/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/loops/eureka_05.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 21:57:21,082 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 21:57:21,142 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 21:57:21,147 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 21:57:21,148 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 21:57:21,174 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 21:57:21,174 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 21:57:21,175 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 21:57:21,175 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 21:57:21,178 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 21:57:21,178 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 21:57:21,179 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 21:57:21,179 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 21:57:21,180 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 21:57:21,180 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 21:57:21,180 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 21:57:21,180 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 21:57:21,180 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 21:57:21,181 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 21:57:21,182 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 21:57:21,182 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 21:57:21,182 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 21:57:21,182 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 21:57:21,182 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 21:57:21,182 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 21:57:21,183 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 21:57:21,183 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 21:57:21,183 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 21:57:21,183 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 21:57:21,183 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 21:57:21,184 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 21:57:21,184 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 21:57:21,184 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 21:57:21,184 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 21:57:21,185 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 21:57:21,185 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 21:57:21,185 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 21:57:21,185 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 21:57:21,185 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 21:57:21,185 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 21:57:21,185 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 21:57:21,185 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 21:57:21,185 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 21:57:21,186 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 21:57:21,383 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 21:57:21,403 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 21:57:21,405 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 21:57:21,406 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 21:57:21,406 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 21:57:21,407 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/eureka_05.i [2023-12-15 21:57:22,542 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 21:57:22,691 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 21:57:22,692 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/eureka_05.i [2023-12-15 21:57:22,698 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36d7c17d5/5b8e67ebcfec431ba17aa2d10612ef68/FLAG832ffe167 [2023-12-15 21:57:22,711 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36d7c17d5/5b8e67ebcfec431ba17aa2d10612ef68 [2023-12-15 21:57:22,713 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 21:57:22,714 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 21:57:22,716 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 21:57:22,716 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 21:57:22,719 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 21:57:22,719 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 09:57:22" (1/1) ... [2023-12-15 21:57:22,720 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fcad751 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:57:22, skipping insertion in model container [2023-12-15 21:57:22,720 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 09:57:22" (1/1) ... [2023-12-15 21:57:22,744 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 21:57:22,861 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/eureka_05.i[810,823] [2023-12-15 21:57:22,876 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 21:57:22,884 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 21:57:22,894 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/eureka_05.i[810,823] [2023-12-15 21:57:22,909 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 21:57:22,920 INFO L206 MainTranslator]: Completed translation [2023-12-15 21:57:22,920 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:57:22 WrapperNode [2023-12-15 21:57:22,920 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 21:57:22,922 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 21:57:22,922 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 21:57:22,922 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 21:57:22,927 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:57:22" (1/1) ... [2023-12-15 21:57:22,940 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:57:22" (1/1) ... [2023-12-15 21:57:22,961 INFO L138 Inliner]: procedures = 16, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 82 [2023-12-15 21:57:22,962 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 21:57:22,962 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 21:57:22,963 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 21:57:22,963 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 21:57:22,970 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:57:22" (1/1) ... [2023-12-15 21:57:22,971 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:57:22" (1/1) ... [2023-12-15 21:57:22,974 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:57:22" (1/1) ... [2023-12-15 21:57:22,989 INFO L175 MemorySlicer]: Split 15 memory accesses to 3 slices as follows [2, 11, 2]. 73 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5, 0]. The 3 writes are split as follows [0, 2, 1]. [2023-12-15 21:57:22,989 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:57:22" (1/1) ... [2023-12-15 21:57:22,990 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:57:22" (1/1) ... [2023-12-15 21:57:22,998 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:57:22" (1/1) ... [2023-12-15 21:57:23,000 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:57:22" (1/1) ... [2023-12-15 21:57:23,001 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:57:22" (1/1) ... [2023-12-15 21:57:23,001 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:57:22" (1/1) ... [2023-12-15 21:57:23,002 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 21:57:23,003 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 21:57:23,003 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 21:57:23,003 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 21:57:23,004 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:57:22" (1/1) ... [2023-12-15 21:57:23,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 21:57:23,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:57:23,052 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) [2023-12-15 21:57:23,066 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 [2023-12-15 21:57:23,071 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 21:57:23,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 21:57:23,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-15 21:57:23,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-12-15 21:57:23,093 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-15 21:57:23,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-12-15 21:57:23,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-12-15 21:57:23,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-12-15 21:57:23,093 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 21:57:23,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 21:57:23,093 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-12-15 21:57:23,093 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-12-15 21:57:23,093 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-12-15 21:57:23,094 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-15 21:57:23,185 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 21:57:23,187 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 21:57:23,331 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 21:57:23,354 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 21:57:23,355 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-12-15 21:57:23,355 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 09:57:23 BoogieIcfgContainer [2023-12-15 21:57:23,355 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 21:57:23,357 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 21:57:23,357 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 21:57:23,359 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 21:57:23,359 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 09:57:22" (1/3) ... [2023-12-15 21:57:23,360 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@607e4839 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 09:57:23, skipping insertion in model container [2023-12-15 21:57:23,360 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:57:22" (2/3) ... [2023-12-15 21:57:23,361 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@607e4839 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 09:57:23, skipping insertion in model container [2023-12-15 21:57:23,361 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 09:57:23" (3/3) ... [2023-12-15 21:57:23,362 INFO L112 eAbstractionObserver]: Analyzing ICFG eureka_05.i [2023-12-15 21:57:23,374 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 21:57:23,374 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 21:57:23,408 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 21:57:23,413 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;@4c5da2c0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 21:57:23,413 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 21:57:23,415 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 15 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 21:57:23,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-12-15 21:57:23,419 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:57:23,419 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:57:23,420 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:57:23,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:57:23,424 INFO L85 PathProgramCache]: Analyzing trace with hash -831585943, now seen corresponding path program 1 times [2023-12-15 21:57:23,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:57:23,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889932290] [2023-12-15 21:57:23,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:57:23,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:57:23,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:57:23,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 21:57:23,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:57:23,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889932290] [2023-12-15 21:57:23,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889932290] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:57:23,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:57:23,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 21:57:23,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226831320] [2023-12-15 21:57:23,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:57:23,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 21:57:23,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:57:23,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 21:57:23,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:57:23,628 INFO L87 Difference]: Start difference. First operand has 16 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 15 states have internal predecessors, (25), 0 states have call successors, (0), 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 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 21:57:23,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:57:23,658 INFO L93 Difference]: Finished difference Result 31 states and 49 transitions. [2023-12-15 21:57:23,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 21:57:23,660 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 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 8 [2023-12-15 21:57:23,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:57:23,664 INFO L225 Difference]: With dead ends: 31 [2023-12-15 21:57:23,664 INFO L226 Difference]: Without dead ends: 15 [2023-12-15 21:57:23,666 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:57:23,670 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:57:23,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 26 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:57:23,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2023-12-15 21:57:23,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2023-12-15 21:57:23,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 14 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 21:57:23,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 19 transitions. [2023-12-15 21:57:23,689 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 19 transitions. Word has length 8 [2023-12-15 21:57:23,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:57:23,689 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 19 transitions. [2023-12-15 21:57:23,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 21:57:23,689 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 19 transitions. [2023-12-15 21:57:23,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-15 21:57:23,690 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:57:23,690 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:57:23,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-15 21:57:23,691 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:57:23,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:57:23,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1273734631, now seen corresponding path program 1 times [2023-12-15 21:57:23,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:57:23,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431008895] [2023-12-15 21:57:23,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:57:23,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:57:23,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:57:23,763 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 21:57:23,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:57:23,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431008895] [2023-12-15 21:57:23,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431008895] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 21:57:23,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1606683147] [2023-12-15 21:57:23,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:57:23,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:57:23,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:57:23,772 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) [2023-12-15 21:57:23,783 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 21:57:23,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:57:23,820 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 21:57:23,823 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:57:23,843 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 21:57:23,843 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:57:23,862 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 21:57:23,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1606683147] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:57:23,863 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 21:57:23,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-12-15 21:57:23,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164774638] [2023-12-15 21:57:23,863 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 21:57:23,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 21:57:23,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:57:23,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 21:57:23,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-15 21:57:23,864 INFO L87 Difference]: Start difference. First operand 15 states and 19 transitions. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 21:57:23,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:57:23,897 INFO L93 Difference]: Finished difference Result 35 states and 45 transitions. [2023-12-15 21:57:23,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 21:57:23,898 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 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 9 [2023-12-15 21:57:23,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:57:23,899 INFO L225 Difference]: With dead ends: 35 [2023-12-15 21:57:23,899 INFO L226 Difference]: Without dead ends: 23 [2023-12-15 21:57:23,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-15 21:57:23,900 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 8 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:57:23,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 39 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:57:23,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-12-15 21:57:23,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 18. [2023-12-15 21:57:23,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 17 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 21:57:23,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2023-12-15 21:57:23,910 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 9 [2023-12-15 21:57:23,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:57:23,910 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2023-12-15 21:57:23,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 21:57:23,911 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2023-12-15 21:57:23,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-12-15 21:57:23,911 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:57:23,912 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:57:23,917 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-15 21:57:24,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:57:24,118 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:57:24,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:57:24,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1185436311, now seen corresponding path program 2 times [2023-12-15 21:57:24,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:57:24,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834173489] [2023-12-15 21:57:24,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:57:24,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:57:24,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:57:24,189 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-15 21:57:24,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:57:24,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834173489] [2023-12-15 21:57:24,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834173489] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:57:24,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:57:24,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 21:57:24,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874020332] [2023-12-15 21:57:24,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:57:24,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 21:57:24,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:57:24,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 21:57:24,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 21:57:24,191 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 21:57:24,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:57:24,216 INFO L93 Difference]: Finished difference Result 29 states and 36 transitions. [2023-12-15 21:57:24,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 21:57:24,217 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 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 12 [2023-12-15 21:57:24,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:57:24,218 INFO L225 Difference]: With dead ends: 29 [2023-12-15 21:57:24,218 INFO L226 Difference]: Without dead ends: 23 [2023-12-15 21:57:24,218 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 [2023-12-15 21:57:24,220 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 21 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:57:24,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 18 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:57:24,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-12-15 21:57:24,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 19. [2023-12-15 21:57:24,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 21:57:24,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2023-12-15 21:57:24,227 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 12 [2023-12-15 21:57:24,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:57:24,227 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2023-12-15 21:57:24,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 21:57:24,227 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2023-12-15 21:57:24,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-15 21:57:24,228 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:57:24,228 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:57:24,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-15 21:57:24,228 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:57:24,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:57:24,229 INFO L85 PathProgramCache]: Analyzing trace with hash -1895147126, now seen corresponding path program 1 times [2023-12-15 21:57:24,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:57:24,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347333016] [2023-12-15 21:57:24,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:57:24,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:57:24,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:57:24,339 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-15 21:57:24,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:57:24,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347333016] [2023-12-15 21:57:24,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347333016] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:57:24,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:57:24,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 21:57:24,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570865330] [2023-12-15 21:57:24,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:57:24,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 21:57:24,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:57:24,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 21:57:24,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:57:24,341 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 21:57:24,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:57:24,384 INFO L93 Difference]: Finished difference Result 37 states and 48 transitions. [2023-12-15 21:57:24,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 21:57:24,385 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 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 15 [2023-12-15 21:57:24,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:57:24,385 INFO L225 Difference]: With dead ends: 37 [2023-12-15 21:57:24,385 INFO L226 Difference]: Without dead ends: 26 [2023-12-15 21:57:24,385 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-15 21:57:24,386 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 38 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:57:24,386 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 22 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:57:24,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-12-15 21:57:24,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 20. [2023-12-15 21:57:24,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 21:57:24,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2023-12-15 21:57:24,389 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 15 [2023-12-15 21:57:24,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:57:24,389 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2023-12-15 21:57:24,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 21:57:24,390 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2023-12-15 21:57:24,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-15 21:57:24,390 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:57:24,390 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:57:24,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-15 21:57:24,390 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:57:24,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:57:24,391 INFO L85 PathProgramCache]: Analyzing trace with hash 71753960, now seen corresponding path program 1 times [2023-12-15 21:57:24,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:57:24,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823454181] [2023-12-15 21:57:24,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:57:24,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:57:24,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:57:24,440 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-15 21:57:24,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:57:24,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823454181] [2023-12-15 21:57:24,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823454181] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 21:57:24,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [370095279] [2023-12-15 21:57:24,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:57:24,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:57:24,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:57:24,458 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) [2023-12-15 21:57:24,487 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 21:57:24,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:57:24,510 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 21:57:24,511 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:57:24,551 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-15 21:57:24,552 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:57:24,587 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-15 21:57:24,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [370095279] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:57:24,587 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 21:57:24,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 6] total 9 [2023-12-15 21:57:24,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834654597] [2023-12-15 21:57:24,588 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 21:57:24,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-15 21:57:24,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:57:24,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-15 21:57:24,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-12-15 21:57:24,591 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand has 10 states, 10 states have (on average 2.9) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 21:57:24,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:57:24,696 INFO L93 Difference]: Finished difference Result 64 states and 77 transitions. [2023-12-15 21:57:24,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-15 21:57:24,696 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.9) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 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 18 [2023-12-15 21:57:24,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:57:24,697 INFO L225 Difference]: With dead ends: 64 [2023-12-15 21:57:24,697 INFO L226 Difference]: Without dead ends: 50 [2023-12-15 21:57:24,698 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 26 SyntacticMatches, 4 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2023-12-15 21:57:24,698 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 51 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:57:24,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 89 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:57:24,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2023-12-15 21:57:24,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 26. [2023-12-15 21:57:24,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.28) internal successors, (32), 25 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 21:57:24,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2023-12-15 21:57:24,710 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 18 [2023-12-15 21:57:24,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:57:24,710 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2023-12-15 21:57:24,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.9) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 21:57:24,712 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2023-12-15 21:57:24,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-15 21:57:24,715 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:57:24,718 INFO L195 NwaCegarLoop]: trace histogram [5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:57:24,736 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-15 21:57:24,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:57:24,924 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:57:24,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:57:24,927 INFO L85 PathProgramCache]: Analyzing trace with hash 1969768187, now seen corresponding path program 2 times [2023-12-15 21:57:24,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:57:24,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234378178] [2023-12-15 21:57:24,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:57:24,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:57:24,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:57:25,032 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-15 21:57:25,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:57:25,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234378178] [2023-12-15 21:57:25,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234378178] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 21:57:25,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1854170540] [2023-12-15 21:57:25,032 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-15 21:57:25,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:57:25,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:57:25,048 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) [2023-12-15 21:57:25,069 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-15 21:57:25,143 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-15 21:57:25,143 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-15 21:57:25,144 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-15 21:57:25,145 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:57:25,226 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-12-15 21:57:25,226 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:57:25,282 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-12-15 21:57:25,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1854170540] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:57:25,282 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 21:57:25,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2023-12-15 21:57:25,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740125441] [2023-12-15 21:57:25,283 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 21:57:25,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-15 21:57:25,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:57:25,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-15 21:57:25,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-12-15 21:57:25,284 INFO L87 Difference]: Start difference. First operand 26 states and 32 transitions. Second operand has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 12 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 21:57:25,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:57:25,435 INFO L93 Difference]: Finished difference Result 68 states and 96 transitions. [2023-12-15 21:57:25,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-15 21:57:25,435 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 12 states have internal predecessors, (35), 0 states have call successors, (0), 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 22 [2023-12-15 21:57:25,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:57:25,436 INFO L225 Difference]: With dead ends: 68 [2023-12-15 21:57:25,436 INFO L226 Difference]: Without dead ends: 55 [2023-12-15 21:57:25,436 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=208, Invalid=392, Unknown=0, NotChecked=0, Total=600 [2023-12-15 21:57:25,437 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 128 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:57:25,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 30 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:57:25,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2023-12-15 21:57:25,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 51. [2023-12-15 21:57:25,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.3) internal successors, (65), 50 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 21:57:25,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 65 transitions. [2023-12-15 21:57:25,442 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 65 transitions. Word has length 22 [2023-12-15 21:57:25,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:57:25,443 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 65 transitions. [2023-12-15 21:57:25,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 12 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 21:57:25,443 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 65 transitions. [2023-12-15 21:57:25,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-12-15 21:57:25,443 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:57:25,444 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:57:25,460 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-15 21:57:25,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:57:25,660 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:57:25,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:57:25,661 INFO L85 PathProgramCache]: Analyzing trace with hash 2011435034, now seen corresponding path program 3 times [2023-12-15 21:57:25,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:57:25,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316244952] [2023-12-15 21:57:25,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:57:25,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:57:25,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:57:25,791 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-12-15 21:57:25,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:57:25,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316244952] [2023-12-15 21:57:25,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316244952] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 21:57:25,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1766950174] [2023-12-15 21:57:25,791 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-15 21:57:25,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:57:25,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:57:25,792 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) [2023-12-15 21:57:25,864 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-15 21:57:25,917 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-15 21:57:25,917 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-15 21:57:25,918 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-15 21:57:25,920 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:57:25,943 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-12-15 21:57:26,045 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2023-12-15 21:57:26,045 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:57:26,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1766950174] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:57:26,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 21:57:26,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 11 [2023-12-15 21:57:26,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516352897] [2023-12-15 21:57:26,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:57:26,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 21:57:26,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:57:26,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 21:57:26,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-12-15 21:57:26,047 INFO L87 Difference]: Start difference. First operand 51 states and 65 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 21:57:26,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:57:26,090 INFO L93 Difference]: Finished difference Result 56 states and 70 transitions. [2023-12-15 21:57:26,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 21:57:26,090 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 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 49 [2023-12-15 21:57:26,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:57:26,091 INFO L225 Difference]: With dead ends: 56 [2023-12-15 21:57:26,091 INFO L226 Difference]: Without dead ends: 54 [2023-12-15 21:57:26,091 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2023-12-15 21:57:26,092 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 26 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:57:26,092 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 32 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:57:26,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2023-12-15 21:57:26,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2023-12-15 21:57:26,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 1.2884615384615385) internal successors, (67), 52 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 21:57:26,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 67 transitions. [2023-12-15 21:57:26,102 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 67 transitions. Word has length 49 [2023-12-15 21:57:26,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:57:26,102 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 67 transitions. [2023-12-15 21:57:26,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 21:57:26,102 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 67 transitions. [2023-12-15 21:57:26,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-15 21:57:26,103 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:57:26,103 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:57:26,118 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-15 21:57:26,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:57:26,308 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:57:26,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:57:26,309 INFO L85 PathProgramCache]: Analyzing trace with hash -717345774, now seen corresponding path program 1 times [2023-12-15 21:57:26,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:57:26,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130249830] [2023-12-15 21:57:26,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:57:26,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:57:26,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:57:26,399 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-15 21:57:26,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:57:26,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130249830] [2023-12-15 21:57:26,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130249830] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 21:57:26,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265229427] [2023-12-15 21:57:26,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:57:26,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:57:26,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:57:26,416 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) [2023-12-15 21:57:26,420 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-15 21:57:26,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:57:26,490 INFO L262 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 21:57:26,491 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:57:26,615 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-15 21:57:26,615 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:57:26,678 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-15 21:57:26,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1265229427] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:57:26,678 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 21:57:26,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-12-15 21:57:26,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188231017] [2023-12-15 21:57:26,678 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 21:57:26,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-15 21:57:26,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:57:26,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-15 21:57:26,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=89, Unknown=0, NotChecked=0, Total=156 [2023-12-15 21:57:26,680 INFO L87 Difference]: Start difference. First operand 53 states and 67 transitions. Second operand has 13 states, 13 states have (on average 4.615384615384615) internal successors, (60), 12 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 21:57:26,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:57:26,733 INFO L93 Difference]: Finished difference Result 71 states and 91 transitions. [2023-12-15 21:57:26,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-15 21:57:26,734 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.615384615384615) internal successors, (60), 12 states have internal predecessors, (60), 0 states have call successors, (0), 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 52 [2023-12-15 21:57:26,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:57:26,735 INFO L225 Difference]: With dead ends: 71 [2023-12-15 21:57:26,735 INFO L226 Difference]: Without dead ends: 63 [2023-12-15 21:57:26,735 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 94 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=105, Unknown=0, NotChecked=0, Total=182 [2023-12-15 21:57:26,735 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 45 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:57:26,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 50 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:57:26,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2023-12-15 21:57:26,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2023-12-15 21:57:26,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.3064516129032258) internal successors, (81), 62 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 21:57:26,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 81 transitions. [2023-12-15 21:57:26,744 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 81 transitions. Word has length 52 [2023-12-15 21:57:26,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:57:26,744 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 81 transitions. [2023-12-15 21:57:26,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.615384615384615) internal successors, (60), 12 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 21:57:26,744 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 81 transitions. [2023-12-15 21:57:26,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-15 21:57:26,745 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:57:26,745 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:57:26,766 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-15 21:57:26,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:57:26,967 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:57:26,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:57:26,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1920110706, now seen corresponding path program 2 times [2023-12-15 21:57:26,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:57:26,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889927506] [2023-12-15 21:57:26,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:57:26,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:57:26,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:57:27,055 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 27 proven. 120 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2023-12-15 21:57:27,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:57:27,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889927506] [2023-12-15 21:57:27,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889927506] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 21:57:27,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1368141965] [2023-12-15 21:57:27,056 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-15 21:57:27,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:57:27,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:57:27,057 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) [2023-12-15 21:57:27,081 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-15 21:57:27,135 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-15 21:57:27,136 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-15 21:57:27,137 INFO L262 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-15 21:57:27,138 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:57:27,245 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 27 proven. 120 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2023-12-15 21:57:27,246 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:57:27,306 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 27 proven. 120 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2023-12-15 21:57:27,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1368141965] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:57:27,306 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 21:57:27,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2023-12-15 21:57:27,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983144228] [2023-12-15 21:57:27,307 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 21:57:27,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-15 21:57:27,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:57:27,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-15 21:57:27,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2023-12-15 21:57:27,308 INFO L87 Difference]: Start difference. First operand 63 states and 81 transitions. Second operand has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 13 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 21:57:27,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:57:27,416 INFO L93 Difference]: Finished difference Result 81 states and 104 transitions. [2023-12-15 21:57:27,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-15 21:57:27,417 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 13 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-15 21:57:27,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:57:27,417 INFO L225 Difference]: With dead ends: 81 [2023-12-15 21:57:27,417 INFO L226 Difference]: Without dead ends: 66 [2023-12-15 21:57:27,417 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 104 SyntacticMatches, 5 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=175, Invalid=331, Unknown=0, NotChecked=0, Total=506 [2023-12-15 21:57:27,418 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 75 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:57:27,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 40 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:57:27,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2023-12-15 21:57:27,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 64. [2023-12-15 21:57:27,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.3015873015873016) internal successors, (82), 63 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 21:57:27,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 82 transitions. [2023-12-15 21:57:27,426 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 82 transitions. Word has length 58 [2023-12-15 21:57:27,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:57:27,426 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 82 transitions. [2023-12-15 21:57:27,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 13 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 21:57:27,426 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 82 transitions. [2023-12-15 21:57:27,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-15 21:57:27,427 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:57:27,427 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:57:27,448 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-15 21:57:27,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:57:27,632 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:57:27,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:57:27,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1527735826, now seen corresponding path program 3 times [2023-12-15 21:57:27,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:57:27,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054303122] [2023-12-15 21:57:27,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:57:27,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:57:27,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:57:28,136 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 1 proven. 21 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2023-12-15 21:57:28,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:57:28,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054303122] [2023-12-15 21:57:28,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054303122] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 21:57:28,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [535797854] [2023-12-15 21:57:28,136 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-15 21:57:28,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:57:28,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:57:28,143 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) [2023-12-15 21:57:28,146 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-15 21:57:28,209 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-12-15 21:57:28,210 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-15 21:57:28,210 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-15 21:57:28,213 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:57:28,215 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2023-12-15 21:57:28,231 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 29 [2023-12-15 21:57:28,475 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2023-12-15 21:57:28,475 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:57:28,713 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2023-12-15 21:57:28,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [535797854] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:57:28,714 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 21:57:28,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 10] total 25 [2023-12-15 21:57:28,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97987951] [2023-12-15 21:57:28,715 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 21:57:28,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-15 21:57:28,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:57:28,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-15 21:57:28,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=489, Unknown=0, NotChecked=0, Total=600 [2023-12-15 21:57:28,717 INFO L87 Difference]: Start difference. First operand 64 states and 82 transitions. Second operand has 25 states, 25 states have (on average 2.32) internal successors, (58), 25 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 21:57:29,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:57:29,404 INFO L93 Difference]: Finished difference Result 85 states and 103 transitions. [2023-12-15 21:57:29,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-15 21:57:29,405 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.32) internal successors, (58), 25 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2023-12-15 21:57:29,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:57:29,405 INFO L225 Difference]: With dead ends: 85 [2023-12-15 21:57:29,405 INFO L226 Difference]: Without dead ends: 83 [2023-12-15 21:57:29,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 395 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=407, Invalid=1663, Unknown=0, NotChecked=0, Total=2070 [2023-12-15 21:57:29,407 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 160 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 21:57:29,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 167 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 21:57:29,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2023-12-15 21:57:29,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 67. [2023-12-15 21:57:29,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.2878787878787878) internal successors, (85), 66 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 21:57:29,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 85 transitions. [2023-12-15 21:57:29,418 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 85 transitions. Word has length 61 [2023-12-15 21:57:29,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:57:29,419 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 85 transitions. [2023-12-15 21:57:29,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.32) internal successors, (58), 25 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 21:57:29,419 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 85 transitions. [2023-12-15 21:57:29,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-15 21:57:29,419 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:57:29,419 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:57:29,426 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-15 21:57:29,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:57:29,626 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:57:29,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:57:29,627 INFO L85 PathProgramCache]: Analyzing trace with hash -985173222, now seen corresponding path program 4 times [2023-12-15 21:57:29,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:57:29,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784062830] [2023-12-15 21:57:29,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:57:29,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:57:29,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:57:30,356 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2023-12-15 21:57:30,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:57:30,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784062830] [2023-12-15 21:57:30,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784062830] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 21:57:30,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1866475403] [2023-12-15 21:57:30,356 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-15 21:57:30,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:57:30,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:57:30,367 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) [2023-12-15 21:57:30,415 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-15 21:57:30,478 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-15 21:57:30,478 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-15 21:57:30,480 INFO L262 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 46 conjunts are in the unsatisfiable core [2023-12-15 21:57:30,483 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:57:30,828 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:57:30,829 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 80 treesize of output 47 [2023-12-15 21:57:30,966 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:57:30,966 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 17 [2023-12-15 21:57:30,988 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 84 proven. 122 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-12-15 21:57:30,988 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:57:31,643 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 126 treesize of output 108 [2023-12-15 21:57:31,734 INFO L349 Elim1Store]: treesize reduction 10, result has 90.5 percent of original size [2023-12-15 21:57:31,735 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 120 treesize of output 155 [2023-12-15 21:57:32,361 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 158 proven. 26 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2023-12-15 21:57:32,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1866475403] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:57:32,362 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 21:57:32,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 20, 15] total 44 [2023-12-15 21:57:32,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482351292] [2023-12-15 21:57:32,362 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 21:57:32,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-12-15 21:57:32,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:57:32,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-12-15 21:57:32,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=1754, Unknown=0, NotChecked=0, Total=1892 [2023-12-15 21:57:32,364 INFO L87 Difference]: Start difference. First operand 67 states and 85 transitions. Second operand has 44 states, 44 states have (on average 2.272727272727273) internal successors, (100), 44 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 21:57:41,705 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-15 21:57:48,095 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-15 21:57:52,108 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] Received shutdown request... [2023-12-15 21:58:39,342 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 21:58:39,342 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 [2023-12-15 21:58:40,359 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-15 21:58:40,547 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forcibly destroying the process [2023-12-15 21:58:40,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-12-15 21:58:40,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1100 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=651, Invalid=5354, Unknown=1, NotChecked=0, Total=6006 [2023-12-15 21:58:40,555 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 179 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 993 mSolverCounterSat, 28 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 1024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 993 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.7s IncrementalHoareTripleChecker+Time [2023-12-15 21:58:40,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 80 Invalid, 1024 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 993 Invalid, 3 Unknown, 0 Unchecked, 12.7s Time] [2023-12-15 21:58:40,556 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 21:58:40,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-15 21:58:40,557 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (67states) and FLOYD_HOARE automaton (currently 37 states, 44 states before enhancement),while executing Executor. [2023-12-15 21:58:40,560 INFO L445 BasicCegarLoop]: Path program histogram: [4, 3, 2, 1, 1] [2023-12-15 21:58:40,561 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 21:58:40,562 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 09:58:40 BoogieIcfgContainer [2023-12-15 21:58:40,562 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 21:58:40,562 INFO L158 Benchmark]: Toolchain (without parser) took 77849.01ms. Allocated memory was 283.1MB in the beginning and 407.9MB in the end (delta: 124.8MB). Free memory was 232.4MB in the beginning and 155.0MB in the end (delta: 77.4MB). Peak memory consumption was 201.9MB. Max. memory is 8.0GB. [2023-12-15 21:58:40,563 INFO L158 Benchmark]: CDTParser took 0.98ms. Allocated memory is still 219.2MB. Free memory is still 171.1MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 21:58:40,563 INFO L158 Benchmark]: CACSL2BoogieTranslator took 204.93ms. Allocated memory is still 283.1MB. Free memory was 232.0MB in the beginning and 220.8MB in the end (delta: 11.2MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-15 21:58:40,563 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.96ms. Allocated memory is still 283.1MB. Free memory was 220.8MB in the beginning and 219.3MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-15 21:58:40,563 INFO L158 Benchmark]: Boogie Preprocessor took 40.07ms. Allocated memory is still 283.1MB. Free memory was 219.3MB in the beginning and 217.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-15 21:58:40,563 INFO L158 Benchmark]: RCFGBuilder took 352.39ms. Allocated memory is still 283.1MB. Free memory was 217.1MB in the beginning and 204.5MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-12-15 21:58:40,563 INFO L158 Benchmark]: TraceAbstraction took 77205.26ms. Allocated memory was 283.1MB in the beginning and 407.9MB in the end (delta: 124.8MB). Free memory was 203.7MB in the beginning and 155.0MB in the end (delta: 48.8MB). Peak memory consumption was 173.6MB. Max. memory is 8.0GB. [2023-12-15 21:58:40,564 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.98ms. Allocated memory is still 219.2MB. Free memory is still 171.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 204.93ms. Allocated memory is still 283.1MB. Free memory was 232.0MB in the beginning and 220.8MB in the end (delta: 11.2MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 39.96ms. Allocated memory is still 283.1MB. Free memory was 220.8MB in the beginning and 219.3MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 40.07ms. Allocated memory is still 283.1MB. Free memory was 219.3MB in the beginning and 217.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 352.39ms. Allocated memory is still 283.1MB. Free memory was 217.1MB in the beginning and 204.5MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 77205.26ms. Allocated memory was 283.1MB in the beginning and 407.9MB in the end (delta: 124.8MB). Free memory was 203.7MB in the beginning and 155.0MB in the end (delta: 48.8MB). Peak memory consumption was 173.6MB. 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: 16]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 16). Cancelled while NwaCegarLoop was constructing difference of abstraction (67states) and FLOYD_HOARE automaton (currently 37 states, 44 states before enhancement),while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 77.2s, OverallIterations: 11, TraceHistogramMax: 10, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 69.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 3 mSolverCounterUnknown, 731 SdHoareTripleChecker+Valid, 13.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 731 mSDsluCounter, 593 SdHoareTripleChecker+Invalid, 12.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 463 mSDsCounter, 76 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1640 IncrementalHoareTripleChecker+Invalid, 1719 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 76 mSolverCounterUnsat, 130 mSDtfsCounter, 1640 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 763 GetRequests, 538 SyntacticMatches, 12 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1940 ImplicationChecksByTransitivity, 9.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=67occurred in iteration=10, InterpolantAutomatonStates: 98, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 62 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 5.0s InterpolantComputationTime, 701 NumberOfCodeBlocks, 627 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 959 ConstructedInterpolants, 12 QuantifiedInterpolants, 7879 SizeOfPredicates, 41 NumberOfNonLiveVariables, 1368 ConjunctsInSsa, 118 ConjunctsInUnsatCore, 26 InterpolantComputations, 4 PerfectInterpolantSequences, 1971/2994 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 [2023-12-15 21:58:40,578 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 137 [2023-12-15 21:58:40,579 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forcibly destroying the process