/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/combinations/pals_lcr.5.1.ufo.BOUNDED-10.pals+Problem12_label05.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 00:11:22,823 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 00:11:22,864 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 00:11:22,867 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 00:11:22,867 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 00:11:22,891 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 00:11:22,891 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 00:11:22,892 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 00:11:22,892 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 00:11:22,895 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 00:11:22,895 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 00:11:22,895 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 00:11:22,896 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 00:11:22,897 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 00:11:22,897 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 00:11:22,897 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 00:11:22,897 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 00:11:22,898 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 00:11:22,898 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 00:11:22,898 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 00:11:22,898 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 00:11:22,898 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 00:11:22,899 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 00:11:22,899 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 00:11:22,899 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 00:11:22,899 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 00:11:22,899 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 00:11:22,899 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 00:11:22,900 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 00:11:22,900 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 00:11:22,901 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 00:11:22,901 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 00:11:22,901 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 00:11:22,901 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 00:11:22,901 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 00:11:22,902 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 00:11:22,902 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 00:11:22,902 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 00:11:22,902 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 00:11:22,902 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 00:11:22,902 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 00:11:22,902 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 00:11:22,903 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 00:11:22,903 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 00:11:23,091 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 00:11:23,106 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 00:11:23,108 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 00:11:23,109 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 00:11:23,109 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 00:11:23,110 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pals_lcr.5.1.ufo.BOUNDED-10.pals+Problem12_label05.c [2023-12-19 00:11:24,120 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 00:11:24,448 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 00:11:24,449 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.5.1.ufo.BOUNDED-10.pals+Problem12_label05.c [2023-12-19 00:11:24,472 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/191f22b41/d4d84aecaab040699a7c0d506e4a0116/FLAGdd18452aa [2023-12-19 00:11:24,485 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/191f22b41/d4d84aecaab040699a7c0d506e4a0116 [2023-12-19 00:11:24,487 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 00:11:24,489 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 00:11:24,491 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 00:11:24,491 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 00:11:24,494 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 00:11:24,494 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 12:11:24" (1/1) ... [2023-12-19 00:11:24,495 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d9ddd96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:11:24, skipping insertion in model container [2023-12-19 00:11:24,495 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 12:11:24" (1/1) ... [2023-12-19 00:11:24,592 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 00:11:24,854 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.5.1.ufo.BOUNDED-10.pals+Problem12_label05.c[11677,11690] [2023-12-19 00:11:24,889 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.5.1.ufo.BOUNDED-10.pals+Problem12_label05.c[18613,18626] [2023-12-19 00:11:25,354 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 00:11:25,362 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 00:11:25,393 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.5.1.ufo.BOUNDED-10.pals+Problem12_label05.c[11677,11690] [2023-12-19 00:11:25,401 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.5.1.ufo.BOUNDED-10.pals+Problem12_label05.c[18613,18626] [2023-12-19 00:11:25,657 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 00:11:25,719 INFO L206 MainTranslator]: Completed translation [2023-12-19 00:11:25,720 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:11:25 WrapperNode [2023-12-19 00:11:25,720 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 00:11:25,720 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 00:11:25,720 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 00:11:25,721 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 00:11:25,725 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:11:25" (1/1) ... [2023-12-19 00:11:25,768 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:11:25" (1/1) ... [2023-12-19 00:11:26,022 INFO L138 Inliner]: procedures = 36, calls = 22, calls flagged for inlining = 17, calls inlined = 17, statements flattened = 5095 [2023-12-19 00:11:26,022 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 00:11:26,027 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 00:11:26,028 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 00:11:26,028 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 00:11:26,035 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:11:25" (1/1) ... [2023-12-19 00:11:26,036 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:11:25" (1/1) ... [2023-12-19 00:11:26,078 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:11:25" (1/1) ... [2023-12-19 00:11:26,207 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-19 00:11:26,208 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:11:25" (1/1) ... [2023-12-19 00:11:26,208 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:11:25" (1/1) ... [2023-12-19 00:11:26,325 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:11:25" (1/1) ... [2023-12-19 00:11:26,354 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:11:25" (1/1) ... [2023-12-19 00:11:26,372 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:11:25" (1/1) ... [2023-12-19 00:11:26,385 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:11:25" (1/1) ... [2023-12-19 00:11:26,427 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 00:11:26,428 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 00:11:26,429 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 00:11:26,429 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 00:11:26,430 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:11:25" (1/1) ... [2023-12-19 00:11:26,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 00:11:26,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:11:26,450 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-19 00:11:26,456 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-19 00:11:26,474 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 00:11:26,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 00:11:26,474 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 00:11:26,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 00:11:26,556 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 00:11:26,558 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 00:11:29,329 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 00:11:29,387 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 00:11:29,387 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-19 00:11:29,388 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 12:11:29 BoogieIcfgContainer [2023-12-19 00:11:29,388 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 00:11:29,390 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 00:11:29,390 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 00:11:29,393 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 00:11:29,393 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 12:11:24" (1/3) ... [2023-12-19 00:11:29,393 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a225889 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 12:11:29, skipping insertion in model container [2023-12-19 00:11:29,394 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:11:25" (2/3) ... [2023-12-19 00:11:29,394 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a225889 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 12:11:29, skipping insertion in model container [2023-12-19 00:11:29,394 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 12:11:29" (3/3) ... [2023-12-19 00:11:29,395 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.1.ufo.BOUNDED-10.pals+Problem12_label05.c [2023-12-19 00:11:29,406 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 00:11:29,406 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-19 00:11:29,459 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 00:11:29,464 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;@1f7856ff, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 00:11:29,464 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-19 00:11:29,470 INFO L276 IsEmpty]: Start isEmpty. Operand has 834 states, 831 states have (on average 1.9759326113116726) internal successors, (1642), 833 states have internal predecessors, (1642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:11:29,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-19 00:11:29,476 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:11:29,476 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:11:29,477 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:11:29,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:11:29,492 INFO L85 PathProgramCache]: Analyzing trace with hash -1603356568, now seen corresponding path program 1 times [2023-12-19 00:11:29,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:11:29,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277103333] [2023-12-19 00:11:29,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:11:29,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:11:29,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:11:29,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:11:29,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:11:29,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277103333] [2023-12-19 00:11:29,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277103333] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:11:29,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:11:29,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 00:11:29,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431831487] [2023-12-19 00:11:29,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:11:29,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 00:11:29,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:11:29,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 00:11:29,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 00:11:29,699 INFO L87 Difference]: Start difference. First operand has 834 states, 831 states have (on average 1.9759326113116726) internal successors, (1642), 833 states have internal predecessors, (1642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:11:29,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:11:29,791 INFO L93 Difference]: Finished difference Result 1633 states and 3216 transitions. [2023-12-19 00:11:29,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 00:11:29,793 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-12-19 00:11:29,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:11:29,808 INFO L225 Difference]: With dead ends: 1633 [2023-12-19 00:11:29,808 INFO L226 Difference]: Without dead ends: 830 [2023-12-19 00:11:29,841 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 00:11:29,843 INFO L413 NwaCegarLoop]: 1571 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1571 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 00:11:29,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1571 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:11:29,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 830 states. [2023-12-19 00:11:29,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 830 to 830. [2023-12-19 00:11:29,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 830 states, 828 states have (on average 1.8973429951690821) internal successors, (1571), 829 states have internal predecessors, (1571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:11:29,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 830 states to 830 states and 1571 transitions. [2023-12-19 00:11:29,905 INFO L78 Accepts]: Start accepts. Automaton has 830 states and 1571 transitions. Word has length 21 [2023-12-19 00:11:29,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:11:29,905 INFO L495 AbstractCegarLoop]: Abstraction has 830 states and 1571 transitions. [2023-12-19 00:11:29,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:11:29,906 INFO L276 IsEmpty]: Start isEmpty. Operand 830 states and 1571 transitions. [2023-12-19 00:11:29,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-19 00:11:29,907 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:11:29,907 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:11:29,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-19 00:11:29,908 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:11:29,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:11:29,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1103262826, now seen corresponding path program 1 times [2023-12-19 00:11:29,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:11:29,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411935525] [2023-12-19 00:11:29,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:11:29,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:11:30,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:11:30,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:11:30,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:11:30,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411935525] [2023-12-19 00:11:30,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411935525] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:11:30,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:11:30,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 00:11:30,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946748739] [2023-12-19 00:11:30,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:11:30,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 00:11:30,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:11:30,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 00:11:30,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 00:11:30,184 INFO L87 Difference]: Start difference. First operand 830 states and 1571 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:11:30,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:11:30,260 INFO L93 Difference]: Finished difference Result 874 states and 1640 transitions. [2023-12-19 00:11:30,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 00:11:30,260 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-12-19 00:11:30,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:11:30,263 INFO L225 Difference]: With dead ends: 874 [2023-12-19 00:11:30,263 INFO L226 Difference]: Without dead ends: 830 [2023-12-19 00:11:30,263 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 00:11:30,264 INFO L413 NwaCegarLoop]: 1568 mSDtfsCounter, 0 mSDsluCounter, 3101 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4669 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 00:11:30,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4669 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:11:30,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 830 states. [2023-12-19 00:11:30,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 830 to 830. [2023-12-19 00:11:30,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 830 states, 828 states have (on average 1.8599033816425121) internal successors, (1540), 829 states have internal predecessors, (1540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:11:30,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 830 states to 830 states and 1540 transitions. [2023-12-19 00:11:30,274 INFO L78 Accepts]: Start accepts. Automaton has 830 states and 1540 transitions. Word has length 21 [2023-12-19 00:11:30,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:11:30,274 INFO L495 AbstractCegarLoop]: Abstraction has 830 states and 1540 transitions. [2023-12-19 00:11:30,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:11:30,274 INFO L276 IsEmpty]: Start isEmpty. Operand 830 states and 1540 transitions. [2023-12-19 00:11:30,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-19 00:11:30,275 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:11:30,275 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:11:30,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-19 00:11:30,276 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:11:30,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:11:30,276 INFO L85 PathProgramCache]: Analyzing trace with hash 51546625, now seen corresponding path program 1 times [2023-12-19 00:11:30,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:11:30,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401029841] [2023-12-19 00:11:30,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:11:30,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:11:30,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:11:30,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:11:30,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:11:30,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401029841] [2023-12-19 00:11:30,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401029841] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:11:30,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:11:30,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 00:11:30,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541498959] [2023-12-19 00:11:30,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:11:30,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 00:11:30,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:11:30,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 00:11:30,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 00:11:30,376 INFO L87 Difference]: Start difference. First operand 830 states and 1540 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:11:30,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:11:30,549 INFO L93 Difference]: Finished difference Result 1240 states and 2200 transitions. [2023-12-19 00:11:30,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-19 00:11:30,550 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2023-12-19 00:11:30,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:11:30,553 INFO L225 Difference]: With dead ends: 1240 [2023-12-19 00:11:30,553 INFO L226 Difference]: Without dead ends: 1199 [2023-12-19 00:11:30,554 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2023-12-19 00:11:30,554 INFO L413 NwaCegarLoop]: 1533 mSDtfsCounter, 7933 mSDsluCounter, 1167 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7933 SdHoareTripleChecker+Valid, 2700 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 00:11:30,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7933 Valid, 2700 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 00:11:30,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1199 states. [2023-12-19 00:11:30,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1199 to 869. [2023-12-19 00:11:30,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 869 states, 867 states have (on average 1.8489042675893888) internal successors, (1603), 868 states have internal predecessors, (1603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:11:30,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 869 states to 869 states and 1603 transitions. [2023-12-19 00:11:30,569 INFO L78 Accepts]: Start accepts. Automaton has 869 states and 1603 transitions. Word has length 51 [2023-12-19 00:11:30,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:11:30,569 INFO L495 AbstractCegarLoop]: Abstraction has 869 states and 1603 transitions. [2023-12-19 00:11:30,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:11:30,569 INFO L276 IsEmpty]: Start isEmpty. Operand 869 states and 1603 transitions. [2023-12-19 00:11:30,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-19 00:11:30,571 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:11:30,571 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:11:30,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-19 00:11:30,571 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:11:30,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:11:30,571 INFO L85 PathProgramCache]: Analyzing trace with hash 2145916561, now seen corresponding path program 1 times [2023-12-19 00:11:30,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:11:30,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722217202] [2023-12-19 00:11:30,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:11:30,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:11:30,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:11:30,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:11:30,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:11:30,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722217202] [2023-12-19 00:11:30,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722217202] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:11:30,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:11:30,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:11:30,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870170378] [2023-12-19 00:11:30,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:11:30,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 00:11:30,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:11:30,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 00:11:30,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:11:30,619 INFO L87 Difference]: Start difference. First operand 869 states and 1603 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:11:30,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:11:30,641 INFO L93 Difference]: Finished difference Result 1018 states and 1842 transitions. [2023-12-19 00:11:30,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 00:11:30,642 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2023-12-19 00:11:30,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:11:30,644 INFO L225 Difference]: With dead ends: 1018 [2023-12-19 00:11:30,644 INFO L226 Difference]: Without dead ends: 938 [2023-12-19 00:11:30,645 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:11:30,645 INFO L413 NwaCegarLoop]: 1535 mSDtfsCounter, 1480 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1480 SdHoareTripleChecker+Valid, 1595 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 00:11:30,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1480 Valid, 1595 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:11:30,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 938 states. [2023-12-19 00:11:30,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 938 to 936. [2023-12-19 00:11:30,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 936 states, 934 states have (on average 1.8297644539614561) internal successors, (1709), 935 states have internal predecessors, (1709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:11:30,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 936 states to 936 states and 1709 transitions. [2023-12-19 00:11:30,658 INFO L78 Accepts]: Start accepts. Automaton has 936 states and 1709 transitions. Word has length 53 [2023-12-19 00:11:30,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:11:30,658 INFO L495 AbstractCegarLoop]: Abstraction has 936 states and 1709 transitions. [2023-12-19 00:11:30,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:11:30,658 INFO L276 IsEmpty]: Start isEmpty. Operand 936 states and 1709 transitions. [2023-12-19 00:11:30,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-19 00:11:30,659 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:11:30,660 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:11:30,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-19 00:11:30,660 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:11:30,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:11:30,660 INFO L85 PathProgramCache]: Analyzing trace with hash -2146905783, now seen corresponding path program 1 times [2023-12-19 00:11:30,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:11:30,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672924819] [2023-12-19 00:11:30,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:11:30,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:11:30,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:11:30,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:11:30,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:11:30,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672924819] [2023-12-19 00:11:30,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672924819] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:11:30,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:11:30,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 00:11:30,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453523653] [2023-12-19 00:11:30,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:11:30,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 00:11:30,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:11:30,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 00:11:30,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-19 00:11:30,850 INFO L87 Difference]: Start difference. First operand 936 states and 1709 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:11:30,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:11:30,993 INFO L93 Difference]: Finished difference Result 1085 states and 1945 transitions. [2023-12-19 00:11:30,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 00:11:30,993 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2023-12-19 00:11:30,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:11:30,997 INFO L225 Difference]: With dead ends: 1085 [2023-12-19 00:11:30,997 INFO L226 Difference]: Without dead ends: 938 [2023-12-19 00:11:30,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2023-12-19 00:11:30,999 INFO L413 NwaCegarLoop]: 1530 mSDtfsCounter, 7439 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7439 SdHoareTripleChecker+Valid, 1775 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 00:11:30,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7439 Valid, 1775 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:11:31,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 938 states. [2023-12-19 00:11:31,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 938 to 936. [2023-12-19 00:11:31,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 936 states, 934 states have (on average 1.8276231263383298) internal successors, (1707), 935 states have internal predecessors, (1707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:11:31,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 936 states to 936 states and 1707 transitions. [2023-12-19 00:11:31,054 INFO L78 Accepts]: Start accepts. Automaton has 936 states and 1707 transitions. Word has length 53 [2023-12-19 00:11:31,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:11:31,054 INFO L495 AbstractCegarLoop]: Abstraction has 936 states and 1707 transitions. [2023-12-19 00:11:31,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:11:31,055 INFO L276 IsEmpty]: Start isEmpty. Operand 936 states and 1707 transitions. [2023-12-19 00:11:31,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-19 00:11:31,056 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:11:31,056 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:11:31,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-19 00:11:31,056 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:11:31,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:11:31,056 INFO L85 PathProgramCache]: Analyzing trace with hash 2036322024, now seen corresponding path program 1 times [2023-12-19 00:11:31,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:11:31,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905108138] [2023-12-19 00:11:31,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:11:31,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:11:31,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:11:31,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:11:31,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:11:31,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905108138] [2023-12-19 00:11:31,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905108138] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:11:31,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:11:31,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 00:11:31,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955563722] [2023-12-19 00:11:31,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:11:31,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 00:11:31,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:11:31,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 00:11:31,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 00:11:31,160 INFO L87 Difference]: Start difference. First operand 936 states and 1707 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:11:31,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:11:31,186 INFO L93 Difference]: Finished difference Result 944 states and 1716 transitions. [2023-12-19 00:11:31,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 00:11:31,187 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2023-12-19 00:11:31,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:11:31,190 INFO L225 Difference]: With dead ends: 944 [2023-12-19 00:11:31,190 INFO L226 Difference]: Without dead ends: 942 [2023-12-19 00:11:31,190 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 00:11:31,190 INFO L413 NwaCegarLoop]: 1536 mSDtfsCounter, 1 mSDsluCounter, 3064 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4600 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 00:11:31,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4600 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:11:31,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 942 states. [2023-12-19 00:11:31,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 942 to 940. [2023-12-19 00:11:31,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 940 states, 938 states have (on average 1.8230277185501067) internal successors, (1710), 939 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:11:31,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 940 states to 940 states and 1710 transitions. [2023-12-19 00:11:31,203 INFO L78 Accepts]: Start accepts. Automaton has 940 states and 1710 transitions. Word has length 54 [2023-12-19 00:11:31,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:11:31,203 INFO L495 AbstractCegarLoop]: Abstraction has 940 states and 1710 transitions. [2023-12-19 00:11:31,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:11:31,203 INFO L276 IsEmpty]: Start isEmpty. Operand 940 states and 1710 transitions. [2023-12-19 00:11:31,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-19 00:11:31,204 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:11:31,204 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:11:31,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-19 00:11:31,204 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:11:31,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:11:31,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1922958665, now seen corresponding path program 1 times [2023-12-19 00:11:31,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:11:31,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741806239] [2023-12-19 00:11:31,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:11:31,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:11:31,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:11:31,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:11:31,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:11:31,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741806239] [2023-12-19 00:11:31,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741806239] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:11:31,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:11:31,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:11:31,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954518916] [2023-12-19 00:11:31,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:11:31,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 00:11:31,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:11:31,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 00:11:31,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:11:31,238 INFO L87 Difference]: Start difference. First operand 940 states and 1710 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:11:31,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:11:31,258 INFO L93 Difference]: Finished difference Result 1102 states and 1963 transitions. [2023-12-19 00:11:31,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 00:11:31,259 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2023-12-19 00:11:31,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:11:31,262 INFO L225 Difference]: With dead ends: 1102 [2023-12-19 00:11:31,262 INFO L226 Difference]: Without dead ends: 1018 [2023-12-19 00:11:31,262 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:11:31,263 INFO L413 NwaCegarLoop]: 1587 mSDtfsCounter, 1494 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1494 SdHoareTripleChecker+Valid, 1653 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 00:11:31,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1494 Valid, 1653 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:11:31,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1018 states. [2023-12-19 00:11:31,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1018 to 1016. [2023-12-19 00:11:31,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1016 states, 1014 states have (on average 1.801775147928994) internal successors, (1827), 1015 states have internal predecessors, (1827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:11:31,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1016 states to 1016 states and 1827 transitions. [2023-12-19 00:11:31,277 INFO L78 Accepts]: Start accepts. Automaton has 1016 states and 1827 transitions. Word has length 55 [2023-12-19 00:11:31,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:11:31,277 INFO L495 AbstractCegarLoop]: Abstraction has 1016 states and 1827 transitions. [2023-12-19 00:11:31,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:11:31,278 INFO L276 IsEmpty]: Start isEmpty. Operand 1016 states and 1827 transitions. [2023-12-19 00:11:31,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-19 00:11:31,278 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:11:31,278 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:11:31,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-19 00:11:31,278 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:11:31,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:11:31,279 INFO L85 PathProgramCache]: Analyzing trace with hash 1694319433, now seen corresponding path program 1 times [2023-12-19 00:11:31,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:11:31,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196334535] [2023-12-19 00:11:31,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:11:31,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:11:31,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:11:31,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:11:31,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:11:31,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196334535] [2023-12-19 00:11:31,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196334535] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:11:31,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:11:31,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:11:31,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389401754] [2023-12-19 00:11:31,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:11:31,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 00:11:31,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:11:31,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 00:11:31,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:11:31,309 INFO L87 Difference]: Start difference. First operand 1016 states and 1827 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:11:31,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:11:31,331 INFO L93 Difference]: Finished difference Result 1442 states and 2487 transitions. [2023-12-19 00:11:31,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 00:11:31,332 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2023-12-19 00:11:31,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:11:31,335 INFO L225 Difference]: With dead ends: 1442 [2023-12-19 00:11:31,335 INFO L226 Difference]: Without dead ends: 1217 [2023-12-19 00:11:31,336 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:11:31,336 INFO L413 NwaCegarLoop]: 1579 mSDtfsCounter, 1490 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1490 SdHoareTripleChecker+Valid, 1653 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 00:11:31,336 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1490 Valid, 1653 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:11:31,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1217 states. [2023-12-19 00:11:31,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1217 to 1215. [2023-12-19 00:11:31,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1215 states, 1213 states have (on average 1.7551525144270403) internal successors, (2129), 1214 states have internal predecessors, (2129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:11:31,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1215 states to 1215 states and 2129 transitions. [2023-12-19 00:11:31,353 INFO L78 Accepts]: Start accepts. Automaton has 1215 states and 2129 transitions. Word has length 55 [2023-12-19 00:11:31,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:11:31,353 INFO L495 AbstractCegarLoop]: Abstraction has 1215 states and 2129 transitions. [2023-12-19 00:11:31,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:11:31,353 INFO L276 IsEmpty]: Start isEmpty. Operand 1215 states and 2129 transitions. [2023-12-19 00:11:31,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-19 00:11:31,354 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:11:31,354 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:11:31,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-19 00:11:31,354 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:11:31,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:11:31,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1068663369, now seen corresponding path program 1 times [2023-12-19 00:11:31,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:11:31,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808181006] [2023-12-19 00:11:31,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:11:31,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:11:31,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:11:31,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:11:31,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:11:31,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808181006] [2023-12-19 00:11:31,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808181006] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:11:31,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:11:31,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:11:31,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583612378] [2023-12-19 00:11:31,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:11:31,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 00:11:31,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:11:31,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 00:11:31,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:11:31,383 INFO L87 Difference]: Start difference. First operand 1215 states and 2129 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:11:31,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:11:31,409 INFO L93 Difference]: Finished difference Result 2015 states and 3351 transitions. [2023-12-19 00:11:31,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 00:11:31,409 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2023-12-19 00:11:31,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:11:31,414 INFO L225 Difference]: With dead ends: 2015 [2023-12-19 00:11:31,414 INFO L226 Difference]: Without dead ends: 1591 [2023-12-19 00:11:31,414 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:11:31,415 INFO L413 NwaCegarLoop]: 1577 mSDtfsCounter, 1488 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1488 SdHoareTripleChecker+Valid, 1655 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 00:11:31,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1488 Valid, 1655 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:11:31,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1591 states. [2023-12-19 00:11:31,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1591 to 1589. [2023-12-19 00:11:31,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1589 states, 1587 states have (on average 1.6918714555765595) internal successors, (2685), 1588 states have internal predecessors, (2685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:11:31,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1589 states to 1589 states and 2685 transitions. [2023-12-19 00:11:31,439 INFO L78 Accepts]: Start accepts. Automaton has 1589 states and 2685 transitions. Word has length 55 [2023-12-19 00:11:31,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:11:31,439 INFO L495 AbstractCegarLoop]: Abstraction has 1589 states and 2685 transitions. [2023-12-19 00:11:31,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:11:31,439 INFO L276 IsEmpty]: Start isEmpty. Operand 1589 states and 2685 transitions. [2023-12-19 00:11:31,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-19 00:11:31,440 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:11:31,440 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:11:31,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-19 00:11:31,440 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:11:31,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:11:31,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1957396809, now seen corresponding path program 1 times [2023-12-19 00:11:31,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:11:31,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567678926] [2023-12-19 00:11:31,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:11:31,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:11:31,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:11:31,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:11:31,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:11:31,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567678926] [2023-12-19 00:11:31,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567678926] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:11:31,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:11:31,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:11:31,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491346287] [2023-12-19 00:11:31,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:11:31,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 00:11:31,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:11:31,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 00:11:31,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:11:31,470 INFO L87 Difference]: Start difference. First operand 1589 states and 2685 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:11:31,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:11:31,503 INFO L93 Difference]: Finished difference Result 3089 states and 4935 transitions. [2023-12-19 00:11:31,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 00:11:31,503 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2023-12-19 00:11:31,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:11:31,509 INFO L225 Difference]: With dead ends: 3089 [2023-12-19 00:11:31,509 INFO L226 Difference]: Without dead ends: 2291 [2023-12-19 00:11:31,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:11:31,511 INFO L413 NwaCegarLoop]: 1575 mSDtfsCounter, 1486 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1486 SdHoareTripleChecker+Valid, 1657 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 00:11:31,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1486 Valid, 1657 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:11:31,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2291 states. [2023-12-19 00:11:31,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2291 to 2289. [2023-12-19 00:11:31,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2289 states, 2287 states have (on average 1.6182772190642762) internal successors, (3701), 2288 states have internal predecessors, (3701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:11:31,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2289 states to 2289 states and 3701 transitions. [2023-12-19 00:11:31,548 INFO L78 Accepts]: Start accepts. Automaton has 2289 states and 3701 transitions. Word has length 55 [2023-12-19 00:11:31,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:11:31,548 INFO L495 AbstractCegarLoop]: Abstraction has 2289 states and 3701 transitions. [2023-12-19 00:11:31,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:11:31,548 INFO L276 IsEmpty]: Start isEmpty. Operand 2289 states and 3701 transitions. [2023-12-19 00:11:31,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-19 00:11:31,549 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:11:31,549 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:11:31,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-19 00:11:31,549 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:11:31,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:11:31,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1654375497, now seen corresponding path program 1 times [2023-12-19 00:11:31,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:11:31,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137214825] [2023-12-19 00:11:31,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:11:31,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:11:31,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:11:31,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:11:31,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:11:31,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137214825] [2023-12-19 00:11:31,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137214825] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:11:31,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:11:31,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:11:31,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987792252] [2023-12-19 00:11:31,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:11:31,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 00:11:31,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:11:31,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 00:11:31,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:11:31,578 INFO L87 Difference]: Start difference. First operand 2289 states and 3701 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:11:31,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:11:31,654 INFO L93 Difference]: Finished difference Result 5093 states and 7815 transitions. [2023-12-19 00:11:31,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 00:11:31,655 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2023-12-19 00:11:31,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:11:31,663 INFO L225 Difference]: With dead ends: 5093 [2023-12-19 00:11:31,664 INFO L226 Difference]: Without dead ends: 3595 [2023-12-19 00:11:31,665 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:11:31,665 INFO L413 NwaCegarLoop]: 1589 mSDtfsCounter, 1492 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1492 SdHoareTripleChecker+Valid, 1659 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 00:11:31,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1492 Valid, 1659 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:11:31,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3595 states. [2023-12-19 00:11:31,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3595 to 3593. [2023-12-19 00:11:31,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3593 states, 3591 states have (on average 1.5430242272347536) internal successors, (5541), 3592 states have internal predecessors, (5541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:11:31,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3593 states to 3593 states and 5541 transitions. [2023-12-19 00:11:31,727 INFO L78 Accepts]: Start accepts. Automaton has 3593 states and 5541 transitions. Word has length 55 [2023-12-19 00:11:31,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:11:31,727 INFO L495 AbstractCegarLoop]: Abstraction has 3593 states and 5541 transitions. [2023-12-19 00:11:31,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:11:31,727 INFO L276 IsEmpty]: Start isEmpty. Operand 3593 states and 5541 transitions. [2023-12-19 00:11:31,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-19 00:11:31,727 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:11:31,728 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:11:31,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-19 00:11:31,728 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:11:31,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:11:31,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1592910316, now seen corresponding path program 1 times [2023-12-19 00:11:31,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:11:31,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528557152] [2023-12-19 00:11:31,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:11:31,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:11:31,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:11:31,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:11:31,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:11:31,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528557152] [2023-12-19 00:11:31,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528557152] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:11:31,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:11:31,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:11:31,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438258058] [2023-12-19 00:11:31,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:11:31,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 00:11:31,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:11:31,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 00:11:31,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 00:11:31,803 INFO L87 Difference]: Start difference. First operand 3593 states and 5541 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:11:36,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:11:36,851 INFO L93 Difference]: Finished difference Result 5848 states and 9850 transitions. [2023-12-19 00:11:36,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 00:11:36,857 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2023-12-19 00:11:36,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:11:36,884 INFO L225 Difference]: With dead ends: 5848 [2023-12-19 00:11:36,884 INFO L226 Difference]: Without dead ends: 5095 [2023-12-19 00:11:36,885 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 00:11:36,886 INFO L413 NwaCegarLoop]: 791 mSDtfsCounter, 2402 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5157 mSolverCounterSat, 1245 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2402 SdHoareTripleChecker+Valid, 809 SdHoareTripleChecker+Invalid, 6402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1245 IncrementalHoareTripleChecker+Valid, 5157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2023-12-19 00:11:36,886 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2402 Valid, 809 Invalid, 6402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1245 Valid, 5157 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2023-12-19 00:11:36,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5095 states. [2023-12-19 00:11:37,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5095 to 5095. [2023-12-19 00:11:37,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5095 states, 5093 states have (on average 1.475947378755154) internal successors, (7517), 5094 states have internal predecessors, (7517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:11:37,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5095 states to 5095 states and 7517 transitions. [2023-12-19 00:11:37,020 INFO L78 Accepts]: Start accepts. Automaton has 5095 states and 7517 transitions. Word has length 59 [2023-12-19 00:11:37,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:11:37,021 INFO L495 AbstractCegarLoop]: Abstraction has 5095 states and 7517 transitions. [2023-12-19 00:11:37,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:11:37,021 INFO L276 IsEmpty]: Start isEmpty. Operand 5095 states and 7517 transitions. [2023-12-19 00:11:37,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-19 00:11:37,025 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:11:37,025 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:11:37,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-19 00:11:37,025 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:11:37,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:11:37,026 INFO L85 PathProgramCache]: Analyzing trace with hash 285878162, now seen corresponding path program 1 times [2023-12-19 00:11:37,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:11:37,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393129621] [2023-12-19 00:11:37,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:11:37,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:11:37,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:11:37,136 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 00:11:37,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:11:37,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393129621] [2023-12-19 00:11:37,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393129621] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:11:37,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:11:37,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 00:11:37,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802834671] [2023-12-19 00:11:37,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:11:37,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 00:11:37,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:11:37,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 00:11:37,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-19 00:11:37,138 INFO L87 Difference]: Start difference. First operand 5095 states and 7517 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:11:37,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:11:37,429 INFO L93 Difference]: Finished difference Result 18883 states and 27507 transitions. [2023-12-19 00:11:37,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 00:11:37,429 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2023-12-19 00:11:37,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:11:37,473 INFO L225 Difference]: With dead ends: 18883 [2023-12-19 00:11:37,473 INFO L226 Difference]: Without dead ends: 16897 [2023-12-19 00:11:37,481 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-19 00:11:37,483 INFO L413 NwaCegarLoop]: 1596 mSDtfsCounter, 6293 mSDsluCounter, 1945 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6293 SdHoareTripleChecker+Valid, 3541 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 00:11:37,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6293 Valid, 3541 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 00:11:37,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16897 states. [2023-12-19 00:11:37,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16897 to 7495. [2023-12-19 00:11:37,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7495 states, 7493 states have (on average 1.462298144935273) internal successors, (10957), 7494 states have internal predecessors, (10957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:11:37,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7495 states to 7495 states and 10957 transitions. [2023-12-19 00:11:37,704 INFO L78 Accepts]: Start accepts. Automaton has 7495 states and 10957 transitions. Word has length 73 [2023-12-19 00:11:37,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:11:37,704 INFO L495 AbstractCegarLoop]: Abstraction has 7495 states and 10957 transitions. [2023-12-19 00:11:37,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:11:37,704 INFO L276 IsEmpty]: Start isEmpty. Operand 7495 states and 10957 transitions. [2023-12-19 00:11:37,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-19 00:11:37,706 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:11:37,706 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:11:37,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-19 00:11:37,706 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:11:37,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:11:37,707 INFO L85 PathProgramCache]: Analyzing trace with hash 57238930, now seen corresponding path program 1 times [2023-12-19 00:11:37,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:11:37,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386166808] [2023-12-19 00:11:37,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:11:37,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:11:37,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:11:37,796 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-19 00:11:37,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:11:37,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386166808] [2023-12-19 00:11:37,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386166808] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:11:37,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:11:37,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 00:11:37,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039168253] [2023-12-19 00:11:37,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:11:37,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 00:11:37,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:11:37,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 00:11:37,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-19 00:11:37,798 INFO L87 Difference]: Start difference. First operand 7495 states and 10957 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:11:38,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:11:38,177 INFO L93 Difference]: Finished difference Result 21683 states and 31539 transitions. [2023-12-19 00:11:38,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 00:11:38,178 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2023-12-19 00:11:38,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:11:38,204 INFO L225 Difference]: With dead ends: 21683 [2023-12-19 00:11:38,204 INFO L226 Difference]: Without dead ends: 18881 [2023-12-19 00:11:38,212 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-19 00:11:38,213 INFO L413 NwaCegarLoop]: 1596 mSDtfsCounter, 6336 mSDsluCounter, 1996 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6336 SdHoareTripleChecker+Valid, 3592 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 00:11:38,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6336 Valid, 3592 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 00:11:38,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18881 states. [2023-12-19 00:11:38,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18881 to 11287. [2023-12-19 00:11:38,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11287 states, 11285 states have (on average 1.4515728843597695) internal successors, (16381), 11286 states have internal predecessors, (16381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:11:38,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11287 states to 11287 states and 16381 transitions. [2023-12-19 00:11:38,483 INFO L78 Accepts]: Start accepts. Automaton has 11287 states and 16381 transitions. Word has length 73 [2023-12-19 00:11:38,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:11:38,483 INFO L495 AbstractCegarLoop]: Abstraction has 11287 states and 16381 transitions. [2023-12-19 00:11:38,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:11:38,483 INFO L276 IsEmpty]: Start isEmpty. Operand 11287 states and 16381 transitions. [2023-12-19 00:11:38,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-19 00:11:38,485 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:11:38,485 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:11:38,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-19 00:11:38,485 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:11:38,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:11:38,485 INFO L85 PathProgramCache]: Analyzing trace with hash -568417134, now seen corresponding path program 1 times [2023-12-19 00:11:38,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:11:38,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381435119] [2023-12-19 00:11:38,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:11:38,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:11:38,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:11:38,622 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-19 00:11:38,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:11:38,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381435119] [2023-12-19 00:11:38,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381435119] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:11:38,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:11:38,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 00:11:38,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323785455] [2023-12-19 00:11:38,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:11:38,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 00:11:38,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:11:38,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 00:11:38,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-19 00:11:38,624 INFO L87 Difference]: Start difference. First operand 11287 states and 16381 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:11:39,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:11:39,011 INFO L93 Difference]: Finished difference Result 24483 states and 35555 transitions. [2023-12-19 00:11:39,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 00:11:39,011 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2023-12-19 00:11:39,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:11:39,041 INFO L225 Difference]: With dead ends: 24483 [2023-12-19 00:11:39,041 INFO L226 Difference]: Without dead ends: 21681 [2023-12-19 00:11:39,051 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-19 00:11:39,052 INFO L413 NwaCegarLoop]: 1594 mSDtfsCounter, 6381 mSDsluCounter, 1961 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6381 SdHoareTripleChecker+Valid, 3555 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 00:11:39,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6381 Valid, 3555 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 00:11:39,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21681 states. [2023-12-19 00:11:39,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21681 to 14087. [2023-12-19 00:11:39,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14087 states, 14085 states have (on average 1.448136315228967) internal successors, (20397), 14086 states have internal predecessors, (20397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:11:39,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14087 states to 14087 states and 20397 transitions. [2023-12-19 00:11:39,497 INFO L78 Accepts]: Start accepts. Automaton has 14087 states and 20397 transitions. Word has length 73 [2023-12-19 00:11:39,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:11:39,497 INFO L495 AbstractCegarLoop]: Abstraction has 14087 states and 20397 transitions. [2023-12-19 00:11:39,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:11:39,497 INFO L276 IsEmpty]: Start isEmpty. Operand 14087 states and 20397 transitions. [2023-12-19 00:11:39,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-19 00:11:39,499 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:11:39,499 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:11:39,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-19 00:11:39,500 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:11:39,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:11:39,500 INFO L85 PathProgramCache]: Analyzing trace with hash 320316306, now seen corresponding path program 1 times [2023-12-19 00:11:39,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:11:39,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331007555] [2023-12-19 00:11:39,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:11:39,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:11:39,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:11:39,618 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-19 00:11:39,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:11:39,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331007555] [2023-12-19 00:11:39,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331007555] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:11:39,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:11:39,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 00:11:39,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543065102] [2023-12-19 00:11:39,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:11:39,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 00:11:39,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:11:39,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 00:11:39,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-19 00:11:39,621 INFO L87 Difference]: Start difference. First operand 14087 states and 20397 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:11:40,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:11:40,052 INFO L93 Difference]: Finished difference Result 27283 states and 39571 transitions. [2023-12-19 00:11:40,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 00:11:40,053 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2023-12-19 00:11:40,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:11:40,089 INFO L225 Difference]: With dead ends: 27283 [2023-12-19 00:11:40,089 INFO L226 Difference]: Without dead ends: 24481 [2023-12-19 00:11:40,100 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-19 00:11:40,100 INFO L413 NwaCegarLoop]: 1594 mSDtfsCounter, 6341 mSDsluCounter, 1983 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6341 SdHoareTripleChecker+Valid, 3577 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 00:11:40,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6341 Valid, 3577 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:11:40,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24481 states. [2023-12-19 00:11:40,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24481 to 16887. [2023-12-19 00:11:40,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16887 states, 16885 states have (on average 1.445839502517027) internal successors, (24413), 16886 states have internal predecessors, (24413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:11:40,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16887 states to 16887 states and 24413 transitions. [2023-12-19 00:11:40,531 INFO L78 Accepts]: Start accepts. Automaton has 16887 states and 24413 transitions. Word has length 73 [2023-12-19 00:11:40,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:11:40,531 INFO L495 AbstractCegarLoop]: Abstraction has 16887 states and 24413 transitions. [2023-12-19 00:11:40,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:11:40,532 INFO L276 IsEmpty]: Start isEmpty. Operand 16887 states and 24413 transitions. [2023-12-19 00:11:40,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-19 00:11:40,533 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:11:40,533 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:11:40,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-19 00:11:40,534 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:11:40,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:11:40,534 INFO L85 PathProgramCache]: Analyzing trace with hash 17294994, now seen corresponding path program 1 times [2023-12-19 00:11:40,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:11:40,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563974313] [2023-12-19 00:11:40,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:11:40,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:11:40,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:11:40,624 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-19 00:11:40,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:11:40,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563974313] [2023-12-19 00:11:40,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563974313] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:11:40,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:11:40,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 00:11:40,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127362196] [2023-12-19 00:11:40,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:11:40,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 00:11:40,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:11:40,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 00:11:40,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-19 00:11:40,626 INFO L87 Difference]: Start difference. First operand 16887 states and 24413 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:11:41,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:11:41,163 INFO L93 Difference]: Finished difference Result 30083 states and 43587 transitions. [2023-12-19 00:11:41,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 00:11:41,164 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2023-12-19 00:11:41,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:11:41,201 INFO L225 Difference]: With dead ends: 30083 [2023-12-19 00:11:41,201 INFO L226 Difference]: Without dead ends: 27281 [2023-12-19 00:11:41,208 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-19 00:11:41,209 INFO L413 NwaCegarLoop]: 1593 mSDtfsCounter, 6295 mSDsluCounter, 2058 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6295 SdHoareTripleChecker+Valid, 3651 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 00:11:41,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6295 Valid, 3651 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:11:41,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27281 states. [2023-12-19 00:11:41,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27281 to 19687. [2023-12-19 00:11:41,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19687 states, 19685 states have (on average 1.4441960883921767) internal successors, (28429), 19686 states have internal predecessors, (28429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:11:41,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19687 states to 19687 states and 28429 transitions. [2023-12-19 00:11:41,720 INFO L78 Accepts]: Start accepts. Automaton has 19687 states and 28429 transitions. Word has length 73 [2023-12-19 00:11:41,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:11:41,721 INFO L495 AbstractCegarLoop]: Abstraction has 19687 states and 28429 transitions. [2023-12-19 00:11:41,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:11:41,721 INFO L276 IsEmpty]: Start isEmpty. Operand 19687 states and 28429 transitions. [2023-12-19 00:11:41,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-19 00:11:41,723 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:11:41,723 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:11:41,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-19 00:11:41,723 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:11:41,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:11:41,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1436271534, now seen corresponding path program 1 times [2023-12-19 00:11:41,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:11:41,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239654713] [2023-12-19 00:11:41,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:11:41,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:11:41,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:11:41,786 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:11:41,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:11:41,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239654713] [2023-12-19 00:11:41,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239654713] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:11:41,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:11:41,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:11:41,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489701146] [2023-12-19 00:11:41,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:11:41,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 00:11:41,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:11:41,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 00:11:41,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:11:41,788 INFO L87 Difference]: Start difference. First operand 19687 states and 28429 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:11:42,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:11:42,086 INFO L93 Difference]: Finished difference Result 37083 states and 53407 transitions. [2023-12-19 00:11:42,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 00:11:42,086 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2023-12-19 00:11:42,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:11:42,108 INFO L225 Difference]: With dead ends: 37083 [2023-12-19 00:11:42,108 INFO L226 Difference]: Without dead ends: 19689 [2023-12-19 00:11:42,125 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:11:42,125 INFO L413 NwaCegarLoop]: 1571 mSDtfsCounter, 45 mSDsluCounter, 1526 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 3097 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 00:11:42,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 3097 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:11:42,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19689 states. [2023-12-19 00:11:42,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19689 to 19687. [2023-12-19 00:11:42,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19687 states, 19685 states have (on average 1.4291592583185166) internal successors, (28133), 19686 states have internal predecessors, (28133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:11:42,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19687 states to 19687 states and 28133 transitions. [2023-12-19 00:11:42,701 INFO L78 Accepts]: Start accepts. Automaton has 19687 states and 28133 transitions. Word has length 74 [2023-12-19 00:11:42,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:11:42,701 INFO L495 AbstractCegarLoop]: Abstraction has 19687 states and 28133 transitions. [2023-12-19 00:11:42,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:11:42,702 INFO L276 IsEmpty]: Start isEmpty. Operand 19687 states and 28133 transitions. [2023-12-19 00:11:42,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-19 00:11:42,703 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:11:42,703 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:11:42,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-19 00:11:42,704 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:11:42,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:11:42,704 INFO L85 PathProgramCache]: Analyzing trace with hash -702984806, now seen corresponding path program 1 times [2023-12-19 00:11:42,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:11:42,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745633393] [2023-12-19 00:11:42,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:11:42,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:11:42,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:11:42,773 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:11:42,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:11:42,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745633393] [2023-12-19 00:11:42,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745633393] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:11:42,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:11:42,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:11:42,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665118539] [2023-12-19 00:11:42,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:11:42,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 00:11:42,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:11:42,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 00:11:42,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:11:42,776 INFO L87 Difference]: Start difference. First operand 19687 states and 28133 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:11:42,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:11:42,954 INFO L93 Difference]: Finished difference Result 26157 states and 37410 transitions. [2023-12-19 00:11:42,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 00:11:42,955 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2023-12-19 00:11:42,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:11:42,966 INFO L225 Difference]: With dead ends: 26157 [2023-12-19 00:11:42,966 INFO L226 Difference]: Without dead ends: 8763 [2023-12-19 00:11:42,980 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:11:42,980 INFO L413 NwaCegarLoop]: 1569 mSDtfsCounter, 39 mSDsluCounter, 1525 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 3094 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 00:11:42,980 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 3094 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:11:42,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8763 states. [2023-12-19 00:11:43,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8763 to 8756. [2023-12-19 00:11:43,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8756 states, 8754 states have (on average 1.4413982179575051) internal successors, (12618), 8755 states have internal predecessors, (12618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:11:43,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8756 states to 8756 states and 12618 transitions. [2023-12-19 00:11:43,207 INFO L78 Accepts]: Start accepts. Automaton has 8756 states and 12618 transitions. Word has length 75 [2023-12-19 00:11:43,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:11:43,208 INFO L495 AbstractCegarLoop]: Abstraction has 8756 states and 12618 transitions. [2023-12-19 00:11:43,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:11:43,208 INFO L276 IsEmpty]: Start isEmpty. Operand 8756 states and 12618 transitions. [2023-12-19 00:11:43,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-19 00:11:43,209 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:11:43,209 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:11:43,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-19 00:11:43,209 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:11:43,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:11:43,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1790502652, now seen corresponding path program 1 times [2023-12-19 00:11:43,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:11:43,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770349628] [2023-12-19 00:11:43,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:11:43,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:11:43,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:11:43,267 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:11:43,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:11:43,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770349628] [2023-12-19 00:11:43,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770349628] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:11:43,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:11:43,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:11:43,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104678399] [2023-12-19 00:11:43,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:11:43,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 00:11:43,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:11:43,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 00:11:43,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:11:43,268 INFO L87 Difference]: Start difference. First operand 8756 states and 12618 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:11:43,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:11:43,341 INFO L93 Difference]: Finished difference Result 11984 states and 17196 transitions. [2023-12-19 00:11:43,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 00:11:43,342 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2023-12-19 00:11:43,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:11:43,348 INFO L225 Difference]: With dead ends: 11984 [2023-12-19 00:11:43,348 INFO L226 Difference]: Without dead ends: 5534 [2023-12-19 00:11:43,353 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:11:43,354 INFO L413 NwaCegarLoop]: 1563 mSDtfsCounter, 41 mSDsluCounter, 1510 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 3073 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 00:11:43,354 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 3073 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:11:43,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5534 states. [2023-12-19 00:11:43,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5534 to 5532. [2023-12-19 00:11:43,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5532 states, 5530 states have (on average 1.4448462929475587) internal successors, (7990), 5531 states have internal predecessors, (7990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:11:43,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5532 states to 5532 states and 7990 transitions. [2023-12-19 00:11:43,444 INFO L78 Accepts]: Start accepts. Automaton has 5532 states and 7990 transitions. Word has length 76 [2023-12-19 00:11:43,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:11:43,444 INFO L495 AbstractCegarLoop]: Abstraction has 5532 states and 7990 transitions. [2023-12-19 00:11:43,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:11:43,445 INFO L276 IsEmpty]: Start isEmpty. Operand 5532 states and 7990 transitions. [2023-12-19 00:11:43,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-19 00:11:43,445 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:11:43,446 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:11:43,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-19 00:11:43,446 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:11:43,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:11:43,447 INFO L85 PathProgramCache]: Analyzing trace with hash -626519094, now seen corresponding path program 1 times [2023-12-19 00:11:43,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:11:43,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730045811] [2023-12-19 00:11:43,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:11:43,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:11:43,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:11:43,500 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:11:43,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:11:43,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730045811] [2023-12-19 00:11:43,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730045811] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:11:43,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:11:43,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:11:43,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821785166] [2023-12-19 00:11:43,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:11:43,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 00:11:43,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:11:43,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 00:11:43,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:11:43,501 INFO L87 Difference]: Start difference. First operand 5532 states and 7990 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:11:43,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:11:43,548 INFO L93 Difference]: Finished difference Result 7148 states and 10254 transitions. [2023-12-19 00:11:43,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 00:11:43,549 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2023-12-19 00:11:43,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:11:43,553 INFO L225 Difference]: With dead ends: 7148 [2023-12-19 00:11:43,553 INFO L226 Difference]: Without dead ends: 3922 [2023-12-19 00:11:43,558 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:11:43,558 INFO L413 NwaCegarLoop]: 1556 mSDtfsCounter, 38 mSDsluCounter, 1502 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 3058 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 00:11:43,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 3058 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:11:43,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3922 states. [2023-12-19 00:11:43,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3922 to 3920. [2023-12-19 00:11:43,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3920 states, 3918 states have (on average 1.4553343542623787) internal successors, (5702), 3919 states have internal predecessors, (5702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:11:43,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3920 states to 3920 states and 5702 transitions. [2023-12-19 00:11:43,618 INFO L78 Accepts]: Start accepts. Automaton has 3920 states and 5702 transitions. Word has length 78 [2023-12-19 00:11:43,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:11:43,618 INFO L495 AbstractCegarLoop]: Abstraction has 3920 states and 5702 transitions. [2023-12-19 00:11:43,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:11:43,619 INFO L276 IsEmpty]: Start isEmpty. Operand 3920 states and 5702 transitions. [2023-12-19 00:11:43,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-19 00:11:43,619 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:11:43,619 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:11:43,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-19 00:11:43,619 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:11:43,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:11:43,620 INFO L85 PathProgramCache]: Analyzing trace with hash 439495192, now seen corresponding path program 1 times [2023-12-19 00:11:43,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:11:43,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302630302] [2023-12-19 00:11:43,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:11:43,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:11:43,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:11:43,667 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:11:43,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:11:43,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302630302] [2023-12-19 00:11:43,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302630302] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:11:43,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:11:43,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:11:43,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696213786] [2023-12-19 00:11:43,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:11:43,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 00:11:43,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:11:43,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 00:11:43,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:11:43,668 INFO L87 Difference]: Start difference. First operand 3920 states and 5702 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:11:43,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:11:43,703 INFO L93 Difference]: Finished difference Result 4730 states and 6822 transitions. [2023-12-19 00:11:43,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 00:11:43,704 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2023-12-19 00:11:43,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:11:43,708 INFO L225 Difference]: With dead ends: 4730 [2023-12-19 00:11:43,708 INFO L226 Difference]: Without dead ends: 3116 [2023-12-19 00:11:43,709 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:11:43,710 INFO L413 NwaCegarLoop]: 1549 mSDtfsCounter, 35 mSDsluCounter, 1494 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 3043 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 00:11:43,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 3043 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:11:43,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3116 states. [2023-12-19 00:11:43,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3116 to 3114. [2023-12-19 00:11:43,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3114 states, 3112 states have (on average 1.4688303341902313) internal successors, (4571), 3113 states have internal predecessors, (4571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:11:43,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3114 states to 3114 states and 4571 transitions. [2023-12-19 00:11:43,746 INFO L78 Accepts]: Start accepts. Automaton has 3114 states and 4571 transitions. Word has length 80 [2023-12-19 00:11:43,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:11:43,746 INFO L495 AbstractCegarLoop]: Abstraction has 3114 states and 4571 transitions. [2023-12-19 00:11:43,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:11:43,746 INFO L276 IsEmpty]: Start isEmpty. Operand 3114 states and 4571 transitions. [2023-12-19 00:11:43,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-19 00:11:43,746 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:11:43,747 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:11:43,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-19 00:11:43,747 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:11:43,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:11:43,747 INFO L85 PathProgramCache]: Analyzing trace with hash 397937126, now seen corresponding path program 1 times [2023-12-19 00:11:43,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:11:43,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252832189] [2023-12-19 00:11:43,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:11:43,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:11:43,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:11:43,830 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 00:11:43,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:11:43,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252832189] [2023-12-19 00:11:43,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252832189] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:11:43,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2137161639] [2023-12-19 00:11:43,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:11:43,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:11:43,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:11:43,833 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 00:11:43,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-19 00:11:43,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:11:43,951 INFO L262 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-19 00:11:43,956 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:11:44,058 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 00:11:44,059 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:11:44,262 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 00:11:44,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2137161639] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:11:44,263 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:11:44,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 8 [2023-12-19 00:11:44,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477876273] [2023-12-19 00:11:44,263 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:11:44,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 00:11:44,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:11:44,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 00:11:44,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2023-12-19 00:11:44,264 INFO L87 Difference]: Start difference. First operand 3114 states and 4571 transitions. Second operand has 8 states, 8 states have (on average 26.0) internal successors, (208), 8 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:11:44,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:11:44,382 INFO L93 Difference]: Finished difference Result 5057 states and 7173 transitions. [2023-12-19 00:11:44,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 00:11:44,383 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 26.0) internal successors, (208), 8 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2023-12-19 00:11:44,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:11:44,386 INFO L225 Difference]: With dead ends: 5057 [2023-12-19 00:11:44,386 INFO L226 Difference]: Without dead ends: 4249 [2023-12-19 00:11:44,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=38, Unknown=0, NotChecked=0, Total=72 [2023-12-19 00:11:44,388 INFO L413 NwaCegarLoop]: 1534 mSDtfsCounter, 1604 mSDsluCounter, 1780 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1604 SdHoareTripleChecker+Valid, 3314 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 00:11:44,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1604 Valid, 3314 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:11:44,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4249 states. [2023-12-19 00:11:44,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4249 to 4182. [2023-12-19 00:11:44,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4182 states, 4180 states have (on average 1.4167464114832535) internal successors, (5922), 4181 states have internal predecessors, (5922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:11:44,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4182 states to 4182 states and 5922 transitions. [2023-12-19 00:11:44,473 INFO L78 Accepts]: Start accepts. Automaton has 4182 states and 5922 transitions. Word has length 82 [2023-12-19 00:11:44,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:11:44,473 INFO L495 AbstractCegarLoop]: Abstraction has 4182 states and 5922 transitions. [2023-12-19 00:11:44,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 26.0) internal successors, (208), 8 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:11:44,473 INFO L276 IsEmpty]: Start isEmpty. Operand 4182 states and 5922 transitions. [2023-12-19 00:11:44,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-12-19 00:11:44,474 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:11:44,474 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:11:44,480 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-19 00:11:44,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-12-19 00:11:44,680 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:11:44,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:11:44,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1527392688, now seen corresponding path program 1 times [2023-12-19 00:11:44,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:11:44,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025285746] [2023-12-19 00:11:44,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:11:44,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:11:44,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:11:45,451 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:11:45,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:11:45,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025285746] [2023-12-19 00:11:45,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025285746] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:11:45,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [746844480] [2023-12-19 00:11:45,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:11:45,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:11:45,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:11:45,453 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 00:11:45,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-19 00:11:45,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:11:45,552 INFO L262 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-19 00:11:45,555 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:11:45,970 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:11:45,970 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:11:46,894 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:11:46,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [746844480] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:11:46,894 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:11:46,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 12] total 31 [2023-12-19 00:11:46,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446361446] [2023-12-19 00:11:46,895 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:11:46,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-19 00:11:46,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:11:46,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-19 00:11:46,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=802, Unknown=0, NotChecked=0, Total=930 [2023-12-19 00:11:46,896 INFO L87 Difference]: Start difference. First operand 4182 states and 5922 transitions. Second operand has 31 states, 31 states have (on average 7.32258064516129) internal successors, (227), 31 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:11:49,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:11:49,424 INFO L93 Difference]: Finished difference Result 11883 states and 15807 transitions. [2023-12-19 00:11:49,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-12-19 00:11:49,425 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 7.32258064516129) internal successors, (227), 31 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2023-12-19 00:11:49,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:11:49,433 INFO L225 Difference]: With dead ends: 11883 [2023-12-19 00:11:49,433 INFO L226 Difference]: Without dead ends: 10102 [2023-12-19 00:11:49,437 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1023 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=911, Invalid=3781, Unknown=0, NotChecked=0, Total=4692 [2023-12-19 00:11:49,437 INFO L413 NwaCegarLoop]: 1498 mSDtfsCounter, 18102 mSDsluCounter, 9498 mSDsCounter, 0 mSdLazyCounter, 1131 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18102 SdHoareTripleChecker+Valid, 10996 SdHoareTripleChecker+Invalid, 1191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 00:11:49,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18102 Valid, 10996 Invalid, 1191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1131 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 00:11:49,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10102 states. [2023-12-19 00:11:49,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10102 to 9528. [2023-12-19 00:11:49,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9528 states, 9526 states have (on average 1.3443208062145706) internal successors, (12806), 9527 states have internal predecessors, (12806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:11:49,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9528 states to 9528 states and 12806 transitions. [2023-12-19 00:11:49,718 INFO L78 Accepts]: Start accepts. Automaton has 9528 states and 12806 transitions. Word has length 83 [2023-12-19 00:11:49,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:11:49,718 INFO L495 AbstractCegarLoop]: Abstraction has 9528 states and 12806 transitions. [2023-12-19 00:11:49,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 7.32258064516129) internal successors, (227), 31 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:11:49,719 INFO L276 IsEmpty]: Start isEmpty. Operand 9528 states and 12806 transitions. [2023-12-19 00:11:49,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-12-19 00:11:49,719 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:11:49,719 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:11:49,727 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-19 00:11:49,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-12-19 00:11:49,925 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:11:49,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:11:49,926 INFO L85 PathProgramCache]: Analyzing trace with hash 577648048, now seen corresponding path program 1 times [2023-12-19 00:11:49,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:11:49,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130340782] [2023-12-19 00:11:49,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:11:49,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:11:49,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:11:50,234 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:11:50,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:11:50,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130340782] [2023-12-19 00:11:50,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130340782] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:11:50,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1961847782] [2023-12-19 00:11:50,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:11:50,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:11:50,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:11:50,236 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 00:11:50,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-19 00:11:50,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:11:50,339 INFO L262 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-19 00:11:50,341 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:11:50,797 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:11:50,797 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:11:51,512 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:11:51,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1961847782] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:11:51,512 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:11:51,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 28 [2023-12-19 00:11:51,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613786153] [2023-12-19 00:11:51,512 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:11:51,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-19 00:11:51,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:11:51,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-19 00:11:51,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=619, Unknown=0, NotChecked=0, Total=756 [2023-12-19 00:11:51,513 INFO L87 Difference]: Start difference. First operand 9528 states and 12806 transitions. Second operand has 28 states, 28 states have (on average 7.714285714285714) internal successors, (216), 28 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:11:52,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:11:52,322 INFO L93 Difference]: Finished difference Result 17052 states and 22460 transitions. [2023-12-19 00:11:52,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-19 00:11:52,322 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 7.714285714285714) internal successors, (216), 28 states have internal predecessors, (216), 0 states have call successors, (0), 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 83 [2023-12-19 00:11:52,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:11:52,330 INFO L225 Difference]: With dead ends: 17052 [2023-12-19 00:11:52,330 INFO L226 Difference]: Without dead ends: 10268 [2023-12-19 00:11:52,333 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=448, Invalid=1444, Unknown=0, NotChecked=0, Total=1892 [2023-12-19 00:11:52,333 INFO L413 NwaCegarLoop]: 1510 mSDtfsCounter, 12230 mSDsluCounter, 6490 mSDsCounter, 0 mSdLazyCounter, 686 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12230 SdHoareTripleChecker+Valid, 8000 SdHoareTripleChecker+Invalid, 708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 00:11:52,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12230 Valid, 8000 Invalid, 708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 686 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 00:11:52,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10268 states. [2023-12-19 00:11:52,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10268 to 9384. [2023-12-19 00:11:52,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9384 states, 9382 states have (on average 1.3357493071839692) internal successors, (12532), 9383 states have internal predecessors, (12532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:11:52,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9384 states to 9384 states and 12532 transitions. [2023-12-19 00:11:52,548 INFO L78 Accepts]: Start accepts. Automaton has 9384 states and 12532 transitions. Word has length 83 [2023-12-19 00:11:52,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:11:52,548 INFO L495 AbstractCegarLoop]: Abstraction has 9384 states and 12532 transitions. [2023-12-19 00:11:52,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 7.714285714285714) internal successors, (216), 28 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:11:52,549 INFO L276 IsEmpty]: Start isEmpty. Operand 9384 states and 12532 transitions. [2023-12-19 00:11:52,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-12-19 00:11:52,549 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:11:52,550 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:11:52,556 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-19 00:11:52,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:11:52,755 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:11:52,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:11:52,756 INFO L85 PathProgramCache]: Analyzing trace with hash -900611408, now seen corresponding path program 1 times [2023-12-19 00:11:52,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:11:52,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599572460] [2023-12-19 00:11:52,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:11:52,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:11:52,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:11:52,985 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:11:52,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:11:52,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599572460] [2023-12-19 00:11:52,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599572460] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:11:52,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [762253464] [2023-12-19 00:11:52,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:11:52,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:11:52,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:11:52,986 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 00:11:53,012 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-19 00:11:53,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:11:53,075 INFO L262 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-19 00:11:53,077 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:11:53,496 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:11:53,497 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:11:54,250 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:11:54,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [762253464] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:11:54,250 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:11:54,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 28 [2023-12-19 00:11:54,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102254505] [2023-12-19 00:11:54,251 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:11:54,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-19 00:11:54,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:11:54,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-19 00:11:54,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=604, Unknown=0, NotChecked=0, Total=756 [2023-12-19 00:11:54,252 INFO L87 Difference]: Start difference. First operand 9384 states and 12532 transitions. Second operand has 28 states, 28 states have (on average 7.285714285714286) internal successors, (204), 28 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:11:55,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:11:55,121 INFO L93 Difference]: Finished difference Result 17649 states and 23075 transitions. [2023-12-19 00:11:55,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-19 00:11:55,122 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 7.285714285714286) internal successors, (204), 28 states have internal predecessors, (204), 0 states have call successors, (0), 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 83 [2023-12-19 00:11:55,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:11:55,132 INFO L225 Difference]: With dead ends: 17649 [2023-12-19 00:11:55,132 INFO L226 Difference]: Without dead ends: 11704 [2023-12-19 00:11:55,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 373 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=449, Invalid=1357, Unknown=0, NotChecked=0, Total=1806 [2023-12-19 00:11:55,136 INFO L413 NwaCegarLoop]: 1529 mSDtfsCounter, 7842 mSDsluCounter, 6516 mSDsCounter, 0 mSdLazyCounter, 722 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7842 SdHoareTripleChecker+Valid, 8045 SdHoareTripleChecker+Invalid, 740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 00:11:55,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7842 Valid, 8045 Invalid, 740 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 722 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 00:11:55,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11704 states. [2023-12-19 00:11:55,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11704 to 11186. [2023-12-19 00:11:55,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11186 states, 11184 states have (on average 1.3234084406294706) internal successors, (14801), 11185 states have internal predecessors, (14801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:11:55,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11186 states to 11186 states and 14801 transitions. [2023-12-19 00:11:55,409 INFO L78 Accepts]: Start accepts. Automaton has 11186 states and 14801 transitions. Word has length 83 [2023-12-19 00:11:55,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:11:55,410 INFO L495 AbstractCegarLoop]: Abstraction has 11186 states and 14801 transitions. [2023-12-19 00:11:55,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 7.285714285714286) internal successors, (204), 28 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:11:55,410 INFO L276 IsEmpty]: Start isEmpty. Operand 11186 states and 14801 transitions. [2023-12-19 00:11:55,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-12-19 00:11:55,411 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:11:55,411 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:11:55,418 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-19 00:11:55,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-12-19 00:11:55,616 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:11:55,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:11:55,617 INFO L85 PathProgramCache]: Analyzing trace with hash -1230460860, now seen corresponding path program 1 times [2023-12-19 00:11:55,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:11:55,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399515449] [2023-12-19 00:11:55,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:11:55,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:11:55,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:11:55,885 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:11:55,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:11:55,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399515449] [2023-12-19 00:11:55,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399515449] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:11:55,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [404495180] [2023-12-19 00:11:55,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:11:55,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:11:55,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:11:55,887 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 00:11:55,910 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-19 00:11:55,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:11:55,982 INFO L262 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-19 00:11:55,985 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:11:56,519 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:11:56,519 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:11:57,265 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:11:57,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [404495180] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:11:57,266 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:11:57,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 31 [2023-12-19 00:11:57,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242442481] [2023-12-19 00:11:57,266 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:11:57,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-19 00:11:57,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:11:57,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-19 00:11:57,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=784, Unknown=0, NotChecked=0, Total=930 [2023-12-19 00:11:57,267 INFO L87 Difference]: Start difference. First operand 11186 states and 14801 transitions. Second operand has 31 states, 31 states have (on average 7.612903225806452) internal successors, (236), 31 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:11:59,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:11:59,850 INFO L93 Difference]: Finished difference Result 36092 states and 46422 transitions. [2023-12-19 00:11:59,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-12-19 00:11:59,851 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 7.612903225806452) internal successors, (236), 31 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2023-12-19 00:11:59,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:11:59,877 INFO L225 Difference]: With dead ends: 36092 [2023-12-19 00:11:59,877 INFO L226 Difference]: Without dead ends: 27601 [2023-12-19 00:11:59,888 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 982 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=937, Invalid=3485, Unknown=0, NotChecked=0, Total=4422 [2023-12-19 00:11:59,888 INFO L413 NwaCegarLoop]: 1506 mSDtfsCounter, 19029 mSDsluCounter, 8056 mSDsCounter, 0 mSdLazyCounter, 1015 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19029 SdHoareTripleChecker+Valid, 9562 SdHoareTripleChecker+Invalid, 1057 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1015 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 00:11:59,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19029 Valid, 9562 Invalid, 1057 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1015 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 00:11:59,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27601 states. [2023-12-19 00:12:00,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27601 to 26353. [2023-12-19 00:12:00,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26353 states, 26351 states have (on average 1.27433493985048) internal successors, (33580), 26352 states have internal predecessors, (33580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:12:00,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26353 states to 26353 states and 33580 transitions. [2023-12-19 00:12:00,678 INFO L78 Accepts]: Start accepts. Automaton has 26353 states and 33580 transitions. Word has length 84 [2023-12-19 00:12:00,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:12:00,678 INFO L495 AbstractCegarLoop]: Abstraction has 26353 states and 33580 transitions. [2023-12-19 00:12:00,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 7.612903225806452) internal successors, (236), 31 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:12:00,678 INFO L276 IsEmpty]: Start isEmpty. Operand 26353 states and 33580 transitions. [2023-12-19 00:12:00,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-19 00:12:00,680 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:12:00,680 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:12:00,686 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-19 00:12:00,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-12-19 00:12:00,887 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:12:00,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:12:00,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1688504568, now seen corresponding path program 1 times [2023-12-19 00:12:00,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:12:00,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025482723] [2023-12-19 00:12:00,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:12:00,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:12:00,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:12:03,040 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:12:03,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:12:03,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025482723] [2023-12-19 00:12:03,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025482723] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:12:03,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [743281710] [2023-12-19 00:12:03,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:12:03,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:12:03,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:12:03,042 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 00:12:03,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-19 00:12:03,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:12:03,138 INFO L262 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-19 00:12:03,140 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:12:04,169 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:12:04,170 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:12:04,803 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:12:04,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [743281710] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:12:04,803 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:12:04,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 11, 11] total 50 [2023-12-19 00:12:04,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398144443] [2023-12-19 00:12:04,804 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:12:04,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-12-19 00:12:04,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:12:04,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-12-19 00:12:04,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=2277, Unknown=0, NotChecked=0, Total=2450 [2023-12-19 00:12:04,805 INFO L87 Difference]: Start difference. First operand 26353 states and 33580 transitions. Second operand has 50 states, 50 states have (on average 4.68) internal successors, (234), 50 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:12:41,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:12:41,353 INFO L93 Difference]: Finished difference Result 45511 states and 57005 transitions. [2023-12-19 00:12:41,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 238 states. [2023-12-19 00:12:41,354 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 4.68) internal successors, (234), 50 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2023-12-19 00:12:41,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:12:41,385 INFO L225 Difference]: With dead ends: 45511 [2023-12-19 00:12:41,385 INFO L226 Difference]: Without dead ends: 36564 [2023-12-19 00:12:41,400 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 437 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 283 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31644 ImplicationChecksByTransitivity, 31.0s TimeCoverageRelationStatistics Valid=12521, Invalid=68419, Unknown=0, NotChecked=0, Total=80940 [2023-12-19 00:12:41,401 INFO L413 NwaCegarLoop]: 1713 mSDtfsCounter, 30221 mSDsluCounter, 35273 mSDsCounter, 0 mSdLazyCounter, 8913 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30221 SdHoareTripleChecker+Valid, 36986 SdHoareTripleChecker+Invalid, 9088 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 8913 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2023-12-19 00:12:41,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30221 Valid, 36986 Invalid, 9088 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [175 Valid, 8913 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2023-12-19 00:12:41,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36564 states. [2023-12-19 00:12:42,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36564 to 25690. [2023-12-19 00:12:42,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25690 states, 25688 states have (on average 1.271371846776705) internal successors, (32659), 25689 states have internal predecessors, (32659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:12:42,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25690 states to 25690 states and 32659 transitions. [2023-12-19 00:12:42,373 INFO L78 Accepts]: Start accepts. Automaton has 25690 states and 32659 transitions. Word has length 86 [2023-12-19 00:12:42,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:12:42,374 INFO L495 AbstractCegarLoop]: Abstraction has 25690 states and 32659 transitions. [2023-12-19 00:12:42,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 4.68) internal successors, (234), 50 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:12:42,374 INFO L276 IsEmpty]: Start isEmpty. Operand 25690 states and 32659 transitions. [2023-12-19 00:12:42,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-19 00:12:42,375 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:12:42,375 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:12:42,382 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-19 00:12:42,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-12-19 00:12:42,576 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:12:42,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:12:42,578 INFO L85 PathProgramCache]: Analyzing trace with hash 301365880, now seen corresponding path program 1 times [2023-12-19 00:12:42,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:12:42,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559770103] [2023-12-19 00:12:42,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:12:42,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:12:42,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:12:43,040 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:12:43,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:12:43,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559770103] [2023-12-19 00:12:43,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559770103] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:12:43,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [73737998] [2023-12-19 00:12:43,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:12:43,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:12:43,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:12:43,041 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 00:12:43,043 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-19 00:12:43,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:12:43,158 INFO L262 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 39 conjunts are in the unsatisfiable core [2023-12-19 00:12:43,160 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:12:45,483 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:12:45,484 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:12:47,995 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:12:47,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [73737998] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:12:47,995 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:12:47,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 20, 23] total 53 [2023-12-19 00:12:47,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136675742] [2023-12-19 00:12:47,996 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:12:47,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-12-19 00:12:47,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:12:47,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-12-19 00:12:47,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=332, Invalid=2424, Unknown=0, NotChecked=0, Total=2756 [2023-12-19 00:12:47,997 INFO L87 Difference]: Start difference. First operand 25690 states and 32659 transitions. Second operand has 53 states, 53 states have (on average 4.226415094339623) internal successors, (224), 53 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:13:56,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:13:56,841 INFO L93 Difference]: Finished difference Result 128168 states and 160246 transitions. [2023-12-19 00:13:56,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 299 states. [2023-12-19 00:13:56,841 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 4.226415094339623) internal successors, (224), 53 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2023-12-19 00:13:56,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:13:56,979 INFO L225 Difference]: With dead ends: 128168 [2023-12-19 00:13:56,979 INFO L226 Difference]: Without dead ends: 115965 [2023-12-19 00:13:57,005 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 481 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 348 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53519 ImplicationChecksByTransitivity, 61.1s TimeCoverageRelationStatistics Valid=19156, Invalid=102994, Unknown=0, NotChecked=0, Total=122150 [2023-12-19 00:13:57,006 INFO L413 NwaCegarLoop]: 1579 mSDtfsCounter, 19076 mSDsluCounter, 16724 mSDsCounter, 0 mSdLazyCounter, 5312 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19076 SdHoareTripleChecker+Valid, 18303 SdHoareTripleChecker+Invalid, 5503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 5312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-12-19 00:13:57,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19076 Valid, 18303 Invalid, 5503 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [191 Valid, 5312 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2023-12-19 00:13:57,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115965 states. [2023-12-19 00:13:58,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115965 to 26571. [2023-12-19 00:13:58,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26571 states, 26569 states have (on average 1.269185893334337) internal successors, (33721), 26570 states have internal predecessors, (33721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:13:58,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26571 states to 26571 states and 33721 transitions. [2023-12-19 00:13:58,632 INFO L78 Accepts]: Start accepts. Automaton has 26571 states and 33721 transitions. Word has length 86 [2023-12-19 00:13:58,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:13:58,632 INFO L495 AbstractCegarLoop]: Abstraction has 26571 states and 33721 transitions. [2023-12-19 00:13:58,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 4.226415094339623) internal successors, (224), 53 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:13:58,633 INFO L276 IsEmpty]: Start isEmpty. Operand 26571 states and 33721 transitions. [2023-12-19 00:13:58,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-19 00:13:58,633 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:13:58,633 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:13:58,639 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-19 00:13:58,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:13:58,834 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:13:58,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:13:58,834 INFO L85 PathProgramCache]: Analyzing trace with hash -537853704, now seen corresponding path program 1 times [2023-12-19 00:13:58,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:13:58,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345233091] [2023-12-19 00:13:58,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:13:58,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:13:58,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:13:59,404 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:13:59,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:13:59,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345233091] [2023-12-19 00:13:59,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345233091] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:13:59,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [206720919] [2023-12-19 00:13:59,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:13:59,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:13:59,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:13:59,406 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 00:13:59,408 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-19 00:13:59,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:13:59,517 INFO L262 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-19 00:13:59,519 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:14:00,071 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:14:00,083 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:14:00,973 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:14:00,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [206720919] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:14:00,974 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:14:00,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 15] total 35 [2023-12-19 00:14:00,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495595094] [2023-12-19 00:14:00,974 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:14:00,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-12-19 00:14:00,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:14:00,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-12-19 00:14:00,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=1037, Unknown=0, NotChecked=0, Total=1190 [2023-12-19 00:14:00,975 INFO L87 Difference]: Start difference. First operand 26571 states and 33721 transitions. Second operand has 35 states, 35 states have (on average 7.0285714285714285) internal successors, (246), 35 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:14:06,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:14:06,676 INFO L93 Difference]: Finished difference Result 44503 states and 56114 transitions. [2023-12-19 00:14:06,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2023-12-19 00:14:06,676 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 7.0285714285714285) internal successors, (246), 35 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2023-12-19 00:14:06,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:14:06,706 INFO L225 Difference]: With dead ends: 44503 [2023-12-19 00:14:06,706 INFO L226 Difference]: Without dead ends: 28765 [2023-12-19 00:14:06,718 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1851 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=1873, Invalid=6137, Unknown=0, NotChecked=0, Total=8010 [2023-12-19 00:14:06,718 INFO L413 NwaCegarLoop]: 1534 mSDtfsCounter, 12019 mSDsluCounter, 18359 mSDsCounter, 0 mSdLazyCounter, 1236 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12019 SdHoareTripleChecker+Valid, 19893 SdHoareTripleChecker+Invalid, 1292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 00:14:06,718 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12019 Valid, 19893 Invalid, 1292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1236 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 00:14:06,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28765 states. [2023-12-19 00:14:08,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28765 to 27616. [2023-12-19 00:14:08,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27616 states, 27614 states have (on average 1.2665676830593178) internal successors, (34975), 27615 states have internal predecessors, (34975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:14:08,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27616 states to 27616 states and 34975 transitions. [2023-12-19 00:14:08,177 INFO L78 Accepts]: Start accepts. Automaton has 27616 states and 34975 transitions. Word has length 87 [2023-12-19 00:14:08,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:14:08,177 INFO L495 AbstractCegarLoop]: Abstraction has 27616 states and 34975 transitions. [2023-12-19 00:14:08,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 7.0285714285714285) internal successors, (246), 35 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:14:08,177 INFO L276 IsEmpty]: Start isEmpty. Operand 27616 states and 34975 transitions. [2023-12-19 00:14:08,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-19 00:14:08,181 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:14:08,181 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:14:08,188 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-19 00:14:08,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:14:08,388 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:14:08,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:14:08,388 INFO L85 PathProgramCache]: Analyzing trace with hash 997631972, now seen corresponding path program 1 times [2023-12-19 00:14:08,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:14:08,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086102070] [2023-12-19 00:14:08,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:14:08,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:14:08,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:14:08,492 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:14:08,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:14:08,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086102070] [2023-12-19 00:14:08,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086102070] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:14:08,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:14:08,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:14:08,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460168577] [2023-12-19 00:14:08,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:14:08,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 00:14:08,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:14:08,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 00:14:08,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 00:14:08,494 INFO L87 Difference]: Start difference. First operand 27616 states and 34975 transitions. Second operand has 4 states, 4 states have (on average 32.5) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:14:12,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:14:12,952 INFO L93 Difference]: Finished difference Result 31410 states and 41080 transitions. [2023-12-19 00:14:12,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 00:14:12,953 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2023-12-19 00:14:12,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:14:12,980 INFO L225 Difference]: With dead ends: 31410 [2023-12-19 00:14:12,980 INFO L226 Difference]: Without dead ends: 29118 [2023-12-19 00:14:12,987 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 00:14:12,987 INFO L413 NwaCegarLoop]: 791 mSDtfsCounter, 789 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 3809 mSolverCounterSat, 664 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 789 SdHoareTripleChecker+Valid, 908 SdHoareTripleChecker+Invalid, 4473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 664 IncrementalHoareTripleChecker+Valid, 3809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-19 00:14:12,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [789 Valid, 908 Invalid, 4473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [664 Valid, 3809 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-19 00:14:13,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29118 states. [2023-12-19 00:14:14,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29118 to 29118. [2023-12-19 00:14:14,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29118 states, 29116 states have (on average 1.2556669872235198) internal successors, (36560), 29117 states have internal predecessors, (36560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:14:14,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29118 states to 29118 states and 36560 transitions. [2023-12-19 00:14:14,453 INFO L78 Accepts]: Start accepts. Automaton has 29118 states and 36560 transitions. Word has length 130 [2023-12-19 00:14:14,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:14:14,453 INFO L495 AbstractCegarLoop]: Abstraction has 29118 states and 36560 transitions. [2023-12-19 00:14:14,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:14:14,453 INFO L276 IsEmpty]: Start isEmpty. Operand 29118 states and 36560 transitions. [2023-12-19 00:14:14,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-19 00:14:14,459 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:14:14,459 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:14:14,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-12-19 00:14:14,459 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:14:14,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:14:14,459 INFO L85 PathProgramCache]: Analyzing trace with hash -1948015120, now seen corresponding path program 1 times [2023-12-19 00:14:14,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:14:14,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838123045] [2023-12-19 00:14:14,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:14:14,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:14:14,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:14:14,990 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 30 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:14:14,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:14:14,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838123045] [2023-12-19 00:14:14,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838123045] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:14:14,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [49111595] [2023-12-19 00:14:14,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:14:14,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:14:14,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:14:14,992 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 00:14:14,992 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-19 00:14:15,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:14:15,126 INFO L262 TraceCheckSpWp]: Trace formula consists of 608 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-19 00:14:15,128 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:14:15,917 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 26 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:14:15,917 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:14:17,424 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 22 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:14:17,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [49111595] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:14:17,425 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:14:17,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11, 11] total 35 [2023-12-19 00:14:17,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304153332] [2023-12-19 00:14:17,425 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:14:17,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-12-19 00:14:17,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:14:17,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-12-19 00:14:17,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=1135, Unknown=0, NotChecked=0, Total=1260 [2023-12-19 00:14:17,426 INFO L87 Difference]: Start difference. First operand 29118 states and 36560 transitions. Second operand has 36 states, 36 states have (on average 10.472222222222221) internal successors, (377), 35 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:14:23,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:14:23,253 INFO L93 Difference]: Finished difference Result 48276 states and 60427 transitions. [2023-12-19 00:14:23,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2023-12-19 00:14:23,254 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 10.472222222222221) internal successors, (377), 35 states have internal predecessors, (377), 0 states have call successors, (0), 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 134 [2023-12-19 00:14:23,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:14:23,286 INFO L225 Difference]: With dead ends: 48276 [2023-12-19 00:14:23,287 INFO L226 Difference]: Without dead ends: 30682 [2023-12-19 00:14:23,301 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2111 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=1644, Invalid=7668, Unknown=0, NotChecked=0, Total=9312 [2023-12-19 00:14:23,302 INFO L413 NwaCegarLoop]: 1467 mSDtfsCounter, 24900 mSDsluCounter, 17982 mSDsCounter, 0 mSdLazyCounter, 1887 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24900 SdHoareTripleChecker+Valid, 19449 SdHoareTripleChecker+Invalid, 1956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1887 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-19 00:14:23,302 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24900 Valid, 19449 Invalid, 1956 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1887 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-19 00:14:23,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30682 states. [2023-12-19 00:14:24,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30682 to 29118. [2023-12-19 00:14:24,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29118 states, 29116 states have (on average 1.2444703942849293) internal successors, (36234), 29117 states have internal predecessors, (36234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:14:24,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29118 states to 29118 states and 36234 transitions. [2023-12-19 00:14:24,907 INFO L78 Accepts]: Start accepts. Automaton has 29118 states and 36234 transitions. Word has length 134 [2023-12-19 00:14:24,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:14:24,907 INFO L495 AbstractCegarLoop]: Abstraction has 29118 states and 36234 transitions. [2023-12-19 00:14:24,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 10.472222222222221) internal successors, (377), 35 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:14:24,907 INFO L276 IsEmpty]: Start isEmpty. Operand 29118 states and 36234 transitions. [2023-12-19 00:14:24,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-19 00:14:24,911 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:14:24,912 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:14:24,916 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-19 00:14:25,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:14:25,112 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:14:25,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:14:25,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1363002568, now seen corresponding path program 1 times [2023-12-19 00:14:25,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:14:25,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86388423] [2023-12-19 00:14:25,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:14:25,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:14:25,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:14:25,616 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 40 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:14:25,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:14:25,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86388423] [2023-12-19 00:14:25,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86388423] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:14:25,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [681848910] [2023-12-19 00:14:25,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:14:25,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:14:25,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:14:25,618 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 00:14:25,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-19 00:14:25,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:14:25,754 INFO L262 TraceCheckSpWp]: Trace formula consists of 610 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-19 00:14:25,756 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:14:26,245 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 42 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:14:26,245 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:14:28,170 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 40 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:14:28,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [681848910] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:14:28,170 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:14:28,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 26 [2023-12-19 00:14:28,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423619774] [2023-12-19 00:14:28,170 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:14:28,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-12-19 00:14:28,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:14:28,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-12-19 00:14:28,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=603, Unknown=0, NotChecked=0, Total=702 [2023-12-19 00:14:28,172 INFO L87 Difference]: Start difference. First operand 29118 states and 36234 transitions. Second operand has 27 states, 27 states have (on average 10.444444444444445) internal successors, (282), 26 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:14:31,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:14:31,692 INFO L93 Difference]: Finished difference Result 90864 states and 112724 transitions. [2023-12-19 00:14:31,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-19 00:14:31,693 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 10.444444444444445) internal successors, (282), 26 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2023-12-19 00:14:31,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:14:31,777 INFO L225 Difference]: With dead ends: 90864 [2023-12-19 00:14:31,777 INFO L226 Difference]: Without dead ends: 67246 [2023-12-19 00:14:31,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 254 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 414 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=505, Invalid=1751, Unknown=0, NotChecked=0, Total=2256 [2023-12-19 00:14:31,791 INFO L413 NwaCegarLoop]: 1494 mSDtfsCounter, 10379 mSDsluCounter, 13444 mSDsCounter, 0 mSdLazyCounter, 800 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10379 SdHoareTripleChecker+Valid, 14938 SdHoareTripleChecker+Invalid, 819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 800 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 00:14:31,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10379 Valid, 14938 Invalid, 819 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 800 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 00:14:31,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67246 states. [2023-12-19 00:14:34,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67246 to 56530. [2023-12-19 00:14:34,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56530 states, 56528 states have (on average 1.2288423436173224) internal successors, (69464), 56529 states have internal predecessors, (69464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:14:35,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56530 states to 56530 states and 69464 transitions. [2023-12-19 00:14:35,015 INFO L78 Accepts]: Start accepts. Automaton has 56530 states and 69464 transitions. Word has length 135 [2023-12-19 00:14:35,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:14:35,016 INFO L495 AbstractCegarLoop]: Abstraction has 56530 states and 69464 transitions. [2023-12-19 00:14:35,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 10.444444444444445) internal successors, (282), 26 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:14:35,016 INFO L276 IsEmpty]: Start isEmpty. Operand 56530 states and 69464 transitions. [2023-12-19 00:14:35,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-19 00:14:35,024 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:14:35,025 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:14:35,032 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-19 00:14:35,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2023-12-19 00:14:35,230 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:14:35,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:14:35,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1491251620, now seen corresponding path program 1 times [2023-12-19 00:14:35,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:14:35,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166980267] [2023-12-19 00:14:35,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:14:35,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:14:35,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:14:36,138 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 31 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:14:36,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:14:36,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166980267] [2023-12-19 00:14:36,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166980267] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:14:36,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [960567997] [2023-12-19 00:14:36,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:14:36,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:14:36,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:14:36,142 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 00:14:36,145 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-19 00:14:36,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:14:36,271 INFO L262 TraceCheckSpWp]: Trace formula consists of 612 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-19 00:14:36,273 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:14:38,171 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 13 proven. 97 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:14:38,172 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:14:41,404 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 13 proven. 97 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:14:41,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [960567997] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:14:41,405 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:14:41,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 18] total 53 [2023-12-19 00:14:41,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443395673] [2023-12-19 00:14:41,405 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:14:41,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-12-19 00:14:41,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:14:41,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-12-19 00:14:41,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=2543, Unknown=0, NotChecked=0, Total=2756 [2023-12-19 00:14:41,406 INFO L87 Difference]: Start difference. First operand 56530 states and 69464 transitions. Second operand has 53 states, 53 states have (on average 7.433962264150943) internal successors, (394), 53 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:15:59,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:15:59,538 INFO L93 Difference]: Finished difference Result 160994 states and 193772 transitions. [2023-12-19 00:15:59,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 364 states. [2023-12-19 00:15:59,539 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 7.433962264150943) internal successors, (394), 53 states have internal predecessors, (394), 0 states have call successors, (0), 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 136 [2023-12-19 00:15:59,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:15:59,678 INFO L225 Difference]: With dead ends: 160994 [2023-12-19 00:15:59,678 INFO L226 Difference]: Without dead ends: 139994 [2023-12-19 00:15:59,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 651 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 412 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70525 ImplicationChecksByTransitivity, 62.9s TimeCoverageRelationStatistics Valid=17382, Invalid=153600, Unknown=0, NotChecked=0, Total=170982 [2023-12-19 00:15:59,701 INFO L413 NwaCegarLoop]: 1665 mSDtfsCounter, 30331 mSDsluCounter, 41032 mSDsCounter, 0 mSdLazyCounter, 8889 mSolverCounterSat, 394 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30331 SdHoareTripleChecker+Valid, 42697 SdHoareTripleChecker+Invalid, 9283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 394 IncrementalHoareTripleChecker+Valid, 8889 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2023-12-19 00:15:59,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30331 Valid, 42697 Invalid, 9283 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [394 Valid, 8889 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2023-12-19 00:15:59,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139994 states. [2023-12-19 00:16:05,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139994 to 81518. [2023-12-19 00:16:05,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81518 states, 81516 states have (on average 1.2199568182933411) internal successors, (99446), 81517 states have internal predecessors, (99446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:16:05,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81518 states to 81518 states and 99446 transitions. [2023-12-19 00:16:05,583 INFO L78 Accepts]: Start accepts. Automaton has 81518 states and 99446 transitions. Word has length 136 [2023-12-19 00:16:05,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:16:05,583 INFO L495 AbstractCegarLoop]: Abstraction has 81518 states and 99446 transitions. [2023-12-19 00:16:05,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 7.433962264150943) internal successors, (394), 53 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:16:05,584 INFO L276 IsEmpty]: Start isEmpty. Operand 81518 states and 99446 transitions. [2023-12-19 00:16:05,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-19 00:16:05,592 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:16:05,592 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:16:05,599 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-19 00:16:05,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2023-12-19 00:16:05,793 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:16:05,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:16:05,793 INFO L85 PathProgramCache]: Analyzing trace with hash 104112932, now seen corresponding path program 1 times [2023-12-19 00:16:05,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:16:05,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478614219] [2023-12-19 00:16:05,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:16:05,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:16:05,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:16:06,238 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 49 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:16:06,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:16:06,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478614219] [2023-12-19 00:16:06,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478614219] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:16:06,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1712710378] [2023-12-19 00:16:06,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:16:06,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:16:06,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:16:06,240 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 00:16:06,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-19 00:16:06,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:16:06,367 INFO L262 TraceCheckSpWp]: Trace formula consists of 612 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-19 00:16:06,369 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:16:07,093 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 57 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:16:07,094 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:16:08,399 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 49 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:16:08,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1712710378] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:16:08,399 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:16:08,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 26 [2023-12-19 00:16:08,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825163162] [2023-12-19 00:16:08,399 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:16:08,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-12-19 00:16:08,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:16:08,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-12-19 00:16:08,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=602, Unknown=0, NotChecked=0, Total=702 [2023-12-19 00:16:08,400 INFO L87 Difference]: Start difference. First operand 81518 states and 99446 transitions. Second operand has 27 states, 27 states have (on average 10.407407407407407) internal successors, (281), 26 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:16:13,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:16:13,735 INFO L93 Difference]: Finished difference Result 123274 states and 150223 transitions. [2023-12-19 00:16:13,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-19 00:16:13,736 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 10.407407407407407) internal successors, (281), 26 states have internal predecessors, (281), 0 states have call successors, (0), 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 136 [2023-12-19 00:16:13,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:16:13,825 INFO L225 Difference]: With dead ends: 123274 [2023-12-19 00:16:13,826 INFO L226 Difference]: Without dead ends: 72602 [2023-12-19 00:16:13,847 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 257 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 284 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=352, Invalid=1288, Unknown=0, NotChecked=0, Total=1640 [2023-12-19 00:16:13,847 INFO L413 NwaCegarLoop]: 1489 mSDtfsCounter, 15939 mSDsluCounter, 9086 mSDsCounter, 0 mSdLazyCounter, 600 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15939 SdHoareTripleChecker+Valid, 10575 SdHoareTripleChecker+Invalid, 625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 00:16:13,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15939 Valid, 10575 Invalid, 625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 600 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 00:16:13,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72602 states. [2023-12-19 00:16:18,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72602 to 71526. [2023-12-19 00:16:18,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71526 states, 71524 states have (on average 1.212683854370561) internal successors, (86736), 71525 states have internal predecessors, (86736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:16:18,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71526 states to 71526 states and 86736 transitions. [2023-12-19 00:16:18,917 INFO L78 Accepts]: Start accepts. Automaton has 71526 states and 86736 transitions. Word has length 136 [2023-12-19 00:16:18,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:16:18,918 INFO L495 AbstractCegarLoop]: Abstraction has 71526 states and 86736 transitions. [2023-12-19 00:16:18,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 10.407407407407407) internal successors, (281), 26 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:16:18,918 INFO L276 IsEmpty]: Start isEmpty. Operand 71526 states and 86736 transitions. [2023-12-19 00:16:18,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-12-19 00:16:18,927 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:16:18,927 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:16:18,931 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-19 00:16:19,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-12-19 00:16:19,128 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:16:19,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:16:19,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1091004872, now seen corresponding path program 1 times [2023-12-19 00:16:19,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:16:19,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345205656] [2023-12-19 00:16:19,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:16:19,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:16:19,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:16:20,849 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 13 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:16:20,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:16:20,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345205656] [2023-12-19 00:16:20,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345205656] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:16:20,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1301634144] [2023-12-19 00:16:20,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:16:20,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:16:20,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:16:20,850 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 00:16:20,851 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-19 00:16:20,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:16:20,986 INFO L262 TraceCheckSpWp]: Trace formula consists of 614 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-19 00:16:20,988 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:16:22,728 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 22 proven. 89 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:16:22,729 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:16:26,021 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 22 proven. 89 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:16:26,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1301634144] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:16:26,021 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:16:26,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 20, 19] total 67 [2023-12-19 00:16:26,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019256793] [2023-12-19 00:16:26,021 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:16:26,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2023-12-19 00:16:26,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:16:26,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2023-12-19 00:16:26,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=4166, Unknown=0, NotChecked=0, Total=4422 [2023-12-19 00:16:26,023 INFO L87 Difference]: Start difference. First operand 71526 states and 86736 transitions. Second operand has 67 states, 67 states have (on average 5.880597014925373) internal successors, (394), 67 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:19:08,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:19:08,877 INFO L93 Difference]: Finished difference Result 308705 states and 371089 transitions. [2023-12-19 00:19:08,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 530 states. [2023-12-19 00:19:08,877 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 5.880597014925373) internal successors, (394), 67 states have internal predecessors, (394), 0 states have call successors, (0), 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 137 [2023-12-19 00:19:08,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:19:09,212 INFO L225 Difference]: With dead ends: 308705 [2023-12-19 00:19:09,212 INFO L226 Difference]: Without dead ends: 268187 [2023-12-19 00:19:09,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 832 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 593 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151464 ImplicationChecksByTransitivity, 127.8s TimeCoverageRelationStatistics Valid=30998, Invalid=322432, Unknown=0, NotChecked=0, Total=353430 [2023-12-19 00:19:09,275 INFO L413 NwaCegarLoop]: 1585 mSDtfsCounter, 37959 mSDsluCounter, 52071 mSDsCounter, 0 mSdLazyCounter, 13291 mSolverCounterSat, 596 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37959 SdHoareTripleChecker+Valid, 53656 SdHoareTripleChecker+Invalid, 13887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 596 IncrementalHoareTripleChecker+Valid, 13291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.3s IncrementalHoareTripleChecker+Time [2023-12-19 00:19:09,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37959 Valid, 53656 Invalid, 13887 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [596 Valid, 13291 Invalid, 0 Unknown, 0 Unchecked, 12.3s Time] [2023-12-19 00:19:09,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268187 states. [2023-12-19 00:19:19,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268187 to 103413. [2023-12-19 00:19:19,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103413 states, 103411 states have (on average 1.2018257245360744) internal successors, (124282), 103412 states have internal predecessors, (124282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:19:19,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103413 states to 103413 states and 124282 transitions. [2023-12-19 00:19:19,694 INFO L78 Accepts]: Start accepts. Automaton has 103413 states and 124282 transitions. Word has length 137 [2023-12-19 00:19:19,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:19:19,695 INFO L495 AbstractCegarLoop]: Abstraction has 103413 states and 124282 transitions. [2023-12-19 00:19:19,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 5.880597014925373) internal successors, (394), 67 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:19:19,695 INFO L276 IsEmpty]: Start isEmpty. Operand 103413 states and 124282 transitions. [2023-12-19 00:19:19,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-19 00:19:19,703 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:19:19,703 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:19:19,712 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-19 00:19:19,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2023-12-19 00:19:19,904 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:19:19,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:19:19,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1695630128, now seen corresponding path program 1 times [2023-12-19 00:19:19,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:19:19,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462154513] [2023-12-19 00:19:19,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:19:19,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:19:19,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:19:21,710 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 31 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:19:21,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:19:21,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462154513] [2023-12-19 00:19:21,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462154513] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:19:21,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [340385713] [2023-12-19 00:19:21,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:19:21,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:19:21,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:19:21,712 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 00:19:21,713 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-19 00:19:21,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:19:21,838 INFO L262 TraceCheckSpWp]: Trace formula consists of 613 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-19 00:19:21,839 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:19:23,338 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 41 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:19:23,338 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:19:26,166 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 41 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:19:26,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [340385713] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:19:26,166 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:19:26,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 17, 18] total 64 [2023-12-19 00:19:26,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777185380] [2023-12-19 00:19:26,167 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:19:26,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2023-12-19 00:19:26,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:19:26,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2023-12-19 00:19:26,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=3808, Unknown=0, NotChecked=0, Total=4032 [2023-12-19 00:19:26,168 INFO L87 Difference]: Start difference. First operand 103413 states and 124282 transitions. Second operand has 64 states, 64 states have (on average 5.859375) internal successors, (375), 64 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:20:23,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:20:23,095 INFO L93 Difference]: Finished difference Result 174562 states and 208000 transitions. [2023-12-19 00:20:23,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 181 states. [2023-12-19 00:20:23,096 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 5.859375) internal successors, (375), 64 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2023-12-19 00:20:23,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:20:23,234 INFO L225 Difference]: With dead ends: 174562 [2023-12-19 00:20:23,234 INFO L226 Difference]: Without dead ends: 124485 [2023-12-19 00:20:23,274 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 487 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 241 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18340 ImplicationChecksByTransitivity, 42.3s TimeCoverageRelationStatistics Valid=7464, Invalid=51342, Unknown=0, NotChecked=0, Total=58806 [2023-12-19 00:20:23,274 INFO L413 NwaCegarLoop]: 1509 mSDtfsCounter, 29587 mSDsluCounter, 41650 mSDsCounter, 0 mSdLazyCounter, 6900 mSolverCounterSat, 245 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29587 SdHoareTripleChecker+Valid, 43159 SdHoareTripleChecker+Invalid, 7145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 245 IncrementalHoareTripleChecker+Valid, 6900 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2023-12-19 00:20:23,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29587 Valid, 43159 Invalid, 7145 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [245 Valid, 6900 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2023-12-19 00:20:23,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124485 states. [2023-12-19 00:20:33,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124485 to 106283. [2023-12-19 00:20:33,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106283 states, 106281 states have (on average 1.2007978848524195) internal successors, (127622), 106282 states have internal predecessors, (127622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:20:33,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106283 states to 106283 states and 127622 transitions. [2023-12-19 00:20:33,711 INFO L78 Accepts]: Start accepts. Automaton has 106283 states and 127622 transitions. Word has length 138 [2023-12-19 00:20:33,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:20:33,712 INFO L495 AbstractCegarLoop]: Abstraction has 106283 states and 127622 transitions. [2023-12-19 00:20:33,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 5.859375) internal successors, (375), 64 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:20:33,712 INFO L276 IsEmpty]: Start isEmpty. Operand 106283 states and 127622 transitions. [2023-12-19 00:20:33,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-19 00:20:33,721 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:20:33,721 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:20:33,728 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-19 00:20:33,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:20:33,924 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:20:33,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:20:33,924 INFO L85 PathProgramCache]: Analyzing trace with hash -2045930824, now seen corresponding path program 1 times [2023-12-19 00:20:33,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:20:33,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317447141] [2023-12-19 00:20:33,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:20:33,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:20:33,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:20:35,549 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 13 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:20:35,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:20:35,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317447141] [2023-12-19 00:20:35,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317447141] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:20:35,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1114101542] [2023-12-19 00:20:35,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:20:35,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:20:35,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:20:35,550 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 00:20:35,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-19 00:20:35,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:20:35,681 INFO L262 TraceCheckSpWp]: Trace formula consists of 613 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-19 00:20:35,683 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:20:37,100 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 50 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:20:37,100 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:20:39,586 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 50 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:20:39,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1114101542] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:20:39,587 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:20:39,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 18, 17] total 62 [2023-12-19 00:20:39,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792914717] [2023-12-19 00:20:39,587 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:20:39,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2023-12-19 00:20:39,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:20:39,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2023-12-19 00:20:39,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=283, Invalid=3499, Unknown=0, NotChecked=0, Total=3782 [2023-12-19 00:20:39,589 INFO L87 Difference]: Start difference. First operand 106283 states and 127622 transitions. Second operand has 62 states, 62 states have (on average 6.145161290322581) internal successors, (381), 62 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:22:09,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:22:09,776 INFO L93 Difference]: Finished difference Result 374899 states and 446487 transitions. [2023-12-19 00:22:09,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 241 states. [2023-12-19 00:22:09,777 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 6.145161290322581) internal successors, (381), 62 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2023-12-19 00:22:09,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:22:10,319 INFO L225 Difference]: With dead ends: 374899 [2023-12-19 00:22:10,319 INFO L226 Difference]: Without dead ends: 313326 [2023-12-19 00:22:10,421 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 544 GetRequests, 245 SyntacticMatches, 0 SemanticMatches, 299 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31810 ImplicationChecksByTransitivity, 49.3s TimeCoverageRelationStatistics Valid=12121, Invalid=78179, Unknown=0, NotChecked=0, Total=90300 [2023-12-19 00:22:10,422 INFO L413 NwaCegarLoop]: 1582 mSDtfsCounter, 23408 mSDsluCounter, 46502 mSDsCounter, 0 mSdLazyCounter, 6284 mSolverCounterSat, 234 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23408 SdHoareTripleChecker+Valid, 48084 SdHoareTripleChecker+Invalid, 6518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 234 IncrementalHoareTripleChecker+Valid, 6284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2023-12-19 00:22:10,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23408 Valid, 48084 Invalid, 6518 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [234 Valid, 6284 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2023-12-19 00:22:10,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313326 states. [2023-12-19 00:22:39,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313326 to 235207. [2023-12-19 00:22:40,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235207 states, 235205 states have (on average 1.1958164154673583) internal successors, (281262), 235206 states have internal predecessors, (281262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:22:40,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235207 states to 235207 states and 281262 transitions. [2023-12-19 00:22:40,787 INFO L78 Accepts]: Start accepts. Automaton has 235207 states and 281262 transitions. Word has length 138 [2023-12-19 00:22:40,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:22:40,787 INFO L495 AbstractCegarLoop]: Abstraction has 235207 states and 281262 transitions. [2023-12-19 00:22:40,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 6.145161290322581) internal successors, (381), 62 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:22:40,788 INFO L276 IsEmpty]: Start isEmpty. Operand 235207 states and 281262 transitions. [2023-12-19 00:22:40,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-19 00:22:40,798 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:22:40,799 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:22:40,805 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-12-19 00:22:41,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-12-19 00:22:41,003 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:22:41,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:22:41,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1884809344, now seen corresponding path program 1 times [2023-12-19 00:22:41,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:22:41,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602242923] [2023-12-19 00:22:41,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:22:41,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:22:41,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:22:41,636 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 41 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:22:41,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:22:41,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602242923] [2023-12-19 00:22:41,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602242923] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:22:41,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1172046228] [2023-12-19 00:22:41,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:22:41,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:22:41,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:22:41,638 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 00:22:41,639 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-19 00:22:41,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:22:41,778 INFO L262 TraceCheckSpWp]: Trace formula consists of 612 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-19 00:22:41,780 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:22:42,608 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 65 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:22:42,609 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:22:43,351 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 65 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:22:43,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1172046228] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:22:43,352 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:22:43,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 11] total 29 [2023-12-19 00:22:43,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803209060] [2023-12-19 00:22:43,352 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:22:43,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-19 00:22:43,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:22:43,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-19 00:22:43,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=720, Unknown=0, NotChecked=0, Total=812 [2023-12-19 00:22:43,354 INFO L87 Difference]: Start difference. First operand 235207 states and 281262 transitions. Second operand has 29 states, 29 states have (on average 11.551724137931034) internal successors, (335), 29 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:23:20,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:23:20,711 INFO L93 Difference]: Finished difference Result 489114 states and 584342 transitions. [2023-12-19 00:23:20,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-12-19 00:23:20,719 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 11.551724137931034) internal successors, (335), 29 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2023-12-19 00:23:20,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:23:21,266 INFO L225 Difference]: With dead ends: 489114 [2023-12-19 00:23:21,266 INFO L226 Difference]: Without dead ends: 263530 [2023-12-19 00:23:21,356 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 272 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1030 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=913, Invalid=3779, Unknown=0, NotChecked=0, Total=4692 [2023-12-19 00:23:21,357 INFO L413 NwaCegarLoop]: 1524 mSDtfsCounter, 17654 mSDsluCounter, 6618 mSDsCounter, 0 mSdLazyCounter, 1223 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17654 SdHoareTripleChecker+Valid, 8142 SdHoareTripleChecker+Invalid, 1260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 00:23:21,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17654 Valid, 8142 Invalid, 1260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1223 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 00:23:21,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263530 states. [2023-12-19 00:23:40,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263530 to 141004. [2023-12-19 00:23:40,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141004 states, 141002 states have (on average 1.1951107076495369) internal successors, (168513), 141003 states have internal predecessors, (168513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:23:40,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141004 states to 141004 states and 168513 transitions. [2023-12-19 00:23:40,466 INFO L78 Accepts]: Start accepts. Automaton has 141004 states and 168513 transitions. Word has length 138 [2023-12-19 00:23:40,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:23:40,466 INFO L495 AbstractCegarLoop]: Abstraction has 141004 states and 168513 transitions. [2023-12-19 00:23:40,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 11.551724137931034) internal successors, (335), 29 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:23:40,467 INFO L276 IsEmpty]: Start isEmpty. Operand 141004 states and 168513 transitions. [2023-12-19 00:23:40,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-19 00:23:40,474 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:23:40,474 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:23:40,481 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-12-19 00:23:40,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-12-19 00:23:40,674 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:23:40,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:23:40,675 INFO L85 PathProgramCache]: Analyzing trace with hash -819679976, now seen corresponding path program 1 times [2023-12-19 00:23:40,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:23:40,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624808071] [2023-12-19 00:23:40,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:23:40,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:23:40,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:23:42,246 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 49 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:23:42,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:23:42,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624808071] [2023-12-19 00:23:42,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624808071] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:23:42,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1220069763] [2023-12-19 00:23:42,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:23:42,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:23:42,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:23:42,247 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 00:23:42,248 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-19 00:23:42,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:23:42,405 INFO L262 TraceCheckSpWp]: Trace formula consists of 615 conjuncts, 70 conjunts are in the unsatisfiable core [2023-12-19 00:23:42,408 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:23:51,318 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 40 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:23:51,318 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:24:01,659 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 40 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:24:01,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1220069763] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:24:01,659 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:24:01,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 42, 39] total 109 [2023-12-19 00:24:01,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516846238] [2023-12-19 00:24:01,660 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:24:01,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 109 states [2023-12-19 00:24:01,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:24:01,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2023-12-19 00:24:01,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=884, Invalid=10888, Unknown=0, NotChecked=0, Total=11772 [2023-12-19 00:24:01,661 INFO L87 Difference]: Start difference. First operand 141004 states and 168513 transitions. Second operand has 109 states, 109 states have (on average 3.403669724770642) internal successors, (371), 109 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2023-12-19 00:25:02,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2023-12-19 00:25:02,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 199 SyntacticMatches, 1 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7409 ImplicationChecksByTransitivity, 64.0s TimeCoverageRelationStatistics Valid=4169, Invalid=24901, Unknown=0, NotChecked=0, Total=29070 [2023-12-19 00:25:02,231 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 4191 mSDsluCounter, 4039 mSDsCounter, 0 mSdLazyCounter, 3301 mSolverCounterSat, 309 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4191 SdHoareTripleChecker+Valid, 4146 SdHoareTripleChecker+Invalid, 3610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 309 IncrementalHoareTripleChecker+Valid, 3301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2023-12-19 00:25:02,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4191 Valid, 4146 Invalid, 3610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [309 Valid, 3301 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2023-12-19 00:25:02,232 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-12-19 00:25:02,239 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-12-19 00:25:02,258 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-19 00:25:02,274 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-19 00:25:02,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-12-19 00:25:02,432 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (141004states) and FLOYD_HOARE automaton (currently 75 states, 109 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 171 known predicates. [2023-12-19 00:25:02,434 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-12-19 00:25:02,436 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:25:02,437 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-19 00:25:02,438 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.12 12:25:02 BoogieIcfgContainer [2023-12-19 00:25:02,439 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-19 00:25:02,439 INFO L158 Benchmark]: Toolchain (without parser) took 817949.90ms. Allocated memory was 182.5MB in the beginning and 5.6GB in the end (delta: 5.4GB). Free memory was 115.1MB in the beginning and 2.5GB in the end (delta: -2.4GB). Peak memory consumption was 3.0GB. Max. memory is 8.0GB. [2023-12-19 00:25:02,439 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 182.5MB. Free memory was 129.6MB in the beginning and 129.6MB in the end (delta: 71.0kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-19 00:25:02,439 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1229.12ms. Allocated memory was 182.5MB in the beginning and 263.2MB in the end (delta: 80.7MB). Free memory was 114.8MB in the beginning and 201.1MB in the end (delta: -86.3MB). Peak memory consumption was 145.5MB. Max. memory is 8.0GB. [2023-12-19 00:25:02,439 INFO L158 Benchmark]: Boogie Procedure Inliner took 301.92ms. Allocated memory is still 263.2MB. Free memory was 201.1MB in the beginning and 162.8MB in the end (delta: 38.2MB). Peak memory consumption was 115.3MB. Max. memory is 8.0GB. [2023-12-19 00:25:02,439 INFO L158 Benchmark]: Boogie Preprocessor took 400.19ms. Allocated memory was 263.2MB in the beginning and 480.2MB in the end (delta: 217.1MB). Free memory was 162.8MB in the beginning and 333.2MB in the end (delta: -170.4MB). Peak memory consumption was 62.9MB. Max. memory is 8.0GB. [2023-12-19 00:25:02,439 INFO L158 Benchmark]: RCFGBuilder took 2959.54ms. Allocated memory was 480.2MB in the beginning and 602.9MB in the end (delta: 122.7MB). Free memory was 332.7MB in the beginning and 286.1MB in the end (delta: 46.6MB). Peak memory consumption was 170.4MB. Max. memory is 8.0GB. [2023-12-19 00:25:02,439 INFO L158 Benchmark]: TraceAbstraction took 813048.18ms. Allocated memory was 602.9MB in the beginning and 5.6GB in the end (delta: 5.0GB). Free memory was 285.6MB in the beginning and 2.5GB in the end (delta: -2.2GB). Peak memory consumption was 2.8GB. Max. memory is 8.0GB. [2023-12-19 00:25:02,440 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 182.5MB. Free memory was 129.6MB in the beginning and 129.6MB in the end (delta: 71.0kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 1229.12ms. Allocated memory was 182.5MB in the beginning and 263.2MB in the end (delta: 80.7MB). Free memory was 114.8MB in the beginning and 201.1MB in the end (delta: -86.3MB). Peak memory consumption was 145.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 301.92ms. Allocated memory is still 263.2MB. Free memory was 201.1MB in the beginning and 162.8MB in the end (delta: 38.2MB). Peak memory consumption was 115.3MB. Max. memory is 8.0GB. * Boogie Preprocessor took 400.19ms. Allocated memory was 263.2MB in the beginning and 480.2MB in the end (delta: 217.1MB). Free memory was 162.8MB in the beginning and 333.2MB in the end (delta: -170.4MB). Peak memory consumption was 62.9MB. Max. memory is 8.0GB. * RCFGBuilder took 2959.54ms. Allocated memory was 480.2MB in the beginning and 602.9MB in the end (delta: 122.7MB). Free memory was 332.7MB in the beginning and 286.1MB in the end (delta: 46.6MB). Peak memory consumption was 170.4MB. Max. memory is 8.0GB. * TraceAbstraction took 813048.18ms. Allocated memory was 602.9MB in the beginning and 5.6GB in the end (delta: 5.0GB). Free memory was 285.6MB in the beginning and 2.5GB in the end (delta: -2.2GB). Peak memory consumption was 2.8GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 437]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 437). Cancelled while NwaCegarLoop was constructing difference of abstraction (141004states) and FLOYD_HOARE automaton (currently 75 states, 109 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 171 known predicates. - TimeoutResultAtElement [Line: 632]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 632). Cancelled while NwaCegarLoop was constructing difference of abstraction (141004states) and FLOYD_HOARE automaton (currently 75 states, 109 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 171 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 834 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 813.0s, OverallIterations: 40, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 634.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 373809 SdHoareTripleChecker+Valid, 57.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 373809 mSDsluCounter, 420130 SdHoareTripleChecker+Invalid, 51.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 360762 mSDsCounter, 4488 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 72161 IncrementalHoareTripleChecker+Invalid, 76649 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4488 mSolverCounterUnsat, 59368 mSDtfsCounter, 72161 mSolverCounterSat, 1.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6432 GetRequests, 3440 SyntacticMatches, 4 SemanticMatches, 2987 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 373249 ImplicationChecksByTransitivity, 456.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=235207occurred in iteration=38, InterpolantAutomatonStates: 2285, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 96.6s AutomataMinimizationTime, 39 MinimizatonAttempts, 600300 StatesRemovedByMinimization, 35 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.6s SatisfiabilityAnalysisTime, 74.9s InterpolantComputationTime, 5273 NumberOfCodeBlocks, 5273 NumberOfCodeBlocksAsserted, 57 NumberOfCheckSat, 7103 ConstructedInterpolants, 0 QuantifiedInterpolants, 148761 SizeOfPredicates, 149 NumberOfNonLiveVariables, 8875 ConjunctsInSsa, 438 ConjunctsInUnsatCore, 74 InterpolantComputations, 23 PerfectInterpolantSequences, 1392/3536 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