/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.6.1.ufo.UNBOUNDED.pals+Problem12_label05.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 00:49:09,233 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 00:49:09,315 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 00:49:09,320 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 00:49:09,320 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 00:49:09,348 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 00:49:09,348 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 00:49:09,348 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 00:49:09,349 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 00:49:09,353 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 00:49:09,353 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 00:49:09,354 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 00:49:09,354 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 00:49:09,355 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 00:49:09,355 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 00:49:09,356 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 00:49:09,356 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 00:49:09,356 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 00:49:09,356 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 00:49:09,357 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 00:49:09,358 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 00:49:09,358 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 00:49:09,358 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 00:49:09,359 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 00:49:09,359 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 00:49:09,359 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 00:49:09,359 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 00:49:09,359 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 00:49:09,360 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 00:49:09,360 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 00:49:09,361 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 00:49:09,361 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 00:49:09,362 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 00:49:09,362 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 00:49:09,362 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 00:49:09,362 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 00:49:09,362 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 00:49:09,362 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 00:49:09,363 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 00:49:09,363 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 00:49:09,363 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 00:49:09,363 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 00:49:09,363 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 00:49:09,364 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 00:49:09,604 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 00:49:09,628 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 00:49:09,630 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 00:49:09,631 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 00:49:09,631 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 00:49:09,632 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pals_lcr.6.1.ufo.UNBOUNDED.pals+Problem12_label05.c [2023-12-19 00:49:10,731 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 00:49:11,186 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 00:49:11,187 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.6.1.ufo.UNBOUNDED.pals+Problem12_label05.c [2023-12-19 00:49:11,213 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e2797f71/eaee33f6654145bc900b812ddc861040/FLAG7efea4b26 [2023-12-19 00:49:11,333 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e2797f71/eaee33f6654145bc900b812ddc861040 [2023-12-19 00:49:11,334 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 00:49:11,335 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 00:49:11,336 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 00:49:11,336 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 00:49:11,341 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 00:49:11,341 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 12:49:11" (1/1) ... [2023-12-19 00:49:11,342 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bd5fd4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:49:11, skipping insertion in model container [2023-12-19 00:49:11,342 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 12:49:11" (1/1) ... [2023-12-19 00:49:11,478 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 00:49:11,850 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.6.1.ufo.UNBOUNDED.pals+Problem12_label05.c[15547,15560] [2023-12-19 00:49:11,926 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.6.1.ufo.UNBOUNDED.pals+Problem12_label05.c[22483,22496] [2023-12-19 00:49:12,528 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 00:49:12,537 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 00:49:12,578 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.6.1.ufo.UNBOUNDED.pals+Problem12_label05.c[15547,15560] [2023-12-19 00:49:12,590 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.6.1.ufo.UNBOUNDED.pals+Problem12_label05.c[22483,22496] [2023-12-19 00:49:12,896 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 00:49:12,920 INFO L206 MainTranslator]: Completed translation [2023-12-19 00:49:12,920 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:49:12 WrapperNode [2023-12-19 00:49:12,920 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 00:49:12,921 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 00:49:12,921 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 00:49:12,921 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 00:49:12,927 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:49:12" (1/1) ... [2023-12-19 00:49:12,973 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:49:12" (1/1) ... [2023-12-19 00:49:13,355 INFO L138 Inliner]: procedures = 38, calls = 23, calls flagged for inlining = 18, calls inlined = 18, statements flattened = 5152 [2023-12-19 00:49:13,356 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 00:49:13,356 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 00:49:13,356 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 00:49:13,356 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 00:49:13,365 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:49:12" (1/1) ... [2023-12-19 00:49:13,366 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:49:12" (1/1) ... [2023-12-19 00:49:13,413 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:49:12" (1/1) ... [2023-12-19 00:49:13,606 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 00:49:13,606 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:49:12" (1/1) ... [2023-12-19 00:49:13,607 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:49:12" (1/1) ... [2023-12-19 00:49:13,693 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:49:12" (1/1) ... [2023-12-19 00:49:13,718 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:49:12" (1/1) ... [2023-12-19 00:49:13,739 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:49:12" (1/1) ... [2023-12-19 00:49:13,753 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:49:12" (1/1) ... [2023-12-19 00:49:13,803 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 00:49:13,853 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 00:49:13,853 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 00:49:13,853 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 00:49:13,854 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:49:12" (1/1) ... [2023-12-19 00:49:13,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 00:49:13,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:49:13,898 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 00:49:13,908 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 00:49:13,926 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 00:49:13,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 00:49:13,926 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 00:49:13,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 00:49:14,024 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 00:49:14,026 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 00:49:17,879 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 00:49:17,940 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 00:49:17,941 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-19 00:49:17,941 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 12:49:17 BoogieIcfgContainer [2023-12-19 00:49:17,941 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 00:49:17,943 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 00:49:17,943 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 00:49:17,945 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 00:49:17,946 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 12:49:11" (1/3) ... [2023-12-19 00:49:17,946 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63c926bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 12:49:17, skipping insertion in model container [2023-12-19 00:49:17,946 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:49:12" (2/3) ... [2023-12-19 00:49:17,947 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63c926bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 12:49:17, skipping insertion in model container [2023-12-19 00:49:17,947 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 12:49:17" (3/3) ... [2023-12-19 00:49:17,949 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.1.ufo.UNBOUNDED.pals+Problem12_label05.c [2023-12-19 00:49:17,964 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 00:49:17,964 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-19 00:49:18,029 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 00:49:18,034 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;@340e17c0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 00:49:18,034 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-19 00:49:18,042 INFO L276 IsEmpty]: Start isEmpty. Operand has 851 states, 848 states have (on average 1.9728773584905661) internal successors, (1673), 850 states have internal predecessors, (1673), 0 states have call successors, (0), 0 states 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 00:49:18,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-19 00:49:18,049 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:49:18,050 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] [2023-12-19 00:49:18,050 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:49:18,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:49:18,054 INFO L85 PathProgramCache]: Analyzing trace with hash -150309200, now seen corresponding path program 1 times [2023-12-19 00:49:18,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:49:18,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180787186] [2023-12-19 00:49:18,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:49:18,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:49:18,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:49:18,234 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 00:49:18,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:49:18,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180787186] [2023-12-19 00:49:18,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180787186] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:49:18,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:49:18,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 00:49:18,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083179577] [2023-12-19 00:49:18,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:49:18,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 00:49:18,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:49:18,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 00:49:18,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 00:49:18,276 INFO L87 Difference]: Start difference. First operand has 851 states, 848 states have (on average 1.9728773584905661) internal successors, (1673), 850 states have internal predecessors, (1673), 0 states have call successors, (0), 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 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states 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 00:49:18,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:49:18,371 INFO L93 Difference]: Finished difference Result 1657 states and 3259 transitions. [2023-12-19 00:49:18,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 00:49:18,379 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2023-12-19 00:49:18,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:49:18,398 INFO L225 Difference]: With dead ends: 1657 [2023-12-19 00:49:18,399 INFO L226 Difference]: Without dead ends: 847 [2023-12-19 00:49:18,406 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 00:49:18,409 INFO L413 NwaCegarLoop]: 1601 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, 1601 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 00:49:18,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1601 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:49:18,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2023-12-19 00:49:18,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 847. [2023-12-19 00:49:18,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 847 states, 845 states have (on average 1.8958579881656805) internal successors, (1602), 846 states have internal predecessors, (1602), 0 states have call successors, (0), 0 states 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 00:49:18,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 847 states to 847 states and 1602 transitions. [2023-12-19 00:49:18,481 INFO L78 Accepts]: Start accepts. Automaton has 847 states and 1602 transitions. Word has length 23 [2023-12-19 00:49:18,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:49:18,481 INFO L495 AbstractCegarLoop]: Abstraction has 847 states and 1602 transitions. [2023-12-19 00:49:18,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states 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 00:49:18,482 INFO L276 IsEmpty]: Start isEmpty. Operand 847 states and 1602 transitions. [2023-12-19 00:49:18,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-19 00:49:18,483 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:49:18,483 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] [2023-12-19 00:49:18,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-19 00:49:18,483 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:49:18,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:49:18,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1839252942, now seen corresponding path program 1 times [2023-12-19 00:49:18,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:49:18,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981879891] [2023-12-19 00:49:18,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:49:18,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:49:18,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:49:18,760 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 00:49:18,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:49:18,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981879891] [2023-12-19 00:49:18,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981879891] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:49:18,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:49:18,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 00:49:18,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679927686] [2023-12-19 00:49:18,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:49:18,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 00:49:18,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:49:18,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 00:49:18,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 00:49:18,768 INFO L87 Difference]: Start difference. First operand 847 states and 1602 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states 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 00:49:18,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:49:18,874 INFO L93 Difference]: Finished difference Result 899 states and 1684 transitions. [2023-12-19 00:49:18,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 00:49:18,876 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2023-12-19 00:49:18,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:49:18,879 INFO L225 Difference]: With dead ends: 899 [2023-12-19 00:49:18,879 INFO L226 Difference]: Without dead ends: 847 [2023-12-19 00:49:18,879 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 00:49:18,880 INFO L413 NwaCegarLoop]: 1599 mSDtfsCounter, 0 mSDsluCounter, 3154 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4753 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 00:49:18,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4753 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 00:49:18,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2023-12-19 00:49:18,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 847. [2023-12-19 00:49:18,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 847 states, 845 states have (on average 1.8485207100591716) internal successors, (1562), 846 states have internal predecessors, (1562), 0 states have call successors, (0), 0 states 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 00:49:18,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 847 states to 847 states and 1562 transitions. [2023-12-19 00:49:18,903 INFO L78 Accepts]: Start accepts. Automaton has 847 states and 1562 transitions. Word has length 23 [2023-12-19 00:49:18,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:49:18,903 INFO L495 AbstractCegarLoop]: Abstraction has 847 states and 1562 transitions. [2023-12-19 00:49:18,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states 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 00:49:18,903 INFO L276 IsEmpty]: Start isEmpty. Operand 847 states and 1562 transitions. [2023-12-19 00:49:18,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-19 00:49:18,905 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:49:18,905 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, 1, 1, 1, 1, 1, 1] [2023-12-19 00:49:18,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-19 00:49:18,906 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:49:18,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:49:18,906 INFO L85 PathProgramCache]: Analyzing trace with hash 620699521, now seen corresponding path program 1 times [2023-12-19 00:49:18,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:49:18,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392128263] [2023-12-19 00:49:18,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:49:18,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:49:18,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:49:19,095 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 00:49:19,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:49:19,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392128263] [2023-12-19 00:49:19,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392128263] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:49:19,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:49:19,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:49:19,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692674889] [2023-12-19 00:49:19,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:49:19,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 00:49:19,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:49:19,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 00:49:19,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 00:49:19,102 INFO L87 Difference]: Start difference. First operand 847 states and 1562 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 00:49:24,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:49:24,946 INFO L93 Difference]: Finished difference Result 3102 states and 5871 transitions. [2023-12-19 00:49:24,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 00:49:24,946 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 00:49:24,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:49:24,955 INFO L225 Difference]: With dead ends: 3102 [2023-12-19 00:49:24,955 INFO L226 Difference]: Without dead ends: 2349 [2023-12-19 00:49:24,956 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 00:49:24,957 INFO L413 NwaCegarLoop]: 795 mSDtfsCounter, 2440 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5357 mSolverCounterSat, 1153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2440 SdHoareTripleChecker+Valid, 813 SdHoareTripleChecker+Invalid, 6510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1153 IncrementalHoareTripleChecker+Valid, 5357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2023-12-19 00:49:24,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2440 Valid, 813 Invalid, 6510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1153 Valid, 5357 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2023-12-19 00:49:24,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2349 states. [2023-12-19 00:49:25,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2349 to 2349. [2023-12-19 00:49:25,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2349 states, 2347 states have (on average 1.566254793353217) internal successors, (3676), 2348 states have internal predecessors, (3676), 0 states have call successors, (0), 0 states 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 00:49:25,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2349 states to 2349 states and 3676 transitions. [2023-12-19 00:49:25,018 INFO L78 Accepts]: Start accepts. Automaton has 2349 states and 3676 transitions. Word has length 59 [2023-12-19 00:49:25,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:49:25,019 INFO L495 AbstractCegarLoop]: Abstraction has 2349 states and 3676 transitions. [2023-12-19 00:49:25,019 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 00:49:25,019 INFO L276 IsEmpty]: Start isEmpty. Operand 2349 states and 3676 transitions. [2023-12-19 00:49:25,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-19 00:49:25,021 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:49:25,021 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:49:25,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-19 00:49:25,021 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:49:25,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:49:25,022 INFO L85 PathProgramCache]: Analyzing trace with hash -138573370, now seen corresponding path program 1 times [2023-12-19 00:49:25,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:49:25,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242479369] [2023-12-19 00:49:25,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:49:25,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:49:25,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:49:25,238 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 00:49:25,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:49:25,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242479369] [2023-12-19 00:49:25,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242479369] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:49:25,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:49:25,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 00:49:25,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436805994] [2023-12-19 00:49:25,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:49:25,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 00:49:25,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:49:25,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 00:49:25,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-19 00:49:25,240 INFO L87 Difference]: Start difference. First operand 2349 states and 3676 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states 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 00:49:25,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:49:25,526 INFO L93 Difference]: Finished difference Result 2937 states and 4624 transitions. [2023-12-19 00:49:25,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-19 00:49:25,526 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 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 62 [2023-12-19 00:49:25,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:49:25,536 INFO L225 Difference]: With dead ends: 2937 [2023-12-19 00:49:25,536 INFO L226 Difference]: Without dead ends: 2888 [2023-12-19 00:49:25,537 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2023-12-19 00:49:25,543 INFO L413 NwaCegarLoop]: 1553 mSDtfsCounter, 9829 mSDsluCounter, 1486 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9829 SdHoareTripleChecker+Valid, 3039 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 00:49:25,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9829 Valid, 3039 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 00:49:25,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2888 states. [2023-12-19 00:49:25,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2888 to 2396. [2023-12-19 00:49:25,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2396 states, 2394 states have (on average 1.567251461988304) internal successors, (3752), 2395 states have internal predecessors, (3752), 0 states have call successors, (0), 0 states 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 00:49:25,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2396 states to 2396 states and 3752 transitions. [2023-12-19 00:49:25,592 INFO L78 Accepts]: Start accepts. Automaton has 2396 states and 3752 transitions. Word has length 62 [2023-12-19 00:49:25,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:49:25,593 INFO L495 AbstractCegarLoop]: Abstraction has 2396 states and 3752 transitions. [2023-12-19 00:49:25,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states 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 00:49:25,594 INFO L276 IsEmpty]: Start isEmpty. Operand 2396 states and 3752 transitions. [2023-12-19 00:49:25,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-19 00:49:25,600 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:49:25,600 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:49:25,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-19 00:49:25,601 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:49:25,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:49:25,601 INFO L85 PathProgramCache]: Analyzing trace with hash -157853578, now seen corresponding path program 1 times [2023-12-19 00:49:25,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:49:25,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348951289] [2023-12-19 00:49:25,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:49:25,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:49:25,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:49:25,778 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 00:49:25,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:49:25,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348951289] [2023-12-19 00:49:25,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348951289] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:49:25,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:49:25,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:49:25,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094346090] [2023-12-19 00:49:25,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:49:25,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 00:49:25,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:49:25,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 00:49:25,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:49:25,780 INFO L87 Difference]: Start difference. First operand 2396 states and 3752 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 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 00:49:25,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:49:25,822 INFO L93 Difference]: Finished difference Result 2577 states and 4043 transitions. [2023-12-19 00:49:25,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 00:49:25,823 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 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 64 [2023-12-19 00:49:25,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:49:25,832 INFO L225 Difference]: With dead ends: 2577 [2023-12-19 00:49:25,832 INFO L226 Difference]: Without dead ends: 2481 [2023-12-19 00:49:25,833 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 00:49:25,834 INFO L413 NwaCegarLoop]: 1555 mSDtfsCounter, 1490 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1490 SdHoareTripleChecker+Valid, 1626 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 00:49:25,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1490 Valid, 1626 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:49:25,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2481 states. [2023-12-19 00:49:25,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2481 to 2477. [2023-12-19 00:49:25,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2477 states, 2475 states have (on average 1.5676767676767678) internal successors, (3880), 2476 states have internal predecessors, (3880), 0 states have call successors, (0), 0 states 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 00:49:25,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2477 states to 2477 states and 3880 transitions. [2023-12-19 00:49:25,877 INFO L78 Accepts]: Start accepts. Automaton has 2477 states and 3880 transitions. Word has length 64 [2023-12-19 00:49:25,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:49:25,880 INFO L495 AbstractCegarLoop]: Abstraction has 2477 states and 3880 transitions. [2023-12-19 00:49:25,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 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 00:49:25,880 INFO L276 IsEmpty]: Start isEmpty. Operand 2477 states and 3880 transitions. [2023-12-19 00:49:25,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-19 00:49:25,881 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:49:25,882 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:49:25,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-19 00:49:25,882 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:49:25,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:49:25,883 INFO L85 PathProgramCache]: Analyzing trace with hash -155708626, now seen corresponding path program 1 times [2023-12-19 00:49:25,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:49:25,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821520445] [2023-12-19 00:49:25,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:49:25,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:49:25,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:49:26,227 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 00:49:26,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:49:26,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821520445] [2023-12-19 00:49:26,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821520445] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:49:26,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:49:26,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 00:49:26,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078970396] [2023-12-19 00:49:26,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:49:26,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 00:49:26,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:49:26,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 00:49:26,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-12-19 00:49:26,230 INFO L87 Difference]: Start difference. First operand 2477 states and 3880 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 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 00:49:26,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:49:26,461 INFO L93 Difference]: Finished difference Result 2656 states and 4164 transitions. [2023-12-19 00:49:26,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 00:49:26,461 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 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 64 [2023-12-19 00:49:26,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:49:26,469 INFO L225 Difference]: With dead ends: 2656 [2023-12-19 00:49:26,470 INFO L226 Difference]: Without dead ends: 2479 [2023-12-19 00:49:26,470 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2023-12-19 00:49:26,471 INFO L413 NwaCegarLoop]: 1551 mSDtfsCounter, 4519 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4519 SdHoareTripleChecker+Valid, 1924 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 00:49:26,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4519 Valid, 1924 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 00:49:26,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2479 states. [2023-12-19 00:49:26,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2479 to 2477. [2023-12-19 00:49:26,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2477 states, 2475 states have (on average 1.566868686868687) internal successors, (3878), 2476 states have internal predecessors, (3878), 0 states have call successors, (0), 0 states 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 00:49:26,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2477 states to 2477 states and 3878 transitions. [2023-12-19 00:49:26,518 INFO L78 Accepts]: Start accepts. Automaton has 2477 states and 3878 transitions. Word has length 64 [2023-12-19 00:49:26,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:49:26,519 INFO L495 AbstractCegarLoop]: Abstraction has 2477 states and 3878 transitions. [2023-12-19 00:49:26,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 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 00:49:26,519 INFO L276 IsEmpty]: Start isEmpty. Operand 2477 states and 3878 transitions. [2023-12-19 00:49:26,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-19 00:49:26,520 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:49:26,520 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:49:26,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-19 00:49:26,520 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:49:26,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:49:26,521 INFO L85 PathProgramCache]: Analyzing trace with hash -660671842, now seen corresponding path program 1 times [2023-12-19 00:49:26,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:49:26,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759562967] [2023-12-19 00:49:26,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:49:26,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:49:26,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:49:26,680 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 00:49:26,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:49:26,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759562967] [2023-12-19 00:49:26,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759562967] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:49:26,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:49:26,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 00:49:26,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652966789] [2023-12-19 00:49:26,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:49:26,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 00:49:26,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:49:26,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 00:49:26,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 00:49:26,682 INFO L87 Difference]: Start difference. First operand 2477 states and 3878 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states 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 00:49:26,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:49:26,724 INFO L93 Difference]: Finished difference Result 2485 states and 3887 transitions. [2023-12-19 00:49:26,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 00:49:26,724 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2023-12-19 00:49:26,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:49:26,733 INFO L225 Difference]: With dead ends: 2485 [2023-12-19 00:49:26,733 INFO L226 Difference]: Without dead ends: 2483 [2023-12-19 00:49:26,733 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 00:49:26,734 INFO L413 NwaCegarLoop]: 1558 mSDtfsCounter, 1 mSDsluCounter, 3108 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4666 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 00:49:26,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4666 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:49:26,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2483 states. [2023-12-19 00:49:26,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2483 to 2481. [2023-12-19 00:49:26,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2481 states, 2479 states have (on average 1.5655506252521179) internal successors, (3881), 2480 states have internal predecessors, (3881), 0 states have call successors, (0), 0 states 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 00:49:26,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2481 states to 2481 states and 3881 transitions. [2023-12-19 00:49:26,781 INFO L78 Accepts]: Start accepts. Automaton has 2481 states and 3881 transitions. Word has length 65 [2023-12-19 00:49:26,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:49:26,781 INFO L495 AbstractCegarLoop]: Abstraction has 2481 states and 3881 transitions. [2023-12-19 00:49:26,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states 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 00:49:26,782 INFO L276 IsEmpty]: Start isEmpty. Operand 2481 states and 3881 transitions. [2023-12-19 00:49:26,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-19 00:49:26,782 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:49:26,782 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:49:26,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-19 00:49:26,783 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:49:26,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:49:26,783 INFO L85 PathProgramCache]: Analyzing trace with hash -347652018, now seen corresponding path program 1 times [2023-12-19 00:49:26,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:49:26,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330129155] [2023-12-19 00:49:26,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:49:26,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:49:26,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:49:26,824 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 00:49:26,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:49:26,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330129155] [2023-12-19 00:49:26,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330129155] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:49:26,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:49:26,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:49:26,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274445502] [2023-12-19 00:49:26,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:49:26,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 00:49:26,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:49:26,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 00:49:26,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:49:26,826 INFO L87 Difference]: Start difference. First operand 2481 states and 3881 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 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 00:49:26,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:49:26,863 INFO L93 Difference]: Finished difference Result 2827 states and 4421 transitions. [2023-12-19 00:49:26,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 00:49:26,863 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 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 66 [2023-12-19 00:49:26,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:49:26,872 INFO L225 Difference]: With dead ends: 2827 [2023-12-19 00:49:26,872 INFO L226 Difference]: Without dead ends: 2646 [2023-12-19 00:49:26,873 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 00:49:26,874 INFO L413 NwaCegarLoop]: 1604 mSDtfsCounter, 1503 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1503 SdHoareTripleChecker+Valid, 1691 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 00:49:26,874 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1503 Valid, 1691 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:49:26,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2646 states. [2023-12-19 00:49:26,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2646 to 2644. [2023-12-19 00:49:26,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2644 states, 2642 states have (on average 1.5639666919000756) internal successors, (4132), 2643 states have internal predecessors, (4132), 0 states have call successors, (0), 0 states 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 00:49:26,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2644 states to 2644 states and 4132 transitions. [2023-12-19 00:49:26,926 INFO L78 Accepts]: Start accepts. Automaton has 2644 states and 4132 transitions. Word has length 66 [2023-12-19 00:49:26,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:49:26,926 INFO L495 AbstractCegarLoop]: Abstraction has 2644 states and 4132 transitions. [2023-12-19 00:49:26,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 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 00:49:26,926 INFO L276 IsEmpty]: Start isEmpty. Operand 2644 states and 4132 transitions. [2023-12-19 00:49:26,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-19 00:49:26,927 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:49:26,927 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:49:26,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-19 00:49:26,927 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:49:26,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:49:26,928 INFO L85 PathProgramCache]: Analyzing trace with hash -307708082, now seen corresponding path program 1 times [2023-12-19 00:49:26,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:49:26,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654924209] [2023-12-19 00:49:26,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:49:26,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:49:26,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:49:26,972 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 00:49:26,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:49:26,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654924209] [2023-12-19 00:49:26,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654924209] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:49:26,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:49:26,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:49:26,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465742970] [2023-12-19 00:49:26,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:49:26,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 00:49:26,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:49:26,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 00:49:26,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:49:26,974 INFO L87 Difference]: Start difference. First operand 2644 states and 4132 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 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 00:49:27,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:49:27,014 INFO L93 Difference]: Finished difference Result 3300 states and 5146 transitions. [2023-12-19 00:49:27,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 00:49:27,015 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 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 66 [2023-12-19 00:49:27,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:49:27,024 INFO L225 Difference]: With dead ends: 3300 [2023-12-19 00:49:27,027 INFO L226 Difference]: Without dead ends: 2956 [2023-12-19 00:49:27,029 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 00:49:27,032 INFO L413 NwaCegarLoop]: 1602 mSDtfsCounter, 1501 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1501 SdHoareTripleChecker+Valid, 1693 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 00:49:27,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1501 Valid, 1693 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:49:27,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2956 states. [2023-12-19 00:49:27,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2956 to 2954. [2023-12-19 00:49:27,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2954 states, 2952 states have (on average 1.5589430894308942) internal successors, (4602), 2953 states have internal predecessors, (4602), 0 states have call successors, (0), 0 states 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 00:49:27,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2954 states to 2954 states and 4602 transitions. [2023-12-19 00:49:27,094 INFO L78 Accepts]: Start accepts. Automaton has 2954 states and 4602 transitions. Word has length 66 [2023-12-19 00:49:27,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:49:27,094 INFO L495 AbstractCegarLoop]: Abstraction has 2954 states and 4602 transitions. [2023-12-19 00:49:27,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 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 00:49:27,094 INFO L276 IsEmpty]: Start isEmpty. Operand 2954 states and 4602 transitions. [2023-12-19 00:49:27,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-19 00:49:27,098 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:49:27,098 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:49:27,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-19 00:49:27,099 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:49:27,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:49:27,102 INFO L85 PathProgramCache]: Analyzing trace with hash -933364146, now seen corresponding path program 1 times [2023-12-19 00:49:27,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:49:27,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532559543] [2023-12-19 00:49:27,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:49:27,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:49:27,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:49:27,146 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 00:49:27,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:49:27,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532559543] [2023-12-19 00:49:27,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532559543] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:49:27,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:49:27,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:49:27,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932667931] [2023-12-19 00:49:27,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:49:27,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 00:49:27,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:49:27,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 00:49:27,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:49:27,148 INFO L87 Difference]: Start difference. First operand 2954 states and 4602 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 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 00:49:27,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:49:27,202 INFO L93 Difference]: Finished difference Result 4198 states and 6500 transitions. [2023-12-19 00:49:27,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 00:49:27,202 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 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 66 [2023-12-19 00:49:27,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:49:27,214 INFO L225 Difference]: With dead ends: 4198 [2023-12-19 00:49:27,214 INFO L226 Difference]: Without dead ends: 3544 [2023-12-19 00:49:27,216 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 00:49:27,216 INFO L413 NwaCegarLoop]: 1600 mSDtfsCounter, 1499 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1499 SdHoareTripleChecker+Valid, 1695 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 00:49:27,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1499 Valid, 1695 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:49:27,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3544 states. [2023-12-19 00:49:27,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3544 to 3542. [2023-12-19 00:49:27,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3542 states, 3540 states have (on average 1.547457627118644) internal successors, (5478), 3541 states have internal predecessors, (5478), 0 states have call successors, (0), 0 states 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 00:49:27,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3542 states to 3542 states and 5478 transitions. [2023-12-19 00:49:27,296 INFO L78 Accepts]: Start accepts. Automaton has 3542 states and 5478 transitions. Word has length 66 [2023-12-19 00:49:27,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:49:27,297 INFO L495 AbstractCegarLoop]: Abstraction has 3542 states and 5478 transitions. [2023-12-19 00:49:27,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 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 00:49:27,297 INFO L276 IsEmpty]: Start isEmpty. Operand 3542 states and 5478 transitions. [2023-12-19 00:49:27,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-19 00:49:27,298 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:49:27,298 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:49:27,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-19 00:49:27,298 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:49:27,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:49:27,299 INFO L85 PathProgramCache]: Analyzing trace with hash -44630706, now seen corresponding path program 1 times [2023-12-19 00:49:27,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:49:27,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040002758] [2023-12-19 00:49:27,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:49:27,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:49:27,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:49:27,339 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 00:49:27,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:49:27,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040002758] [2023-12-19 00:49:27,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040002758] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:49:27,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:49:27,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:49:27,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956131402] [2023-12-19 00:49:27,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:49:27,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 00:49:27,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:49:27,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 00:49:27,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:49:27,341 INFO L87 Difference]: Start difference. First operand 3542 states and 5478 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 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 00:49:27,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:49:27,413 INFO L93 Difference]: Finished difference Result 5898 states and 9016 transitions. [2023-12-19 00:49:27,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 00:49:27,414 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 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 66 [2023-12-19 00:49:27,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:49:27,424 INFO L225 Difference]: With dead ends: 5898 [2023-12-19 00:49:27,424 INFO L226 Difference]: Without dead ends: 4656 [2023-12-19 00:49:27,427 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 00:49:27,427 INFO L413 NwaCegarLoop]: 1598 mSDtfsCounter, 1497 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1497 SdHoareTripleChecker+Valid, 1697 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 00:49:27,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1497 Valid, 1697 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:49:27,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4656 states. [2023-12-19 00:49:27,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4656 to 4654. [2023-12-19 00:49:27,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4654 states, 4652 states have (on average 1.5266552020636286) internal successors, (7102), 4653 states have internal predecessors, (7102), 0 states have call successors, (0), 0 states 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 00:49:27,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4654 states to 4654 states and 7102 transitions. [2023-12-19 00:49:27,542 INFO L78 Accepts]: Start accepts. Automaton has 4654 states and 7102 transitions. Word has length 66 [2023-12-19 00:49:27,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:49:27,542 INFO L495 AbstractCegarLoop]: Abstraction has 4654 states and 7102 transitions. [2023-12-19 00:49:27,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 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 00:49:27,543 INFO L276 IsEmpty]: Start isEmpty. Operand 4654 states and 7102 transitions. [2023-12-19 00:49:27,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-19 00:49:27,543 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:49:27,543 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:49:27,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-19 00:49:27,544 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:49:27,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:49:27,544 INFO L85 PathProgramCache]: Analyzing trace with hash -79068850, now seen corresponding path program 1 times [2023-12-19 00:49:27,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:49:27,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868626644] [2023-12-19 00:49:27,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:49:27,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:49:27,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:49:27,584 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 00:49:27,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:49:27,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868626644] [2023-12-19 00:49:27,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868626644] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:49:27,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:49:27,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:49:27,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739463161] [2023-12-19 00:49:27,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:49:27,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 00:49:27,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:49:27,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 00:49:27,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:49:27,586 INFO L87 Difference]: Start difference. First operand 4654 states and 7102 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 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 00:49:27,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:49:27,770 INFO L93 Difference]: Finished difference Result 9106 states and 13664 transitions. [2023-12-19 00:49:27,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 00:49:27,777 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 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 66 [2023-12-19 00:49:27,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:49:27,797 INFO L225 Difference]: With dead ends: 9106 [2023-12-19 00:49:27,797 INFO L226 Difference]: Without dead ends: 6752 [2023-12-19 00:49:27,802 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 00:49:27,803 INFO L413 NwaCegarLoop]: 1614 mSDtfsCounter, 1505 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1505 SdHoareTripleChecker+Valid, 1697 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 00:49:27,803 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1505 Valid, 1697 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:49:27,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6752 states. [2023-12-19 00:49:27,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6752 to 6750. [2023-12-19 00:49:27,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6750 states, 6748 states have (on average 1.495850622406639) internal successors, (10094), 6749 states have internal predecessors, (10094), 0 states have call successors, (0), 0 states 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 00:49:27,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6750 states to 6750 states and 10094 transitions. [2023-12-19 00:49:27,983 INFO L78 Accepts]: Start accepts. Automaton has 6750 states and 10094 transitions. Word has length 66 [2023-12-19 00:49:27,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:49:27,983 INFO L495 AbstractCegarLoop]: Abstraction has 6750 states and 10094 transitions. [2023-12-19 00:49:27,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 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 00:49:27,984 INFO L276 IsEmpty]: Start isEmpty. Operand 6750 states and 10094 transitions. [2023-12-19 00:49:27,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-19 00:49:27,984 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:49:27,984 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:49:27,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-19 00:49:27,985 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:49:27,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:49:27,985 INFO L85 PathProgramCache]: Analyzing trace with hash 1522611955, now seen corresponding path program 1 times [2023-12-19 00:49:27,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:49:27,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359563597] [2023-12-19 00:49:27,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:49:27,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:49:27,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:49:28,025 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 00:49:28,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:49:28,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359563597] [2023-12-19 00:49:28,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359563597] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:49:28,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:49:28,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:49:28,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353677198] [2023-12-19 00:49:28,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:49:28,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 00:49:28,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:49:28,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 00:49:28,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:49:28,027 INFO L87 Difference]: Start difference. First operand 6750 states and 10094 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 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 00:49:28,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:49:28,186 INFO L93 Difference]: Finished difference Result 11365 states and 16948 transitions. [2023-12-19 00:49:28,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 00:49:28,187 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 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 68 [2023-12-19 00:49:28,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:49:28,203 INFO L225 Difference]: With dead ends: 11365 [2023-12-19 00:49:28,203 INFO L226 Difference]: Without dead ends: 8866 [2023-12-19 00:49:28,208 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 00:49:28,208 INFO L413 NwaCegarLoop]: 1619 mSDtfsCounter, 1504 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1504 SdHoareTripleChecker+Valid, 1698 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 00:49:28,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1504 Valid, 1698 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:49:28,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8866 states. [2023-12-19 00:49:28,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8866 to 8864. [2023-12-19 00:49:28,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8864 states, 8862 states have (on average 1.4822839088241933) internal successors, (13136), 8863 states have internal predecessors, (13136), 0 states have call successors, (0), 0 states 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 00:49:28,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8864 states to 8864 states and 13136 transitions. [2023-12-19 00:49:28,445 INFO L78 Accepts]: Start accepts. Automaton has 8864 states and 13136 transitions. Word has length 68 [2023-12-19 00:49:28,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:49:28,445 INFO L495 AbstractCegarLoop]: Abstraction has 8864 states and 13136 transitions. [2023-12-19 00:49:28,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 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 00:49:28,445 INFO L276 IsEmpty]: Start isEmpty. Operand 8864 states and 13136 transitions. [2023-12-19 00:49:28,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-19 00:49:28,448 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:49:28,448 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:49:28,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-19 00:49:28,448 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:49:28,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:49:28,449 INFO L85 PathProgramCache]: Analyzing trace with hash 510998183, now seen corresponding path program 1 times [2023-12-19 00:49:28,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:49:28,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88730399] [2023-12-19 00:49:28,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:49:28,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:49:28,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:49:28,598 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-19 00:49:28,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:49:28,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88730399] [2023-12-19 00:49:28,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88730399] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:49:28,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:49:28,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 00:49:28,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161636103] [2023-12-19 00:49:28,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:49:28,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 00:49:28,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:49:28,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 00:49:28,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-19 00:49:28,600 INFO L87 Difference]: Start difference. First operand 8864 states and 13136 transitions. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states 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 00:49:29,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:49:29,643 INFO L93 Difference]: Finished difference Result 49582 states and 72247 transitions. [2023-12-19 00:49:29,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 00:49:29,644 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 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 00:49:29,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:49:29,729 INFO L225 Difference]: With dead ends: 49582 [2023-12-19 00:49:29,729 INFO L226 Difference]: Without dead ends: 43020 [2023-12-19 00:49:29,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-19 00:49:29,751 INFO L413 NwaCegarLoop]: 1634 mSDtfsCounter, 8086 mSDsluCounter, 2232 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8086 SdHoareTripleChecker+Valid, 3866 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 00:49:29,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8086 Valid, 3866 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 00:49:29,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43020 states. [2023-12-19 00:49:30,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43020 to 15424. [2023-12-19 00:49:30,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15424 states, 15422 states have (on average 1.4638827648813384) internal successors, (22576), 15423 states have internal predecessors, (22576), 0 states have call successors, (0), 0 states 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 00:49:30,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15424 states to 15424 states and 22576 transitions. [2023-12-19 00:49:30,634 INFO L78 Accepts]: Start accepts. Automaton has 15424 states and 22576 transitions. Word has length 86 [2023-12-19 00:49:30,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:49:30,634 INFO L495 AbstractCegarLoop]: Abstraction has 15424 states and 22576 transitions. [2023-12-19 00:49:30,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states 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 00:49:30,635 INFO L276 IsEmpty]: Start isEmpty. Operand 15424 states and 22576 transitions. [2023-12-19 00:49:30,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-19 00:49:30,637 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:49:30,638 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:49:30,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-19 00:49:30,638 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:49:30,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:49:30,638 INFO L85 PathProgramCache]: Analyzing trace with hash 550942119, now seen corresponding path program 1 times [2023-12-19 00:49:30,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:49:30,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107570789] [2023-12-19 00:49:30,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:49:30,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:49:30,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:49:30,805 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-19 00:49:30,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:49:30,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107570789] [2023-12-19 00:49:30,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107570789] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:49:30,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:49:30,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 00:49:30,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690462706] [2023-12-19 00:49:30,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:49:30,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 00:49:30,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:49:30,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 00:49:30,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-19 00:49:30,807 INFO L87 Difference]: Start difference. First operand 15424 states and 22576 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:49:32,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:49:32,141 INFO L93 Difference]: Finished difference Result 56142 states and 81687 transitions. [2023-12-19 00:49:32,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 00:49:32,142 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2023-12-19 00:49:32,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:49:32,233 INFO L225 Difference]: With dead ends: 56142 [2023-12-19 00:49:32,233 INFO L226 Difference]: Without dead ends: 49580 [2023-12-19 00:49:32,253 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-19 00:49:32,253 INFO L413 NwaCegarLoop]: 1631 mSDtfsCounter, 8138 mSDsluCounter, 2135 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8138 SdHoareTripleChecker+Valid, 3766 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 00:49:32,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8138 Valid, 3766 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 00:49:32,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49580 states. [2023-12-19 00:49:33,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49580 to 25280. [2023-12-19 00:49:33,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25280 states, 25278 states have (on average 1.4501147242661603) internal successors, (36656), 25279 states have internal predecessors, (36656), 0 states have call successors, (0), 0 states 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 00:49:33,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25280 states to 25280 states and 36656 transitions. [2023-12-19 00:49:33,282 INFO L78 Accepts]: Start accepts. Automaton has 25280 states and 36656 transitions. Word has length 86 [2023-12-19 00:49:33,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:49:33,283 INFO L495 AbstractCegarLoop]: Abstraction has 25280 states and 36656 transitions. [2023-12-19 00:49:33,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:49:33,283 INFO L276 IsEmpty]: Start isEmpty. Operand 25280 states and 36656 transitions. [2023-12-19 00:49:33,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-19 00:49:33,286 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:49:33,286 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:49:33,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-19 00:49:33,287 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:49:33,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:49:33,287 INFO L85 PathProgramCache]: Analyzing trace with hash -74713945, now seen corresponding path program 1 times [2023-12-19 00:49:33,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:49:33,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960226827] [2023-12-19 00:49:33,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:49:33,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:49:33,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:49:33,446 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-19 00:49:33,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:49:33,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960226827] [2023-12-19 00:49:33,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960226827] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:49:33,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:49:33,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 00:49:33,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880464553] [2023-12-19 00:49:33,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:49:33,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 00:49:33,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:49:33,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 00:49:33,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-19 00:49:33,450 INFO L87 Difference]: Start difference. First operand 25280 states and 36656 transitions. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:49:34,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:49:34,973 INFO L93 Difference]: Finished difference Result 62702 states and 91127 transitions. [2023-12-19 00:49:34,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 00:49:34,974 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2023-12-19 00:49:34,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:49:35,088 INFO L225 Difference]: With dead ends: 62702 [2023-12-19 00:49:35,088 INFO L226 Difference]: Without dead ends: 56140 [2023-12-19 00:49:35,108 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-19 00:49:35,108 INFO L413 NwaCegarLoop]: 1628 mSDtfsCounter, 8187 mSDsluCounter, 2140 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8187 SdHoareTripleChecker+Valid, 3768 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 00:49:35,108 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8187 Valid, 3768 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 00:49:35,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56140 states. [2023-12-19 00:49:36,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56140 to 31840. [2023-12-19 00:49:36,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31840 states, 31838 states have (on average 1.4478296375400466) internal successors, (46096), 31839 states have internal predecessors, (46096), 0 states have call successors, (0), 0 states 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 00:49:36,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31840 states to 31840 states and 46096 transitions. [2023-12-19 00:49:36,218 INFO L78 Accepts]: Start accepts. Automaton has 31840 states and 46096 transitions. Word has length 86 [2023-12-19 00:49:36,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:49:36,218 INFO L495 AbstractCegarLoop]: Abstraction has 31840 states and 46096 transitions. [2023-12-19 00:49:36,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:49:36,218 INFO L276 IsEmpty]: Start isEmpty. Operand 31840 states and 46096 transitions. [2023-12-19 00:49:36,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-19 00:49:36,225 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:49:36,225 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:49:36,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-19 00:49:36,226 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:49:36,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:49:36,226 INFO L85 PathProgramCache]: Analyzing trace with hash 814019495, now seen corresponding path program 1 times [2023-12-19 00:49:36,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:49:36,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303757938] [2023-12-19 00:49:36,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:49:36,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:49:36,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:49:36,523 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-19 00:49:36,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:49:36,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303757938] [2023-12-19 00:49:36,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303757938] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:49:36,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:49:36,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 00:49:36,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935416895] [2023-12-19 00:49:36,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:49:36,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 00:49:36,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:49:36,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 00:49:36,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-19 00:49:36,526 INFO L87 Difference]: Start difference. First operand 31840 states and 46096 transitions. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 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 00:49:37,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:49:37,845 INFO L93 Difference]: Finished difference Result 69262 states and 100567 transitions. [2023-12-19 00:49:37,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 00:49:37,846 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 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 86 [2023-12-19 00:49:37,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:49:37,920 INFO L225 Difference]: With dead ends: 69262 [2023-12-19 00:49:37,921 INFO L226 Difference]: Without dead ends: 62700 [2023-12-19 00:49:37,938 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-19 00:49:37,938 INFO L413 NwaCegarLoop]: 1633 mSDtfsCounter, 8090 mSDsluCounter, 2243 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8090 SdHoareTripleChecker+Valid, 3876 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 00:49:37,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8090 Valid, 3876 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 00:49:37,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62700 states. [2023-12-19 00:49:38,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62700 to 38400. [2023-12-19 00:49:38,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38400 states, 38398 states have (on average 1.446325329444242) internal successors, (55536), 38399 states have internal predecessors, (55536), 0 states have call successors, (0), 0 states 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 00:49:38,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38400 states to 38400 states and 55536 transitions. [2023-12-19 00:49:38,981 INFO L78 Accepts]: Start accepts. Automaton has 38400 states and 55536 transitions. Word has length 86 [2023-12-19 00:49:38,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:49:38,982 INFO L495 AbstractCegarLoop]: Abstraction has 38400 states and 55536 transitions. [2023-12-19 00:49:38,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 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 00:49:38,982 INFO L276 IsEmpty]: Start isEmpty. Operand 38400 states and 55536 transitions. [2023-12-19 00:49:38,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-19 00:49:38,985 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:49:38,986 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:49:38,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-19 00:49:38,986 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:49:38,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:49:38,987 INFO L85 PathProgramCache]: Analyzing trace with hash 779581351, now seen corresponding path program 1 times [2023-12-19 00:49:38,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:49:38,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454943605] [2023-12-19 00:49:38,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:49:38,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:49:39,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:49:39,143 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-19 00:49:39,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:49:39,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454943605] [2023-12-19 00:49:39,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454943605] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:49:39,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:49:39,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 00:49:39,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375199414] [2023-12-19 00:49:39,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:49:39,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 00:49:39,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:49:39,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 00:49:39,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-19 00:49:39,145 INFO L87 Difference]: Start difference. First operand 38400 states and 55536 transitions. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states 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 00:49:40,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:49:40,850 INFO L93 Difference]: Finished difference Result 75822 states and 110007 transitions. [2023-12-19 00:49:40,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 00:49:40,852 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 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 00:49:40,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:49:40,926 INFO L225 Difference]: With dead ends: 75822 [2023-12-19 00:49:40,926 INFO L226 Difference]: Without dead ends: 69260 [2023-12-19 00:49:40,943 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-19 00:49:40,944 INFO L413 NwaCegarLoop]: 1634 mSDtfsCounter, 8030 mSDsluCounter, 2372 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8030 SdHoareTripleChecker+Valid, 4006 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 00:49:40,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8030 Valid, 4006 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 00:49:40,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69260 states. [2023-12-19 00:49:42,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69260 to 44960. [2023-12-19 00:49:42,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44960 states, 44958 states have (on average 1.4452600204635437) internal successors, (64976), 44959 states have internal predecessors, (64976), 0 states have call successors, (0), 0 states 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 00:49:42,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44960 states to 44960 states and 64976 transitions. [2023-12-19 00:49:42,172 INFO L78 Accepts]: Start accepts. Automaton has 44960 states and 64976 transitions. Word has length 86 [2023-12-19 00:49:42,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:49:42,172 INFO L495 AbstractCegarLoop]: Abstraction has 44960 states and 64976 transitions. [2023-12-19 00:49:42,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states 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 00:49:42,172 INFO L276 IsEmpty]: Start isEmpty. Operand 44960 states and 64976 transitions. [2023-12-19 00:49:42,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-19 00:49:42,176 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:49:42,177 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:49:42,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-19 00:49:42,177 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:49:42,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:49:42,178 INFO L85 PathProgramCache]: Analyzing trace with hash 1312295887, now seen corresponding path program 1 times [2023-12-19 00:49:42,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:49:42,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468874573] [2023-12-19 00:49:42,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:49:42,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:49:42,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:49:42,257 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:49:42,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:49:42,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468874573] [2023-12-19 00:49:42,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468874573] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:49:42,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:49:42,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:49:42,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749639931] [2023-12-19 00:49:42,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:49:42,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 00:49:42,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:49:42,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 00:49:42,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:49:42,260 INFO L87 Difference]: Start difference. First operand 44960 states and 64976 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 00:49:42,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:49:42,854 INFO L93 Difference]: Finished difference Result 74937 states and 108680 transitions. [2023-12-19 00:49:42,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 00:49:42,855 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 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 00:49:42,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:49:43,106 INFO L225 Difference]: With dead ends: 74937 [2023-12-19 00:49:43,107 INFO L226 Difference]: Without dead ends: 32279 [2023-12-19 00:49:43,126 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 00:49:43,126 INFO L413 NwaCegarLoop]: 1607 mSDtfsCounter, 58 mSDsluCounter, 1545 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 3152 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 00:49:43,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 3152 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:49:43,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32279 states. [2023-12-19 00:49:43,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32279 to 32277. [2023-12-19 00:49:43,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32277 states, 32275 states have (on average 1.4526723470178156) internal successors, (46885), 32276 states have internal predecessors, (46885), 0 states have call successors, (0), 0 states 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 00:49:44,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32277 states to 32277 states and 46885 transitions. [2023-12-19 00:49:44,020 INFO L78 Accepts]: Start accepts. Automaton has 32277 states and 46885 transitions. Word has length 88 [2023-12-19 00:49:44,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:49:44,021 INFO L495 AbstractCegarLoop]: Abstraction has 32277 states and 46885 transitions. [2023-12-19 00:49:44,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 00:49:44,021 INFO L276 IsEmpty]: Start isEmpty. Operand 32277 states and 46885 transitions. [2023-12-19 00:49:44,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-19 00:49:44,024 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:49:44,024 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:49:44,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-19 00:49:44,024 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:49:44,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:49:44,024 INFO L85 PathProgramCache]: Analyzing trace with hash 2051734284, now seen corresponding path program 1 times [2023-12-19 00:49:44,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:49:44,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847198341] [2023-12-19 00:49:44,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:49:44,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:49:44,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:49:44,170 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 00:49:44,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:49:44,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847198341] [2023-12-19 00:49:44,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847198341] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:49:44,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:49:44,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 00:49:44,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975340339] [2023-12-19 00:49:44,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:49:44,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 00:49:44,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:49:44,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 00:49:44,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-19 00:49:44,172 INFO L87 Difference]: Start difference. First operand 32277 states and 46885 transitions. Second operand has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 0 states 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 00:49:45,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:49:45,504 INFO L93 Difference]: Finished difference Result 59939 states and 87212 transitions. [2023-12-19 00:49:45,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 00:49:45,505 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 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 00:49:45,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:49:45,559 INFO L225 Difference]: With dead ends: 59939 [2023-12-19 00:49:45,559 INFO L226 Difference]: Without dead ends: 55329 [2023-12-19 00:49:45,566 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-19 00:49:45,567 INFO L413 NwaCegarLoop]: 1625 mSDtfsCounter, 8038 mSDsluCounter, 2341 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8038 SdHoareTripleChecker+Valid, 3966 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 00:49:45,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8038 Valid, 3966 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 00:49:45,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55329 states. [2023-12-19 00:49:46,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55329 to 36885. [2023-12-19 00:49:46,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36885 states, 36883 states have (on average 1.4516443890139088) internal successors, (53541), 36884 states have internal predecessors, (53541), 0 states have call successors, (0), 0 states 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 00:49:46,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36885 states to 36885 states and 53541 transitions. [2023-12-19 00:49:46,562 INFO L78 Accepts]: Start accepts. Automaton has 36885 states and 53541 transitions. Word has length 88 [2023-12-19 00:49:46,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:49:46,562 INFO L495 AbstractCegarLoop]: Abstraction has 36885 states and 53541 transitions. [2023-12-19 00:49:46,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 0 states 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 00:49:46,563 INFO L276 IsEmpty]: Start isEmpty. Operand 36885 states and 53541 transitions. [2023-12-19 00:49:46,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-19 00:49:46,565 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:49:46,565 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:49:46,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-19 00:49:46,566 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:49:46,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:49:46,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1778271343, now seen corresponding path program 1 times [2023-12-19 00:49:46,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:49:46,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374138306] [2023-12-19 00:49:46,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:49:46,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:49:46,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:49:46,642 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:49:46,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:49:46,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374138306] [2023-12-19 00:49:46,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374138306] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:49:46,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:49:46,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:49:46,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337840636] [2023-12-19 00:49:46,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:49:46,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 00:49:46,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:49:46,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 00:49:46,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:49:46,644 INFO L87 Difference]: Start difference. First operand 36885 states and 53541 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states 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 00:49:47,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:49:47,201 INFO L93 Difference]: Finished difference Result 54169 states and 78503 transitions. [2023-12-19 00:49:47,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 00:49:47,201 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 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 89 [2023-12-19 00:49:47,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:49:47,218 INFO L225 Difference]: With dead ends: 54169 [2023-12-19 00:49:47,218 INFO L226 Difference]: Without dead ends: 19607 [2023-12-19 00:49:47,236 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 00:49:47,237 INFO L413 NwaCegarLoop]: 1600 mSDtfsCounter, 53 mSDsluCounter, 1537 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 3137 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 00:49:47,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 3137 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:49:47,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19607 states. [2023-12-19 00:49:47,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19607 to 19605. [2023-12-19 00:49:47,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19605 states, 19603 states have (on average 1.4457480997806458) internal successors, (28341), 19604 states have internal predecessors, (28341), 0 states have call successors, (0), 0 states 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 00:49:47,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19605 states to 19605 states and 28341 transitions. [2023-12-19 00:49:47,769 INFO L78 Accepts]: Start accepts. Automaton has 19605 states and 28341 transitions. Word has length 89 [2023-12-19 00:49:47,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:49:47,769 INFO L495 AbstractCegarLoop]: Abstraction has 19605 states and 28341 transitions. [2023-12-19 00:49:47,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states 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 00:49:47,770 INFO L276 IsEmpty]: Start isEmpty. Operand 19605 states and 28341 transitions. [2023-12-19 00:49:47,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-19 00:49:47,772 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:49:47,772 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:49:47,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-19 00:49:47,772 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:49:47,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:49:47,772 INFO L85 PathProgramCache]: Analyzing trace with hash -259328547, now seen corresponding path program 1 times [2023-12-19 00:49:47,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:49:47,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511410176] [2023-12-19 00:49:47,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:49:47,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:49:47,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:49:47,846 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:49:47,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:49:47,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511410176] [2023-12-19 00:49:47,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511410176] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:49:47,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:49:47,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:49:47,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467304441] [2023-12-19 00:49:47,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:49:47,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 00:49:47,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:49:47,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 00:49:47,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:49:47,848 INFO L87 Difference]: Start difference. First operand 19605 states and 28341 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states 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 00:49:48,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:49:48,192 INFO L93 Difference]: Finished difference Result 28249 states and 40703 transitions. [2023-12-19 00:49:48,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 00:49:48,194 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2023-12-19 00:49:48,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:49:48,205 INFO L225 Difference]: With dead ends: 28249 [2023-12-19 00:49:48,205 INFO L226 Difference]: Without dead ends: 10967 [2023-12-19 00:49:48,213 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 00:49:48,214 INFO L413 NwaCegarLoop]: 1593 mSDtfsCounter, 50 mSDsluCounter, 1529 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 3122 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 00:49:48,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 3122 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:49:48,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10967 states. [2023-12-19 00:49:48,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10967 to 10965. [2023-12-19 00:49:48,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10965 states, 10963 states have (on average 1.4467755176502781) internal successors, (15861), 10964 states have internal predecessors, (15861), 0 states have call successors, (0), 0 states 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 00:49:48,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10965 states to 10965 states and 15861 transitions. [2023-12-19 00:49:48,430 INFO L78 Accepts]: Start accepts. Automaton has 10965 states and 15861 transitions. Word has length 91 [2023-12-19 00:49:48,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:49:48,430 INFO L495 AbstractCegarLoop]: Abstraction has 10965 states and 15861 transitions. [2023-12-19 00:49:48,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states 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 00:49:48,430 INFO L276 IsEmpty]: Start isEmpty. Operand 10965 states and 15861 transitions. [2023-12-19 00:49:48,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-19 00:49:48,432 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:49:48,432 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:49:48,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-19 00:49:48,432 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:49:48,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:49:48,432 INFO L85 PathProgramCache]: Analyzing trace with hash 124348619, now seen corresponding path program 1 times [2023-12-19 00:49:48,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:49:48,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221958663] [2023-12-19 00:49:48,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:49:48,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:49:48,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:49:48,514 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:49:48,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:49:48,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221958663] [2023-12-19 00:49:48,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221958663] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:49:48,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:49:48,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:49:48,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788086837] [2023-12-19 00:49:48,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:49:48,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 00:49:48,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:49:48,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 00:49:48,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:49:48,516 INFO L87 Difference]: Start difference. First operand 10965 states and 15861 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states 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 00:49:48,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:49:48,670 INFO L93 Difference]: Finished difference Result 15289 states and 21983 transitions. [2023-12-19 00:49:48,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 00:49:48,671 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2023-12-19 00:49:48,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:49:48,678 INFO L225 Difference]: With dead ends: 15289 [2023-12-19 00:49:48,678 INFO L226 Difference]: Without dead ends: 6647 [2023-12-19 00:49:48,685 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 00:49:48,685 INFO L413 NwaCegarLoop]: 1586 mSDtfsCounter, 47 mSDsluCounter, 1521 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 3107 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 00:49:48,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 3107 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:49:48,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6647 states. [2023-12-19 00:49:48,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6647 to 6645. [2023-12-19 00:49:48,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6645 states, 6643 states have (on average 1.4573234984193888) internal successors, (9681), 6644 states have internal predecessors, (9681), 0 states have call successors, (0), 0 states 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 00:49:48,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6645 states to 6645 states and 9681 transitions. [2023-12-19 00:49:48,844 INFO L78 Accepts]: Start accepts. Automaton has 6645 states and 9681 transitions. Word has length 93 [2023-12-19 00:49:48,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:49:48,844 INFO L495 AbstractCegarLoop]: Abstraction has 6645 states and 9681 transitions. [2023-12-19 00:49:48,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states 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 00:49:48,845 INFO L276 IsEmpty]: Start isEmpty. Operand 6645 states and 9681 transitions. [2023-12-19 00:49:48,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-19 00:49:48,846 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:49:48,846 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:49:48,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-19 00:49:48,848 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:49:48,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:49:48,848 INFO L85 PathProgramCache]: Analyzing trace with hash 235175225, now seen corresponding path program 1 times [2023-12-19 00:49:48,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:49:48,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386495128] [2023-12-19 00:49:48,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:49:48,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:49:48,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:49:48,935 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:49:48,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:49:48,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386495128] [2023-12-19 00:49:48,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386495128] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:49:48,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:49:48,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:49:48,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811757039] [2023-12-19 00:49:48,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:49:48,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 00:49:48,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:49:48,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 00:49:48,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:49:48,937 INFO L87 Difference]: Start difference. First operand 6645 states and 9681 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states 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 00:49:49,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:49:49,021 INFO L93 Difference]: Finished difference Result 8809 states and 12713 transitions. [2023-12-19 00:49:49,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 00:49:49,021 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 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 95 [2023-12-19 00:49:49,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:49:49,025 INFO L225 Difference]: With dead ends: 8809 [2023-12-19 00:49:49,025 INFO L226 Difference]: Without dead ends: 4487 [2023-12-19 00:49:49,028 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 00:49:49,029 INFO L413 NwaCegarLoop]: 1579 mSDtfsCounter, 44 mSDsluCounter, 1513 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 3092 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 00:49:49,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 3092 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:49:49,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4487 states. [2023-12-19 00:49:49,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4487 to 4485. [2023-12-19 00:49:49,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4485 states, 4483 states have (on average 1.4769127816194512) internal successors, (6621), 4484 states have internal predecessors, (6621), 0 states have call successors, (0), 0 states 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 00:49:49,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4485 states to 4485 states and 6621 transitions. [2023-12-19 00:49:49,119 INFO L78 Accepts]: Start accepts. Automaton has 4485 states and 6621 transitions. Word has length 95 [2023-12-19 00:49:49,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:49:49,119 INFO L495 AbstractCegarLoop]: Abstraction has 4485 states and 6621 transitions. [2023-12-19 00:49:49,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states 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 00:49:49,119 INFO L276 IsEmpty]: Start isEmpty. Operand 4485 states and 6621 transitions. [2023-12-19 00:49:49,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-19 00:49:49,120 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:49:49,120 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:49:49,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-19 00:49:49,121 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:49:49,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:49:49,121 INFO L85 PathProgramCache]: Analyzing trace with hash -388033753, now seen corresponding path program 1 times [2023-12-19 00:49:49,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:49:49,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256625262] [2023-12-19 00:49:49,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:49:49,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:49:49,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:49:49,262 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:49:49,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:49:49,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256625262] [2023-12-19 00:49:49,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256625262] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:49:49,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:49:49,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:49:49,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720237929] [2023-12-19 00:49:49,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:49:49,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 00:49:49,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:49:49,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 00:49:49,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:49:49,263 INFO L87 Difference]: Start difference. First operand 4485 states and 6621 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:49:49,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:49:49,319 INFO L93 Difference]: Finished difference Result 5569 states and 8123 transitions. [2023-12-19 00:49:49,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 00:49:49,320 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2023-12-19 00:49:49,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:49:49,323 INFO L225 Difference]: With dead ends: 5569 [2023-12-19 00:49:49,324 INFO L226 Difference]: Without dead ends: 3407 [2023-12-19 00:49:49,325 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 00:49:49,326 INFO L413 NwaCegarLoop]: 1572 mSDtfsCounter, 41 mSDsluCounter, 1505 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 3077 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 00:49:49,329 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 3077 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:49:49,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3407 states. [2023-12-19 00:49:49,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3407 to 3405. [2023-12-19 00:49:49,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3405 states, 3403 states have (on average 1.5004407875404056) internal successors, (5106), 3404 states have internal predecessors, (5106), 0 states have call successors, (0), 0 states 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 00:49:49,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3405 states to 3405 states and 5106 transitions. [2023-12-19 00:49:49,390 INFO L78 Accepts]: Start accepts. Automaton has 3405 states and 5106 transitions. Word has length 97 [2023-12-19 00:49:49,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:49:49,390 INFO L495 AbstractCegarLoop]: Abstraction has 3405 states and 5106 transitions. [2023-12-19 00:49:49,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:49:49,390 INFO L276 IsEmpty]: Start isEmpty. Operand 3405 states and 5106 transitions. [2023-12-19 00:49:49,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-19 00:49:49,391 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:49:49,391 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:49:49,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-19 00:49:49,391 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:49:49,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:49:49,393 INFO L85 PathProgramCache]: Analyzing trace with hash -275510635, now seen corresponding path program 1 times [2023-12-19 00:49:49,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:49:49,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617932834] [2023-12-19 00:49:49,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:49:49,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:49:49,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:49:50,240 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:49:50,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:49:50,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617932834] [2023-12-19 00:49:50,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617932834] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:49:50,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [224861347] [2023-12-19 00:49:50,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:49:50,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:49:50,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:49:50,244 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 00:49:50,248 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 00:49:50,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:49:50,386 INFO L262 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-19 00:49:50,392 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:49:50,580 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 00:49:50,580 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:49:50,765 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 00:49:50,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [224861347] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:49:50,766 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:49:50,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 4] total 18 [2023-12-19 00:49:50,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000391018] [2023-12-19 00:49:50,766 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:49:50,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-19 00:49:50,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:49:50,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-19 00:49:50,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2023-12-19 00:49:50,767 INFO L87 Difference]: Start difference. First operand 3405 states and 5106 transitions. Second operand has 18 states, 18 states have (on average 15.722222222222221) internal successors, (283), 18 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:49:53,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:49:53,578 INFO L93 Difference]: Finished difference Result 12236 states and 17048 transitions. [2023-12-19 00:49:53,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-12-19 00:49:53,579 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 15.722222222222221) internal successors, (283), 18 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2023-12-19 00:49:53,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:49:53,587 INFO L225 Difference]: With dead ends: 12236 [2023-12-19 00:49:53,587 INFO L226 Difference]: Without dead ends: 11154 [2023-12-19 00:49:53,589 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1191 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=747, Invalid=3285, Unknown=0, NotChecked=0, Total=4032 [2023-12-19 00:49:53,590 INFO L413 NwaCegarLoop]: 1527 mSDtfsCounter, 15739 mSDsluCounter, 6456 mSDsCounter, 0 mSdLazyCounter, 929 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15739 SdHoareTripleChecker+Valid, 7983 SdHoareTripleChecker+Invalid, 986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 929 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 00:49:53,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15739 Valid, 7983 Invalid, 986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 929 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 00:49:53,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11154 states. [2023-12-19 00:49:53,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11154 to 10810. [2023-12-19 00:49:53,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10810 states, 10808 states have (on average 1.3677831236121392) internal successors, (14783), 10809 states have internal predecessors, (14783), 0 states have call successors, (0), 0 states 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 00:49:53,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10810 states to 10810 states and 14783 transitions. [2023-12-19 00:49:53,829 INFO L78 Accepts]: Start accepts. Automaton has 10810 states and 14783 transitions. Word has length 99 [2023-12-19 00:49:53,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:49:53,829 INFO L495 AbstractCegarLoop]: Abstraction has 10810 states and 14783 transitions. [2023-12-19 00:49:53,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 15.722222222222221) internal successors, (283), 18 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:49:53,829 INFO L276 IsEmpty]: Start isEmpty. Operand 10810 states and 14783 transitions. [2023-12-19 00:49:53,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-19 00:49:53,830 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:49:53,830 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:49:53,841 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 00:49:54,037 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,SelfDestructingSolverStorable25 [2023-12-19 00:49:54,037 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:49:54,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:49:54,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1497570702, now seen corresponding path program 1 times [2023-12-19 00:49:54,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:49:54,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212897242] [2023-12-19 00:49:54,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:49:54,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:49:54,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:49:54,386 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:49:54,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:49:54,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212897242] [2023-12-19 00:49:54,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212897242] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:49:54,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1822970263] [2023-12-19 00:49:54,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:49:54,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:49:54,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:49:54,387 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 00:49:54,411 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 00:49:54,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:49:54,510 INFO L262 TraceCheckSpWp]: Trace formula consists of 476 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-19 00:49:54,515 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:49:54,998 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:49:54,998 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:49:56,266 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:49:56,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1822970263] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:49:56,266 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:49:56,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 12] total 27 [2023-12-19 00:49:56,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697973128] [2023-12-19 00:49:56,267 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:49:56,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-12-19 00:49:56,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:49:56,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-12-19 00:49:56,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=587, Unknown=0, NotChecked=0, Total=702 [2023-12-19 00:49:56,268 INFO L87 Difference]: Start difference. First operand 10810 states and 14783 transitions. Second operand has 27 states, 27 states have (on average 9.666666666666666) internal successors, (261), 27 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:49:57,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:49:57,437 INFO L93 Difference]: Finished difference Result 25808 states and 34219 transitions. [2023-12-19 00:49:57,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-19 00:49:57,437 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 9.666666666666666) internal successors, (261), 27 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2023-12-19 00:49:57,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:49:57,453 INFO L225 Difference]: With dead ends: 25808 [2023-12-19 00:49:57,453 INFO L226 Difference]: Without dead ends: 17641 [2023-12-19 00:49:57,461 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 268 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=329, Invalid=1231, Unknown=0, NotChecked=0, Total=1560 [2023-12-19 00:49:57,461 INFO L413 NwaCegarLoop]: 1525 mSDtfsCounter, 10696 mSDsluCounter, 8079 mSDsCounter, 0 mSdLazyCounter, 637 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10696 SdHoareTripleChecker+Valid, 9604 SdHoareTripleChecker+Invalid, 661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 00:49:57,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10696 Valid, 9604 Invalid, 661 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 637 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 00:49:57,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17641 states. [2023-12-19 00:49:57,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17641 to 17125. [2023-12-19 00:49:57,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17125 states, 17123 states have (on average 1.3360392454593237) internal successors, (22877), 17124 states have internal predecessors, (22877), 0 states have call successors, (0), 0 states 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 00:49:57,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17125 states to 17125 states and 22877 transitions. [2023-12-19 00:49:57,930 INFO L78 Accepts]: Start accepts. Automaton has 17125 states and 22877 transitions. Word has length 100 [2023-12-19 00:49:57,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:49:57,930 INFO L495 AbstractCegarLoop]: Abstraction has 17125 states and 22877 transitions. [2023-12-19 00:49:57,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 9.666666666666666) internal successors, (261), 27 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:49:57,930 INFO L276 IsEmpty]: Start isEmpty. Operand 17125 states and 22877 transitions. [2023-12-19 00:49:57,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-19 00:49:57,931 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:49:57,931 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:49:57,936 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 00:49:58,136 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,SelfDestructingSolverStorable26 [2023-12-19 00:49:58,136 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:49:58,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:49:58,137 INFO L85 PathProgramCache]: Analyzing trace with hash 2130549902, now seen corresponding path program 1 times [2023-12-19 00:49:58,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:49:58,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861411441] [2023-12-19 00:49:58,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:49:58,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:49:58,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:49:58,994 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:49:58,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:49:58,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861411441] [2023-12-19 00:49:58,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861411441] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:49:58,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [255643283] [2023-12-19 00:49:58,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:49:58,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:49:58,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:49:58,997 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 00:49:58,999 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 00:49:59,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:49:59,108 INFO L262 TraceCheckSpWp]: Trace formula consists of 476 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-19 00:49:59,111 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:49:59,610 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:49:59,610 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:50:00,407 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:50:00,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [255643283] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:50:00,407 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:50:00,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 25 [2023-12-19 00:50:00,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465189300] [2023-12-19 00:50:00,408 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:50:00,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-19 00:50:00,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:50:00,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-19 00:50:00,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=552, Unknown=0, NotChecked=0, Total=650 [2023-12-19 00:50:00,409 INFO L87 Difference]: Start difference. First operand 17125 states and 22877 transitions. Second operand has 26 states, 26 states have (on average 10.26923076923077) internal successors, (267), 25 states have internal predecessors, (267), 0 states have call successors, (0), 0 states 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 00:50:01,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:50:01,473 INFO L93 Difference]: Finished difference Result 30270 states and 39819 transitions. [2023-12-19 00:50:01,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 00:50:01,474 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 10.26923076923077) internal successors, (267), 25 states have internal predecessors, (267), 0 states have call successors, (0), 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 100 [2023-12-19 00:50:01,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:50:01,489 INFO L225 Difference]: With dead ends: 30270 [2023-12-19 00:50:01,489 INFO L226 Difference]: Without dead ends: 18161 [2023-12-19 00:50:01,493 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=290, Invalid=1042, Unknown=0, NotChecked=0, Total=1332 [2023-12-19 00:50:01,493 INFO L413 NwaCegarLoop]: 1525 mSDtfsCounter, 17126 mSDsluCounter, 7916 mSDsCounter, 0 mSdLazyCounter, 660 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17126 SdHoareTripleChecker+Valid, 9441 SdHoareTripleChecker+Invalid, 677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 00:50:01,494 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17126 Valid, 9441 Invalid, 677 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 660 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 00:50:01,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18161 states. [2023-12-19 00:50:01,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18161 to 16093. [2023-12-19 00:50:01,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16093 states, 16091 states have (on average 1.3191224908333852) internal successors, (21226), 16092 states have internal predecessors, (21226), 0 states have call successors, (0), 0 states 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 00:50:01,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16093 states to 16093 states and 21226 transitions. [2023-12-19 00:50:01,973 INFO L78 Accepts]: Start accepts. Automaton has 16093 states and 21226 transitions. Word has length 100 [2023-12-19 00:50:01,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:50:01,973 INFO L495 AbstractCegarLoop]: Abstraction has 16093 states and 21226 transitions. [2023-12-19 00:50:01,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 10.26923076923077) internal successors, (267), 25 states have internal predecessors, (267), 0 states have call successors, (0), 0 states 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 00:50:01,973 INFO L276 IsEmpty]: Start isEmpty. Operand 16093 states and 21226 transitions. [2023-12-19 00:50:01,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-19 00:50:01,974 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:50:01,974 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:50:01,979 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-19 00:50:02,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:50:02,175 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:50:02,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:50:02,175 INFO L85 PathProgramCache]: Analyzing trace with hash 1607945692, now seen corresponding path program 1 times [2023-12-19 00:50:02,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:50:02,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796712181] [2023-12-19 00:50:02,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:50:02,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:50:02,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:50:02,562 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 00:50:02,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:50:02,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796712181] [2023-12-19 00:50:02,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796712181] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:50:02,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1717401745] [2023-12-19 00:50:02,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:50:02,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:50:02,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:50:02,564 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 00:50:02,583 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 00:50:02,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:50:02,693 INFO L262 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-19 00:50:02,696 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:50:03,419 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 00:50:03,419 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:50:04,402 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 00:50:04,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1717401745] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:50:04,403 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:50:04,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 14, 14] total 32 [2023-12-19 00:50:04,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716069335] [2023-12-19 00:50:04,403 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:50:04,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-19 00:50:04,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:50:04,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-19 00:50:04,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=823, Unknown=0, NotChecked=0, Total=992 [2023-12-19 00:50:04,404 INFO L87 Difference]: Start difference. First operand 16093 states and 21226 transitions. Second operand has 32 states, 32 states have (on average 7.71875) internal successors, (247), 32 states have internal predecessors, (247), 0 states have call successors, (0), 0 states 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 00:50:06,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:50:06,327 INFO L93 Difference]: Finished difference Result 42805 states and 55225 transitions. [2023-12-19 00:50:06,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-19 00:50:06,328 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 7.71875) internal successors, (247), 32 states have internal predecessors, (247), 0 states have call successors, (0), 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 100 [2023-12-19 00:50:06,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:50:06,359 INFO L225 Difference]: With dead ends: 42805 [2023-12-19 00:50:06,359 INFO L226 Difference]: Without dead ends: 29519 [2023-12-19 00:50:06,373 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 793 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=704, Invalid=2488, Unknown=0, NotChecked=0, Total=3192 [2023-12-19 00:50:06,374 INFO L413 NwaCegarLoop]: 1542 mSDtfsCounter, 16796 mSDsluCounter, 8264 mSDsCounter, 0 mSdLazyCounter, 1178 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16796 SdHoareTripleChecker+Valid, 9806 SdHoareTripleChecker+Invalid, 1203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 00:50:06,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16796 Valid, 9806 Invalid, 1203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1178 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 00:50:06,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29519 states. [2023-12-19 00:50:07,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29519 to 19233. [2023-12-19 00:50:07,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19233 states, 19231 states have (on average 1.3087202953564556) internal successors, (25168), 19232 states have internal predecessors, (25168), 0 states have call successors, (0), 0 states 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 00:50:07,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19233 states to 19233 states and 25168 transitions. [2023-12-19 00:50:07,127 INFO L78 Accepts]: Start accepts. Automaton has 19233 states and 25168 transitions. Word has length 100 [2023-12-19 00:50:07,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:50:07,127 INFO L495 AbstractCegarLoop]: Abstraction has 19233 states and 25168 transitions. [2023-12-19 00:50:07,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 7.71875) internal successors, (247), 32 states have internal predecessors, (247), 0 states have call successors, (0), 0 states 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 00:50:07,127 INFO L276 IsEmpty]: Start isEmpty. Operand 19233 states and 25168 transitions. [2023-12-19 00:50:07,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-19 00:50:07,128 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:50:07,128 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:50:07,136 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 00:50:07,329 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,SelfDestructingSolverStorable28 [2023-12-19 00:50:07,329 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:50:07,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:50:07,330 INFO L85 PathProgramCache]: Analyzing trace with hash 512036355, now seen corresponding path program 1 times [2023-12-19 00:50:07,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:50:07,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518137104] [2023-12-19 00:50:07,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:50:07,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:50:07,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:50:07,635 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 00:50:07,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:50:07,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518137104] [2023-12-19 00:50:07,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518137104] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:50:07,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [579341042] [2023-12-19 00:50:07,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:50:07,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:50:07,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:50:07,637 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 00:50:07,638 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 00:50:07,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:50:07,754 INFO L262 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-19 00:50:07,757 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:50:08,310 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 00:50:08,310 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:50:09,041 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 00:50:09,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [579341042] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:50:09,042 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:50:09,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 28 [2023-12-19 00:50:09,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917568720] [2023-12-19 00:50:09,042 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:50:09,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-19 00:50:09,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:50:09,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-19 00:50:09,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=624, Unknown=0, NotChecked=0, Total=756 [2023-12-19 00:50:09,044 INFO L87 Difference]: Start difference. First operand 19233 states and 25168 transitions. Second operand has 28 states, 28 states have (on average 9.214285714285714) internal successors, (258), 28 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:50:10,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:50:10,890 INFO L93 Difference]: Finished difference Result 54983 states and 70605 transitions. [2023-12-19 00:50:10,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-19 00:50:10,891 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 9.214285714285714) internal successors, (258), 28 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2023-12-19 00:50:10,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:50:10,927 INFO L225 Difference]: With dead ends: 54983 [2023-12-19 00:50:10,927 INFO L226 Difference]: Without dead ends: 38499 [2023-12-19 00:50:10,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 359 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=411, Invalid=1395, Unknown=0, NotChecked=0, Total=1806 [2023-12-19 00:50:10,933 INFO L413 NwaCegarLoop]: 1546 mSDtfsCounter, 9250 mSDsluCounter, 5419 mSDsCounter, 0 mSdLazyCounter, 970 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9250 SdHoareTripleChecker+Valid, 6965 SdHoareTripleChecker+Invalid, 987 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 970 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 00:50:10,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9250 Valid, 6965 Invalid, 987 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 970 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 00:50:10,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38499 states. [2023-12-19 00:50:12,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38499 to 36591. [2023-12-19 00:50:12,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36591 states, 36589 states have (on average 1.2807674437672525) internal successors, (46862), 36590 states have internal predecessors, (46862), 0 states have call successors, (0), 0 states 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 00:50:12,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36591 states to 36591 states and 46862 transitions. [2023-12-19 00:50:12,166 INFO L78 Accepts]: Start accepts. Automaton has 36591 states and 46862 transitions. Word has length 101 [2023-12-19 00:50:12,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:50:12,166 INFO L495 AbstractCegarLoop]: Abstraction has 36591 states and 46862 transitions. [2023-12-19 00:50:12,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 9.214285714285714) internal successors, (258), 28 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:50:12,167 INFO L276 IsEmpty]: Start isEmpty. Operand 36591 states and 46862 transitions. [2023-12-19 00:50:12,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-19 00:50:12,168 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:50:12,168 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:50:12,177 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 00:50:12,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:50:12,375 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:50:12,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:50:12,375 INFO L85 PathProgramCache]: Analyzing trace with hash 2071389260, now seen corresponding path program 1 times [2023-12-19 00:50:12,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:50:12,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613289653] [2023-12-19 00:50:12,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:50:12,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:50:12,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:50:12,714 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:50:12,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:50:12,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613289653] [2023-12-19 00:50:12,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613289653] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:50:12,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [228337500] [2023-12-19 00:50:12,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:50:12,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:50:12,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:50:12,715 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 00:50:12,746 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 00:50:12,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:50:12,833 INFO L262 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-19 00:50:12,836 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:50:13,770 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:50:13,771 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:50:14,548 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:50:14,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [228337500] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:50:14,549 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:50:14,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 30 [2023-12-19 00:50:14,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464194159] [2023-12-19 00:50:14,549 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:50:14,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-19 00:50:14,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:50:14,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-19 00:50:14,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=773, Unknown=0, NotChecked=0, Total=870 [2023-12-19 00:50:14,551 INFO L87 Difference]: Start difference. First operand 36591 states and 46862 transitions. Second operand has 30 states, 30 states have (on average 9.766666666666667) internal successors, (293), 30 states have internal predecessors, (293), 0 states have call successors, (0), 0 states 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 00:50:20,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:50:20,514 INFO L93 Difference]: Finished difference Result 109633 states and 137318 transitions. [2023-12-19 00:50:20,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-12-19 00:50:20,514 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 9.766666666666667) internal successors, (293), 30 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2023-12-19 00:50:20,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:50:20,593 INFO L225 Difference]: With dead ends: 109633 [2023-12-19 00:50:20,594 INFO L226 Difference]: Without dead ends: 79279 [2023-12-19 00:50:20,608 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1421 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1143, Invalid=4709, Unknown=0, NotChecked=0, Total=5852 [2023-12-19 00:50:20,608 INFO L413 NwaCegarLoop]: 1536 mSDtfsCounter, 15732 mSDsluCounter, 12512 mSDsCounter, 0 mSdLazyCounter, 954 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15732 SdHoareTripleChecker+Valid, 14048 SdHoareTripleChecker+Invalid, 1006 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 954 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 00:50:20,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15732 Valid, 14048 Invalid, 1006 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 954 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 00:50:20,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79279 states. [2023-12-19 00:50:23,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79279 to 68055. [2023-12-19 00:50:23,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68055 states, 68053 states have (on average 1.2566675973138584) internal successors, (85520), 68054 states have internal predecessors, (85520), 0 states have call successors, (0), 0 states 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 00:50:23,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68055 states to 68055 states and 85520 transitions. [2023-12-19 00:50:23,776 INFO L78 Accepts]: Start accepts. Automaton has 68055 states and 85520 transitions. Word has length 102 [2023-12-19 00:50:23,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:50:23,776 INFO L495 AbstractCegarLoop]: Abstraction has 68055 states and 85520 transitions. [2023-12-19 00:50:23,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 9.766666666666667) internal successors, (293), 30 states have internal predecessors, (293), 0 states have call successors, (0), 0 states 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 00:50:23,776 INFO L276 IsEmpty]: Start isEmpty. Operand 68055 states and 85520 transitions. [2023-12-19 00:50:23,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-19 00:50:23,778 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:50:23,778 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:50:23,783 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-19 00:50:23,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:50:23,980 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:50:23,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:50:23,980 INFO L85 PathProgramCache]: Analyzing trace with hash -1603445, now seen corresponding path program 1 times [2023-12-19 00:50:23,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:50:23,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772494416] [2023-12-19 00:50:23,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:50:23,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:50:24,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:50:24,417 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 00:50:24,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:50:24,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772494416] [2023-12-19 00:50:24,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772494416] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:50:24,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110952866] [2023-12-19 00:50:24,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:50:24,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:50:24,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:50:24,419 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 00:50:24,421 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 00:50:24,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:50:24,526 INFO L262 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-19 00:50:24,527 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:50:25,164 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 00:50:25,164 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:50:26,039 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 00:50:26,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [110952866] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:50:26,040 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:50:26,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 29 [2023-12-19 00:50:26,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566822777] [2023-12-19 00:50:26,040 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:50:26,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-19 00:50:26,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:50:26,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-19 00:50:26,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=644, Unknown=0, NotChecked=0, Total=812 [2023-12-19 00:50:26,041 INFO L87 Difference]: Start difference. First operand 68055 states and 85520 transitions. Second operand has 29 states, 29 states have (on average 9.344827586206897) internal successors, (271), 29 states have internal predecessors, (271), 0 states have call successors, (0), 0 states 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 00:50:31,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:50:31,452 INFO L93 Difference]: Finished difference Result 199913 states and 249646 transitions. [2023-12-19 00:50:31,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-19 00:50:31,453 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 9.344827586206897) internal successors, (271), 29 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2023-12-19 00:50:31,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:50:31,605 INFO L225 Difference]: With dead ends: 199913 [2023-12-19 00:50:31,605 INFO L226 Difference]: Without dead ends: 141531 [2023-12-19 00:50:31,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=480, Invalid=1412, Unknown=0, NotChecked=0, Total=1892 [2023-12-19 00:50:31,632 INFO L413 NwaCegarLoop]: 1540 mSDtfsCounter, 15358 mSDsluCounter, 6608 mSDsCounter, 0 mSdLazyCounter, 717 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15358 SdHoareTripleChecker+Valid, 8148 SdHoareTripleChecker+Invalid, 738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 717 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 00:50:31,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15358 Valid, 8148 Invalid, 738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 717 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 00:50:31,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141531 states. [2023-12-19 00:50:37,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141531 to 134509. [2023-12-19 00:50:37,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134509 states, 134507 states have (on average 1.2404856252834424) internal successors, (166854), 134508 states have internal predecessors, (166854), 0 states have call successors, (0), 0 states 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 00:50:37,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134509 states to 134509 states and 166854 transitions. [2023-12-19 00:50:37,938 INFO L78 Accepts]: Start accepts. Automaton has 134509 states and 166854 transitions. Word has length 103 [2023-12-19 00:50:37,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:50:37,938 INFO L495 AbstractCegarLoop]: Abstraction has 134509 states and 166854 transitions. [2023-12-19 00:50:37,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 9.344827586206897) internal successors, (271), 29 states have internal predecessors, (271), 0 states have call successors, (0), 0 states 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 00:50:37,938 INFO L276 IsEmpty]: Start isEmpty. Operand 134509 states and 166854 transitions. [2023-12-19 00:50:37,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-19 00:50:37,941 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:50:37,941 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:50:37,945 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 00:50:38,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:50:38,144 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:50:38,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:50:38,145 INFO L85 PathProgramCache]: Analyzing trace with hash -964081404, now seen corresponding path program 1 times [2023-12-19 00:50:38,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:50:38,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141744703] [2023-12-19 00:50:38,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:50:38,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:50:38,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:50:39,175 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 00:50:39,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:50:39,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141744703] [2023-12-19 00:50:39,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141744703] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:50:39,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [346628451] [2023-12-19 00:50:39,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:50:39,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:50:39,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:50:39,177 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 00:50:39,179 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 00:50:39,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:50:39,334 INFO L262 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-19 00:50:39,337 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:50:40,287 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:50:40,288 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:50:41,619 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:50:41,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [346628451] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:50:41,619 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:50:41,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14, 15] total 38 [2023-12-19 00:50:41,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010364573] [2023-12-19 00:50:41,619 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:50:41,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-12-19 00:50:41,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:50:41,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-12-19 00:50:41,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=1258, Unknown=0, NotChecked=0, Total=1406 [2023-12-19 00:50:41,621 INFO L87 Difference]: Start difference. First operand 134509 states and 166854 transitions. Second operand has 38 states, 38 states have (on average 7.605263157894737) internal successors, (289), 38 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:50:52,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:50:52,945 INFO L93 Difference]: Finished difference Result 215777 states and 265690 transitions. [2023-12-19 00:50:52,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2023-12-19 00:50:52,946 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 7.605263157894737) internal successors, (289), 38 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2023-12-19 00:50:52,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:50:53,121 INFO L225 Difference]: With dead ends: 215777 [2023-12-19 00:50:53,121 INFO L226 Difference]: Without dead ends: 157797 [2023-12-19 00:50:53,165 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2794 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=1980, Invalid=8120, Unknown=0, NotChecked=0, Total=10100 [2023-12-19 00:50:53,165 INFO L413 NwaCegarLoop]: 1563 mSDtfsCounter, 12251 mSDsluCounter, 26960 mSDsCounter, 0 mSdLazyCounter, 2528 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12251 SdHoareTripleChecker+Valid, 28523 SdHoareTripleChecker+Invalid, 2597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 2528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-19 00:50:53,166 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12251 Valid, 28523 Invalid, 2597 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [69 Valid, 2528 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-19 00:50:53,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157797 states. [2023-12-19 00:50:58,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157797 to 118193. [2023-12-19 00:50:58,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118193 states, 118191 states have (on average 1.2373784805949692) internal successors, (146247), 118192 states have internal predecessors, (146247), 0 states have call successors, (0), 0 states 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 00:50:59,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118193 states to 118193 states and 146247 transitions. [2023-12-19 00:50:59,001 INFO L78 Accepts]: Start accepts. Automaton has 118193 states and 146247 transitions. Word has length 104 [2023-12-19 00:50:59,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:50:59,002 INFO L495 AbstractCegarLoop]: Abstraction has 118193 states and 146247 transitions. [2023-12-19 00:50:59,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 7.605263157894737) internal successors, (289), 38 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:50:59,002 INFO L276 IsEmpty]: Start isEmpty. Operand 118193 states and 146247 transitions. [2023-12-19 00:50:59,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-19 00:50:59,004 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:50:59,004 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:50:59,009 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 00:50:59,205 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,SelfDestructingSolverStorable32 [2023-12-19 00:50:59,205 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:50:59,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:50:59,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1810973692, now seen corresponding path program 1 times [2023-12-19 00:50:59,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:50:59,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717812535] [2023-12-19 00:50:59,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:50:59,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:50:59,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:51:00,308 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 00:51:00,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:51:00,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717812535] [2023-12-19 00:51:00,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717812535] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:51:00,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [387593625] [2023-12-19 00:51:00,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:51:00,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:51:00,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:51:00,310 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 00:51:00,312 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 00:51:00,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:51:00,451 INFO L262 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 73 conjunts are in the unsatisfiable core [2023-12-19 00:51:00,453 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:51:09,147 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 00:51:09,148 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:51:22,086 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:51:22,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [387593625] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:51:22,087 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:51:22,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 32, 42] total 83 [2023-12-19 00:51:22,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16576784] [2023-12-19 00:51:22,087 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:51:22,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2023-12-19 00:51:22,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:51:22,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2023-12-19 00:51:22,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=865, Invalid=5941, Unknown=0, NotChecked=0, Total=6806 [2023-12-19 00:51:22,090 INFO L87 Difference]: Start difference. First operand 118193 states and 146247 transitions. Second operand has 83 states, 83 states have (on average 3.4216867469879517) internal successors, (284), 83 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:01:01,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:01:01,974 INFO L93 Difference]: Finished difference Result 509502 states and 626066 transitions. [2023-12-19 01:01:01,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 558 states. [2023-12-19 01:01:01,974 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 83 states have (on average 3.4216867469879517) internal successors, (284), 83 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2023-12-19 01:01:01,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:01:02,842 INFO L225 Difference]: With dead ends: 509502 [2023-12-19 01:01:02,842 INFO L226 Difference]: Without dead ends: 450616 [2023-12-19 01:01:02,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 764 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 626 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183159 ImplicationChecksByTransitivity, 543.8s TimeCoverageRelationStatistics Valid=56282, Invalid=337474, Unknown=0, NotChecked=0, Total=393756 [2023-12-19 01:01:02,982 INFO L413 NwaCegarLoop]: 1627 mSDtfsCounter, 31012 mSDsluCounter, 31526 mSDsCounter, 0 mSdLazyCounter, 13917 mSolverCounterSat, 274 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31012 SdHoareTripleChecker+Valid, 33153 SdHoareTripleChecker+Invalid, 14191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 274 IncrementalHoareTripleChecker+Valid, 13917 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.7s IncrementalHoareTripleChecker+Time [2023-12-19 01:01:02,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31012 Valid, 33153 Invalid, 14191 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [274 Valid, 13917 Invalid, 0 Unknown, 0 Unchecked, 18.7s Time] [2023-12-19 01:01:03,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450616 states. [2023-12-19 01:01:12,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450616 to 109520. [2023-12-19 01:01:12,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109520 states, 109518 states have (on average 1.2359703427747037) internal successors, (135361), 109519 states have internal predecessors, (135361), 0 states have call successors, (0), 0 states 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 01:01:13,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109520 states to 109520 states and 135361 transitions. [2023-12-19 01:01:13,241 INFO L78 Accepts]: Start accepts. Automaton has 109520 states and 135361 transitions. Word has length 104 [2023-12-19 01:01:13,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:01:13,241 INFO L495 AbstractCegarLoop]: Abstraction has 109520 states and 135361 transitions. [2023-12-19 01:01:13,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 83 states have (on average 3.4216867469879517) internal successors, (284), 83 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:01:13,242 INFO L276 IsEmpty]: Start isEmpty. Operand 109520 states and 135361 transitions. [2023-12-19 01:01:13,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-19 01:01:13,243 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:01:13,243 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:01:13,250 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 01:01:13,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:01:13,448 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:01:13,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:01:13,449 INFO L85 PathProgramCache]: Analyzing trace with hash -468472644, now seen corresponding path program 1 times [2023-12-19 01:01:13,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:01:13,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519411368] [2023-12-19 01:01:13,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:01:13,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:01:13,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:01:16,847 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:01:16,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:01:16,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519411368] [2023-12-19 01:01:16,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519411368] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:01:16,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [653412693] [2023-12-19 01:01:16,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:01:16,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:01:16,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:01:16,849 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 01:01:16,850 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 01:01:16,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:01:16,974 INFO L262 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-19 01:01:16,976 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:01:18,145 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 01:01:18,146 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 01:01:19,394 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 01:01:19,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [653412693] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 01:01:19,394 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 01:01:19,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 15, 16] total 63 [2023-12-19 01:01:19,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430358115] [2023-12-19 01:01:19,394 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 01:01:19,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2023-12-19 01:01:19,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:01:19,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2023-12-19 01:01:19,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=248, Invalid=3658, Unknown=0, NotChecked=0, Total=3906 [2023-12-19 01:01:19,396 INFO L87 Difference]: Start difference. First operand 109520 states and 135361 transitions. Second operand has 63 states, 63 states have (on average 4.428571428571429) internal successors, (279), 63 states have internal predecessors, (279), 0 states have call successors, (0), 0 states 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 01:02:26,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:02:26,587 INFO L93 Difference]: Finished difference Result 313685 states and 388032 transitions. [2023-12-19 01:02:26,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 224 states. [2023-12-19 01:02:26,588 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 4.428571428571429) internal successors, (279), 63 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2023-12-19 01:02:26,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:02:26,966 INFO L225 Difference]: With dead ends: 313685 [2023-12-19 01:02:26,966 INFO L226 Difference]: Without dead ends: 269573 [2023-12-19 01:02:27,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 464 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 283 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28021 ImplicationChecksByTransitivity, 42.0s TimeCoverageRelationStatistics Valid=15265, Invalid=65675, Unknown=0, NotChecked=0, Total=80940 [2023-12-19 01:02:27,207 INFO L413 NwaCegarLoop]: 1857 mSDtfsCounter, 39736 mSDsluCounter, 34459 mSDsCounter, 0 mSdLazyCounter, 11131 mSolverCounterSat, 304 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39736 SdHoareTripleChecker+Valid, 36316 SdHoareTripleChecker+Invalid, 11435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 304 IncrementalHoareTripleChecker+Valid, 11131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2023-12-19 01:02:27,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39736 Valid, 36316 Invalid, 11435 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [304 Valid, 11131 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2023-12-19 01:02:27,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269573 states. Received shutdown request... [2023-12-19 01:02:33,733 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-19 01:02:33,733 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 01:02:34,768 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 01:02:34,864 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 [2023-12-19 01:02:35,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269573 to 101936. [2023-12-19 01:02:35,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101936 states, 101934 states have (on average 1.2366923695724685) internal successors, (126061), 101935 states have internal predecessors, (126061), 0 states have call successors, (0), 0 states 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 01:02:35,677 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-12-19 01:02:35,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-12-19 01:02:35,679 WARN L619 AbstractCegarLoop]: Verification canceled: while ReachableStatesComputation was computing reachable states (1 states constructed, input type DoubleDeckerAutomaton). [2023-12-19 01:02:35,680 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-12-19 01:02:35,683 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] [2023-12-19 01:02:35,684 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-19 01:02:35,686 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.12 01:02:35 BoogieIcfgContainer [2023-12-19 01:02:35,686 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-19 01:02:35,687 INFO L158 Benchmark]: Toolchain (without parser) took 804350.97ms. Allocated memory was 242.2MB in the beginning and 7.0GB in the end (delta: 6.7GB). Free memory was 190.0MB in the beginning and 3.6GB in the end (delta: -3.4GB). Peak memory consumption was 4.8GB. Max. memory is 8.0GB. [2023-12-19 01:02:35,687 INFO L158 Benchmark]: CDTParser took 0.52ms. Allocated memory is still 191.9MB. Free memory was 137.7MB in the beginning and 137.6MB in the end (delta: 151.1kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-19 01:02:35,687 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1584.44ms. Allocated memory is still 242.2MB. Free memory was 189.5MB in the beginning and 109.7MB in the end (delta: 79.8MB). Peak memory consumption was 114.4MB. Max. memory is 8.0GB. [2023-12-19 01:02:35,687 INFO L158 Benchmark]: Boogie Procedure Inliner took 434.52ms. Allocated memory was 242.2MB in the beginning and 324.0MB in the end (delta: 81.8MB). Free memory was 109.7MB in the beginning and 217.4MB in the end (delta: -107.7MB). Peak memory consumption was 54.3MB. Max. memory is 8.0GB. [2023-12-19 01:02:35,688 INFO L158 Benchmark]: Boogie Preprocessor took 446.80ms. Allocated memory is still 324.0MB. Free memory was 217.4MB in the beginning and 180.7MB in the end (delta: 36.7MB). Peak memory consumption was 89.7MB. Max. memory is 8.0GB. [2023-12-19 01:02:35,688 INFO L158 Benchmark]: RCFGBuilder took 4088.55ms. Allocated memory was 324.0MB in the beginning and 648.0MB in the end (delta: 324.0MB). Free memory was 203.7MB in the beginning and 486.8MB in the end (delta: -283.2MB). Peak memory consumption was 300.9MB. Max. memory is 8.0GB. [2023-12-19 01:02:35,688 INFO L158 Benchmark]: TraceAbstraction took 797743.19ms. Allocated memory was 648.0MB in the beginning and 7.0GB in the end (delta: 6.3GB). Free memory was 485.8MB in the beginning and 3.6GB in the end (delta: -3.1GB). Peak memory consumption was 4.7GB. Max. memory is 8.0GB. [2023-12-19 01:02:35,689 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.52ms. Allocated memory is still 191.9MB. Free memory was 137.7MB in the beginning and 137.6MB in the end (delta: 151.1kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 1584.44ms. Allocated memory is still 242.2MB. Free memory was 189.5MB in the beginning and 109.7MB in the end (delta: 79.8MB). Peak memory consumption was 114.4MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 434.52ms. Allocated memory was 242.2MB in the beginning and 324.0MB in the end (delta: 81.8MB). Free memory was 109.7MB in the beginning and 217.4MB in the end (delta: -107.7MB). Peak memory consumption was 54.3MB. Max. memory is 8.0GB. * Boogie Preprocessor took 446.80ms. Allocated memory is still 324.0MB. Free memory was 217.4MB in the beginning and 180.7MB in the end (delta: 36.7MB). Peak memory consumption was 89.7MB. Max. memory is 8.0GB. * RCFGBuilder took 4088.55ms. Allocated memory was 324.0MB in the beginning and 648.0MB in the end (delta: 324.0MB). Free memory was 203.7MB in the beginning and 486.8MB in the end (delta: -283.2MB). Peak memory consumption was 300.9MB. Max. memory is 8.0GB. * TraceAbstraction took 797743.19ms. Allocated memory was 648.0MB in the beginning and 7.0GB in the end (delta: 6.3GB). Free memory was 485.8MB in the beginning and 3.6GB in the end (delta: -3.1GB). Peak memory consumption was 4.7GB. 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: 516]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 516). Cancelled while ReachableStatesComputation was computing reachable states (1 states constructed, input type DoubleDeckerAutomaton). - TimeoutResultAtElement [Line: 711]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 711). Cancelled while ReachableStatesComputation was computing reachable states (1 states constructed, input type DoubleDeckerAutomaton). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 851 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 797.7s, OverallIterations: 35, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 699.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 259846 SdHoareTripleChecker+Valid, 37.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 259846 mSDsluCounter, 234515 SdHoareTripleChecker+Invalid, 32.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 179556 mSDsCounter, 2117 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 40347 IncrementalHoareTripleChecker+Invalid, 42464 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2117 mSolverCounterUnsat, 54959 mSDtfsCounter, 40347 mSolverCounterSat, 0.8s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3320 GetRequests, 1853 SyntacticMatches, 0 SemanticMatches, 1467 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218714 ImplicationChecksByTransitivity, 599.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=134509occurred in iteration=32, InterpolantAutomatonStates: 1166, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 46.5s AutomataMinimizationTime, 35 MinimizatonAttempts, 557832 StatesRemovedByMinimization, 31 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 47.4s InterpolantComputationTime, 3863 NumberOfCodeBlocks, 3863 NumberOfCodeBlocksAsserted, 45 NumberOfCheckSat, 4825 ConstructedInterpolants, 0 QuantifiedInterpolants, 75523 SizeOfPredicates, 74 NumberOfNonLiveVariables, 4807 ConjunctsInSsa, 240 ConjunctsInUnsatCore, 55 InterpolantComputations, 25 PerfectInterpolantSequences, 464/702 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