/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/combinations/pals_lcr.4.ufo.UNBOUNDED.pals+Problem12_label03.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 00:54:06,408 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 00:54:06,498 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-16 00:54:06,502 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 00:54:06,503 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 00:54:06,530 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 00:54:06,530 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 00:54:06,530 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 00:54:06,531 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 00:54:06,534 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 00:54:06,535 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 00:54:06,535 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 00:54:06,536 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 00:54:06,537 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 00:54:06,537 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 00:54:06,537 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 00:54:06,538 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 00:54:06,538 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 00:54:06,538 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 00:54:06,539 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 00:54:06,540 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 00:54:06,540 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 00:54:06,540 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 00:54:06,540 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 00:54:06,541 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 00:54:06,541 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 00:54:06,541 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 00:54:06,541 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 00:54:06,542 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 00:54:06,542 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 00:54:06,543 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 00:54:06,543 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 00:54:06,543 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 00:54:06,543 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 00:54:06,543 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 00:54:06,544 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 00:54:06,544 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 00:54:06,544 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 00:54:06,544 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 00:54:06,544 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 00:54:06,544 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 00:54:06,545 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 00:54:06,545 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 00:54:06,545 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-16 00:54:06,785 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 00:54:06,800 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 00:54:06,802 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 00:54:06,803 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 00:54:06,804 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 00:54:06,805 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pals_lcr.4.ufo.UNBOUNDED.pals+Problem12_label03.c [2023-12-16 00:54:07,910 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 00:54:08,325 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 00:54:08,326 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.4.ufo.UNBOUNDED.pals+Problem12_label03.c [2023-12-16 00:54:08,365 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/920d2d801/c820f2da266546c7972743823f540204/FLAG03b074dbf [2023-12-16 00:54:08,379 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/920d2d801/c820f2da266546c7972743823f540204 [2023-12-16 00:54:08,381 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 00:54:08,383 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 00:54:08,385 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 00:54:08,385 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 00:54:08,389 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 00:54:08,390 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 12:54:08" (1/1) ... [2023-12-16 00:54:08,390 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@394f41e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:54:08, skipping insertion in model container [2023-12-16 00:54:08,391 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 12:54:08" (1/1) ... [2023-12-16 00:54:08,495 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 00:54:08,812 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.4.ufo.UNBOUNDED.pals+Problem12_label03.c[8712,8725] [2023-12-16 00:54:08,847 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.4.ufo.UNBOUNDED.pals+Problem12_label03.c[11049,11062] [2023-12-16 00:54:09,486 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 00:54:09,499 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 00:54:09,537 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.4.ufo.UNBOUNDED.pals+Problem12_label03.c[8712,8725] [2023-12-16 00:54:09,542 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.4.ufo.UNBOUNDED.pals+Problem12_label03.c[11049,11062] [2023-12-16 00:54:09,907 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 00:54:09,948 INFO L206 MainTranslator]: Completed translation [2023-12-16 00:54:09,949 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:54:09 WrapperNode [2023-12-16 00:54:09,949 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 00:54:09,950 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 00:54:09,950 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 00:54:09,950 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 00:54:09,956 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:54:09" (1/1) ... [2023-12-16 00:54:10,046 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:54:09" (1/1) ... [2023-12-16 00:54:10,435 INFO L138 Inliner]: procedures = 36, calls = 21, calls flagged for inlining = 16, calls inlined = 16, statements flattened = 5035 [2023-12-16 00:54:10,436 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 00:54:10,440 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 00:54:10,440 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 00:54:10,440 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 00:54:10,450 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:54:09" (1/1) ... [2023-12-16 00:54:10,451 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:54:09" (1/1) ... [2023-12-16 00:54:10,514 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:54:09" (1/1) ... [2023-12-16 00:54:10,710 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]. [2023-12-16 00:54:10,710 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:54:09" (1/1) ... [2023-12-16 00:54:10,710 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:54:09" (1/1) ... [2023-12-16 00:54:10,869 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:54:09" (1/1) ... [2023-12-16 00:54:10,902 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:54:09" (1/1) ... [2023-12-16 00:54:10,925 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:54:09" (1/1) ... [2023-12-16 00:54:10,941 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:54:09" (1/1) ... [2023-12-16 00:54:10,989 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 00:54:10,991 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 00:54:10,991 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 00:54:10,991 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 00:54:10,992 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:54:09" (1/1) ... [2023-12-16 00:54:10,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 00:54:11,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:54:11,019 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) [2023-12-16 00:54:11,044 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 [2023-12-16 00:54:11,050 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 00:54:11,050 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 00:54:11,050 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 00:54:11,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 00:54:11,162 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 00:54:11,165 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 00:54:14,973 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 00:54:15,036 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 00:54:15,036 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-16 00:54:15,036 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 12:54:15 BoogieIcfgContainer [2023-12-16 00:54:15,036 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 00:54:15,039 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 00:54:15,039 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 00:54:15,041 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 00:54:15,042 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 12:54:08" (1/3) ... [2023-12-16 00:54:15,042 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48be180b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 12:54:15, skipping insertion in model container [2023-12-16 00:54:15,042 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:54:09" (2/3) ... [2023-12-16 00:54:15,043 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48be180b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 12:54:15, skipping insertion in model container [2023-12-16 00:54:15,043 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 12:54:15" (3/3) ... [2023-12-16 00:54:15,044 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.ufo.UNBOUNDED.pals+Problem12_label03.c [2023-12-16 00:54:15,059 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 00:54:15,060 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-16 00:54:15,130 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 00:54:15,136 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;@7fc8dccd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 00:54:15,136 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-16 00:54:15,145 INFO L276 IsEmpty]: Start isEmpty. Operand has 822 states, 819 states have (on average 1.9768009768009769) internal successors, (1619), 821 states have internal predecessors, (1619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:54:15,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-16 00:54:15,151 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:54:15,152 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:54:15,153 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:54:15,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:54:15,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1017806083, now seen corresponding path program 1 times [2023-12-16 00:54:15,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:54:15,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600309007] [2023-12-16 00:54:15,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:54:15,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:54:15,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:54:15,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:54:15,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:54:15,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600309007] [2023-12-16 00:54:15,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600309007] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:54:15,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:54:15,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 00:54:15,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842316987] [2023-12-16 00:54:15,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:54:15,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 00:54:15,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:54:15,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 00:54:15,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 00:54:15,393 INFO L87 Difference]: Start difference. First operand has 822 states, 819 states have (on average 1.9768009768009769) internal successors, (1619), 821 states have internal predecessors, (1619), 0 states have call successors, (0), 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 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:54:15,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:54:15,507 INFO L93 Difference]: Finished difference Result 1616 states and 3185 transitions. [2023-12-16 00:54:15,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 00:54:15,511 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2023-12-16 00:54:15,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:54:15,531 INFO L225 Difference]: With dead ends: 1616 [2023-12-16 00:54:15,531 INFO L226 Difference]: Without dead ends: 818 [2023-12-16 00:54:15,539 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 [2023-12-16 00:54:15,543 INFO L413 NwaCegarLoop]: 1547 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, 1547 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 [2023-12-16 00:54:15,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1547 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:54:15,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states. [2023-12-16 00:54:15,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 818. [2023-12-16 00:54:15,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 818 states, 816 states have (on average 1.8970588235294117) internal successors, (1548), 817 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:54:15,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 818 states to 818 states and 1548 transitions. [2023-12-16 00:54:15,626 INFO L78 Accepts]: Start accepts. Automaton has 818 states and 1548 transitions. Word has length 19 [2023-12-16 00:54:15,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:54:15,626 INFO L495 AbstractCegarLoop]: Abstraction has 818 states and 1548 transitions. [2023-12-16 00:54:15,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:54:15,627 INFO L276 IsEmpty]: Start isEmpty. Operand 818 states and 1548 transitions. [2023-12-16 00:54:15,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-16 00:54:15,628 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:54:15,628 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:54:15,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-16 00:54:15,629 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:54:15,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:54:15,629 INFO L85 PathProgramCache]: Analyzing trace with hash -280101103, now seen corresponding path program 1 times [2023-12-16 00:54:15,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:54:15,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106576690] [2023-12-16 00:54:15,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:54:15,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:54:15,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:54:15,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:54:15,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:54:15,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106576690] [2023-12-16 00:54:15,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106576690] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:54:15,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:54:15,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 00:54:15,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239258197] [2023-12-16 00:54:15,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:54:15,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 00:54:15,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:54:15,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 00:54:15,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 00:54:15,754 INFO L87 Difference]: Start difference. First operand 818 states and 1548 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:54:18,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:54:18,996 INFO L93 Difference]: Finished difference Result 2322 states and 4421 transitions. [2023-12-16 00:54:18,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 00:54:18,997 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2023-12-16 00:54:18,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:54:19,004 INFO L225 Difference]: With dead ends: 2322 [2023-12-16 00:54:19,004 INFO L226 Difference]: Without dead ends: 1569 [2023-12-16 00:54:19,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 00:54:19,007 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 959 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2380 mSolverCounterSat, 711 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 959 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 3091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 711 IncrementalHoareTripleChecker+Valid, 2380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-16 00:54:19,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [959 Valid, 221 Invalid, 3091 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [711 Valid, 2380 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-16 00:54:19,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2023-12-16 00:54:19,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 1569. [2023-12-16 00:54:19,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1569 states, 1567 states have (on average 1.8423739629865985) internal successors, (2887), 1568 states have internal predecessors, (2887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:54:19,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 2887 transitions. [2023-12-16 00:54:19,046 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 2887 transitions. Word has length 19 [2023-12-16 00:54:19,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:54:19,046 INFO L495 AbstractCegarLoop]: Abstraction has 1569 states and 2887 transitions. [2023-12-16 00:54:19,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:54:19,047 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 2887 transitions. [2023-12-16 00:54:19,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-16 00:54:19,048 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:54:19,049 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:54:19,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-16 00:54:19,049 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:54:19,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:54:19,057 INFO L85 PathProgramCache]: Analyzing trace with hash 1690206650, now seen corresponding path program 1 times [2023-12-16 00:54:19,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:54:19,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678206255] [2023-12-16 00:54:19,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:54:19,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:54:19,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:54:19,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:54:19,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:54:19,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678206255] [2023-12-16 00:54:19,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678206255] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:54:19,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:54:19,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 00:54:19,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282152286] [2023-12-16 00:54:19,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:54:19,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 00:54:19,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:54:19,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 00:54:19,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 00:54:19,322 INFO L87 Difference]: Start difference. First operand 1569 states and 2887 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:54:19,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:54:19,382 INFO L93 Difference]: Finished difference Result 1609 states and 2949 transitions. [2023-12-16 00:54:19,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 00:54:19,383 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2023-12-16 00:54:19,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:54:19,388 INFO L225 Difference]: With dead ends: 1609 [2023-12-16 00:54:19,388 INFO L226 Difference]: Without dead ends: 1569 [2023-12-16 00:54:19,389 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 [2023-12-16 00:54:19,390 INFO L413 NwaCegarLoop]: 1545 mSDtfsCounter, 0 mSDsluCounter, 3063 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4608 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 00:54:19,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4608 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:54:19,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2023-12-16 00:54:19,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 1569. [2023-12-16 00:54:19,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1569 states, 1567 states have (on average 1.8276962348436503) internal successors, (2864), 1568 states have internal predecessors, (2864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:54:19,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 2864 transitions. [2023-12-16 00:54:19,415 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 2864 transitions. Word has length 19 [2023-12-16 00:54:19,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:54:19,416 INFO L495 AbstractCegarLoop]: Abstraction has 1569 states and 2864 transitions. [2023-12-16 00:54:19,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:54:19,416 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 2864 transitions. [2023-12-16 00:54:19,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-12-16 00:54:19,417 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:54:19,417 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] [2023-12-16 00:54:19,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-16 00:54:19,417 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:54:19,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:54:19,418 INFO L85 PathProgramCache]: Analyzing trace with hash 1827910901, now seen corresponding path program 1 times [2023-12-16 00:54:19,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:54:19,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550969240] [2023-12-16 00:54:19,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:54:19,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:54:19,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:54:19,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:54:19,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:54:19,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550969240] [2023-12-16 00:54:19,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550969240] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:54:19,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:54:19,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 00:54:19,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967423771] [2023-12-16 00:54:19,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:54:19,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 00:54:19,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:54:19,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 00:54:19,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-16 00:54:19,498 INFO L87 Difference]: Start difference. First operand 1569 states and 2864 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:54:19,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:54:19,644 INFO L93 Difference]: Finished difference Result 1865 states and 3336 transitions. [2023-12-16 00:54:19,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 00:54:19,645 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 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 41 [2023-12-16 00:54:19,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:54:19,651 INFO L225 Difference]: With dead ends: 1865 [2023-12-16 00:54:19,652 INFO L226 Difference]: Without dead ends: 1828 [2023-12-16 00:54:19,652 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-16 00:54:19,653 INFO L413 NwaCegarLoop]: 1516 mSDtfsCounter, 6269 mSDsluCounter, 591 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6269 SdHoareTripleChecker+Valid, 2107 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 00:54:19,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6269 Valid, 2107 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 00:54:19,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1828 states. [2023-12-16 00:54:19,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1828 to 1604. [2023-12-16 00:54:19,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1604 states, 1602 states have (on average 1.822721598002497) internal successors, (2920), 1603 states have internal predecessors, (2920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:54:19,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2920 transitions. [2023-12-16 00:54:19,686 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2920 transitions. Word has length 41 [2023-12-16 00:54:19,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:54:19,687 INFO L495 AbstractCegarLoop]: Abstraction has 1604 states and 2920 transitions. [2023-12-16 00:54:19,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:54:19,687 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2920 transitions. [2023-12-16 00:54:19,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-12-16 00:54:19,688 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:54:19,688 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] [2023-12-16 00:54:19,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-16 00:54:19,689 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:54:19,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:54:19,689 INFO L85 PathProgramCache]: Analyzing trace with hash -143781275, now seen corresponding path program 1 times [2023-12-16 00:54:19,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:54:19,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743287664] [2023-12-16 00:54:19,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:54:19,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:54:19,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:54:19,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:54:19,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:54:19,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743287664] [2023-12-16 00:54:19,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743287664] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:54:19,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:54:19,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 00:54:19,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099300070] [2023-12-16 00:54:19,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:54:19,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 00:54:19,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:54:19,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 00:54:19,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 00:54:19,775 INFO L87 Difference]: Start difference. First operand 1604 states and 2920 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:54:19,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:54:19,814 INFO L93 Difference]: Finished difference Result 1737 states and 3131 transitions. [2023-12-16 00:54:19,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 00:54:19,814 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2023-12-16 00:54:19,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:54:19,820 INFO L225 Difference]: With dead ends: 1737 [2023-12-16 00:54:19,820 INFO L226 Difference]: Without dead ends: 1665 [2023-12-16 00:54:19,821 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 [2023-12-16 00:54:19,822 INFO L413 NwaCegarLoop]: 1518 mSDtfsCounter, 1474 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1474 SdHoareTripleChecker+Valid, 1569 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 [2023-12-16 00:54:19,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1474 Valid, 1569 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:54:19,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1665 states. [2023-12-16 00:54:19,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1665 to 1661. [2023-12-16 00:54:19,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1661 states, 1659 states have (on average 1.8131404460518386) internal successors, (3008), 1660 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:54:19,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1661 states to 1661 states and 3008 transitions. [2023-12-16 00:54:19,855 INFO L78 Accepts]: Start accepts. Automaton has 1661 states and 3008 transitions. Word has length 43 [2023-12-16 00:54:19,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:54:19,855 INFO L495 AbstractCegarLoop]: Abstraction has 1661 states and 3008 transitions. [2023-12-16 00:54:19,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:54:19,855 INFO L276 IsEmpty]: Start isEmpty. Operand 1661 states and 3008 transitions. [2023-12-16 00:54:19,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-12-16 00:54:19,857 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:54:19,857 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] [2023-12-16 00:54:19,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-16 00:54:19,857 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:54:19,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:54:19,858 INFO L85 PathProgramCache]: Analyzing trace with hash -141636323, now seen corresponding path program 1 times [2023-12-16 00:54:19,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:54:19,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043868343] [2023-12-16 00:54:19,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:54:19,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:54:19,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:54:20,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:54:20,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:54:20,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043868343] [2023-12-16 00:54:20,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043868343] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:54:20,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:54:20,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 00:54:20,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974332418] [2023-12-16 00:54:20,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:54:20,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 00:54:20,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:54:20,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 00:54:20,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-16 00:54:20,020 INFO L87 Difference]: Start difference. First operand 1661 states and 3008 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:54:20,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:54:20,139 INFO L93 Difference]: Finished difference Result 1792 states and 3212 transitions. [2023-12-16 00:54:20,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 00:54:20,139 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2023-12-16 00:54:20,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:54:20,146 INFO L225 Difference]: With dead ends: 1792 [2023-12-16 00:54:20,146 INFO L226 Difference]: Without dead ends: 1663 [2023-12-16 00:54:20,146 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-12-16 00:54:20,147 INFO L413 NwaCegarLoop]: 1516 mSDtfsCounter, 2970 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2970 SdHoareTripleChecker+Valid, 1681 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 00:54:20,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2970 Valid, 1681 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:54:20,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1663 states. [2023-12-16 00:54:20,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1663 to 1661. [2023-12-16 00:54:20,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1661 states, 1659 states have (on average 1.8119349005424954) internal successors, (3006), 1660 states have internal predecessors, (3006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:54:20,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1661 states to 1661 states and 3006 transitions. [2023-12-16 00:54:20,187 INFO L78 Accepts]: Start accepts. Automaton has 1661 states and 3006 transitions. Word has length 43 [2023-12-16 00:54:20,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:54:20,188 INFO L495 AbstractCegarLoop]: Abstraction has 1661 states and 3006 transitions. [2023-12-16 00:54:20,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:54:20,188 INFO L276 IsEmpty]: Start isEmpty. Operand 1661 states and 3006 transitions. [2023-12-16 00:54:20,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-12-16 00:54:20,189 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:54:20,190 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] [2023-12-16 00:54:20,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-16 00:54:20,190 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:54:20,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:54:20,190 INFO L85 PathProgramCache]: Analyzing trace with hash -224171133, now seen corresponding path program 1 times [2023-12-16 00:54:20,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:54:20,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224457945] [2023-12-16 00:54:20,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:54:20,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:54:20,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:54:20,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:54:20,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:54:20,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224457945] [2023-12-16 00:54:20,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224457945] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:54:20,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:54:20,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 00:54:20,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488581399] [2023-12-16 00:54:20,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:54:20,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 00:54:20,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:54:20,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 00:54:20,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 00:54:20,326 INFO L87 Difference]: Start difference. First operand 1661 states and 3006 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:54:20,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:54:20,400 INFO L93 Difference]: Finished difference Result 1669 states and 3015 transitions. [2023-12-16 00:54:20,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 00:54:20,401 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2023-12-16 00:54:20,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:54:20,407 INFO L225 Difference]: With dead ends: 1669 [2023-12-16 00:54:20,407 INFO L226 Difference]: Without dead ends: 1667 [2023-12-16 00:54:20,408 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 [2023-12-16 00:54:20,409 INFO L413 NwaCegarLoop]: 1521 mSDtfsCounter, 1 mSDsluCounter, 3034 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4555 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 [2023-12-16 00:54:20,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4555 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:54:20,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1667 states. [2023-12-16 00:54:20,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1667 to 1665. [2023-12-16 00:54:20,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1665 states, 1663 states have (on average 1.809380637402285) internal successors, (3009), 1664 states have internal predecessors, (3009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:54:20,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1665 states to 1665 states and 3009 transitions. [2023-12-16 00:54:20,449 INFO L78 Accepts]: Start accepts. Automaton has 1665 states and 3009 transitions. Word has length 44 [2023-12-16 00:54:20,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:54:20,449 INFO L495 AbstractCegarLoop]: Abstraction has 1665 states and 3009 transitions. [2023-12-16 00:54:20,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:54:20,450 INFO L276 IsEmpty]: Start isEmpty. Operand 1665 states and 3009 transitions. [2023-12-16 00:54:20,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-16 00:54:20,451 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:54:20,451 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] [2023-12-16 00:54:20,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-16 00:54:20,451 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:54:20,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:54:20,452 INFO L85 PathProgramCache]: Analyzing trace with hash 339171325, now seen corresponding path program 1 times [2023-12-16 00:54:20,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:54:20,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664319925] [2023-12-16 00:54:20,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:54:20,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:54:20,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:54:20,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:54:20,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:54:20,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664319925] [2023-12-16 00:54:20,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664319925] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:54:20,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:54:20,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 00:54:20,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775406765] [2023-12-16 00:54:20,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:54:20,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 00:54:20,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:54:20,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 00:54:20,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 00:54:20,497 INFO L87 Difference]: Start difference. First operand 1665 states and 3009 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:54:20,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:54:20,535 INFO L93 Difference]: Finished difference Result 1915 states and 3389 transitions. [2023-12-16 00:54:20,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 00:54:20,535 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2023-12-16 00:54:20,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:54:20,544 INFO L225 Difference]: With dead ends: 1915 [2023-12-16 00:54:20,544 INFO L226 Difference]: Without dead ends: 1782 [2023-12-16 00:54:20,546 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 [2023-12-16 00:54:20,548 INFO L413 NwaCegarLoop]: 1557 mSDtfsCounter, 1485 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1485 SdHoareTripleChecker+Valid, 1620 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 [2023-12-16 00:54:20,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1485 Valid, 1620 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:54:20,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1782 states. [2023-12-16 00:54:20,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1782 to 1780. [2023-12-16 00:54:20,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1780 states, 1778 states have (on average 1.7885264341957254) internal successors, (3180), 1779 states have internal predecessors, (3180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:54:20,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1780 states to 1780 states and 3180 transitions. [2023-12-16 00:54:20,595 INFO L78 Accepts]: Start accepts. Automaton has 1780 states and 3180 transitions. Word has length 45 [2023-12-16 00:54:20,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:54:20,595 INFO L495 AbstractCegarLoop]: Abstraction has 1780 states and 3180 transitions. [2023-12-16 00:54:20,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:54:20,595 INFO L276 IsEmpty]: Start isEmpty. Operand 1780 states and 3180 transitions. [2023-12-16 00:54:20,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-16 00:54:20,596 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:54:20,596 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] [2023-12-16 00:54:20,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-16 00:54:20,596 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:54:20,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:54:20,597 INFO L85 PathProgramCache]: Analyzing trace with hash -286484739, now seen corresponding path program 1 times [2023-12-16 00:54:20,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:54:20,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258888110] [2023-12-16 00:54:20,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:54:20,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:54:20,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:54:20,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:54:20,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:54:20,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258888110] [2023-12-16 00:54:20,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258888110] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:54:20,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:54:20,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 00:54:20,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964724178] [2023-12-16 00:54:20,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:54:20,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 00:54:20,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:54:20,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 00:54:20,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 00:54:20,652 INFO L87 Difference]: Start difference. First operand 1780 states and 3180 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:54:20,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:54:20,693 INFO L93 Difference]: Finished difference Result 2244 states and 3874 transitions. [2023-12-16 00:54:20,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 00:54:20,694 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2023-12-16 00:54:20,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:54:20,702 INFO L225 Difference]: With dead ends: 2244 [2023-12-16 00:54:20,704 INFO L226 Difference]: Without dead ends: 1996 [2023-12-16 00:54:20,705 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 [2023-12-16 00:54:20,708 INFO L413 NwaCegarLoop]: 1555 mSDtfsCounter, 1483 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1483 SdHoareTripleChecker+Valid, 1622 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 [2023-12-16 00:54:20,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1483 Valid, 1622 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:54:20,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1996 states. [2023-12-16 00:54:20,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1996 to 1994. [2023-12-16 00:54:20,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1994 states, 1992 states have (on average 1.752008032128514) internal successors, (3490), 1993 states have internal predecessors, (3490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:54:20,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1994 states to 1994 states and 3490 transitions. [2023-12-16 00:54:20,762 INFO L78 Accepts]: Start accepts. Automaton has 1994 states and 3490 transitions. Word has length 45 [2023-12-16 00:54:20,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:54:20,763 INFO L495 AbstractCegarLoop]: Abstraction has 1994 states and 3490 transitions. [2023-12-16 00:54:20,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:54:20,763 INFO L276 IsEmpty]: Start isEmpty. Operand 1994 states and 3490 transitions. [2023-12-16 00:54:20,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-16 00:54:20,764 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:54:20,764 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:54:20,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-16 00:54:20,764 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:54:20,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:54:20,765 INFO L85 PathProgramCache]: Analyzing trace with hash 602248701, now seen corresponding path program 1 times [2023-12-16 00:54:20,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:54:20,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197043277] [2023-12-16 00:54:20,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:54:20,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:54:20,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:54:20,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:54:20,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:54:20,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197043277] [2023-12-16 00:54:20,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197043277] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:54:20,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:54:20,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 00:54:20,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270723300] [2023-12-16 00:54:20,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:54:20,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 00:54:20,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:54:20,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 00:54:20,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 00:54:20,824 INFO L87 Difference]: Start difference. First operand 1994 states and 3490 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:54:20,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:54:20,872 INFO L93 Difference]: Finished difference Result 2854 states and 4748 transitions. [2023-12-16 00:54:20,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 00:54:20,873 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2023-12-16 00:54:20,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:54:20,882 INFO L225 Difference]: With dead ends: 2854 [2023-12-16 00:54:20,882 INFO L226 Difference]: Without dead ends: 2392 [2023-12-16 00:54:20,884 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 [2023-12-16 00:54:20,884 INFO L413 NwaCegarLoop]: 1553 mSDtfsCounter, 1481 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1481 SdHoareTripleChecker+Valid, 1624 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 [2023-12-16 00:54:20,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1481 Valid, 1624 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:54:20,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2392 states. [2023-12-16 00:54:20,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2392 to 2390. [2023-12-16 00:54:20,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2390 states, 2388 states have (on average 1.6943048576214406) internal successors, (4046), 2389 states have internal predecessors, (4046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:54:20,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2390 states to 2390 states and 4046 transitions. [2023-12-16 00:54:20,958 INFO L78 Accepts]: Start accepts. Automaton has 2390 states and 4046 transitions. Word has length 45 [2023-12-16 00:54:20,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:54:20,959 INFO L495 AbstractCegarLoop]: Abstraction has 2390 states and 4046 transitions. [2023-12-16 00:54:20,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:54:20,959 INFO L276 IsEmpty]: Start isEmpty. Operand 2390 states and 4046 transitions. [2023-12-16 00:54:20,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-12-16 00:54:20,960 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:54:20,960 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:54:20,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-16 00:54:20,960 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:54:20,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:54:20,961 INFO L85 PathProgramCache]: Analyzing trace with hash 1358107618, now seen corresponding path program 1 times [2023-12-16 00:54:20,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:54:20,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491890884] [2023-12-16 00:54:20,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:54:20,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:54:20,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:54:21,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:54:21,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:54:21,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491890884] [2023-12-16 00:54:21,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491890884] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:54:21,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:54:21,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 00:54:21,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172189180] [2023-12-16 00:54:21,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:54:21,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 00:54:21,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:54:21,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 00:54:21,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 00:54:21,006 INFO L87 Difference]: Start difference. First operand 2390 states and 4046 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:54:21,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:54:21,055 INFO L93 Difference]: Finished difference Result 3293 states and 5380 transitions. [2023-12-16 00:54:21,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 00:54:21,056 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2023-12-16 00:54:21,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:54:21,065 INFO L225 Difference]: With dead ends: 3293 [2023-12-16 00:54:21,065 INFO L226 Difference]: Without dead ends: 2794 [2023-12-16 00:54:21,067 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 [2023-12-16 00:54:21,068 INFO L413 NwaCegarLoop]: 1562 mSDtfsCounter, 1484 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1484 SdHoareTripleChecker+Valid, 1621 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 [2023-12-16 00:54:21,068 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1484 Valid, 1621 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:54:21,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2794 states. [2023-12-16 00:54:21,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2794 to 2792. [2023-12-16 00:54:21,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2792 states, 2790 states have (on average 1.6544802867383512) internal successors, (4616), 2791 states have internal predecessors, (4616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:54:21,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2792 states to 2792 states and 4616 transitions. [2023-12-16 00:54:21,135 INFO L78 Accepts]: Start accepts. Automaton has 2792 states and 4616 transitions. Word has length 47 [2023-12-16 00:54:21,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:54:21,135 INFO L495 AbstractCegarLoop]: Abstraction has 2792 states and 4616 transitions. [2023-12-16 00:54:21,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:54:21,136 INFO L276 IsEmpty]: Start isEmpty. Operand 2792 states and 4616 transitions. [2023-12-16 00:54:21,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-16 00:54:21,137 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:54:21,137 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] [2023-12-16 00:54:21,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-16 00:54:21,137 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:54:21,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:54:21,138 INFO L85 PathProgramCache]: Analyzing trace with hash 445025325, now seen corresponding path program 1 times [2023-12-16 00:54:21,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:54:21,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065340471] [2023-12-16 00:54:21,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:54:21,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:54:21,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:54:21,263 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-16 00:54:21,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:54:21,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065340471] [2023-12-16 00:54:21,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065340471] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:54:21,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:54:21,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 00:54:21,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500781727] [2023-12-16 00:54:21,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:54:21,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 00:54:21,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:54:21,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 00:54:21,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-16 00:54:21,265 INFO L87 Difference]: Start difference. First operand 2792 states and 4616 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:54:21,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:54:21,456 INFO L93 Difference]: Finished difference Result 8098 states and 12229 transitions. [2023-12-16 00:54:21,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 00:54:21,458 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 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 61 [2023-12-16 00:54:21,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:54:21,493 INFO L225 Difference]: With dead ends: 8098 [2023-12-16 00:54:21,493 INFO L226 Difference]: Without dead ends: 6840 [2023-12-16 00:54:21,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-16 00:54:21,499 INFO L413 NwaCegarLoop]: 1574 mSDtfsCounter, 4657 mSDsluCounter, 1755 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4657 SdHoareTripleChecker+Valid, 3329 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 00:54:21,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4657 Valid, 3329 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:54:21,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6840 states. [2023-12-16 00:54:21,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6840 to 4048. [2023-12-16 00:54:21,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4048 states, 4046 states have (on average 1.5818091942659416) internal successors, (6400), 4047 states have internal predecessors, (6400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:54:21,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4048 states to 4048 states and 6400 transitions. [2023-12-16 00:54:21,645 INFO L78 Accepts]: Start accepts. Automaton has 4048 states and 6400 transitions. Word has length 61 [2023-12-16 00:54:21,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:54:21,645 INFO L495 AbstractCegarLoop]: Abstraction has 4048 states and 6400 transitions. [2023-12-16 00:54:21,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:54:21,646 INFO L276 IsEmpty]: Start isEmpty. Operand 4048 states and 6400 transitions. [2023-12-16 00:54:21,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-16 00:54:21,647 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:54:21,648 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] [2023-12-16 00:54:21,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-16 00:54:21,648 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:54:21,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:54:21,649 INFO L85 PathProgramCache]: Analyzing trace with hash -180630739, now seen corresponding path program 1 times [2023-12-16 00:54:21,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:54:21,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508953532] [2023-12-16 00:54:21,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:54:21,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:54:21,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:54:21,753 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-16 00:54:21,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:54:21,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508953532] [2023-12-16 00:54:21,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508953532] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:54:21,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:54:21,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 00:54:21,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020784193] [2023-12-16 00:54:21,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:54:21,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 00:54:21,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:54:21,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 00:54:21,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-16 00:54:21,756 INFO L87 Difference]: Start difference. First operand 4048 states and 6400 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:54:22,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:54:22,004 INFO L93 Difference]: Finished difference Result 9354 states and 14013 transitions. [2023-12-16 00:54:22,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 00:54:22,004 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2023-12-16 00:54:22,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:54:22,018 INFO L225 Difference]: With dead ends: 9354 [2023-12-16 00:54:22,019 INFO L226 Difference]: Without dead ends: 8096 [2023-12-16 00:54:22,023 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-16 00:54:22,024 INFO L413 NwaCegarLoop]: 1571 mSDtfsCounter, 4677 mSDsluCounter, 1728 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4677 SdHoareTripleChecker+Valid, 3299 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 00:54:22,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4677 Valid, 3299 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 00:54:22,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8096 states. [2023-12-16 00:54:22,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8096 to 5936. [2023-12-16 00:54:22,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5936 states, 5934 states have (on average 1.5261206605999327) internal successors, (9056), 5935 states have internal predecessors, (9056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:54:22,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5936 states to 5936 states and 9056 transitions. [2023-12-16 00:54:22,193 INFO L78 Accepts]: Start accepts. Automaton has 5936 states and 9056 transitions. Word has length 61 [2023-12-16 00:54:22,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:54:22,193 INFO L495 AbstractCegarLoop]: Abstraction has 5936 states and 9056 transitions. [2023-12-16 00:54:22,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:54:22,194 INFO L276 IsEmpty]: Start isEmpty. Operand 5936 states and 9056 transitions. [2023-12-16 00:54:22,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-16 00:54:22,195 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:54:22,195 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] [2023-12-16 00:54:22,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-16 00:54:22,195 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:54:22,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:54:22,196 INFO L85 PathProgramCache]: Analyzing trace with hash 708102701, now seen corresponding path program 1 times [2023-12-16 00:54:22,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:54:22,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529915734] [2023-12-16 00:54:22,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:54:22,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:54:22,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:54:22,294 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-16 00:54:22,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:54:22,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529915734] [2023-12-16 00:54:22,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529915734] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:54:22,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:54:22,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 00:54:22,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119264833] [2023-12-16 00:54:22,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:54:22,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 00:54:22,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:54:22,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 00:54:22,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-16 00:54:22,296 INFO L87 Difference]: Start difference. First operand 5936 states and 9056 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:54:22,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:54:22,546 INFO L93 Difference]: Finished difference Result 10610 states and 15797 transitions. [2023-12-16 00:54:22,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 00:54:22,547 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2023-12-16 00:54:22,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:54:22,563 INFO L225 Difference]: With dead ends: 10610 [2023-12-16 00:54:22,563 INFO L226 Difference]: Without dead ends: 9352 [2023-12-16 00:54:22,568 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-16 00:54:22,569 INFO L413 NwaCegarLoop]: 1573 mSDtfsCounter, 4663 mSDsluCounter, 1743 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4663 SdHoareTripleChecker+Valid, 3316 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 00:54:22,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4663 Valid, 3316 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 00:54:22,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9352 states. [2023-12-16 00:54:22,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9352 to 7192. [2023-12-16 00:54:22,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7192 states, 7190 states have (on average 1.5076495132127956) internal successors, (10840), 7191 states have internal predecessors, (10840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:54:22,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7192 states to 7192 states and 10840 transitions. [2023-12-16 00:54:22,789 INFO L78 Accepts]: Start accepts. Automaton has 7192 states and 10840 transitions. Word has length 61 [2023-12-16 00:54:22,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:54:22,789 INFO L495 AbstractCegarLoop]: Abstraction has 7192 states and 10840 transitions. [2023-12-16 00:54:22,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:54:22,789 INFO L276 IsEmpty]: Start isEmpty. Operand 7192 states and 10840 transitions. [2023-12-16 00:54:22,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-16 00:54:22,791 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:54:22,791 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] [2023-12-16 00:54:22,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-16 00:54:22,791 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:54:22,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:54:22,791 INFO L85 PathProgramCache]: Analyzing trace with hash -1949780395, now seen corresponding path program 1 times [2023-12-16 00:54:22,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:54:22,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010883443] [2023-12-16 00:54:22,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:54:22,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:54:22,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:54:22,897 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:54:22,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:54:22,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010883443] [2023-12-16 00:54:22,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010883443] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:54:22,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:54:22,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 00:54:22,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960482624] [2023-12-16 00:54:22,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:54:22,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 00:54:22,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:54:22,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 00:54:22,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 00:54:22,899 INFO L87 Difference]: Start difference. First operand 7192 states and 10840 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:54:23,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:54:23,003 INFO L93 Difference]: Finished difference Result 11245 states and 16692 transitions. [2023-12-16 00:54:23,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 00:54:23,004 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2023-12-16 00:54:23,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:54:23,014 INFO L225 Difference]: With dead ends: 11245 [2023-12-16 00:54:23,014 INFO L226 Difference]: Without dead ends: 5587 [2023-12-16 00:54:23,023 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 [2023-12-16 00:54:23,024 INFO L413 NwaCegarLoop]: 1554 mSDtfsCounter, 42 mSDsluCounter, 1508 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 3062 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 [2023-12-16 00:54:23,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 3062 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:54:23,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5587 states. [2023-12-16 00:54:23,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5587 to 5585. [2023-12-16 00:54:23,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5585 states, 5583 states have (on average 1.537703743507075) internal successors, (8585), 5584 states have internal predecessors, (8585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:54:23,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5585 states to 5585 states and 8585 transitions. [2023-12-16 00:54:23,171 INFO L78 Accepts]: Start accepts. Automaton has 5585 states and 8585 transitions. Word has length 63 [2023-12-16 00:54:23,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:54:23,171 INFO L495 AbstractCegarLoop]: Abstraction has 5585 states and 8585 transitions. [2023-12-16 00:54:23,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:54:23,172 INFO L276 IsEmpty]: Start isEmpty. Operand 5585 states and 8585 transitions. [2023-12-16 00:54:23,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-16 00:54:23,176 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:54:23,176 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] [2023-12-16 00:54:23,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-16 00:54:23,177 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:54:23,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:54:23,177 INFO L85 PathProgramCache]: Analyzing trace with hash 4586514, now seen corresponding path program 1 times [2023-12-16 00:54:23,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:54:23,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315038136] [2023-12-16 00:54:23,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:54:23,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:54:23,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:54:23,316 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-16 00:54:23,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:54:23,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315038136] [2023-12-16 00:54:23,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315038136] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:54:23,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:54:23,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 00:54:23,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669166709] [2023-12-16 00:54:23,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:54:23,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 00:54:23,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:54:23,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 00:54:23,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-16 00:54:23,319 INFO L87 Difference]: Start difference. First operand 5585 states and 8585 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 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) [2023-12-16 00:54:23,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:54:23,534 INFO L93 Difference]: Finished difference Result 9179 states and 13774 transitions. [2023-12-16 00:54:23,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 00:54:23,534 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 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 63 [2023-12-16 00:54:23,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:54:23,549 INFO L225 Difference]: With dead ends: 9179 [2023-12-16 00:54:23,549 INFO L226 Difference]: Without dead ends: 8281 [2023-12-16 00:54:23,553 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-16 00:54:23,553 INFO L413 NwaCegarLoop]: 1569 mSDtfsCounter, 4657 mSDsluCounter, 1799 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4657 SdHoareTripleChecker+Valid, 3368 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 00:54:23,554 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4657 Valid, 3368 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 00:54:23,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8281 states. [2023-12-16 00:54:23,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8281 to 6481. [2023-12-16 00:54:23,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6481 states, 6479 states have (on average 1.5226115141225498) internal successors, (9865), 6480 states have internal predecessors, (9865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:54:23,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6481 states to 6481 states and 9865 transitions. [2023-12-16 00:54:23,734 INFO L78 Accepts]: Start accepts. Automaton has 6481 states and 9865 transitions. Word has length 63 [2023-12-16 00:54:23,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:54:23,734 INFO L495 AbstractCegarLoop]: Abstraction has 6481 states and 9865 transitions. [2023-12-16 00:54:23,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 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) [2023-12-16 00:54:23,734 INFO L276 IsEmpty]: Start isEmpty. Operand 6481 states and 9865 transitions. [2023-12-16 00:54:23,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-16 00:54:23,735 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:54:23,735 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] [2023-12-16 00:54:23,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-16 00:54:23,736 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:54:23,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:54:23,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1055056157, now seen corresponding path program 1 times [2023-12-16 00:54:23,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:54:23,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332348595] [2023-12-16 00:54:23,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:54:23,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:54:23,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:54:23,826 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:54:23,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:54:23,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332348595] [2023-12-16 00:54:23,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332348595] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:54:23,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:54:23,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 00:54:23,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134514343] [2023-12-16 00:54:23,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:54:23,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 00:54:23,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:54:23,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 00:54:23,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 00:54:23,828 INFO L87 Difference]: Start difference. First operand 6481 states and 9865 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) [2023-12-16 00:54:23,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:54:23,904 INFO L93 Difference]: Finished difference Result 8949 states and 13387 transitions. [2023-12-16 00:54:23,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 00:54:23,905 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 [2023-12-16 00:54:23,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:54:23,912 INFO L225 Difference]: With dead ends: 8949 [2023-12-16 00:54:23,912 INFO L226 Difference]: Without dead ends: 4019 [2023-12-16 00:54:23,918 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 [2023-12-16 00:54:23,919 INFO L413 NwaCegarLoop]: 1547 mSDtfsCounter, 37 mSDsluCounter, 1500 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 3047 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 [2023-12-16 00:54:23,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 3047 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:54:23,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4019 states. [2023-12-16 00:54:24,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4019 to 4017. [2023-12-16 00:54:24,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4017 states, 4015 states have (on average 1.5693648816936487) internal successors, (6301), 4016 states have internal predecessors, (6301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:54:24,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4017 states to 4017 states and 6301 transitions. [2023-12-16 00:54:24,014 INFO L78 Accepts]: Start accepts. Automaton has 4017 states and 6301 transitions. Word has length 64 [2023-12-16 00:54:24,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:54:24,014 INFO L495 AbstractCegarLoop]: Abstraction has 4017 states and 6301 transitions. [2023-12-16 00:54:24,015 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) [2023-12-16 00:54:24,015 INFO L276 IsEmpty]: Start isEmpty. Operand 4017 states and 6301 transitions. [2023-12-16 00:54:24,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-16 00:54:24,016 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:54:24,016 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] [2023-12-16 00:54:24,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-16 00:54:24,016 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:54:24,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:54:24,016 INFO L85 PathProgramCache]: Analyzing trace with hash 1300219787, now seen corresponding path program 1 times [2023-12-16 00:54:24,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:54:24,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486144440] [2023-12-16 00:54:24,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:54:24,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:54:24,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:54:24,091 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:54:24,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:54:24,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486144440] [2023-12-16 00:54:24,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486144440] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:54:24,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:54:24,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 00:54:24,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463810815] [2023-12-16 00:54:24,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:54:24,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 00:54:24,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:54:24,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 00:54:24,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 00:54:24,093 INFO L87 Difference]: Start difference. First operand 4017 states and 6301 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) [2023-12-16 00:54:24,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:54:24,148 INFO L93 Difference]: Finished difference Result 5253 states and 8041 transitions. [2023-12-16 00:54:24,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 00:54:24,149 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 [2023-12-16 00:54:24,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:54:24,154 INFO L225 Difference]: With dead ends: 5253 [2023-12-16 00:54:24,154 INFO L226 Difference]: Without dead ends: 2787 [2023-12-16 00:54:24,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 00:54:24,157 INFO L413 NwaCegarLoop]: 1540 mSDtfsCounter, 34 mSDsluCounter, 1492 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 3032 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 [2023-12-16 00:54:24,157 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 3032 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:54:24,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2787 states. [2023-12-16 00:54:24,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2787 to 2785. [2023-12-16 00:54:24,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2785 states, 2783 states have (on average 1.6316924182536832) internal successors, (4541), 2784 states have internal predecessors, (4541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:54:24,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2785 states to 2785 states and 4541 transitions. [2023-12-16 00:54:24,216 INFO L78 Accepts]: Start accepts. Automaton has 2785 states and 4541 transitions. Word has length 66 [2023-12-16 00:54:24,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:54:24,217 INFO L495 AbstractCegarLoop]: Abstraction has 2785 states and 4541 transitions. [2023-12-16 00:54:24,217 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) [2023-12-16 00:54:24,217 INFO L276 IsEmpty]: Start isEmpty. Operand 2785 states and 4541 transitions. [2023-12-16 00:54:24,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-16 00:54:24,217 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:54:24,218 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] [2023-12-16 00:54:24,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-16 00:54:24,218 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:54:24,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:54:24,218 INFO L85 PathProgramCache]: Analyzing trace with hash 925871993, now seen corresponding path program 1 times [2023-12-16 00:54:24,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:54:24,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409081204] [2023-12-16 00:54:24,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:54:24,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:54:24,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:54:24,296 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:54:24,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:54:24,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409081204] [2023-12-16 00:54:24,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409081204] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:54:24,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:54:24,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 00:54:24,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676782323] [2023-12-16 00:54:24,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:54:24,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 00:54:24,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:54:24,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 00:54:24,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 00:54:24,298 INFO L87 Difference]: Start difference. First operand 2785 states and 4541 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) [2023-12-16 00:54:24,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:54:24,336 INFO L93 Difference]: Finished difference Result 3405 states and 5401 transitions. [2023-12-16 00:54:24,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 00:54:24,337 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 [2023-12-16 00:54:24,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:54:24,340 INFO L225 Difference]: With dead ends: 3405 [2023-12-16 00:54:24,340 INFO L226 Difference]: Without dead ends: 2171 [2023-12-16 00:54:24,342 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 [2023-12-16 00:54:24,342 INFO L413 NwaCegarLoop]: 1533 mSDtfsCounter, 31 mSDsluCounter, 1484 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 3017 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 [2023-12-16 00:54:24,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 3017 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:54:24,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2171 states. [2023-12-16 00:54:24,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2171 to 2169. [2023-12-16 00:54:24,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2169 states, 2167 states have (on average 1.694508537148131) internal successors, (3672), 2168 states have internal predecessors, (3672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:54:24,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2169 states to 2169 states and 3672 transitions. [2023-12-16 00:54:24,386 INFO L78 Accepts]: Start accepts. Automaton has 2169 states and 3672 transitions. Word has length 68 [2023-12-16 00:54:24,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:54:24,386 INFO L495 AbstractCegarLoop]: Abstraction has 2169 states and 3672 transitions. [2023-12-16 00:54:24,386 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) [2023-12-16 00:54:24,386 INFO L276 IsEmpty]: Start isEmpty. Operand 2169 states and 3672 transitions. [2023-12-16 00:54:24,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-12-16 00:54:24,387 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:54:24,387 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:54:24,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-16 00:54:24,387 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:54:24,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:54:24,388 INFO L85 PathProgramCache]: Analyzing trace with hash -324175641, now seen corresponding path program 1 times [2023-12-16 00:54:24,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:54:24,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136086807] [2023-12-16 00:54:24,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:54:24,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:54:24,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:54:25,935 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:54:25,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:54:25,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136086807] [2023-12-16 00:54:25,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136086807] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 00:54:25,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1734185710] [2023-12-16 00:54:25,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:54:25,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:54:25,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:54:25,942 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) [2023-12-16 00:54:25,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-16 00:54:26,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:54:26,112 INFO L262 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-16 00:54:26,117 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 00:54:26,294 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-16 00:54:26,294 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 00:54:26,446 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-16 00:54:26,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1734185710] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 00:54:26,447 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 00:54:26,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 4] total 18 [2023-12-16 00:54:26,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269465263] [2023-12-16 00:54:26,447 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 00:54:26,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-16 00:54:26,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:54:26,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-16 00:54:26,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2023-12-16 00:54:26,448 INFO L87 Difference]: Start difference. First operand 2169 states and 3672 transitions. Second operand has 18 states, 18 states have (on average 10.88888888888889) internal successors, (196), 18 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:54:28,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:54:28,863 INFO L93 Difference]: Finished difference Result 6492 states and 9419 transitions. [2023-12-16 00:54:28,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-12-16 00:54:28,864 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 10.88888888888889) internal successors, (196), 18 states have internal predecessors, (196), 0 states have call successors, (0), 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 70 [2023-12-16 00:54:28,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:54:28,875 INFO L225 Difference]: With dead ends: 6492 [2023-12-16 00:54:28,876 INFO L226 Difference]: Without dead ends: 5874 [2023-12-16 00:54:28,880 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1055 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=689, Invalid=2971, Unknown=0, NotChecked=0, Total=3660 [2023-12-16 00:54:28,880 INFO L413 NwaCegarLoop]: 1506 mSDtfsCounter, 17626 mSDsluCounter, 6295 mSDsCounter, 0 mSdLazyCounter, 722 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17626 SdHoareTripleChecker+Valid, 7801 SdHoareTripleChecker+Invalid, 774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 00:54:28,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17626 Valid, 7801 Invalid, 774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 722 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 00:54:28,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5874 states. [2023-12-16 00:54:29,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5874 to 5630. [2023-12-16 00:54:29,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5630 states, 5628 states have (on average 1.4305259417199716) internal successors, (8051), 5629 states have internal predecessors, (8051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:54:29,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5630 states to 5630 states and 8051 transitions. [2023-12-16 00:54:29,042 INFO L78 Accepts]: Start accepts. Automaton has 5630 states and 8051 transitions. Word has length 70 [2023-12-16 00:54:29,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:54:29,043 INFO L495 AbstractCegarLoop]: Abstraction has 5630 states and 8051 transitions. [2023-12-16 00:54:29,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 10.88888888888889) internal successors, (196), 18 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:54:29,043 INFO L276 IsEmpty]: Start isEmpty. Operand 5630 states and 8051 transitions. [2023-12-16 00:54:29,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-16 00:54:29,044 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:54:29,044 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] [2023-12-16 00:54:29,058 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-16 00:54:29,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:54:29,251 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:54:29,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:54:29,252 INFO L85 PathProgramCache]: Analyzing trace with hash -2128128912, now seen corresponding path program 1 times [2023-12-16 00:54:29,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:54:29,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674403660] [2023-12-16 00:54:29,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:54:29,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:54:29,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:54:31,160 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:54:31,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:54:31,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674403660] [2023-12-16 00:54:31,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674403660] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 00:54:31,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [644324067] [2023-12-16 00:54:31,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:54:31,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:54:31,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:54:31,169 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) [2023-12-16 00:54:31,172 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-16 00:54:31,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:54:31,265 INFO L262 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-16 00:54:31,267 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 00:54:31,636 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:54:31,636 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 00:54:32,480 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:54:32,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [644324067] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 00:54:32,481 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 00:54:32,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 27 [2023-12-16 00:54:32,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9642625] [2023-12-16 00:54:32,484 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 00:54:32,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-16 00:54:32,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:54:32,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-16 00:54:32,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=656, Unknown=0, NotChecked=0, Total=756 [2023-12-16 00:54:32,485 INFO L87 Difference]: Start difference. First operand 5630 states and 8051 transitions. Second operand has 28 states, 28 states have (on average 6.5) internal successors, (182), 27 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:54:34,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:54:34,380 INFO L93 Difference]: Finished difference Result 23284 states and 30570 transitions. [2023-12-16 00:54:34,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-16 00:54:34,381 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 6.5) internal successors, (182), 27 states have internal predecessors, (182), 0 states have call successors, (0), 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 71 [2023-12-16 00:54:34,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:54:34,415 INFO L225 Difference]: With dead ends: 23284 [2023-12-16 00:54:34,415 INFO L226 Difference]: Without dead ends: 19698 [2023-12-16 00:54:34,426 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 679 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=565, Invalid=2515, Unknown=0, NotChecked=0, Total=3080 [2023-12-16 00:54:34,427 INFO L413 NwaCegarLoop]: 1497 mSDtfsCounter, 26373 mSDsluCounter, 7953 mSDsCounter, 0 mSdLazyCounter, 769 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26373 SdHoareTripleChecker+Valid, 9450 SdHoareTripleChecker+Invalid, 816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 769 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 00:54:34,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26373 Valid, 9450 Invalid, 816 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [47 Valid, 769 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 00:54:34,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19698 states. [2023-12-16 00:54:35,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19698 to 17580. [2023-12-16 00:54:35,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17580 states, 17578 states have (on average 1.3247809762202754) internal successors, (23287), 17579 states have internal predecessors, (23287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:54:35,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17580 states to 17580 states and 23287 transitions. [2023-12-16 00:54:35,159 INFO L78 Accepts]: Start accepts. Automaton has 17580 states and 23287 transitions. Word has length 71 [2023-12-16 00:54:35,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:54:35,159 INFO L495 AbstractCegarLoop]: Abstraction has 17580 states and 23287 transitions. [2023-12-16 00:54:35,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 6.5) internal successors, (182), 27 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:54:35,159 INFO L276 IsEmpty]: Start isEmpty. Operand 17580 states and 23287 transitions. [2023-12-16 00:54:35,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-16 00:54:35,161 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:54:35,161 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] [2023-12-16 00:54:35,171 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-16 00:54:35,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-12-16 00:54:35,368 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:54:35,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:54:35,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1140000624, now seen corresponding path program 1 times [2023-12-16 00:54:35,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:54:35,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994631721] [2023-12-16 00:54:35,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:54:35,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:54:35,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:54:35,650 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:54:35,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:54:35,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994631721] [2023-12-16 00:54:35,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994631721] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 00:54:35,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1099634866] [2023-12-16 00:54:35,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:54:35,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:54:35,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:54:35,652 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) [2023-12-16 00:54:35,678 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-16 00:54:35,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:54:35,759 INFO L262 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-16 00:54:35,761 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 00:54:36,692 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:54:36,692 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 00:54:37,861 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:54:37,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1099634866] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 00:54:37,862 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 00:54:37,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 11] total 28 [2023-12-16 00:54:37,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013778440] [2023-12-16 00:54:37,862 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 00:54:37,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-16 00:54:37,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:54:37,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-16 00:54:37,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=664, Unknown=0, NotChecked=0, Total=756 [2023-12-16 00:54:37,864 INFO L87 Difference]: Start difference. First operand 17580 states and 23287 transitions. Second operand has 28 states, 28 states have (on average 6.285714285714286) internal successors, (176), 28 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:54:40,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:54:40,015 INFO L93 Difference]: Finished difference Result 35020 states and 45536 transitions. [2023-12-16 00:54:40,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-12-16 00:54:40,017 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 6.285714285714286) internal successors, (176), 28 states have internal predecessors, (176), 0 states have call successors, (0), 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 71 [2023-12-16 00:54:40,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:54:40,049 INFO L225 Difference]: With dead ends: 35020 [2023-12-16 00:54:40,049 INFO L226 Difference]: Without dead ends: 19773 [2023-12-16 00:54:40,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 952 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=763, Invalid=3269, Unknown=0, NotChecked=0, Total=4032 [2023-12-16 00:54:40,069 INFO L413 NwaCegarLoop]: 1494 mSDtfsCounter, 11746 mSDsluCounter, 16637 mSDsCounter, 0 mSdLazyCounter, 785 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11746 SdHoareTripleChecker+Valid, 18131 SdHoareTripleChecker+Invalid, 825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 785 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 00:54:40,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11746 Valid, 18131 Invalid, 825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 785 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 00:54:40,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19773 states. [2023-12-16 00:54:40,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19773 to 12174. [2023-12-16 00:54:40,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12174 states, 12172 states have (on average 1.333963194216234) internal successors, (16237), 12173 states have internal predecessors, (16237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:54:40,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12174 states to 12174 states and 16237 transitions. [2023-12-16 00:54:40,495 INFO L78 Accepts]: Start accepts. Automaton has 12174 states and 16237 transitions. Word has length 71 [2023-12-16 00:54:40,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:54:40,496 INFO L495 AbstractCegarLoop]: Abstraction has 12174 states and 16237 transitions. [2023-12-16 00:54:40,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 6.285714285714286) internal successors, (176), 28 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:54:40,496 INFO L276 IsEmpty]: Start isEmpty. Operand 12174 states and 16237 transitions. [2023-12-16 00:54:40,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-16 00:54:40,497 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:54:40,497 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] [2023-12-16 00:54:40,506 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-16 00:54:40,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:54:40,707 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:54:40,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:54:40,707 INFO L85 PathProgramCache]: Analyzing trace with hash -530731481, now seen corresponding path program 1 times [2023-12-16 00:54:40,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:54:40,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891847851] [2023-12-16 00:54:40,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:54:40,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:54:40,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:54:41,080 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:54:41,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:54:41,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891847851] [2023-12-16 00:54:41,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891847851] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 00:54:41,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [728712700] [2023-12-16 00:54:41,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:54:41,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:54:41,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:54:41,083 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) [2023-12-16 00:54:41,104 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-16 00:54:41,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:54:41,184 INFO L262 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-16 00:54:41,186 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 00:54:41,694 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:54:41,694 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 00:54:42,429 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:54:42,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [728712700] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 00:54:42,429 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 00:54:42,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 31 [2023-12-16 00:54:42,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124907145] [2023-12-16 00:54:42,430 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 00:54:42,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-16 00:54:42,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:54:42,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-16 00:54:42,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=796, Unknown=0, NotChecked=0, Total=930 [2023-12-16 00:54:42,433 INFO L87 Difference]: Start difference. First operand 12174 states and 16237 transitions. Second operand has 31 states, 31 states have (on average 6.32258064516129) internal successors, (196), 31 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:54:45,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:54:45,306 INFO L93 Difference]: Finished difference Result 39419 states and 50496 transitions. [2023-12-16 00:54:45,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-12-16 00:54:45,307 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 6.32258064516129) internal successors, (196), 31 states have internal predecessors, (196), 0 states have call successors, (0), 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 72 [2023-12-16 00:54:45,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:54:45,350 INFO L225 Difference]: With dead ends: 39419 [2023-12-16 00:54:45,350 INFO L226 Difference]: Without dead ends: 29493 [2023-12-16 00:54:45,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 892 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=796, Invalid=3236, Unknown=0, NotChecked=0, Total=4032 [2023-12-16 00:54:45,364 INFO L413 NwaCegarLoop]: 1512 mSDtfsCounter, 13972 mSDsluCounter, 8190 mSDsCounter, 0 mSdLazyCounter, 974 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13972 SdHoareTripleChecker+Valid, 9702 SdHoareTripleChecker+Invalid, 1009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 974 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 00:54:45,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13972 Valid, 9702 Invalid, 1009 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 974 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 00:54:45,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29493 states. [2023-12-16 00:54:46,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29493 to 16037. [2023-12-16 00:54:46,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16037 states, 16035 states have (on average 1.2936700966635486) internal successors, (20744), 16036 states have internal predecessors, (20744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:54:46,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16037 states to 16037 states and 20744 transitions. [2023-12-16 00:54:46,054 INFO L78 Accepts]: Start accepts. Automaton has 16037 states and 20744 transitions. Word has length 72 [2023-12-16 00:54:46,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:54:46,054 INFO L495 AbstractCegarLoop]: Abstraction has 16037 states and 20744 transitions. [2023-12-16 00:54:46,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 6.32258064516129) internal successors, (196), 31 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:54:46,054 INFO L276 IsEmpty]: Start isEmpty. Operand 16037 states and 20744 transitions. [2023-12-16 00:54:46,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-16 00:54:46,056 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:54:46,056 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-16 00:54:46,064 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-16 00:54:46,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:54:46,262 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:54:46,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:54:46,263 INFO L85 PathProgramCache]: Analyzing trace with hash 2033955118, now seen corresponding path program 1 times [2023-12-16 00:54:46,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:54:46,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944450762] [2023-12-16 00:54:46,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:54:46,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:54:46,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:54:47,070 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:54:47,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:54:47,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944450762] [2023-12-16 00:54:47,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944450762] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 00:54:47,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [529794358] [2023-12-16 00:54:47,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:54:47,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:54:47,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:54:47,077 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) [2023-12-16 00:54:47,082 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-16 00:54:47,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:54:47,199 INFO L262 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 34 conjunts are in the unsatisfiable core [2023-12-16 00:54:47,202 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 00:54:48,994 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:54:48,994 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 00:54:50,760 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:54:50,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [529794358] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 00:54:50,761 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 00:54:50,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 17, 17] total 43 [2023-12-16 00:54:50,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777725932] [2023-12-16 00:54:50,761 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 00:54:50,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-12-16 00:54:50,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:54:50,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-12-16 00:54:50,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=1584, Unknown=0, NotChecked=0, Total=1806 [2023-12-16 00:54:50,763 INFO L87 Difference]: Start difference. First operand 16037 states and 20744 transitions. Second operand has 43 states, 43 states have (on average 4.651162790697675) internal successors, (200), 43 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2023-12-16 00:54:57,647 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 [2023-12-16 00:54:57,647 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 00:54:57,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2023-12-16 00:54:57,653 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3544 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=2594, Invalid=9396, Unknown=0, NotChecked=0, Total=11990 [2023-12-16 00:54:57,653 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 1512 mSDsluCounter, 1832 mSDsCounter, 0 mSdLazyCounter, 1231 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1512 SdHoareTripleChecker+Valid, 1984 SdHoareTripleChecker+Invalid, 1280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-16 00:54:57,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1512 Valid, 1984 Invalid, 1280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1231 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-16 00:54:57,654 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-12-16 00:54:57,661 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-16 00:54:57,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-12-16 00:54:57,856 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (16037states) and FLOYD_HOARE automaton (currently 69 states, 43 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-6-3-2-2-2-2-2-2-1 term,while SimplifyDDA2 was simplifying 2 xjuncts wrt. a ∨-2-1 context. [2023-12-16 00:54:57,857 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-12-16 00:54:57,859 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] [2023-12-16 00:54:57,862 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 00:54:57,863 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 12:54:57 BoogieIcfgContainer [2023-12-16 00:54:57,863 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 00:54:57,864 INFO L158 Benchmark]: Toolchain (without parser) took 49481.31ms. Allocated memory was 194.0MB in the beginning and 1.5GB in the end (delta: 1.4GB). Free memory was 131.8MB in the beginning and 506.4MB in the end (delta: -374.6MB). Peak memory consumption was 976.8MB. Max. memory is 8.0GB. [2023-12-16 00:54:57,864 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 194.0MB. Free memory is still 147.1MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 00:54:57,865 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1564.02ms. Allocated memory was 194.0MB in the beginning and 250.6MB in the end (delta: 56.6MB). Free memory was 131.8MB in the beginning and 185.4MB in the end (delta: -53.6MB). Peak memory consumption was 130.8MB. Max. memory is 8.0GB. [2023-12-16 00:54:57,865 INFO L158 Benchmark]: Boogie Procedure Inliner took 485.89ms. Allocated memory is still 250.6MB. Free memory was 185.4MB in the beginning and 153.9MB in the end (delta: 31.5MB). Peak memory consumption was 109.6MB. Max. memory is 8.0GB. [2023-12-16 00:54:57,865 INFO L158 Benchmark]: Boogie Preprocessor took 549.13ms. Allocated memory was 250.6MB in the beginning and 482.3MB in the end (delta: 231.7MB). Free memory was 153.9MB in the beginning and 343.7MB in the end (delta: -189.8MB). Peak memory consumption was 76.5MB. Max. memory is 8.0GB. [2023-12-16 00:54:57,865 INFO L158 Benchmark]: RCFGBuilder took 4045.75ms. Allocated memory was 482.3MB in the beginning and 892.3MB in the end (delta: 410.0MB). Free memory was 343.7MB in the beginning and 731.7MB in the end (delta: -388.0MB). Peak memory consumption was 224.4MB. Max. memory is 8.0GB. [2023-12-16 00:54:57,866 INFO L158 Benchmark]: TraceAbstraction took 42825.02ms. Allocated memory was 892.3MB in the beginning and 1.5GB in the end (delta: 652.2MB). Free memory was 731.2MB in the beginning and 506.4MB in the end (delta: 224.8MB). Peak memory consumption was 876.5MB. Max. memory is 8.0GB. [2023-12-16 00:54:57,867 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 194.0MB. Free memory is still 147.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 1564.02ms. Allocated memory was 194.0MB in the beginning and 250.6MB in the end (delta: 56.6MB). Free memory was 131.8MB in the beginning and 185.4MB in the end (delta: -53.6MB). Peak memory consumption was 130.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 485.89ms. Allocated memory is still 250.6MB. Free memory was 185.4MB in the beginning and 153.9MB in the end (delta: 31.5MB). Peak memory consumption was 109.6MB. Max. memory is 8.0GB. * Boogie Preprocessor took 549.13ms. Allocated memory was 250.6MB in the beginning and 482.3MB in the end (delta: 231.7MB). Free memory was 153.9MB in the beginning and 343.7MB in the end (delta: -189.8MB). Peak memory consumption was 76.5MB. Max. memory is 8.0GB. * RCFGBuilder took 4045.75ms. Allocated memory was 482.3MB in the beginning and 892.3MB in the end (delta: 410.0MB). Free memory was 343.7MB in the beginning and 731.7MB in the end (delta: -388.0MB). Peak memory consumption was 224.4MB. Max. memory is 8.0GB. * TraceAbstraction took 42825.02ms. Allocated memory was 892.3MB in the beginning and 1.5GB in the end (delta: 652.2MB). Free memory was 731.2MB in the beginning and 506.4MB in the end (delta: 224.8MB). Peak memory consumption was 876.5MB. 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: 364]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 364). Cancelled while NwaCegarLoop was constructing difference of abstraction (16037states) and FLOYD_HOARE automaton (currently 69 states, 43 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-6-3-2-2-2-2-2-2-1 term,while SimplifyDDA2 was simplifying 2 xjuncts wrt. a ∨-2-1 context. - TimeoutResultAtElement [Line: 439]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 439). Cancelled while NwaCegarLoop was constructing difference of abstraction (16037states) and FLOYD_HOARE automaton (currently 69 states, 43 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-6-3-2-2-2-2-2-2-1 term,while SimplifyDDA2 was simplifying 2 xjuncts wrt. a ∨-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 822 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 42.8s, OverallIterations: 24, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 21.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 107633 SdHoareTripleChecker+Valid, 6.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 107633 mSDsluCounter, 95313 SdHoareTripleChecker+Invalid, 5.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 61087 mSDsCounter, 993 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7472 IncrementalHoareTripleChecker+Invalid, 8465 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 993 mSolverCounterUnsat, 34226 mSDtfsCounter, 7472 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1069 GetRequests, 666 SyntacticMatches, 0 SemanticMatches, 402 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7142 ImplicationChecksByTransitivity, 14.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17580occurred in iteration=21, InterpolantAutomatonStates: 229, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.6s AutomataMinimizationTime, 23 MinimizatonAttempts, 32577 StatesRemovedByMinimization, 20 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 14.7s InterpolantComputationTime, 1631 NumberOfCodeBlocks, 1631 NumberOfCodeBlocksAsserted, 29 NumberOfCheckSat, 1954 ConstructedInterpolants, 0 QuantifiedInterpolants, 22189 SizeOfPredicates, 31 NumberOfNonLiveVariables, 1760 ConjunctsInSsa, 98 ConjunctsInUnsatCore, 34 InterpolantComputations, 19 PerfectInterpolantSequences, 226/308 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