/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/combinations/pals_lcr.5.ufo.UNBOUNDED.pals+Problem12_label05.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 00:32:55,572 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 00:32:55,639 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 00:32:55,643 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 00:32:55,643 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 00:32:55,663 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 00:32:55,664 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 00:32:55,664 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 00:32:55,664 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 00:32:55,667 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 00:32:55,667 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 00:32:55,668 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 00:32:55,668 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 00:32:55,669 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 00:32:55,669 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 00:32:55,669 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 00:32:55,670 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 00:32:55,670 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 00:32:55,670 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 00:32:55,670 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 00:32:55,670 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 00:32:55,670 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 00:32:55,671 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 00:32:55,671 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 00:32:55,671 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 00:32:55,671 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 00:32:55,671 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 00:32:55,671 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 00:32:55,672 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 00:32:55,672 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 00:32:55,673 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 00:32:55,673 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 00:32:55,673 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 00:32:55,673 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 00:32:55,673 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 00:32:55,673 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 00:32:55,673 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 00:32:55,673 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 00:32:55,673 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 00:32:55,674 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 00:32:55,674 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 00:32:55,674 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 00:32:55,674 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 00:32:55,674 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 00:32:55,880 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 00:32:55,904 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 00:32:55,906 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 00:32:55,907 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 00:32:55,907 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 00:32:55,908 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pals_lcr.5.ufo.UNBOUNDED.pals+Problem12_label05.c [2023-12-19 00:32:56,984 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 00:32:57,340 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 00:32:57,341 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.5.ufo.UNBOUNDED.pals+Problem12_label05.c [2023-12-19 00:32:57,362 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28b40860d/c85e8b297b57492894355e54d0cff646/FLAG480baaa54 [2023-12-19 00:32:57,377 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28b40860d/c85e8b297b57492894355e54d0cff646 [2023-12-19 00:32:57,378 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 00:32:57,379 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 00:32:57,380 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 00:32:57,381 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 00:32:57,384 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 00:32:57,385 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 12:32:57" (1/1) ... [2023-12-19 00:32:57,385 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78637506 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:32:57, skipping insertion in model container [2023-12-19 00:32:57,385 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 12:32:57" (1/1) ... [2023-12-19 00:32:57,528 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 00:32:57,771 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.5.ufo.UNBOUNDED.pals+Problem12_label05.c[11668,11681] [2023-12-19 00:32:57,815 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.5.ufo.UNBOUNDED.pals+Problem12_label05.c[18604,18617] [2023-12-19 00:32:58,301 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 00:32:58,310 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 00:32:58,345 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.5.ufo.UNBOUNDED.pals+Problem12_label05.c[11668,11681] [2023-12-19 00:32:58,352 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.5.ufo.UNBOUNDED.pals+Problem12_label05.c[18604,18617] [2023-12-19 00:32:58,703 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 00:32:58,727 INFO L206 MainTranslator]: Completed translation [2023-12-19 00:32:58,728 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:32:58 WrapperNode [2023-12-19 00:32:58,728 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 00:32:58,729 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 00:32:58,729 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 00:32:58,729 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 00:32:58,734 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:32:58" (1/1) ... [2023-12-19 00:32:58,798 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:32:58" (1/1) ... [2023-12-19 00:32:59,100 INFO L138 Inliner]: procedures = 37, calls = 22, calls flagged for inlining = 17, calls inlined = 17, statements flattened = 5092 [2023-12-19 00:32:59,100 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 00:32:59,101 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 00:32:59,101 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 00:32:59,101 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 00:32:59,108 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:32:58" (1/1) ... [2023-12-19 00:32:59,109 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:32:58" (1/1) ... [2023-12-19 00:32:59,140 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:32:58" (1/1) ... [2023-12-19 00:32:59,321 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 00:32:59,321 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:32:58" (1/1) ... [2023-12-19 00:32:59,321 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:32:58" (1/1) ... [2023-12-19 00:32:59,449 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:32:58" (1/1) ... [2023-12-19 00:32:59,469 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:32:58" (1/1) ... [2023-12-19 00:32:59,487 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:32:58" (1/1) ... [2023-12-19 00:32:59,499 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:32:58" (1/1) ... [2023-12-19 00:32:59,539 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 00:32:59,540 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 00:32:59,541 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 00:32:59,541 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 00:32:59,541 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:32:58" (1/1) ... [2023-12-19 00:32:59,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 00:32:59,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:32:59,564 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 00:32:59,610 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 00:32:59,614 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 00:32:59,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 00:32:59,614 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 00:32:59,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 00:32:59,697 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 00:32:59,698 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 00:33:02,670 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 00:33:02,716 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 00:33:02,716 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-19 00:33:02,717 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 12:33:02 BoogieIcfgContainer [2023-12-19 00:33:02,717 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 00:33:02,718 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 00:33:02,718 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 00:33:02,720 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 00:33:02,721 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 12:32:57" (1/3) ... [2023-12-19 00:33:02,721 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24499ddb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 12:33:02, skipping insertion in model container [2023-12-19 00:33:02,721 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:32:58" (2/3) ... [2023-12-19 00:33:02,721 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24499ddb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 12:33:02, skipping insertion in model container [2023-12-19 00:33:02,721 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 12:33:02" (3/3) ... [2023-12-19 00:33:02,722 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.ufo.UNBOUNDED.pals+Problem12_label05.c [2023-12-19 00:33:02,734 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 00:33:02,734 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-19 00:33:02,774 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 00:33:02,778 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;@4d69417f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 00:33:02,778 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-19 00:33:02,784 INFO L276 IsEmpty]: Start isEmpty. Operand has 836 states, 833 states have (on average 1.9747899159663866) internal successors, (1645), 835 states have internal predecessors, (1645), 0 states have call successors, (0), 0 states 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 00:33:02,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-19 00:33:02,789 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:33:02,790 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] [2023-12-19 00:33:02,790 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:33:02,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:33:02,794 INFO L85 PathProgramCache]: Analyzing trace with hash 1695124456, now seen corresponding path program 1 times [2023-12-19 00:33:02,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:33:02,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160399022] [2023-12-19 00:33:02,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:33:02,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:33:02,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:33:02,926 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 00:33:02,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:33:02,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160399022] [2023-12-19 00:33:02,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160399022] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:33:02,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:33:02,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 00:33:02,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088812233] [2023-12-19 00:33:02,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:33:02,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 00:33:02,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:33:02,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 00:33:02,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 00:33:02,951 INFO L87 Difference]: Start difference. First operand has 836 states, 833 states have (on average 1.9747899159663866) internal successors, (1645), 835 states have internal predecessors, (1645), 0 states have call successors, (0), 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 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states 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 00:33:03,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:33:03,021 INFO L93 Difference]: Finished difference Result 1636 states and 3221 transitions. [2023-12-19 00:33:03,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 00:33:03,023 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2023-12-19 00:33:03,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:33:03,035 INFO L225 Difference]: With dead ends: 1636 [2023-12-19 00:33:03,035 INFO L226 Difference]: Without dead ends: 832 [2023-12-19 00:33:03,040 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 00:33:03,042 INFO L413 NwaCegarLoop]: 1573 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1573 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 00:33:03,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1573 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:33:03,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 832 states. [2023-12-19 00:33:03,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 832 to 832. [2023-12-19 00:33:03,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 832 states, 830 states have (on average 1.8963855421686746) internal successors, (1574), 831 states have internal predecessors, (1574), 0 states have call successors, (0), 0 states 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 00:33:03,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 832 states to 832 states and 1574 transitions. [2023-12-19 00:33:03,092 INFO L78 Accepts]: Start accepts. Automaton has 832 states and 1574 transitions. Word has length 21 [2023-12-19 00:33:03,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:33:03,092 INFO L495 AbstractCegarLoop]: Abstraction has 832 states and 1574 transitions. [2023-12-19 00:33:03,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states 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 00:33:03,093 INFO L276 IsEmpty]: Start isEmpty. Operand 832 states and 1574 transitions. [2023-12-19 00:33:03,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-19 00:33:03,093 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:33:03,093 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:33:03,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-19 00:33:03,094 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:33:03,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:33:03,094 INFO L85 PathProgramCache]: Analyzing trace with hash 106776554, now seen corresponding path program 1 times [2023-12-19 00:33:03,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:33:03,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631149232] [2023-12-19 00:33:03,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:33:03,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:33:03,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:33:03,324 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 00:33:03,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:33:03,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631149232] [2023-12-19 00:33:03,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631149232] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:33:03,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:33:03,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 00:33:03,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051922353] [2023-12-19 00:33:03,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:33:03,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 00:33:03,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:33:03,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 00:33:03,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 00:33:03,327 INFO L87 Difference]: Start difference. First operand 832 states and 1574 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states 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 00:33:03,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:33:03,408 INFO L93 Difference]: Finished difference Result 878 states and 1646 transitions. [2023-12-19 00:33:03,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 00:33:03,409 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2023-12-19 00:33:03,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:33:03,411 INFO L225 Difference]: With dead ends: 878 [2023-12-19 00:33:03,412 INFO L226 Difference]: Without dead ends: 832 [2023-12-19 00:33:03,412 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 00:33:03,413 INFO L413 NwaCegarLoop]: 1571 mSDtfsCounter, 0 mSDsluCounter, 3107 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4678 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 00:33:03,413 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4678 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:33:03,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 832 states. [2023-12-19 00:33:03,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 832 to 832. [2023-12-19 00:33:03,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 832 states, 830 states have (on average 1.8590361445783132) internal successors, (1543), 831 states have internal predecessors, (1543), 0 states have call successors, (0), 0 states 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 00:33:03,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 832 states to 832 states and 1543 transitions. [2023-12-19 00:33:03,428 INFO L78 Accepts]: Start accepts. Automaton has 832 states and 1543 transitions. Word has length 21 [2023-12-19 00:33:03,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:33:03,428 INFO L495 AbstractCegarLoop]: Abstraction has 832 states and 1543 transitions. [2023-12-19 00:33:03,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states 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 00:33:03,428 INFO L276 IsEmpty]: Start isEmpty. Operand 832 states and 1543 transitions. [2023-12-19 00:33:03,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-19 00:33:03,430 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:33:03,430 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:33:03,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-19 00:33:03,430 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:33:03,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:33:03,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1212970817, now seen corresponding path program 1 times [2023-12-19 00:33:03,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:33:03,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247565638] [2023-12-19 00:33:03,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:33:03,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:33:03,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:33:03,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:33:03,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:33:03,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247565638] [2023-12-19 00:33:03,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247565638] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:33:03,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:33:03,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 00:33:03,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40653882] [2023-12-19 00:33:03,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:33:03,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 00:33:03,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:33:03,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 00:33:03,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 00:33:03,609 INFO L87 Difference]: Start difference. First operand 832 states and 1543 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:33:03,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:33:03,865 INFO L93 Difference]: Finished difference Result 1262 states and 2233 transitions. [2023-12-19 00:33:03,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-19 00:33:03,866 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2023-12-19 00:33:03,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:33:03,885 INFO L225 Difference]: With dead ends: 1262 [2023-12-19 00:33:03,886 INFO L226 Difference]: Without dead ends: 1219 [2023-12-19 00:33:03,886 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2023-12-19 00:33:03,887 INFO L413 NwaCegarLoop]: 1534 mSDtfsCounter, 7959 mSDsluCounter, 1120 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7959 SdHoareTripleChecker+Valid, 2654 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 00:33:03,887 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7959 Valid, 2654 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 00:33:03,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1219 states. [2023-12-19 00:33:03,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1219 to 873. [2023-12-19 00:33:03,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 873 states, 871 states have (on average 1.8473019517795637) internal successors, (1609), 872 states have internal predecessors, (1609), 0 states have call successors, (0), 0 states 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 00:33:03,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 873 states to 873 states and 1609 transitions. [2023-12-19 00:33:03,902 INFO L78 Accepts]: Start accepts. Automaton has 873 states and 1609 transitions. Word has length 51 [2023-12-19 00:33:03,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:33:03,903 INFO L495 AbstractCegarLoop]: Abstraction has 873 states and 1609 transitions. [2023-12-19 00:33:03,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:33:03,903 INFO L276 IsEmpty]: Start isEmpty. Operand 873 states and 1609 transitions. [2023-12-19 00:33:03,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-19 00:33:03,904 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:33:03,905 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:33:03,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-19 00:33:03,905 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:33:03,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:33:03,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1583068337, now seen corresponding path program 1 times [2023-12-19 00:33:03,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:33:03,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293951147] [2023-12-19 00:33:03,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:33:03,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:33:03,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:33:03,994 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 00:33:03,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:33:03,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293951147] [2023-12-19 00:33:03,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293951147] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:33:03,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:33:03,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:33:03,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447230266] [2023-12-19 00:33:03,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:33:03,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 00:33:03,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:33:03,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 00:33:03,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:33:03,996 INFO L87 Difference]: Start difference. First operand 873 states and 1609 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:33:04,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:33:04,025 INFO L93 Difference]: Finished difference Result 1030 states and 1860 transitions. [2023-12-19 00:33:04,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 00:33:04,026 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2023-12-19 00:33:04,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:33:04,029 INFO L225 Difference]: With dead ends: 1030 [2023-12-19 00:33:04,029 INFO L226 Difference]: Without dead ends: 946 [2023-12-19 00:33:04,029 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 00:33:04,030 INFO L413 NwaCegarLoop]: 1536 mSDtfsCounter, 1482 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1482 SdHoareTripleChecker+Valid, 1597 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 00:33:04,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1482 Valid, 1597 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:33:04,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 946 states. [2023-12-19 00:33:04,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 946 to 942. [2023-12-19 00:33:04,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 942 states, 940 states have (on average 1.8265957446808512) internal successors, (1717), 941 states have internal predecessors, (1717), 0 states have call successors, (0), 0 states 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 00:33:04,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 942 states to 942 states and 1717 transitions. [2023-12-19 00:33:04,044 INFO L78 Accepts]: Start accepts. Automaton has 942 states and 1717 transitions. Word has length 53 [2023-12-19 00:33:04,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:33:04,044 INFO L495 AbstractCegarLoop]: Abstraction has 942 states and 1717 transitions. [2023-12-19 00:33:04,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:33:04,044 INFO L276 IsEmpty]: Start isEmpty. Operand 942 states and 1717 transitions. [2023-12-19 00:33:04,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-19 00:33:04,061 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:33:04,061 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:33:04,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-19 00:33:04,061 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:33:04,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:33:04,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1585213289, now seen corresponding path program 1 times [2023-12-19 00:33:04,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:33:04,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328417898] [2023-12-19 00:33:04,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:33:04,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:33:04,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:33:04,231 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 00:33:04,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:33:04,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328417898] [2023-12-19 00:33:04,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328417898] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:33:04,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:33:04,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 00:33:04,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906438411] [2023-12-19 00:33:04,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:33:04,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 00:33:04,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:33:04,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 00:33:04,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-19 00:33:04,235 INFO L87 Difference]: Start difference. First operand 942 states and 1717 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:33:04,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:33:04,422 INFO L93 Difference]: Finished difference Result 1097 states and 1961 transitions. [2023-12-19 00:33:04,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 00:33:04,423 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2023-12-19 00:33:04,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:33:04,428 INFO L225 Difference]: With dead ends: 1097 [2023-12-19 00:33:04,429 INFO L226 Difference]: Without dead ends: 944 [2023-12-19 00:33:04,431 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2023-12-19 00:33:04,433 INFO L413 NwaCegarLoop]: 1533 mSDtfsCounter, 7454 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7454 SdHoareTripleChecker+Valid, 1790 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 00:33:04,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7454 Valid, 1790 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:33:04,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 944 states. [2023-12-19 00:33:04,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 944 to 942. [2023-12-19 00:33:04,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 942 states, 940 states have (on average 1.824468085106383) internal successors, (1715), 941 states have internal predecessors, (1715), 0 states have call successors, (0), 0 states 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 00:33:04,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 942 states to 942 states and 1715 transitions. [2023-12-19 00:33:04,455 INFO L78 Accepts]: Start accepts. Automaton has 942 states and 1715 transitions. Word has length 53 [2023-12-19 00:33:04,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:33:04,456 INFO L495 AbstractCegarLoop]: Abstraction has 942 states and 1715 transitions. [2023-12-19 00:33:04,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:33:04,456 INFO L276 IsEmpty]: Start isEmpty. Operand 942 states and 1715 transitions. [2023-12-19 00:33:04,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-19 00:33:04,457 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:33:04,458 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:33:04,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-19 00:33:04,458 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:33:04,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:33:04,459 INFO L85 PathProgramCache]: Analyzing trace with hash 1767896271, now seen corresponding path program 1 times [2023-12-19 00:33:04,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:33:04,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973938429] [2023-12-19 00:33:04,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:33:04,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:33:04,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:33:04,640 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 00:33:04,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:33:04,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973938429] [2023-12-19 00:33:04,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973938429] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:33:04,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:33:04,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 00:33:04,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715050414] [2023-12-19 00:33:04,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:33:04,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 00:33:04,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:33:04,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 00:33:04,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 00:33:04,642 INFO L87 Difference]: Start difference. First operand 942 states and 1715 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:33:04,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:33:04,680 INFO L93 Difference]: Finished difference Result 950 states and 1724 transitions. [2023-12-19 00:33:04,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 00:33:04,680 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2023-12-19 00:33:04,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:33:04,684 INFO L225 Difference]: With dead ends: 950 [2023-12-19 00:33:04,684 INFO L226 Difference]: Without dead ends: 948 [2023-12-19 00:33:04,684 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 00:33:04,685 INFO L413 NwaCegarLoop]: 1539 mSDtfsCounter, 1 mSDsluCounter, 3070 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4609 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 00:33:04,685 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4609 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:33:04,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 948 states. [2023-12-19 00:33:04,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 948 to 946. [2023-12-19 00:33:04,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 946 states, 944 states have (on average 1.819915254237288) internal successors, (1718), 945 states have internal predecessors, (1718), 0 states have call successors, (0), 0 states 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 00:33:04,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 946 states to 946 states and 1718 transitions. [2023-12-19 00:33:04,704 INFO L78 Accepts]: Start accepts. Automaton has 946 states and 1718 transitions. Word has length 54 [2023-12-19 00:33:04,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:33:04,705 INFO L495 AbstractCegarLoop]: Abstraction has 946 states and 1718 transitions. [2023-12-19 00:33:04,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:33:04,705 INFO L276 IsEmpty]: Start isEmpty. Operand 946 states and 1718 transitions. [2023-12-19 00:33:04,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-19 00:33:04,706 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:33:04,706 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:33:04,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-19 00:33:04,706 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:33:04,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:33:04,707 INFO L85 PathProgramCache]: Analyzing trace with hash 1923111753, now seen corresponding path program 1 times [2023-12-19 00:33:04,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:33:04,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637001558] [2023-12-19 00:33:04,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:33:04,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:33:04,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:33:04,757 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 00:33:04,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:33:04,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637001558] [2023-12-19 00:33:04,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637001558] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:33:04,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:33:04,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:33:04,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313248146] [2023-12-19 00:33:04,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:33:04,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 00:33:04,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:33:04,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 00:33:04,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:33:04,759 INFO L87 Difference]: Start difference. First operand 946 states and 1718 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:33:04,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:33:04,787 INFO L93 Difference]: Finished difference Result 1244 states and 2178 transitions. [2023-12-19 00:33:04,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 00:33:04,788 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2023-12-19 00:33:04,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:33:04,792 INFO L225 Difference]: With dead ends: 1244 [2023-12-19 00:33:04,792 INFO L226 Difference]: Without dead ends: 1087 [2023-12-19 00:33:04,793 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 00:33:04,793 INFO L413 NwaCegarLoop]: 1585 mSDtfsCounter, 1495 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1495 SdHoareTripleChecker+Valid, 1658 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 00:33:04,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1495 Valid, 1658 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:33:04,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1087 states. [2023-12-19 00:33:04,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1087 to 1085. [2023-12-19 00:33:04,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1085 states, 1083 states have (on average 1.7811634349030472) internal successors, (1929), 1084 states have internal predecessors, (1929), 0 states have call successors, (0), 0 states 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 00:33:04,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1085 states to 1085 states and 1929 transitions. [2023-12-19 00:33:04,814 INFO L78 Accepts]: Start accepts. Automaton has 1085 states and 1929 transitions. Word has length 55 [2023-12-19 00:33:04,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:33:04,814 INFO L495 AbstractCegarLoop]: Abstraction has 1085 states and 1929 transitions. [2023-12-19 00:33:04,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:33:04,815 INFO L276 IsEmpty]: Start isEmpty. Operand 1085 states and 1929 transitions. [2023-12-19 00:33:04,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-19 00:33:04,815 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:33:04,815 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:33:04,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-19 00:33:04,816 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:33:04,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:33:04,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1963055689, now seen corresponding path program 1 times [2023-12-19 00:33:04,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:33:04,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091143643] [2023-12-19 00:33:04,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:33:04,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:33:04,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:33:04,861 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 00:33:04,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:33:04,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091143643] [2023-12-19 00:33:04,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091143643] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:33:04,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:33:04,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:33:04,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051293755] [2023-12-19 00:33:04,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:33:04,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 00:33:04,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:33:04,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 00:33:04,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:33:04,863 INFO L87 Difference]: Start difference. First operand 1085 states and 1929 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:33:04,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:33:04,895 INFO L93 Difference]: Finished difference Result 1645 states and 2783 transitions. [2023-12-19 00:33:04,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 00:33:04,896 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2023-12-19 00:33:04,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:33:04,901 INFO L225 Difference]: With dead ends: 1645 [2023-12-19 00:33:04,901 INFO L226 Difference]: Without dead ends: 1349 [2023-12-19 00:33:04,902 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 00:33:04,902 INFO L413 NwaCegarLoop]: 1583 mSDtfsCounter, 1493 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1493 SdHoareTripleChecker+Valid, 1660 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 00:33:04,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1493 Valid, 1660 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:33:04,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1349 states. [2023-12-19 00:33:04,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1349 to 1347. [2023-12-19 00:33:04,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1347 states, 1345 states have (on average 1.7241635687732342) internal successors, (2319), 1346 states have internal predecessors, (2319), 0 states have call successors, (0), 0 states 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 00:33:04,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1347 states to 1347 states and 2319 transitions. [2023-12-19 00:33:04,930 INFO L78 Accepts]: Start accepts. Automaton has 1347 states and 2319 transitions. Word has length 55 [2023-12-19 00:33:04,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:33:04,930 INFO L495 AbstractCegarLoop]: Abstraction has 1347 states and 2319 transitions. [2023-12-19 00:33:04,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:33:04,930 INFO L276 IsEmpty]: Start isEmpty. Operand 1347 states and 2319 transitions. [2023-12-19 00:33:04,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-19 00:33:04,931 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:33:04,931 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:33:04,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-19 00:33:04,931 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:33:04,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:33:04,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1337399625, now seen corresponding path program 1 times [2023-12-19 00:33:04,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:33:04,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141720430] [2023-12-19 00:33:04,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:33:04,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:33:04,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:33:04,973 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 00:33:04,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:33:04,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141720430] [2023-12-19 00:33:04,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141720430] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:33:04,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:33:04,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:33:04,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567629800] [2023-12-19 00:33:04,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:33:04,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 00:33:04,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:33:04,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 00:33:04,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:33:04,975 INFO L87 Difference]: Start difference. First operand 1347 states and 2319 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:33:05,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:33:05,014 INFO L93 Difference]: Finished difference Result 2399 states and 3897 transitions. [2023-12-19 00:33:05,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 00:33:05,014 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2023-12-19 00:33:05,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:33:05,021 INFO L225 Difference]: With dead ends: 2399 [2023-12-19 00:33:05,021 INFO L226 Difference]: Without dead ends: 1841 [2023-12-19 00:33:05,022 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 00:33:05,023 INFO L413 NwaCegarLoop]: 1581 mSDtfsCounter, 1491 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1491 SdHoareTripleChecker+Valid, 1662 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 00:33:05,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1491 Valid, 1662 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:33:05,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1841 states. [2023-12-19 00:33:05,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1841 to 1839. [2023-12-19 00:33:05,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1839 states, 1837 states have (on average 1.6521502449646162) internal successors, (3035), 1838 states have internal predecessors, (3035), 0 states have call successors, (0), 0 states 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 00:33:05,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1839 states to 1839 states and 3035 transitions. [2023-12-19 00:33:05,065 INFO L78 Accepts]: Start accepts. Automaton has 1839 states and 3035 transitions. Word has length 55 [2023-12-19 00:33:05,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:33:05,065 INFO L495 AbstractCegarLoop]: Abstraction has 1839 states and 3035 transitions. [2023-12-19 00:33:05,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:33:05,066 INFO L276 IsEmpty]: Start isEmpty. Operand 1839 states and 3035 transitions. [2023-12-19 00:33:05,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-19 00:33:05,066 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:33:05,066 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:33:05,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-19 00:33:05,067 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:33:05,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:33:05,067 INFO L85 PathProgramCache]: Analyzing trace with hash -2068834231, now seen corresponding path program 1 times [2023-12-19 00:33:05,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:33:05,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805439886] [2023-12-19 00:33:05,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:33:05,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:33:05,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:33:05,148 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 00:33:05,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:33:05,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805439886] [2023-12-19 00:33:05,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805439886] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:33:05,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:33:05,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:33:05,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76369133] [2023-12-19 00:33:05,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:33:05,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 00:33:05,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:33:05,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 00:33:05,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:33:05,149 INFO L87 Difference]: Start difference. First operand 1839 states and 3035 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:33:05,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:33:05,189 INFO L93 Difference]: Finished difference Result 3811 states and 5933 transitions. [2023-12-19 00:33:05,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 00:33:05,190 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2023-12-19 00:33:05,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:33:05,199 INFO L225 Difference]: With dead ends: 3811 [2023-12-19 00:33:05,199 INFO L226 Difference]: Without dead ends: 2761 [2023-12-19 00:33:05,201 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 00:33:05,201 INFO L413 NwaCegarLoop]: 1579 mSDtfsCounter, 1489 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1489 SdHoareTripleChecker+Valid, 1664 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 00:33:05,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1489 Valid, 1664 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:33:05,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2761 states. [2023-12-19 00:33:05,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2761 to 2759. [2023-12-19 00:33:05,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2759 states, 2757 states have (on average 1.5738121146173376) internal successors, (4339), 2758 states have internal predecessors, (4339), 0 states have call successors, (0), 0 states 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 00:33:05,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2759 states to 2759 states and 4339 transitions. [2023-12-19 00:33:05,266 INFO L78 Accepts]: Start accepts. Automaton has 2759 states and 4339 transitions. Word has length 55 [2023-12-19 00:33:05,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:33:05,266 INFO L495 AbstractCegarLoop]: Abstraction has 2759 states and 4339 transitions. [2023-12-19 00:33:05,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:33:05,267 INFO L276 IsEmpty]: Start isEmpty. Operand 2759 states and 4339 transitions. [2023-12-19 00:33:05,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-19 00:33:05,267 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:33:05,267 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] [2023-12-19 00:33:05,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-19 00:33:05,267 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:33:05,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:33:05,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1474849938, now seen corresponding path program 1 times [2023-12-19 00:33:05,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:33:05,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172315128] [2023-12-19 00:33:05,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:33:05,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:33:05,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:33:05,307 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 00:33:05,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:33:05,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172315128] [2023-12-19 00:33:05,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172315128] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:33:05,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:33:05,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:33:05,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176008933] [2023-12-19 00:33:05,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:33:05,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 00:33:05,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:33:05,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 00:33:05,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:33:05,309 INFO L87 Difference]: Start difference. First operand 2759 states and 4339 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states 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 00:33:05,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:33:05,364 INFO L93 Difference]: Finished difference Result 4814 states and 7385 transitions. [2023-12-19 00:33:05,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 00:33:05,365 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 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 57 [2023-12-19 00:33:05,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:33:05,377 INFO L225 Difference]: With dead ends: 4814 [2023-12-19 00:33:05,377 INFO L226 Difference]: Without dead ends: 3691 [2023-12-19 00:33:05,379 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 00:33:05,379 INFO L413 NwaCegarLoop]: 1590 mSDtfsCounter, 1494 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1494 SdHoareTripleChecker+Valid, 1659 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 00:33:05,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1494 Valid, 1659 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:33:05,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3691 states. [2023-12-19 00:33:05,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3691 to 3689. [2023-12-19 00:33:05,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3689 states, 3687 states have (on average 1.537564415513968) internal successors, (5669), 3688 states have internal predecessors, (5669), 0 states have call successors, (0), 0 states 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 00:33:05,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3689 states to 3689 states and 5669 transitions. [2023-12-19 00:33:05,457 INFO L78 Accepts]: Start accepts. Automaton has 3689 states and 5669 transitions. Word has length 57 [2023-12-19 00:33:05,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:33:05,457 INFO L495 AbstractCegarLoop]: Abstraction has 3689 states and 5669 transitions. [2023-12-19 00:33:05,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states 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 00:33:05,458 INFO L276 IsEmpty]: Start isEmpty. Operand 3689 states and 5669 transitions. [2023-12-19 00:33:05,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-19 00:33:05,458 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:33:05,458 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] [2023-12-19 00:33:05,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-19 00:33:05,458 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:33:05,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:33:05,459 INFO L85 PathProgramCache]: Analyzing trace with hash -1139867461, now seen corresponding path program 1 times [2023-12-19 00:33:05,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:33:05,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959168404] [2023-12-19 00:33:05,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:33:05,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:33:05,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:33:05,537 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 00:33:05,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:33:05,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959168404] [2023-12-19 00:33:05,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959168404] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:33:05,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:33:05,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:33:05,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107152674] [2023-12-19 00:33:05,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:33:05,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 00:33:05,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:33:05,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 00:33:05,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 00:33:05,539 INFO L87 Difference]: Start difference. First operand 3689 states and 5669 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states 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 00:33:10,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:33:10,657 INFO L93 Difference]: Finished difference Result 5944 states and 9978 transitions. [2023-12-19 00:33:10,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 00:33:10,661 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 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 59 [2023-12-19 00:33:10,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:33:10,692 INFO L225 Difference]: With dead ends: 5944 [2023-12-19 00:33:10,692 INFO L226 Difference]: Without dead ends: 5191 [2023-12-19 00:33:10,694 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 00:33:10,694 INFO L413 NwaCegarLoop]: 794 mSDtfsCounter, 2390 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5521 mSolverCounterSat, 1100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2390 SdHoareTripleChecker+Valid, 812 SdHoareTripleChecker+Invalid, 6621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1100 IncrementalHoareTripleChecker+Valid, 5521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2023-12-19 00:33:10,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2390 Valid, 812 Invalid, 6621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1100 Valid, 5521 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2023-12-19 00:33:10,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5191 states. [2023-12-19 00:33:10,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5191 to 5191. [2023-12-19 00:33:10,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5191 states, 5189 states have (on average 1.5022162266332626) internal successors, (7795), 5190 states have internal predecessors, (7795), 0 states have call successors, (0), 0 states 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 00:33:10,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5191 states to 5191 states and 7795 transitions. [2023-12-19 00:33:10,887 INFO L78 Accepts]: Start accepts. Automaton has 5191 states and 7795 transitions. Word has length 59 [2023-12-19 00:33:10,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:33:10,887 INFO L495 AbstractCegarLoop]: Abstraction has 5191 states and 7795 transitions. [2023-12-19 00:33:10,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states 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 00:33:10,888 INFO L276 IsEmpty]: Start isEmpty. Operand 5191 states and 7795 transitions. [2023-12-19 00:33:10,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-19 00:33:10,889 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:33:10,889 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] [2023-12-19 00:33:10,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-19 00:33:10,890 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:33:10,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:33:10,890 INFO L85 PathProgramCache]: Analyzing trace with hash -1189463765, now seen corresponding path program 1 times [2023-12-19 00:33:10,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:33:10,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19311647] [2023-12-19 00:33:10,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:33:10,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:33:10,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:33:10,994 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 00:33:10,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:33:10,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19311647] [2023-12-19 00:33:10,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19311647] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:33:10,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:33:10,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 00:33:10,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760692645] [2023-12-19 00:33:10,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:33:10,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 00:33:10,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:33:10,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 00:33:10,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-19 00:33:10,996 INFO L87 Difference]: Start difference. First operand 5191 states and 7795 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 00:33:11,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:33:11,370 INFO L93 Difference]: Finished difference Result 20291 states and 29609 transitions. [2023-12-19 00:33:11,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 00:33:11,370 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 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 73 [2023-12-19 00:33:11,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:33:11,412 INFO L225 Difference]: With dead ends: 20291 [2023-12-19 00:33:11,412 INFO L226 Difference]: Without dead ends: 17393 [2023-12-19 00:33:11,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-19 00:33:11,421 INFO L413 NwaCegarLoop]: 1605 mSDtfsCounter, 6314 mSDsluCounter, 2028 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6314 SdHoareTripleChecker+Valid, 3633 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 00:33:11,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6314 Valid, 3633 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 00:33:11,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17393 states. [2023-12-19 00:33:11,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17393 to 8087. [2023-12-19 00:33:11,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8087 states, 8085 states have (on average 1.4766852195423623) internal successors, (11939), 8086 states have internal predecessors, (11939), 0 states have call successors, (0), 0 states 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 00:33:11,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8087 states to 8087 states and 11939 transitions. [2023-12-19 00:33:11,667 INFO L78 Accepts]: Start accepts. Automaton has 8087 states and 11939 transitions. Word has length 73 [2023-12-19 00:33:11,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:33:11,667 INFO L495 AbstractCegarLoop]: Abstraction has 8087 states and 11939 transitions. [2023-12-19 00:33:11,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 00:33:11,667 INFO L276 IsEmpty]: Start isEmpty. Operand 8087 states and 11939 transitions. [2023-12-19 00:33:11,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-19 00:33:11,669 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:33:11,669 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] [2023-12-19 00:33:11,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-19 00:33:11,669 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:33:11,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:33:11,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1149519829, now seen corresponding path program 1 times [2023-12-19 00:33:11,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:33:11,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044047242] [2023-12-19 00:33:11,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:33:11,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:33:11,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:33:11,835 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-19 00:33:11,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:33:11,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044047242] [2023-12-19 00:33:11,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044047242] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:33:11,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:33:11,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 00:33:11,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003984688] [2023-12-19 00:33:11,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:33:11,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 00:33:11,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:33:11,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 00:33:11,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-19 00:33:11,837 INFO L87 Difference]: Start difference. First operand 8087 states and 11939 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states 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 00:33:12,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:33:12,252 INFO L93 Difference]: Finished difference Result 23187 states and 33753 transitions. [2023-12-19 00:33:12,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 00:33:12,253 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 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 73 [2023-12-19 00:33:12,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:33:12,280 INFO L225 Difference]: With dead ends: 23187 [2023-12-19 00:33:12,280 INFO L226 Difference]: Without dead ends: 20289 [2023-12-19 00:33:12,288 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-19 00:33:12,289 INFO L413 NwaCegarLoop]: 1602 mSDtfsCounter, 6338 mSDsluCounter, 1955 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6338 SdHoareTripleChecker+Valid, 3557 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 00:33:12,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6338 Valid, 3557 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 00:33:12,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20289 states. [2023-12-19 00:33:12,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20289 to 12439. [2023-12-19 00:33:12,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12439 states, 12437 states have (on average 1.4565409664710138) internal successors, (18115), 12438 states have internal predecessors, (18115), 0 states have call successors, (0), 0 states 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 00:33:12,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12439 states to 12439 states and 18115 transitions. [2023-12-19 00:33:12,598 INFO L78 Accepts]: Start accepts. Automaton has 12439 states and 18115 transitions. Word has length 73 [2023-12-19 00:33:12,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:33:12,598 INFO L495 AbstractCegarLoop]: Abstraction has 12439 states and 18115 transitions. [2023-12-19 00:33:12,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states 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 00:33:12,599 INFO L276 IsEmpty]: Start isEmpty. Operand 12439 states and 18115 transitions. [2023-12-19 00:33:12,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-19 00:33:12,600 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:33:12,600 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] [2023-12-19 00:33:12,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-19 00:33:12,600 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:33:12,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:33:12,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1775175893, now seen corresponding path program 1 times [2023-12-19 00:33:12,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:33:12,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546245672] [2023-12-19 00:33:12,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:33:12,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:33:12,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:33:12,703 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-19 00:33:12,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:33:12,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546245672] [2023-12-19 00:33:12,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546245672] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:33:12,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:33:12,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 00:33:12,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109616969] [2023-12-19 00:33:12,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:33:12,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 00:33:12,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:33:12,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 00:33:12,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-19 00:33:12,705 INFO L87 Difference]: Start difference. First operand 12439 states and 18115 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states 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 00:33:13,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:33:13,192 INFO L93 Difference]: Finished difference Result 26083 states and 37897 transitions. [2023-12-19 00:33:13,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 00:33:13,193 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 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 73 [2023-12-19 00:33:13,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:33:13,220 INFO L225 Difference]: With dead ends: 26083 [2023-12-19 00:33:13,221 INFO L226 Difference]: Without dead ends: 23185 [2023-12-19 00:33:13,228 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-19 00:33:13,229 INFO L413 NwaCegarLoop]: 1599 mSDtfsCounter, 6382 mSDsluCounter, 1921 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6382 SdHoareTripleChecker+Valid, 3520 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 00:33:13,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6382 Valid, 3520 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 00:33:13,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23185 states. [2023-12-19 00:33:13,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23185 to 15335. [2023-12-19 00:33:13,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15335 states, 15333 states have (on average 1.451705471858084) internal successors, (22259), 15334 states have internal predecessors, (22259), 0 states have call successors, (0), 0 states 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 00:33:13,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15335 states to 15335 states and 22259 transitions. [2023-12-19 00:33:13,577 INFO L78 Accepts]: Start accepts. Automaton has 15335 states and 22259 transitions. Word has length 73 [2023-12-19 00:33:13,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:33:13,577 INFO L495 AbstractCegarLoop]: Abstraction has 15335 states and 22259 transitions. [2023-12-19 00:33:13,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states 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 00:33:13,578 INFO L276 IsEmpty]: Start isEmpty. Operand 15335 states and 22259 transitions. [2023-12-19 00:33:13,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-19 00:33:13,579 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:33:13,579 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] [2023-12-19 00:33:13,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-19 00:33:13,579 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:33:13,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:33:13,579 INFO L85 PathProgramCache]: Analyzing trace with hash -886442453, now seen corresponding path program 1 times [2023-12-19 00:33:13,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:33:13,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827765180] [2023-12-19 00:33:13,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:33:13,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:33:13,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:33:13,669 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-19 00:33:13,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:33:13,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827765180] [2023-12-19 00:33:13,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827765180] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:33:13,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:33:13,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 00:33:13,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706511897] [2023-12-19 00:33:13,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:33:13,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 00:33:13,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:33:13,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 00:33:13,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-19 00:33:13,672 INFO L87 Difference]: Start difference. First operand 15335 states and 22259 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states 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 00:33:14,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:33:14,180 INFO L93 Difference]: Finished difference Result 28979 states and 42041 transitions. [2023-12-19 00:33:14,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 00:33:14,181 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 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 73 [2023-12-19 00:33:14,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:33:14,215 INFO L225 Difference]: With dead ends: 28979 [2023-12-19 00:33:14,215 INFO L226 Difference]: Without dead ends: 26081 [2023-12-19 00:33:14,222 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-19 00:33:14,222 INFO L413 NwaCegarLoop]: 1603 mSDtfsCounter, 6329 mSDsluCounter, 1983 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6329 SdHoareTripleChecker+Valid, 3586 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 00:33:14,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6329 Valid, 3586 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 00:33:14,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26081 states. [2023-12-19 00:33:14,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26081 to 18231. [2023-12-19 00:33:14,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18231 states, 18229 states have (on average 1.4484063854298097) internal successors, (26403), 18230 states have internal predecessors, (26403), 0 states have call successors, (0), 0 states 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 00:33:14,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18231 states to 18231 states and 26403 transitions. [2023-12-19 00:33:14,617 INFO L78 Accepts]: Start accepts. Automaton has 18231 states and 26403 transitions. Word has length 73 [2023-12-19 00:33:14,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:33:14,618 INFO L495 AbstractCegarLoop]: Abstraction has 18231 states and 26403 transitions. [2023-12-19 00:33:14,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states 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 00:33:14,618 INFO L276 IsEmpty]: Start isEmpty. Operand 18231 states and 26403 transitions. [2023-12-19 00:33:14,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-19 00:33:14,619 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:33:14,620 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 00:33:14,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-19 00:33:14,620 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:33:14,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:33:14,620 INFO L85 PathProgramCache]: Analyzing trace with hash -756982061, now seen corresponding path program 1 times [2023-12-19 00:33:14,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:33:14,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973154613] [2023-12-19 00:33:14,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:33:14,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:33:14,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:33:14,695 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:33:14,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:33:14,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973154613] [2023-12-19 00:33:14,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973154613] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:33:14,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:33:14,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:33:14,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777746653] [2023-12-19 00:33:14,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:33:14,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 00:33:14,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:33:14,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 00:33:14,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:33:14,697 INFO L87 Difference]: Start difference. First operand 18231 states and 26403 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states 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 00:33:14,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:33:14,983 INFO L93 Difference]: Finished difference Result 29518 states and 42793 transitions. [2023-12-19 00:33:14,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 00:33:14,984 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 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 75 [2023-12-19 00:33:14,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:33:15,003 INFO L225 Difference]: With dead ends: 29518 [2023-12-19 00:33:15,005 INFO L226 Difference]: Without dead ends: 13580 [2023-12-19 00:33:15,018 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 00:33:15,018 INFO L413 NwaCegarLoop]: 1580 mSDtfsCounter, 50 mSDsluCounter, 1526 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 3106 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 00:33:15,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 3106 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:33:15,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13580 states. [2023-12-19 00:33:15,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13580 to 13578. [2023-12-19 00:33:15,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13578 states, 13576 states have (on average 1.4594873305833824) internal successors, (19814), 13577 states have internal predecessors, (19814), 0 states have call successors, (0), 0 states 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 00:33:15,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13578 states to 13578 states and 19814 transitions. [2023-12-19 00:33:15,354 INFO L78 Accepts]: Start accepts. Automaton has 13578 states and 19814 transitions. Word has length 75 [2023-12-19 00:33:15,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:33:15,354 INFO L495 AbstractCegarLoop]: Abstraction has 13578 states and 19814 transitions. [2023-12-19 00:33:15,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states 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 00:33:15,354 INFO L276 IsEmpty]: Start isEmpty. Operand 13578 states and 19814 transitions. [2023-12-19 00:33:15,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-19 00:33:15,355 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:33:15,355 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] [2023-12-19 00:33:15,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-19 00:33:15,355 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:33:15,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:33:15,361 INFO L85 PathProgramCache]: Analyzing trace with hash 932282576, now seen corresponding path program 1 times [2023-12-19 00:33:15,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:33:15,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153041683] [2023-12-19 00:33:15,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:33:15,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:33:15,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:33:15,459 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 00:33:15,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:33:15,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153041683] [2023-12-19 00:33:15,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153041683] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:33:15,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:33:15,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 00:33:15,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125196320] [2023-12-19 00:33:15,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:33:15,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 00:33:15,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:33:15,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 00:33:15,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-19 00:33:15,461 INFO L87 Difference]: Start difference. First operand 13578 states and 19814 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states 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 00:33:15,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:33:15,850 INFO L93 Difference]: Finished difference Result 23830 states and 34700 transitions. [2023-12-19 00:33:15,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 00:33:15,850 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 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 75 [2023-12-19 00:33:15,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:33:15,874 INFO L225 Difference]: With dead ends: 23830 [2023-12-19 00:33:15,874 INFO L226 Difference]: Without dead ends: 21780 [2023-12-19 00:33:15,880 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-19 00:33:15,881 INFO L413 NwaCegarLoop]: 1597 mSDtfsCounter, 6321 mSDsluCounter, 2095 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6321 SdHoareTripleChecker+Valid, 3692 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 00:33:15,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6321 Valid, 3692 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 00:33:15,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21780 states. [2023-12-19 00:33:16,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21780 to 15626. [2023-12-19 00:33:16,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15626 states, 15624 states have (on average 1.456605222734255) internal successors, (22758), 15625 states have internal predecessors, (22758), 0 states have call successors, (0), 0 states 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 00:33:16,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15626 states to 15626 states and 22758 transitions. [2023-12-19 00:33:16,316 INFO L78 Accepts]: Start accepts. Automaton has 15626 states and 22758 transitions. Word has length 75 [2023-12-19 00:33:16,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:33:16,316 INFO L495 AbstractCegarLoop]: Abstraction has 15626 states and 22758 transitions. [2023-12-19 00:33:16,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states 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 00:33:16,316 INFO L276 IsEmpty]: Start isEmpty. Operand 15626 states and 22758 transitions. [2023-12-19 00:33:16,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-19 00:33:16,319 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:33:16,319 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:33:16,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-19 00:33:16,319 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:33:16,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:33:16,320 INFO L85 PathProgramCache]: Analyzing trace with hash -28105, now seen corresponding path program 1 times [2023-12-19 00:33:16,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:33:16,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321469093] [2023-12-19 00:33:16,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:33:16,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:33:16,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:33:16,379 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:33:16,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:33:16,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321469093] [2023-12-19 00:33:16,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321469093] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:33:16,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:33:16,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:33:16,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38148068] [2023-12-19 00:33:16,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:33:16,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 00:33:16,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:33:16,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 00:33:16,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:33:16,381 INFO L87 Difference]: Start difference. First operand 15626 states and 22758 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:33:16,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:33:16,512 INFO L93 Difference]: Finished difference Result 22286 states and 32328 transitions. [2023-12-19 00:33:16,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 00:33:16,512 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2023-12-19 00:33:16,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:33:16,520 INFO L225 Difference]: With dead ends: 22286 [2023-12-19 00:33:16,520 INFO L226 Difference]: Without dead ends: 8972 [2023-12-19 00:33:16,531 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 00:33:16,531 INFO L413 NwaCegarLoop]: 1573 mSDtfsCounter, 45 mSDsluCounter, 1518 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 3091 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 00:33:16,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 3091 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:33:16,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8972 states. [2023-12-19 00:33:16,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8972 to 8970. [2023-12-19 00:33:16,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8970 states, 8968 states have (on average 1.4591882247992864) internal successors, (13086), 8969 states have internal predecessors, (13086), 0 states have call successors, (0), 0 states 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 00:33:16,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8970 states to 8970 states and 13086 transitions. [2023-12-19 00:33:16,689 INFO L78 Accepts]: Start accepts. Automaton has 8970 states and 13086 transitions. Word has length 76 [2023-12-19 00:33:16,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:33:16,689 INFO L495 AbstractCegarLoop]: Abstraction has 8970 states and 13086 transitions. [2023-12-19 00:33:16,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:33:16,689 INFO L276 IsEmpty]: Start isEmpty. Operand 8970 states and 13086 transitions. [2023-12-19 00:33:16,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-19 00:33:16,690 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:33:16,690 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] [2023-12-19 00:33:16,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-19 00:33:16,690 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:33:16,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:33:16,691 INFO L85 PathProgramCache]: Analyzing trace with hash 191051813, now seen corresponding path program 1 times [2023-12-19 00:33:16,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:33:16,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909229973] [2023-12-19 00:33:16,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:33:16,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:33:16,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:33:16,747 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:33:16,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:33:16,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909229973] [2023-12-19 00:33:16,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909229973] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:33:16,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:33:16,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:33:16,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035669105] [2023-12-19 00:33:16,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:33:16,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 00:33:16,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:33:16,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 00:33:16,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:33:16,749 INFO L87 Difference]: Start difference. First operand 8970 states and 13086 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:33:16,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:33:16,825 INFO L93 Difference]: Finished difference Result 12302 states and 17820 transitions. [2023-12-19 00:33:16,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 00:33:16,826 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2023-12-19 00:33:16,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:33:16,831 INFO L225 Difference]: With dead ends: 12302 [2023-12-19 00:33:16,831 INFO L226 Difference]: Without dead ends: 5644 [2023-12-19 00:33:16,836 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 00:33:16,836 INFO L413 NwaCegarLoop]: 1566 mSDtfsCounter, 42 mSDsluCounter, 1510 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 3076 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 00:33:16,836 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 3076 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:33:16,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5644 states. [2023-12-19 00:33:16,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5644 to 5642. [2023-12-19 00:33:16,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5642 states, 5640 states have (on average 1.471985815602837) internal successors, (8302), 5641 states have internal predecessors, (8302), 0 states have call successors, (0), 0 states 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 00:33:16,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5642 states to 5642 states and 8302 transitions. [2023-12-19 00:33:16,925 INFO L78 Accepts]: Start accepts. Automaton has 5642 states and 8302 transitions. Word has length 78 [2023-12-19 00:33:16,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:33:16,925 INFO L495 AbstractCegarLoop]: Abstraction has 5642 states and 8302 transitions. [2023-12-19 00:33:16,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:33:16,925 INFO L276 IsEmpty]: Start isEmpty. Operand 5642 states and 8302 transitions. [2023-12-19 00:33:16,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-19 00:33:16,926 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:33:16,926 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] [2023-12-19 00:33:16,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-19 00:33:16,927 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:33:16,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:33:16,927 INFO L85 PathProgramCache]: Analyzing trace with hash -100483181, now seen corresponding path program 1 times [2023-12-19 00:33:16,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:33:16,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578865669] [2023-12-19 00:33:16,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:33:16,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:33:16,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:33:17,006 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:33:17,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:33:17,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578865669] [2023-12-19 00:33:17,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578865669] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:33:17,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:33:17,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:33:17,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29411905] [2023-12-19 00:33:17,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:33:17,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 00:33:17,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:33:17,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 00:33:17,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:33:17,008 INFO L87 Difference]: Start difference. First operand 5642 states and 8302 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:33:17,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:33:17,054 INFO L93 Difference]: Finished difference Result 7310 states and 10644 transitions. [2023-12-19 00:33:17,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 00:33:17,054 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2023-12-19 00:33:17,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:33:17,057 INFO L225 Difference]: With dead ends: 7310 [2023-12-19 00:33:17,057 INFO L226 Difference]: Without dead ends: 3980 [2023-12-19 00:33:17,059 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 00:33:17,060 INFO L413 NwaCegarLoop]: 1559 mSDtfsCounter, 39 mSDsluCounter, 1502 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 3061 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 00:33:17,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 3061 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:33:17,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3980 states. [2023-12-19 00:33:17,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3980 to 3978. [2023-12-19 00:33:17,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3978 states, 3976 states have (on average 1.4929577464788732) internal successors, (5936), 3977 states have internal predecessors, (5936), 0 states have call successors, (0), 0 states 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 00:33:17,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3978 states to 3978 states and 5936 transitions. [2023-12-19 00:33:17,119 INFO L78 Accepts]: Start accepts. Automaton has 3978 states and 5936 transitions. Word has length 80 [2023-12-19 00:33:17,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:33:17,119 INFO L495 AbstractCegarLoop]: Abstraction has 3978 states and 5936 transitions. [2023-12-19 00:33:17,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:33:17,120 INFO L276 IsEmpty]: Start isEmpty. Operand 3978 states and 5936 transitions. [2023-12-19 00:33:17,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-19 00:33:17,120 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:33:17,120 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:33:17,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-19 00:33:17,121 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:33:17,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:33:17,121 INFO L85 PathProgramCache]: Analyzing trace with hash -846133119, now seen corresponding path program 1 times [2023-12-19 00:33:17,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:33:17,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164755489] [2023-12-19 00:33:17,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:33:17,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:33:17,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:33:17,175 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:33:17,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:33:17,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164755489] [2023-12-19 00:33:17,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164755489] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:33:17,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:33:17,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:33:17,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591518539] [2023-12-19 00:33:17,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:33:17,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 00:33:17,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:33:17,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 00:33:17,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:33:17,176 INFO L87 Difference]: Start difference. First operand 3978 states and 5936 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states 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 00:33:17,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:33:17,213 INFO L93 Difference]: Finished difference Result 4814 states and 7095 transitions. [2023-12-19 00:33:17,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 00:33:17,213 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2023-12-19 00:33:17,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:33:17,216 INFO L225 Difference]: With dead ends: 4814 [2023-12-19 00:33:17,216 INFO L226 Difference]: Without dead ends: 3148 [2023-12-19 00:33:17,218 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 00:33:17,219 INFO L413 NwaCegarLoop]: 1552 mSDtfsCounter, 36 mSDsluCounter, 1494 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 3046 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 00:33:17,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 3046 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:33:17,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3148 states. [2023-12-19 00:33:17,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3148 to 3146. [2023-12-19 00:33:17,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3146 states, 3144 states have (on average 1.5159033078880406) internal successors, (4766), 3145 states have internal predecessors, (4766), 0 states have call successors, (0), 0 states 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 00:33:17,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3146 states to 3146 states and 4766 transitions. [2023-12-19 00:33:17,253 INFO L78 Accepts]: Start accepts. Automaton has 3146 states and 4766 transitions. Word has length 82 [2023-12-19 00:33:17,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:33:17,254 INFO L495 AbstractCegarLoop]: Abstraction has 3146 states and 4766 transitions. [2023-12-19 00:33:17,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states 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 00:33:17,254 INFO L276 IsEmpty]: Start isEmpty. Operand 3146 states and 4766 transitions. [2023-12-19 00:33:17,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-12-19 00:33:17,254 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:33:17,254 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:33:17,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-19 00:33:17,255 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:33:17,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:33:17,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1859711727, now seen corresponding path program 1 times [2023-12-19 00:33:17,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:33:17,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815000952] [2023-12-19 00:33:17,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:33:17,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:33:17,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:33:17,858 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:33:17,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:33:17,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815000952] [2023-12-19 00:33:17,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815000952] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:33:17,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [587134205] [2023-12-19 00:33:17,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:33:17,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:33:17,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:33:17,876 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 00:33:17,918 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 00:33:18,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:33:18,013 INFO L262 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-19 00:33:18,018 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:33:18,171 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 00:33:18,171 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:33:18,315 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 00:33:18,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [587134205] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:33:18,315 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:33:18,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 4] total 18 [2023-12-19 00:33:18,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226262575] [2023-12-19 00:33:18,316 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:33:18,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-19 00:33:18,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:33:18,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-19 00:33:18,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2023-12-19 00:33:18,318 INFO L87 Difference]: Start difference. First operand 3146 states and 4766 transitions. Second operand has 18 states, 18 states have (on average 13.222222222222221) internal successors, (238), 18 states have internal predecessors, (238), 0 states have call successors, (0), 0 states 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 00:33:20,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:33:20,197 INFO L93 Difference]: Finished difference Result 9609 states and 13438 transitions. [2023-12-19 00:33:20,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-12-19 00:33:20,197 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 13.222222222222221) internal successors, (238), 18 states have internal predecessors, (238), 0 states have call successors, (0), 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 84 [2023-12-19 00:33:20,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:33:20,205 INFO L225 Difference]: With dead ends: 9609 [2023-12-19 00:33:20,205 INFO L226 Difference]: Without dead ends: 8775 [2023-12-19 00:33:20,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1191 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=747, Invalid=3285, Unknown=0, NotChecked=0, Total=4032 [2023-12-19 00:33:20,211 INFO L413 NwaCegarLoop]: 1514 mSDtfsCounter, 11949 mSDsluCounter, 6370 mSDsCounter, 0 mSdLazyCounter, 859 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11949 SdHoareTripleChecker+Valid, 7884 SdHoareTripleChecker+Invalid, 910 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 00:33:20,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11949 Valid, 7884 Invalid, 910 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 859 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 00:33:20,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8775 states. [2023-12-19 00:33:20,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8775 to 8479. [2023-12-19 00:33:20,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8479 states, 8477 states have (on average 1.371357791671582) internal successors, (11625), 8478 states have internal predecessors, (11625), 0 states have call successors, (0), 0 states 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 00:33:20,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8479 states to 8479 states and 11625 transitions. [2023-12-19 00:33:20,377 INFO L78 Accepts]: Start accepts. Automaton has 8479 states and 11625 transitions. Word has length 84 [2023-12-19 00:33:20,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:33:20,377 INFO L495 AbstractCegarLoop]: Abstraction has 8479 states and 11625 transitions. [2023-12-19 00:33:20,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 13.222222222222221) internal successors, (238), 18 states have internal predecessors, (238), 0 states have call successors, (0), 0 states 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 00:33:20,378 INFO L276 IsEmpty]: Start isEmpty. Operand 8479 states and 11625 transitions. [2023-12-19 00:33:20,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-12-19 00:33:20,378 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:33:20,379 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:33:20,397 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 00:33:20,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-12-19 00:33:20,584 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:33:20,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:33:20,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1178350976, now seen corresponding path program 1 times [2023-12-19 00:33:20,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:33:20,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486277670] [2023-12-19 00:33:20,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:33:20,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:33:20,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:33:20,865 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:33:20,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:33:20,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486277670] [2023-12-19 00:33:20,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486277670] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:33:20,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1904824261] [2023-12-19 00:33:20,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:33:20,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:33:20,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:33:20,867 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 00:33:20,912 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 00:33:21,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:33:21,005 INFO L262 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-19 00:33:21,008 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:33:21,345 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:33:21,345 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:33:21,978 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:33:21,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1904824261] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:33:21,978 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:33:21,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2023-12-19 00:33:21,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175855789] [2023-12-19 00:33:21,979 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:33:21,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-19 00:33:21,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:33:21,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-19 00:33:21,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=521, Unknown=0, NotChecked=0, Total=600 [2023-12-19 00:33:21,980 INFO L87 Difference]: Start difference. First operand 8479 states and 11625 transitions. Second operand has 25 states, 25 states have (on average 8.4) internal successors, (210), 24 states have internal predecessors, (210), 0 states have call successors, (0), 0 states 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 00:33:24,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:33:24,012 INFO L93 Difference]: Finished difference Result 31857 states and 41855 transitions. [2023-12-19 00:33:24,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-19 00:33:24,012 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 8.4) internal successors, (210), 24 states have internal predecessors, (210), 0 states have call successors, (0), 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 85 [2023-12-19 00:33:24,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:33:24,034 INFO L225 Difference]: With dead ends: 31857 [2023-12-19 00:33:24,034 INFO L226 Difference]: Without dead ends: 25732 [2023-12-19 00:33:24,039 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 583 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=670, Invalid=2410, Unknown=0, NotChecked=0, Total=3080 [2023-12-19 00:33:24,040 INFO L413 NwaCegarLoop]: 1535 mSDtfsCounter, 25220 mSDsluCounter, 5093 mSDsCounter, 0 mSdLazyCounter, 737 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25220 SdHoareTripleChecker+Valid, 6628 SdHoareTripleChecker+Invalid, 770 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 737 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 00:33:24,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25220 Valid, 6628 Invalid, 770 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 737 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 00:33:24,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25732 states. [2023-12-19 00:33:24,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25732 to 24650. [2023-12-19 00:33:24,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24650 states, 24648 states have (on average 1.3008763388510225) internal successors, (32064), 24649 states have internal predecessors, (32064), 0 states have call successors, (0), 0 states 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 00:33:24,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24650 states to 24650 states and 32064 transitions. [2023-12-19 00:33:24,768 INFO L78 Accepts]: Start accepts. Automaton has 24650 states and 32064 transitions. Word has length 85 [2023-12-19 00:33:24,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:33:24,768 INFO L495 AbstractCegarLoop]: Abstraction has 24650 states and 32064 transitions. [2023-12-19 00:33:24,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 8.4) internal successors, (210), 24 states have internal predecessors, (210), 0 states have call successors, (0), 0 states 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 00:33:24,768 INFO L276 IsEmpty]: Start isEmpty. Operand 24650 states and 32064 transitions. [2023-12-19 00:33:24,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-12-19 00:33:24,769 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:33:24,770 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:33:24,775 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 00:33:24,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-12-19 00:33:24,975 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:33:24,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:33:24,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1351979570, now seen corresponding path program 1 times [2023-12-19 00:33:24,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:33:24,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580624555] [2023-12-19 00:33:24,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:33:24,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:33:24,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:33:25,350 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:33:25,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:33:25,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580624555] [2023-12-19 00:33:25,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580624555] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:33:25,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1659798761] [2023-12-19 00:33:25,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:33:25,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:33:25,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:33:25,352 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 00:33:25,378 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 00:33:25,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:33:25,448 INFO L262 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-19 00:33:25,450 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:33:26,206 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:33:26,207 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:33:27,061 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:33:27,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1659798761] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:33:27,061 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:33:27,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 30 [2023-12-19 00:33:27,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456894861] [2023-12-19 00:33:27,062 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:33:27,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-19 00:33:27,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:33:27,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-19 00:33:27,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=778, Unknown=0, NotChecked=0, Total=870 [2023-12-19 00:33:27,063 INFO L87 Difference]: Start difference. First operand 24650 states and 32064 transitions. Second operand has 30 states, 30 states have (on average 7.466666666666667) internal successors, (224), 30 states have internal predecessors, (224), 0 states have call successors, (0), 0 states 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 00:33:30,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:33:30,715 INFO L93 Difference]: Finished difference Result 63494 states and 81105 transitions. [2023-12-19 00:33:30,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-12-19 00:33:30,716 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 7.466666666666667) internal successors, (224), 30 states have internal predecessors, (224), 0 states have call successors, (0), 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 85 [2023-12-19 00:33:30,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:33:30,756 INFO L225 Difference]: With dead ends: 63494 [2023-12-19 00:33:30,756 INFO L226 Difference]: Without dead ends: 44246 [2023-12-19 00:33:30,766 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1186 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1140, Invalid=4262, Unknown=0, NotChecked=0, Total=5402 [2023-12-19 00:33:30,766 INFO L413 NwaCegarLoop]: 1519 mSDtfsCounter, 19085 mSDsluCounter, 18446 mSDsCounter, 0 mSdLazyCounter, 1062 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19085 SdHoareTripleChecker+Valid, 19965 SdHoareTripleChecker+Invalid, 1112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1062 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 00:33:30,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19085 Valid, 19965 Invalid, 1112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1062 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 00:33:30,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44246 states. [2023-12-19 00:33:32,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44246 to 43124. [2023-12-19 00:33:32,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43124 states, 43122 states have (on average 1.2688187004313343) internal successors, (54714), 43123 states have internal predecessors, (54714), 0 states have call successors, (0), 0 states 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 00:33:32,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43124 states to 43124 states and 54714 transitions. [2023-12-19 00:33:32,199 INFO L78 Accepts]: Start accepts. Automaton has 43124 states and 54714 transitions. Word has length 85 [2023-12-19 00:33:32,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:33:32,199 INFO L495 AbstractCegarLoop]: Abstraction has 43124 states and 54714 transitions. [2023-12-19 00:33:32,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 7.466666666666667) internal successors, (224), 30 states have internal predecessors, (224), 0 states have call successors, (0), 0 states 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 00:33:32,200 INFO L276 IsEmpty]: Start isEmpty. Operand 43124 states and 54714 transitions. [2023-12-19 00:33:32,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-19 00:33:32,205 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:33:32,206 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:33:32,211 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-19 00:33:32,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:33:32,412 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:33:32,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:33:32,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1717170707, now seen corresponding path program 1 times [2023-12-19 00:33:32,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:33:32,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595657867] [2023-12-19 00:33:32,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:33:32,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:33:32,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:33:32,654 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:33:32,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:33:32,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595657867] [2023-12-19 00:33:32,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595657867] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:33:32,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1006782972] [2023-12-19 00:33:32,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:33:32,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:33:32,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:33:32,655 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 00:33:32,688 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 00:33:32,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:33:32,768 INFO L262 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-19 00:33:32,772 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:33:34,586 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:33:34,586 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:33:36,786 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:33:36,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1006782972] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:33:36,786 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:33:36,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 18, 19] total 43 [2023-12-19 00:33:36,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040217529] [2023-12-19 00:33:36,786 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:33:36,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-12-19 00:33:36,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:33:36,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-12-19 00:33:36,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=1615, Unknown=0, NotChecked=0, Total=1806 [2023-12-19 00:33:36,788 INFO L87 Difference]: Start difference. First operand 43124 states and 54714 transitions. Second operand has 43 states, 43 states have (on average 5.6976744186046515) internal successors, (245), 43 states have internal predecessors, (245), 0 states have call successors, (0), 0 states 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 00:33:56,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:33:56,363 INFO L93 Difference]: Finished difference Result 148250 states and 186700 transitions. [2023-12-19 00:33:56,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2023-12-19 00:33:56,363 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 5.6976744186046515) internal successors, (245), 43 states have internal predecessors, (245), 0 states have call successors, (0), 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 86 [2023-12-19 00:33:56,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:33:56,483 INFO L225 Difference]: With dead ends: 148250 [2023-12-19 00:33:56,483 INFO L226 Difference]: Without dead ends: 111390 [2023-12-19 00:33:56,506 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11640 ImplicationChecksByTransitivity, 15.2s TimeCoverageRelationStatistics Valid=5588, Invalid=28084, Unknown=0, NotChecked=0, Total=33672 [2023-12-19 00:33:56,506 INFO L413 NwaCegarLoop]: 1552 mSDtfsCounter, 26257 mSDsluCounter, 19612 mSDsCounter, 0 mSdLazyCounter, 2616 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26257 SdHoareTripleChecker+Valid, 21164 SdHoareTripleChecker+Invalid, 2740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 2616 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-19 00:33:56,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26257 Valid, 21164 Invalid, 2740 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [124 Valid, 2616 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-19 00:33:56,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111390 states. [2023-12-19 00:34:00,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111390 to 101430. [2023-12-19 00:34:00,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101430 states, 101428 states have (on average 1.249369010529637) internal successors, (126721), 101429 states have internal predecessors, (126721), 0 states have call successors, (0), 0 states 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 00:34:00,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101430 states to 101430 states and 126721 transitions. [2023-12-19 00:34:00,688 INFO L78 Accepts]: Start accepts. Automaton has 101430 states and 126721 transitions. Word has length 86 [2023-12-19 00:34:00,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:34:00,689 INFO L495 AbstractCegarLoop]: Abstraction has 101430 states and 126721 transitions. [2023-12-19 00:34:00,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 5.6976744186046515) internal successors, (245), 43 states have internal predecessors, (245), 0 states have call successors, (0), 0 states 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 00:34:00,689 INFO L276 IsEmpty]: Start isEmpty. Operand 101430 states and 126721 transitions. [2023-12-19 00:34:00,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-19 00:34:00,691 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:34:00,691 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:34:00,698 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 00:34:00,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-12-19 00:34:00,899 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:34:00,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:34:00,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1962420458, now seen corresponding path program 1 times [2023-12-19 00:34:00,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:34:00,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686416905] [2023-12-19 00:34:00,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:34:00,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:34:00,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:34:01,121 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:34:01,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:34:01,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686416905] [2023-12-19 00:34:01,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686416905] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:34:01,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2139910741] [2023-12-19 00:34:01,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:34:01,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:34:01,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:34:01,124 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 00:34:01,126 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 00:34:01,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:34:01,232 INFO L262 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-19 00:34:01,237 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:34:01,934 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:34:01,934 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:34:02,585 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:34:02,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2139910741] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:34:02,586 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:34:02,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 13] total 32 [2023-12-19 00:34:02,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728608956] [2023-12-19 00:34:02,586 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:34:02,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-19 00:34:02,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:34:02,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-19 00:34:02,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=887, Unknown=0, NotChecked=0, Total=992 [2023-12-19 00:34:02,587 INFO L87 Difference]: Start difference. First operand 101430 states and 126721 transitions. Second operand has 32 states, 32 states have (on average 7.125) internal successors, (228), 32 states have internal predecessors, (228), 0 states have call successors, (0), 0 states 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 00:34:16,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:34:16,225 INFO L93 Difference]: Finished difference Result 311600 states and 389320 transitions. [2023-12-19 00:34:16,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2023-12-19 00:34:16,225 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 7.125) internal successors, (228), 32 states have internal predecessors, (228), 0 states have call successors, (0), 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 87 [2023-12-19 00:34:16,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:34:16,673 INFO L225 Difference]: With dead ends: 311600 [2023-12-19 00:34:16,673 INFO L226 Difference]: Without dead ends: 219650 [2023-12-19 00:34:16,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6873 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=3015, Invalid=16725, Unknown=0, NotChecked=0, Total=19740 [2023-12-19 00:34:16,785 INFO L413 NwaCegarLoop]: 1547 mSDtfsCounter, 18498 mSDsluCounter, 19141 mSDsCounter, 0 mSdLazyCounter, 2163 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18498 SdHoareTripleChecker+Valid, 20688 SdHoareTripleChecker+Invalid, 2263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 2163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-19 00:34:16,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18498 Valid, 20688 Invalid, 2263 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [100 Valid, 2163 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-19 00:34:16,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219650 states. [2023-12-19 00:34:21,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219650 to 86398. [2023-12-19 00:34:21,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86398 states, 86396 states have (on average 1.2370364368720774) internal successors, (106875), 86397 states have internal predecessors, (106875), 0 states have call successors, (0), 0 states 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 00:34:21,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86398 states to 86398 states and 106875 transitions. [2023-12-19 00:34:21,452 INFO L78 Accepts]: Start accepts. Automaton has 86398 states and 106875 transitions. Word has length 87 [2023-12-19 00:34:21,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:34:21,453 INFO L495 AbstractCegarLoop]: Abstraction has 86398 states and 106875 transitions. [2023-12-19 00:34:21,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 7.125) internal successors, (228), 32 states have internal predecessors, (228), 0 states have call successors, (0), 0 states 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 00:34:21,453 INFO L276 IsEmpty]: Start isEmpty. Operand 86398 states and 106875 transitions. [2023-12-19 00:34:21,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-19 00:34:21,460 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:34:21,460 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:34:21,467 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-19 00:34:21,665 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,SelfDestructingSolverStorable26 [2023-12-19 00:34:21,665 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:34:21,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:34:21,665 INFO L85 PathProgramCache]: Analyzing trace with hash 349138917, now seen corresponding path program 1 times [2023-12-19 00:34:21,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:34:21,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911453974] [2023-12-19 00:34:21,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:34:21,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:34:21,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:34:24,058 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:34:24,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:34:24,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911453974] [2023-12-19 00:34:24,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911453974] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:34:24,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1137156182] [2023-12-19 00:34:24,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:34:24,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:34:24,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:34:24,065 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 00:34:24,067 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 00:34:24,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:34:24,203 INFO L262 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-19 00:34:24,204 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:34:25,219 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:34:25,219 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:34:26,654 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:34:26,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1137156182] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:34:26,654 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:34:26,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 15, 16] total 59 [2023-12-19 00:34:26,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909000811] [2023-12-19 00:34:26,654 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:34:26,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2023-12-19 00:34:26,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:34:26,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2023-12-19 00:34:26,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=3200, Unknown=0, NotChecked=0, Total=3422 [2023-12-19 00:34:26,656 INFO L87 Difference]: Start difference. First operand 86398 states and 106875 transitions. Second operand has 59 states, 59 states have (on average 4.169491525423729) internal successors, (246), 59 states have internal predecessors, (246), 0 states have call successors, (0), 0 states 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 00:35:29,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:35:29,847 INFO L93 Difference]: Finished difference Result 197172 states and 242935 transitions. [2023-12-19 00:35:29,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 315 states. [2023-12-19 00:35:29,847 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 4.169491525423729) internal successors, (246), 59 states have internal predecessors, (246), 0 states have call successors, (0), 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 88 [2023-12-19 00:35:29,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:35:30,031 INFO L225 Difference]: With dead ends: 197172 [2023-12-19 00:35:30,031 INFO L226 Difference]: Without dead ends: 164437 [2023-12-19 00:35:30,079 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 518 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 369 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54088 ImplicationChecksByTransitivity, 50.5s TimeCoverageRelationStatistics Valid=20013, Invalid=117257, Unknown=0, NotChecked=0, Total=137270 [2023-12-19 00:35:30,080 INFO L413 NwaCegarLoop]: 1666 mSDtfsCounter, 26564 mSDsluCounter, 40572 mSDsCounter, 0 mSdLazyCounter, 10435 mSolverCounterSat, 245 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26564 SdHoareTripleChecker+Valid, 42238 SdHoareTripleChecker+Invalid, 10680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 245 IncrementalHoareTripleChecker+Valid, 10435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2023-12-19 00:35:30,080 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26564 Valid, 42238 Invalid, 10680 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [245 Valid, 10435 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2023-12-19 00:35:30,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164437 states. [2023-12-19 00:35:34,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164437 to 75465. [2023-12-19 00:35:34,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75465 states, 75463 states have (on average 1.2380901898943852) internal successors, (93430), 75464 states have internal predecessors, (93430), 0 states have call successors, (0), 0 states 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 00:35:35,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75465 states to 75465 states and 93430 transitions. [2023-12-19 00:35:35,065 INFO L78 Accepts]: Start accepts. Automaton has 75465 states and 93430 transitions. Word has length 88 [2023-12-19 00:35:35,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:35:35,065 INFO L495 AbstractCegarLoop]: Abstraction has 75465 states and 93430 transitions. [2023-12-19 00:35:35,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 4.169491525423729) internal successors, (246), 59 states have internal predecessors, (246), 0 states have call successors, (0), 0 states 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 00:35:35,065 INFO L276 IsEmpty]: Start isEmpty. Operand 75465 states and 93430 transitions. [2023-12-19 00:35:35,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-19 00:35:35,079 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:35:35,080 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:35:35,087 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 00:35:35,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-12-19 00:35:35,280 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:35:35,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:35:35,281 INFO L85 PathProgramCache]: Analyzing trace with hash -518134421, now seen corresponding path program 1 times [2023-12-19 00:35:35,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:35:35,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135623047] [2023-12-19 00:35:35,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:35:35,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:35:35,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:35:37,386 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:35:37,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:35:37,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135623047] [2023-12-19 00:35:37,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135623047] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:35:37,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [242400312] [2023-12-19 00:35:37,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:35:37,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:35:37,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:35:37,388 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 00:35:37,389 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 00:35:37,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:35:37,521 INFO L262 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 40 conjunts are in the unsatisfiable core [2023-12-19 00:35:37,524 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:35:41,060 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:35:41,060 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:35:44,602 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:35:44,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [242400312] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:35:44,602 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:35:44,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 24, 23] total 69 [2023-12-19 00:35:44,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317699470] [2023-12-19 00:35:44,602 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:35:44,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2023-12-19 00:35:44,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:35:44,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2023-12-19 00:35:44,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=483, Invalid=4209, Unknown=0, NotChecked=0, Total=4692 [2023-12-19 00:35:44,604 INFO L87 Difference]: Start difference. First operand 75465 states and 93430 transitions. Second operand has 69 states, 69 states have (on average 3.420289855072464) internal successors, (236), 69 states have internal predecessors, (236), 0 states have call successors, (0), 0 states 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 00:37:34,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:37:34,935 INFO L93 Difference]: Finished difference Result 201798 states and 247929 transitions. [2023-12-19 00:37:34,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 374 states. [2023-12-19 00:37:34,937 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 3.420289855072464) internal successors, (236), 69 states have internal predecessors, (236), 0 states have call successors, (0), 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 90 [2023-12-19 00:37:34,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:37:35,138 INFO L225 Difference]: With dead ends: 201798 [2023-12-19 00:37:35,138 INFO L226 Difference]: Without dead ends: 171387 [2023-12-19 00:37:35,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 573 GetRequests, 135 SyntacticMatches, 2 SemanticMatches, 436 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80325 ImplicationChecksByTransitivity, 93.4s TimeCoverageRelationStatistics Valid=30795, Invalid=160611, Unknown=0, NotChecked=0, Total=191406 [2023-12-19 00:37:35,168 INFO L413 NwaCegarLoop]: 1684 mSDtfsCounter, 31646 mSDsluCounter, 45176 mSDsCounter, 0 mSdLazyCounter, 13938 mSolverCounterSat, 383 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31646 SdHoareTripleChecker+Valid, 46860 SdHoareTripleChecker+Invalid, 14321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 383 IncrementalHoareTripleChecker+Valid, 13938 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2023-12-19 00:37:35,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31646 Valid, 46860 Invalid, 14321 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [383 Valid, 13938 Invalid, 0 Unknown, 0 Unchecked, 10.3s Time] [2023-12-19 00:37:35,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171387 states. [2023-12-19 00:37:42,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171387 to 93795. [2023-12-19 00:37:42,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93795 states, 93793 states have (on average 1.2406043094900472) internal successors, (116360), 93794 states have internal predecessors, (116360), 0 states have call successors, (0), 0 states 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 00:37:42,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93795 states to 93795 states and 116360 transitions. [2023-12-19 00:37:42,375 INFO L78 Accepts]: Start accepts. Automaton has 93795 states and 116360 transitions. Word has length 90 [2023-12-19 00:37:42,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:37:42,375 INFO L495 AbstractCegarLoop]: Abstraction has 93795 states and 116360 transitions. [2023-12-19 00:37:42,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 3.420289855072464) internal successors, (236), 69 states have internal predecessors, (236), 0 states have call successors, (0), 0 states 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 00:37:42,376 INFO L276 IsEmpty]: Start isEmpty. Operand 93795 states and 116360 transitions. [2023-12-19 00:37:42,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-19 00:37:42,382 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:37:42,382 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:37:42,387 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 00:37:42,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:37:42,588 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:37:42,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:37:42,588 INFO L85 PathProgramCache]: Analyzing trace with hash -354426684, now seen corresponding path program 1 times [2023-12-19 00:37:42,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:37:42,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752249124] [2023-12-19 00:37:42,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:37:42,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:37:42,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:37:42,712 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:37:42,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:37:42,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752249124] [2023-12-19 00:37:42,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752249124] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:37:42,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:37:42,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:37:42,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556611704] [2023-12-19 00:37:42,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:37:42,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 00:37:42,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:37:42,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 00:37:42,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 00:37:42,713 INFO L87 Difference]: Start difference. First operand 93795 states and 116360 transitions. Second operand has 4 states, 4 states have (on average 32.5) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states 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 00:37:51,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:37:51,764 INFO L93 Difference]: Finished difference Result 96838 states and 122008 transitions. [2023-12-19 00:37:51,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 00:37:51,765 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 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 130 [2023-12-19 00:37:51,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:37:51,863 INFO L225 Difference]: With dead ends: 96838 [2023-12-19 00:37:51,864 INFO L226 Difference]: Without dead ends: 95297 [2023-12-19 00:37:51,877 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 00:37:51,877 INFO L413 NwaCegarLoop]: 795 mSDtfsCounter, 806 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 3112 mSolverCounterSat, 729 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 806 SdHoareTripleChecker+Valid, 911 SdHoareTripleChecker+Invalid, 3841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 729 IncrementalHoareTripleChecker+Valid, 3112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-19 00:37:51,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [806 Valid, 911 Invalid, 3841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [729 Valid, 3112 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-19 00:37:51,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95297 states. [2023-12-19 00:37:58,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95297 to 95297. [2023-12-19 00:37:58,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95297 states, 95295 states have (on average 1.2376095283068367) internal successors, (117938), 95296 states have internal predecessors, (117938), 0 states have call successors, (0), 0 states 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 00:37:58,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95297 states to 95297 states and 117938 transitions. [2023-12-19 00:37:58,346 INFO L78 Accepts]: Start accepts. Automaton has 95297 states and 117938 transitions. Word has length 130 [2023-12-19 00:37:58,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:37:58,346 INFO L495 AbstractCegarLoop]: Abstraction has 95297 states and 117938 transitions. [2023-12-19 00:37:58,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states 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 00:37:58,346 INFO L276 IsEmpty]: Start isEmpty. Operand 95297 states and 117938 transitions. [2023-12-19 00:37:58,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-19 00:37:58,354 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:37:58,355 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2023-12-19 00:37:58,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-12-19 00:37:58,355 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:37:58,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:37:58,355 INFO L85 PathProgramCache]: Analyzing trace with hash 403003778, now seen corresponding path program 1 times [2023-12-19 00:37:58,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:37:58,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27816861] [2023-12-19 00:37:58,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:37:58,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:37:58,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:37:58,955 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 28 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:37:58,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:37:58,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27816861] [2023-12-19 00:37:58,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27816861] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:37:58,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1357899555] [2023-12-19 00:37:58,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:37:58,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:37:58,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:37:58,957 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 00:37:58,982 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 00:37:59,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:37:59,099 INFO L262 TraceCheckSpWp]: Trace formula consists of 599 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-19 00:37:59,101 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:38:00,066 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 38 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:38:00,066 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:38:01,322 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 36 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:38:01,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1357899555] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:38:01,323 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:38:01,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 31 [2023-12-19 00:38:01,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746131806] [2023-12-19 00:38:01,323 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:38:01,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-19 00:38:01,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:38:01,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-19 00:38:01,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=880, Unknown=0, NotChecked=0, Total=992 [2023-12-19 00:38:01,324 INFO L87 Difference]: Start difference. First operand 95297 states and 117938 transitions. Second operand has 32 states, 32 states have (on average 11.71875) internal successors, (375), 31 states have internal predecessors, (375), 0 states have call successors, (0), 0 states 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 00:38:12,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:38:12,594 INFO L93 Difference]: Finished difference Result 171678 states and 213239 transitions. [2023-12-19 00:38:12,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2023-12-19 00:38:12,594 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 11.71875) internal successors, (375), 31 states have internal predecessors, (375), 0 states have call successors, (0), 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 138 [2023-12-19 00:38:12,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:38:12,732 INFO L225 Difference]: With dead ends: 171678 [2023-12-19 00:38:12,732 INFO L226 Difference]: Without dead ends: 112934 [2023-12-19 00:38:12,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 257 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2027 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=1754, Invalid=7176, Unknown=0, NotChecked=0, Total=8930 [2023-12-19 00:38:12,768 INFO L413 NwaCegarLoop]: 1483 mSDtfsCounter, 24292 mSDsluCounter, 12427 mSDsCounter, 0 mSdLazyCounter, 1433 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24292 SdHoareTripleChecker+Valid, 13910 SdHoareTripleChecker+Invalid, 1479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 00:38:12,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24292 Valid, 13910 Invalid, 1479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1433 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 00:38:12,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112934 states. [2023-12-19 00:38:18,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112934 to 72243. [2023-12-19 00:38:18,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72243 states, 72241 states have (on average 1.2281806730250135) internal successors, (88725), 72242 states have internal predecessors, (88725), 0 states have call successors, (0), 0 states 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 00:38:18,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72243 states to 72243 states and 88725 transitions. [2023-12-19 00:38:18,892 INFO L78 Accepts]: Start accepts. Automaton has 72243 states and 88725 transitions. Word has length 138 [2023-12-19 00:38:18,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:38:18,892 INFO L495 AbstractCegarLoop]: Abstraction has 72243 states and 88725 transitions. [2023-12-19 00:38:18,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 11.71875) internal successors, (375), 31 states have internal predecessors, (375), 0 states have call successors, (0), 0 states 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 00:38:18,892 INFO L276 IsEmpty]: Start isEmpty. Operand 72243 states and 88725 transitions. [2023-12-19 00:38:18,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-19 00:38:18,899 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:38:18,899 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2023-12-19 00:38:18,910 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 00:38:19,105 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,SelfDestructingSolverStorable30 [2023-12-19 00:38:19,106 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:38:19,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:38:19,106 INFO L85 PathProgramCache]: Analyzing trace with hash -1008049200, now seen corresponding path program 1 times [2023-12-19 00:38:19,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:38:19,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735444184] [2023-12-19 00:38:19,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:38:19,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:38:19,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:38:19,612 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 13 proven. 97 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:38:19,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:38:19,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735444184] [2023-12-19 00:38:19,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735444184] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:38:19,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1487401809] [2023-12-19 00:38:19,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:38:19,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:38:19,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:38:19,614 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 00:38:19,615 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 00:38:19,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:38:19,757 INFO L262 TraceCheckSpWp]: Trace formula consists of 601 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-19 00:38:19,759 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:38:20,727 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 19 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:38:20,727 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:38:22,382 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 13 proven. 97 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:38:22,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1487401809] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:38:22,382 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:38:22,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 26 [2023-12-19 00:38:22,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032733784] [2023-12-19 00:38:22,382 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:38:22,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-12-19 00:38:22,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:38:22,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-12-19 00:38:22,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=602, Unknown=0, NotChecked=0, Total=702 [2023-12-19 00:38:22,383 INFO L87 Difference]: Start difference. First operand 72243 states and 88725 transitions. Second operand has 27 states, 27 states have (on average 11.518518518518519) internal successors, (311), 26 states have internal predecessors, (311), 0 states have call successors, (0), 0 states 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 00:38:28,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:38:28,643 INFO L93 Difference]: Finished difference Result 96984 states and 119303 transitions. [2023-12-19 00:38:28,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-19 00:38:28,643 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 11.518518518518519) internal successors, (311), 26 states have internal predecessors, (311), 0 states have call successors, (0), 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 138 [2023-12-19 00:38:28,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:38:28,772 INFO L225 Difference]: With dead ends: 96984 [2023-12-19 00:38:28,772 INFO L226 Difference]: Without dead ends: 73351 [2023-12-19 00:38:28,782 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 260 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=448, Invalid=1532, Unknown=0, NotChecked=0, Total=1980 [2023-12-19 00:38:28,783 INFO L413 NwaCegarLoop]: 1494 mSDtfsCounter, 10242 mSDsluCounter, 13603 mSDsCounter, 0 mSdLazyCounter, 796 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10242 SdHoareTripleChecker+Valid, 15097 SdHoareTripleChecker+Invalid, 815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 00:38:28,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10242 Valid, 15097 Invalid, 815 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 796 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 00:38:28,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73351 states. [2023-12-19 00:38:33,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73351 to 59737. [2023-12-19 00:38:33,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59737 states, 59735 states have (on average 1.2250272034820457) internal successors, (73177), 59736 states have internal predecessors, (73177), 0 states have call successors, (0), 0 states 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 00:38:33,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59737 states to 59737 states and 73177 transitions. [2023-12-19 00:38:33,853 INFO L78 Accepts]: Start accepts. Automaton has 59737 states and 73177 transitions. Word has length 138 [2023-12-19 00:38:33,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:38:33,853 INFO L495 AbstractCegarLoop]: Abstraction has 59737 states and 73177 transitions. [2023-12-19 00:38:33,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 11.518518518518519) internal successors, (311), 26 states have internal predecessors, (311), 0 states have call successors, (0), 0 states 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 00:38:33,853 INFO L276 IsEmpty]: Start isEmpty. Operand 59737 states and 73177 transitions. [2023-12-19 00:38:33,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-19 00:38:33,859 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:38:33,859 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2023-12-19 00:38:33,866 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 00:38:34,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:38:34,064 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:38:34,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:38:34,064 INFO L85 PathProgramCache]: Analyzing trace with hash -298832565, now seen corresponding path program 1 times [2023-12-19 00:38:34,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:38:34,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499206152] [2023-12-19 00:38:34,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:38:34,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:38:34,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:38:34,875 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 48 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:38:34,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:38:34,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499206152] [2023-12-19 00:38:34,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499206152] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:38:34,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1481780720] [2023-12-19 00:38:34,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:38:34,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:38:34,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:38:34,877 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 00:38:34,879 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 00:38:35,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:38:35,024 INFO L262 TraceCheckSpWp]: Trace formula consists of 603 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-19 00:38:35,026 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:38:35,645 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 42 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:38:35,645 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:38:37,585 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 40 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:38:37,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1481780720] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:38:37,585 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:38:37,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11, 11] total 35 [2023-12-19 00:38:37,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643048813] [2023-12-19 00:38:37,586 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:38:37,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-12-19 00:38:37,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:38:37,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-12-19 00:38:37,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=1138, Unknown=0, NotChecked=0, Total=1260 [2023-12-19 00:38:37,587 INFO L87 Difference]: Start difference. First operand 59737 states and 73177 transitions. Second operand has 36 states, 36 states have (on average 10.277777777777779) internal successors, (370), 35 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 00:38:54,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:38:54,543 INFO L93 Difference]: Finished difference Result 145103 states and 176852 transitions. [2023-12-19 00:38:54,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2023-12-19 00:38:54,544 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 10.277777777777779) internal successors, (370), 35 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 139 [2023-12-19 00:38:54,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:38:54,665 INFO L225 Difference]: With dead ends: 145103 [2023-12-19 00:38:54,665 INFO L226 Difference]: Without dead ends: 101991 [2023-12-19 00:38:54,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9363 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=4309, Invalid=24421, Unknown=0, NotChecked=0, Total=28730 [2023-12-19 00:38:54,681 INFO L413 NwaCegarLoop]: 1534 mSDtfsCounter, 27479 mSDsluCounter, 14826 mSDsCounter, 0 mSdLazyCounter, 2696 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27479 SdHoareTripleChecker+Valid, 16360 SdHoareTripleChecker+Invalid, 2773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 2696 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-19 00:38:54,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27479 Valid, 16360 Invalid, 2773 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [77 Valid, 2696 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-19 00:38:54,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101991 states. [2023-12-19 00:39:02,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101991 to 84825. [2023-12-19 00:39:02,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84825 states, 84823 states have (on average 1.209836954599578) internal successors, (102622), 84824 states have internal predecessors, (102622), 0 states have call successors, (0), 0 states 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 00:39:02,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84825 states to 84825 states and 102622 transitions. [2023-12-19 00:39:02,979 INFO L78 Accepts]: Start accepts. Automaton has 84825 states and 102622 transitions. Word has length 139 [2023-12-19 00:39:02,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:39:02,979 INFO L495 AbstractCegarLoop]: Abstraction has 84825 states and 102622 transitions. [2023-12-19 00:39:02,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 10.277777777777779) internal successors, (370), 35 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 00:39:02,979 INFO L276 IsEmpty]: Start isEmpty. Operand 84825 states and 102622 transitions. [2023-12-19 00:39:02,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-19 00:39:02,985 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:39:02,985 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2023-12-19 00:39:02,993 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 00:39:03,190 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,SelfDestructingSolverStorable32 [2023-12-19 00:39:03,190 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:39:03,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:39:03,191 INFO L85 PathProgramCache]: Analyzing trace with hash -1369300901, now seen corresponding path program 1 times [2023-12-19 00:39:03,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:39:03,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403560315] [2023-12-19 00:39:03,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:39:03,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:39:03,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:39:03,879 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 22 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:39:03,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:39:03,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403560315] [2023-12-19 00:39:03,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403560315] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:39:03,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [262308566] [2023-12-19 00:39:03,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:39:03,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:39:03,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:39:03,880 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 00:39:03,882 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 00:39:04,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:39:04,028 INFO L262 TraceCheckSpWp]: Trace formula consists of 607 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-19 00:39:04,030 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:39:05,849 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 22 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:39:05,849 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:39:08,673 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 22 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:39:08,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [262308566] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:39:08,673 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:39:08,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 18, 18] total 53 [2023-12-19 00:39:08,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912530804] [2023-12-19 00:39:08,674 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:39:08,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-12-19 00:39:08,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:39:08,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-12-19 00:39:08,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=298, Invalid=2458, Unknown=0, NotChecked=0, Total=2756 [2023-12-19 00:39:08,675 INFO L87 Difference]: Start difference. First operand 84825 states and 102622 transitions. Second operand has 53 states, 53 states have (on average 7.509433962264151) internal successors, (398), 53 states have internal predecessors, (398), 0 states have call successors, (0), 0 states 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 00:39:27,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:39:27,827 INFO L93 Difference]: Finished difference Result 144204 states and 174003 transitions. [2023-12-19 00:39:27,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2023-12-19 00:39:27,828 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 7.509433962264151) internal successors, (398), 53 states have internal predecessors, (398), 0 states have call successors, (0), 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 141 [2023-12-19 00:39:27,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:39:27,970 INFO L225 Difference]: With dead ends: 144204 [2023-12-19 00:39:27,970 INFO L226 Difference]: Without dead ends: 123862 [2023-12-19 00:39:27,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 249 SyntacticMatches, 1 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4428 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=2646, Invalid=13356, Unknown=0, NotChecked=0, Total=16002 [2023-12-19 00:39:27,999 INFO L413 NwaCegarLoop]: 1556 mSDtfsCounter, 13742 mSDsluCounter, 30722 mSDsCounter, 0 mSdLazyCounter, 2646 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13742 SdHoareTripleChecker+Valid, 32278 SdHoareTripleChecker+Invalid, 2763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 2646 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-19 00:39:27,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13742 Valid, 32278 Invalid, 2763 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [117 Valid, 2646 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-19 00:39:28,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123862 states. [2023-12-19 00:39:38,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123862 to 100480. [2023-12-19 00:39:38,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100480 states, 100478 states have (on average 1.2039451422201874) internal successors, (120970), 100479 states have internal predecessors, (120970), 0 states have call successors, (0), 0 states 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 00:39:38,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100480 states to 100480 states and 120970 transitions. [2023-12-19 00:39:38,917 INFO L78 Accepts]: Start accepts. Automaton has 100480 states and 120970 transitions. Word has length 141 [2023-12-19 00:39:38,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:39:38,918 INFO L495 AbstractCegarLoop]: Abstraction has 100480 states and 120970 transitions. [2023-12-19 00:39:38,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 7.509433962264151) internal successors, (398), 53 states have internal predecessors, (398), 0 states have call successors, (0), 0 states 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 00:39:38,918 INFO L276 IsEmpty]: Start isEmpty. Operand 100480 states and 120970 transitions. [2023-12-19 00:39:38,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-19 00:39:38,925 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:39:38,925 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2023-12-19 00:39:38,933 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 00:39:39,128 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,SelfDestructingSolverStorable33 [2023-12-19 00:39:39,131 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:39:39,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:39:39,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1841531393, now seen corresponding path program 1 times [2023-12-19 00:39:39,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:39:39,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984176437] [2023-12-19 00:39:39,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:39:39,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:39:39,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:39:41,224 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 13 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:39:41,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:39:41,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984176437] [2023-12-19 00:39:41,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984176437] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:39:41,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [963948523] [2023-12-19 00:39:41,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:39:41,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:39:41,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:39:41,227 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 00:39:41,228 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 00:39:41,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:39:41,372 INFO L262 TraceCheckSpWp]: Trace formula consists of 607 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-19 00:39:41,374 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:39:42,993 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 31 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:39:42,994 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:39:45,327 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 31 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:39:45,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [963948523] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:39:45,327 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:39:45,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 19, 19] total 70 [2023-12-19 00:39:45,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767851780] [2023-12-19 00:39:45,328 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:39:45,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2023-12-19 00:39:45,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:39:45,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2023-12-19 00:39:45,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=324, Invalid=4506, Unknown=0, NotChecked=0, Total=4830 [2023-12-19 00:39:45,329 INFO L87 Difference]: Start difference. First operand 100480 states and 120970 transitions. Second operand has 70 states, 70 states have (on average 5.714285714285714) internal successors, (400), 70 states have internal predecessors, (400), 0 states have call successors, (0), 0 states 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 00:41:31,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:41:31,174 INFO L93 Difference]: Finished difference Result 249759 states and 299722 transitions. [2023-12-19 00:41:31,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 349 states. [2023-12-19 00:41:31,175 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 5.714285714285714) internal successors, (400), 70 states have internal predecessors, (400), 0 states have call successors, (0), 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 141 [2023-12-19 00:41:31,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:41:31,445 INFO L225 Difference]: With dead ends: 249759 [2023-12-19 00:41:31,445 INFO L226 Difference]: Without dead ends: 216626 [2023-12-19 00:41:31,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 663 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 415 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62787 ImplicationChecksByTransitivity, 75.4s TimeCoverageRelationStatistics Valid=15669, Invalid=157803, Unknown=0, NotChecked=0, Total=173472 [2023-12-19 00:41:31,500 INFO L413 NwaCegarLoop]: 1726 mSDtfsCounter, 30411 mSDsluCounter, 60190 mSDsCounter, 0 mSdLazyCounter, 13475 mSolverCounterSat, 338 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30411 SdHoareTripleChecker+Valid, 61916 SdHoareTripleChecker+Invalid, 13813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 338 IncrementalHoareTripleChecker+Valid, 13475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2023-12-19 00:41:31,500 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30411 Valid, 61916 Invalid, 13813 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [338 Valid, 13475 Invalid, 0 Unknown, 0 Unchecked, 9.2s Time] [2023-12-19 00:41:31,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216626 states. [2023-12-19 00:41:52,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216626 to 170983. [2023-12-19 00:41:53,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170983 states, 170981 states have (on average 1.199238511881437) internal successors, (205047), 170982 states have internal predecessors, (205047), 0 states have call successors, (0), 0 states 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 00:41:53,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170983 states to 170983 states and 205047 transitions. [2023-12-19 00:41:53,280 INFO L78 Accepts]: Start accepts. Automaton has 170983 states and 205047 transitions. Word has length 141 [2023-12-19 00:41:53,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:41:53,280 INFO L495 AbstractCegarLoop]: Abstraction has 170983 states and 205047 transitions. [2023-12-19 00:41:53,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 5.714285714285714) internal successors, (400), 70 states have internal predecessors, (400), 0 states have call successors, (0), 0 states 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 00:41:53,280 INFO L276 IsEmpty]: Start isEmpty. Operand 170983 states and 205047 transitions. [2023-12-19 00:41:53,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-19 00:41:53,289 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:41:53,289 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2023-12-19 00:41:53,294 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-12-19 00:41:53,495 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,SelfDestructingSolverStorable34 [2023-12-19 00:41:53,495 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:41:53,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:41:53,495 INFO L85 PathProgramCache]: Analyzing trace with hash 1961249187, now seen corresponding path program 1 times [2023-12-19 00:41:53,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:41:53,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727266399] [2023-12-19 00:41:53,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:41:53,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:41:53,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:41:54,538 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 49 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:41:54,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:41:54,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727266399] [2023-12-19 00:41:54,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727266399] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:41:54,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1860940699] [2023-12-19 00:41:54,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:41:54,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:41:54,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:41:54,540 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 00:41:54,560 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 00:41:54,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:41:54,703 INFO L262 TraceCheckSpWp]: Trace formula consists of 607 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-19 00:41:54,705 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:41:56,706 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 40 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:41:56,706 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:42:00,154 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 40 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:42:00,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1860940699] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:42:00,155 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:42:00,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 23, 22] total 61 [2023-12-19 00:42:00,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426386979] [2023-12-19 00:42:00,156 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:42:00,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2023-12-19 00:42:00,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:42:00,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2023-12-19 00:42:00,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=303, Invalid=3357, Unknown=0, NotChecked=0, Total=3660 [2023-12-19 00:42:00,158 INFO L87 Difference]: Start difference. First operand 170983 states and 205047 transitions. Second operand has 61 states, 61 states have (on average 6.213114754098361) internal successors, (379), 61 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2023-12-19 00:46:43,056 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-19 00:46:43,060 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-19 00:46:43,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 808 states. [2023-12-19 00:46:43,119 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1104 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 862 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345388 ImplicationChecksByTransitivity, 224.2s TimeCoverageRelationStatistics Valid=56006, Invalid=689626, Unknown=0, NotChecked=0, Total=745632 [2023-12-19 00:46:43,120 INFO L413 NwaCegarLoop]: 607 mSDtfsCounter, 23899 mSDsluCounter, 17465 mSDsCounter, 0 mSdLazyCounter, 10671 mSolverCounterSat, 762 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23899 SdHoareTripleChecker+Valid, 18072 SdHoareTripleChecker+Invalid, 11433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 762 IncrementalHoareTripleChecker+Valid, 10671 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2023-12-19 00:46:43,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23899 Valid, 18072 Invalid, 11433 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [762 Valid, 10671 Invalid, 0 Unknown, 0 Unchecked, 9.4s Time] [2023-12-19 00:46:43,121 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-12-19 00:46:43,142 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 00:46:43,327 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,SelfDestructingSolverStorable35 [2023-12-19 00:46:43,327 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (170983states) and FLOYD_HOARE automaton (currently 808 states, 61 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-17-4-4-3-2-2-2-2-1 term,while SimplifyDDA2 was simplifying 3 xjuncts wrt. a ∨-3-1 context. [2023-12-19 00:46:43,329 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-12-19 00:46:43,331 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:46:43,334 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-19 00:46:43,335 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.12 12:46:43 BoogieIcfgContainer [2023-12-19 00:46:43,335 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-19 00:46:43,335 INFO L158 Benchmark]: Toolchain (without parser) took 825956.24ms. Allocated memory was 194.0MB in the beginning and 5.0GB in the end (delta: 4.8GB). Free memory was 125.2MB in the beginning and 3.7GB in the end (delta: -3.6GB). Peak memory consumption was 1.2GB. Max. memory is 8.0GB. [2023-12-19 00:46:43,335 INFO L158 Benchmark]: CDTParser took 0.47ms. Allocated memory is still 194.0MB. Free memory is still 140.9MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-19 00:46:43,336 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1347.52ms. Allocated memory was 194.0MB in the beginning and 268.4MB in the end (delta: 74.4MB). Free memory was 124.9MB in the beginning and 166.7MB in the end (delta: -41.8MB). Peak memory consumption was 89.0MB. Max. memory is 8.0GB. [2023-12-19 00:46:43,336 INFO L158 Benchmark]: Boogie Procedure Inliner took 371.50ms. Allocated memory is still 268.4MB. Free memory was 166.7MB in the beginning and 140.8MB in the end (delta: 25.9MB). Peak memory consumption was 29.5MB. Max. memory is 8.0GB. [2023-12-19 00:46:43,336 INFO L158 Benchmark]: Boogie Preprocessor took 438.54ms. Allocated memory is still 268.4MB. Free memory was 140.8MB in the beginning and 139.2MB in the end (delta: 1.6MB). Peak memory consumption was 125.3MB. Max. memory is 8.0GB. [2023-12-19 00:46:43,336 INFO L158 Benchmark]: RCFGBuilder took 3176.31ms. Allocated memory was 268.4MB in the beginning and 725.6MB in the end (delta: 457.2MB). Free memory was 139.2MB in the beginning and 428.1MB in the end (delta: -288.9MB). Peak memory consumption was 188.7MB. Max. memory is 8.0GB. [2023-12-19 00:46:43,336 INFO L158 Benchmark]: TraceAbstraction took 820616.97ms. Allocated memory was 725.6MB in the beginning and 5.0GB in the end (delta: 4.3GB). Free memory was 427.1MB in the beginning and 3.7GB in the end (delta: -3.3GB). Peak memory consumption was 997.2MB. Max. memory is 8.0GB. [2023-12-19 00:46:43,337 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.47ms. Allocated memory is still 194.0MB. Free memory is still 140.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 1347.52ms. Allocated memory was 194.0MB in the beginning and 268.4MB in the end (delta: 74.4MB). Free memory was 124.9MB in the beginning and 166.7MB in the end (delta: -41.8MB). Peak memory consumption was 89.0MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 371.50ms. Allocated memory is still 268.4MB. Free memory was 166.7MB in the beginning and 140.8MB in the end (delta: 25.9MB). Peak memory consumption was 29.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 438.54ms. Allocated memory is still 268.4MB. Free memory was 140.8MB in the beginning and 139.2MB in the end (delta: 1.6MB). Peak memory consumption was 125.3MB. Max. memory is 8.0GB. * RCFGBuilder took 3176.31ms. Allocated memory was 268.4MB in the beginning and 725.6MB in the end (delta: 457.2MB). Free memory was 139.2MB in the beginning and 428.1MB in the end (delta: -288.9MB). Peak memory consumption was 188.7MB. Max. memory is 8.0GB. * TraceAbstraction took 820616.97ms. Allocated memory was 725.6MB in the beginning and 5.0GB in the end (delta: 4.3GB). Free memory was 427.1MB in the beginning and 3.7GB in the end (delta: -3.3GB). Peak memory consumption was 997.2MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 437]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 437). Cancelled while NwaCegarLoop was constructing difference of abstraction (170983states) and FLOYD_HOARE automaton (currently 808 states, 61 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-17-4-4-3-2-2-2-2-1 term,while SimplifyDDA2 was simplifying 3 xjuncts wrt. a ∨-3-1 context. - TimeoutResultAtElement [Line: 632]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 632). Cancelled while NwaCegarLoop was constructing difference of abstraction (170983states) and FLOYD_HOARE automaton (currently 808 states, 61 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-17-4-4-3-2-2-2-2-1 term,while SimplifyDDA2 was simplifying 3 xjuncts wrt. a ∨-3-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 836 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 820.6s, OverallIterations: 36, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 677.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 348734 SdHoareTripleChecker+Valid, 52.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 348734 mSDsluCounter, 383355 SdHoareTripleChecker+Invalid, 46.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 329309 mSDsCounter, 4258 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 73160 IncrementalHoareTripleChecker+Invalid, 77418 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4258 mSolverCounterUnsat, 54046 mSDtfsCounter, 73160 mSolverCounterSat, 1.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5715 GetRequests, 2605 SyntacticMatches, 4 SemanticMatches, 3105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 580267 ImplicationChecksByTransitivity, 489.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=170983occurred in iteration=35, InterpolantAutomatonStates: 1825, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 85.0s AutomataMinimizationTime, 35 MinimizatonAttempts, 492156 StatesRemovedByMinimization, 31 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 52.4s InterpolantComputationTime, 4363 NumberOfCodeBlocks, 4363 NumberOfCodeBlocksAsserted, 49 NumberOfCheckSat, 5744 ConstructedInterpolants, 0 QuantifiedInterpolants, 110126 SizeOfPredicates, 123 NumberOfNonLiveVariables, 6539 ConjunctsInSsa, 312 ConjunctsInUnsatCore, 62 InterpolantComputations, 23 PerfectInterpolantSequences, 923/2543 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown