO L495 AbstractCegarLoop]: Abstraction has 157811 states and 163068 transitions. [2023-12-19 02:03:11,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 112.2) internal successors, (561), 5 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:03:11,044 INFO L276 IsEmpty]: Start isEmpty. Operand 157811 states and 163068 transitions. [2023-12-19 02:03:11,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1060 [2023-12-19 02:03:11,527 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 02:03:11,527 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2023-12-19 02:03:11,537 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-19 02:03:11,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-12-19 02:03:11,728 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 02:03:11,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 02:03:11,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1780291079, now seen corresponding path program 1 times [2023-12-19 02:03:11,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 02:03:11,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314259533] [2023-12-19 02:03:11,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 02:03:11,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 02:03:11,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 02:03:12,999 INFO L134 CoverageAnalysis]: Checked inductivity of 4042 backedges. 419 proven. 6 refuted. 0 times theorem prover too weak. 3617 trivial. 0 not checked. [2023-12-19 02:03:13,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 02:03:13,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314259533] [2023-12-19 02:03:13,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314259533] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 02:03:13,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1642318570] [2023-12-19 02:03:13,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 02:03:13,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 02:03:13,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 02:03:13,003 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 02:03:13,005 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-19 02:03:13,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 02:03:13,418 INFO L262 TraceCheckSpWp]: Trace formula consists of 1659 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 02:03:13,426 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 02:03:13,569 INFO L134 CoverageAnalysis]: Checked inductivity of 4042 backedges. 2666 proven. 0 refuted. 0 times theorem prover too weak. 1376 trivial. 0 not checked. [2023-12-19 02:03:13,569 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 02:03:13,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1642318570] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 02:03:13,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 02:03:13,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-12-19 02:03:13,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80552178] [2023-12-19 02:03:13,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 02:03:13,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 02:03:13,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 02:03:13,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 02:03:13,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 02:03:13,571 INFO L87 Difference]: Start difference. First operand 157811 states and 163068 transitions. Second operand has 3 states, 3 states have (on average 143.33333333333334) internal successors, (430), 3 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:03:14,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 02:03:14,714 INFO L93 Difference]: Finished difference Result 393056 states and 406128 transitions. [2023-12-19 02:03:14,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 02:03:14,714 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 143.33333333333334) internal successors, (430), 3 states have internal predecessors, (430), 0 states have call successors, (0), 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 1059 [2023-12-19 02:03:14,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 02:03:15,068 INFO L225 Difference]: With dead ends: 393056 [2023-12-19 02:03:15,069 INFO L226 Difference]: Without dead ends: 232802 [2023-12-19 02:03:15,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1061 GetRequests, 1058 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 02:03:15,496 INFO L413 NwaCegarLoop]: 515 mSDtfsCounter, 148 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 734 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 02:03:15,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 734 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 02:03:15,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232802 states. [2023-12-19 02:03:18,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232802 to 220809. [2023-12-19 02:03:18,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220809 states, 220808 states have (on average 1.0316066446867866) internal successors, (227787), 220808 states have internal predecessors, (227787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:03:18,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220809 states to 220809 states and 227787 transitions. [2023-12-19 02:03:18,690 INFO L78 Accepts]: Start accepts. Automaton has 220809 states and 227787 transitions. Word has length 1059 [2023-12-19 02:03:18,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 02:03:18,691 INFO L495 AbstractCegarLoop]: Abstraction has 220809 states and 227787 transitions. [2023-12-19 02:03:18,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 143.33333333333334) internal successors, (430), 3 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:03:18,691 INFO L276 IsEmpty]: Start isEmpty. Operand 220809 states and 227787 transitions. [2023-12-19 02:03:19,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1062 [2023-12-19 02:03:19,147 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 02:03:19,148 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 15, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 11, 11, 11, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 02:03:19,157 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-19 02:03:19,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 02:03:19,349 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 02:03:19,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 02:03:19,349 INFO L85 PathProgramCache]: Analyzing trace with hash 200342091, now seen corresponding path program 1 times [2023-12-19 02:03:19,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 02:03:19,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883603659] [2023-12-19 02:03:19,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 02:03:19,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 02:03:19,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 02:03:20,576 INFO L134 CoverageAnalysis]: Checked inductivity of 4325 backedges. 456 proven. 6 refuted. 0 times theorem prover too weak. 3863 trivial. 0 not checked. [2023-12-19 02:03:20,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 02:03:20,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883603659] [2023-12-19 02:03:20,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883603659] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 02:03:20,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1553930500] [2023-12-19 02:03:20,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 02:03:20,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 02:03:20,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 02:03:20,577 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 02:03:20,582 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-19 02:03:21,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 02:03:21,012 INFO L262 TraceCheckSpWp]: Trace formula consists of 1693 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 02:03:21,019 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 02:03:21,063 INFO L134 CoverageAnalysis]: Checked inductivity of 4325 backedges. 2596 proven. 0 refuted. 0 times theorem prover too weak. 1729 trivial. 0 not checked. [2023-12-19 02:03:21,063 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 02:03:21,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1553930500] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 02:03:21,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 02:03:21,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-12-19 02:03:21,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37373574] [2023-12-19 02:03:21,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 02:03:21,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 02:03:21,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 02:03:21,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 02:03:21,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 02:03:21,065 INFO L87 Difference]: Start difference. First operand 220809 states and 227787 transitions. Second operand has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:03:22,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 02:03:22,596 INFO L93 Difference]: Finished difference Result 420064 states and 433506 transitions. [2023-12-19 02:03:22,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 02:03:22,597 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 0 states have call successors, (0), 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 1061 [2023-12-19 02:03:22,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 02:03:23,337 INFO L225 Difference]: With dead ends: 420064 [2023-12-19 02:03:23,338 INFO L226 Difference]: Without dead ends: 201083 [2023-12-19 02:03:23,478 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1063 GetRequests, 1060 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 02:03:23,480 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 223 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 515 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 02:03:23,480 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 268 Invalid, 528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 515 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 02:03:23,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201083 states. [2023-12-19 02:03:26,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201083 to 196984. [2023-12-19 02:03:26,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196984 states, 196983 states have (on average 1.0314291080956224) internal successors, (203174), 196983 states have internal predecessors, (203174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:03:26,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196984 states to 196984 states and 203174 transitions. [2023-12-19 02:03:26,900 INFO L78 Accepts]: Start accepts. Automaton has 196984 states and 203174 transitions. Word has length 1061 [2023-12-19 02:03:26,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 02:03:26,900 INFO L495 AbstractCegarLoop]: Abstraction has 196984 states and 203174 transitions. [2023-12-19 02:03:26,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:03:26,901 INFO L276 IsEmpty]: Start isEmpty. Operand 196984 states and 203174 transitions. [2023-12-19 02:03:27,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1138 [2023-12-19 02:03:27,060 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 02:03:27,061 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 12, 12, 12, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 02:03:27,068 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-19 02:03:27,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-12-19 02:03:27,262 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 02:03:27,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 02:03:27,262 INFO L85 PathProgramCache]: Analyzing trace with hash 16904402, now seen corresponding path program 1 times [2023-12-19 02:03:27,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 02:03:27,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895686393] [2023-12-19 02:03:27,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 02:03:27,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 02:03:27,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 02:03:28,835 INFO L134 CoverageAnalysis]: Checked inductivity of 5090 backedges. 493 proven. 6 refuted. 0 times theorem prover too weak. 4591 trivial. 0 not checked. [2023-12-19 02:03:28,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 02:03:28,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895686393] [2023-12-19 02:03:28,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895686393] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 02:03:28,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [625119604] [2023-12-19 02:03:28,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 02:03:28,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 02:03:28,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 02:03:28,837 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 02:03:28,839 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-19 02:03:29,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 02:03:29,317 INFO L262 TraceCheckSpWp]: Trace formula consists of 1806 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 02:03:29,327 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 02:03:29,728 INFO L134 CoverageAnalysis]: Checked inductivity of 5090 backedges. 3374 proven. 312 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2023-12-19 02:03:29,729 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 02:03:30,166 INFO L134 CoverageAnalysis]: Checked inductivity of 5090 backedges. 3374 proven. 312 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2023-12-19 02:03:30,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [625119604] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 02:03:30,167 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 02:03:30,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 5, 5] total 7 [2023-12-19 02:03:30,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409681381] [2023-12-19 02:03:30,167 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 02:03:30,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 02:03:30,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 02:03:30,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 02:03:30,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-19 02:03:30,170 INFO L87 Difference]: Start difference. First operand 196984 states and 203174 transitions. Second operand has 7 states, 7 states have (on average 79.85714285714286) internal successors, (559), 7 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:03:37,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 02:03:37,440 INFO L93 Difference]: Finished difference Result 536697 states and 553805 transitions. [2023-12-19 02:03:37,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-19 02:03:37,441 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 79.85714285714286) internal successors, (559), 7 states have internal predecessors, (559), 0 states have call successors, (0), 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 1137 [2023-12-19 02:03:37,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 02:03:37,978 INFO L225 Difference]: With dead ends: 536697 [2023-12-19 02:03:37,978 INFO L226 Difference]: Without dead ends: 333611 [2023-12-19 02:03:38,111 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2310 GetRequests, 2287 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=162, Invalid=438, Unknown=0, NotChecked=0, Total=600 [2023-12-19 02:03:38,112 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 1689 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 7962 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1689 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 8076 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 7962 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2023-12-19 02:03:38,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1689 Valid, 421 Invalid, 8076 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 7962 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2023-12-19 02:03:38,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333611 states. [2023-12-19 02:03:41,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333611 to 228288. [2023-12-19 02:03:41,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228288 states, 228287 states have (on average 1.0310968211067648) internal successors, (235386), 228287 states have internal predecessors, (235386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:03:42,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228288 states to 228288 states and 235386 transitions. [2023-12-19 02:03:42,402 INFO L78 Accepts]: Start accepts. Automaton has 228288 states and 235386 transitions. Word has length 1137 [2023-12-19 02:03:42,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 02:03:42,402 INFO L495 AbstractCegarLoop]: Abstraction has 228288 states and 235386 transitions. [2023-12-19 02:03:42,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 79.85714285714286) internal successors, (559), 7 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:03:42,403 INFO L276 IsEmpty]: Start isEmpty. Operand 228288 states and 235386 transitions. [2023-12-19 02:03:42,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1421 [2023-12-19 02:03:42,662 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 02:03:42,662 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 19, 19, 19, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 17, 17, 17, 17, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 10, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-19 02:03:42,673 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-19 02:03:42,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-12-19 02:03:42,863 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 02:03:42,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 02:03:42,863 INFO L85 PathProgramCache]: Analyzing trace with hash -300350025, now seen corresponding path program 1 times [2023-12-19 02:03:42,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 02:03:42,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034757953] [2023-12-19 02:03:42,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 02:03:42,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 02:03:43,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 02:03:47,528 INFO L134 CoverageAnalysis]: Checked inductivity of 8770 backedges. 2662 proven. 143 refuted. 0 times theorem prover too weak. 5965 trivial. 0 not checked. [2023-12-19 02:03:47,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 02:03:47,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034757953] [2023-12-19 02:03:47,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034757953] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 02:03:47,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [900232631] [2023-12-19 02:03:47,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 02:03:47,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 02:03:47,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 02:03:47,533 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 02:03:47,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-19 02:03:48,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 02:03:48,141 INFO L262 TraceCheckSpWp]: Trace formula consists of 2243 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 02:03:48,153 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 02:03:49,757 INFO L134 CoverageAnalysis]: Checked inductivity of 8770 backedges. 7044 proven. 0 refuted. 0 times theorem prover too weak. 1726 trivial. 0 not checked. [2023-12-19 02:03:49,758 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 02:03:49,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [900232631] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 02:03:49,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 02:03:49,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 11 [2023-12-19 02:03:49,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82323889] [2023-12-19 02:03:49,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 02:03:49,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 02:03:49,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 02:03:49,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 02:03:49,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-12-19 02:03:49,761 INFO L87 Difference]: Start difference. First operand 228288 states and 235386 transitions. Second operand has 5 states, 5 states have (on average 127.0) internal successors, (635), 5 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:03:51,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 02:03:51,519 INFO L93 Difference]: Finished difference Result 455934 states and 469886 transitions. [2023-12-19 02:03:51,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 02:03:51,520 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 127.0) internal successors, (635), 5 states have internal predecessors, (635), 0 states have call successors, (0), 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 1420 [2023-12-19 02:03:51,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 02:03:51,527 INFO L225 Difference]: With dead ends: 455934 [2023-12-19 02:03:51,527 INFO L226 Difference]: Without dead ends: 0 [2023-12-19 02:03:51,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1426 GetRequests, 1417 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-12-19 02:03:51,668 INFO L413 NwaCegarLoop]: 686 mSDtfsCounter, 365 mSDsluCounter, 571 mSDsCounter, 0 mSdLazyCounter, 765 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 365 SdHoareTripleChecker+Valid, 1257 SdHoareTripleChecker+Invalid, 785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 765 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 02:03:51,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [365 Valid, 1257 Invalid, 785 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 765 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 02:03:51,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-19 02:03:51,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-19 02:03:51,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:03:51,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-19 02:03:51,669 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 1420 [2023-12-19 02:03:51,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 02:03:51,669 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-19 02:03:51,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 127.0) internal successors, (635), 5 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 02:03:51,669 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-19 02:03:51,670 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-19 02:03:51,672 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-19 02:03:51,681 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-12-19 02:03:51,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-12-19 02:03:51,876 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.