/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/recursified_loop-simple/recursified_nested_1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 23:02:32,844 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 23:02:32,941 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 23:02:32,945 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 23:02:32,945 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 23:02:32,960 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 23:02:32,961 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 23:02:32,961 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 23:02:32,962 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 23:02:32,962 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 23:02:32,963 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 23:02:32,963 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 23:02:32,963 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 23:02:32,964 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 23:02:32,964 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 23:02:32,964 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 23:02:32,965 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 23:02:32,965 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 23:02:32,965 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 23:02:32,966 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 23:02:32,966 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 23:02:32,967 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 23:02:32,967 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 23:02:32,967 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 23:02:32,968 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 23:02:32,968 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 23:02:32,968 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 23:02:32,969 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 23:02:32,969 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 23:02:32,969 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 23:02:32,970 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 23:02:32,970 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 23:02:32,970 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 23:02:32,971 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 23:02:32,971 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 23:02:32,971 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 23:02:32,971 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 23:02:32,972 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 23:02:32,972 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 23:02:32,972 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 23:02:32,973 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 23:02:32,973 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 23:02:32,973 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 23:02:32,974 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 23:02:33,208 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 23:02:33,230 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 23:02:33,232 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 23:02:33,234 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 23:02:33,234 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 23:02:33,235 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursified_loop-simple/recursified_nested_1.c [2023-12-15 23:02:34,386 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 23:02:34,567 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 23:02:34,568 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursified_loop-simple/recursified_nested_1.c [2023-12-15 23:02:34,573 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8600c7ed9/f05fc5feb2644625a8e487ac4d2a0562/FLAG269c98e4d [2023-12-15 23:02:34,584 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8600c7ed9/f05fc5feb2644625a8e487ac4d2a0562 [2023-12-15 23:02:34,586 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 23:02:34,588 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 23:02:34,588 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 23:02:34,589 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 23:02:34,597 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 23:02:34,598 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:02:34" (1/1) ... [2023-12-15 23:02:34,598 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7442caca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:02:34, skipping insertion in model container [2023-12-15 23:02:34,599 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:02:34" (1/1) ... [2023-12-15 23:02:34,613 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 23:02:34,720 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursified_loop-simple/recursified_nested_1.c[1277,1290] [2023-12-15 23:02:34,723 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 23:02:34,731 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 23:02:34,740 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursified_loop-simple/recursified_nested_1.c[1277,1290] [2023-12-15 23:02:34,741 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 23:02:34,751 INFO L206 MainTranslator]: Completed translation [2023-12-15 23:02:34,752 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:02:34 WrapperNode [2023-12-15 23:02:34,752 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 23:02:34,753 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 23:02:34,753 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 23:02:34,753 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 23:02:34,759 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:02:34" (1/1) ... [2023-12-15 23:02:34,763 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:02:34" (1/1) ... [2023-12-15 23:02:34,776 INFO L138 Inliner]: procedures = 12, calls = 18, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 24 [2023-12-15 23:02:34,776 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 23:02:34,777 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 23:02:34,777 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 23:02:34,777 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 23:02:34,785 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:02:34" (1/1) ... [2023-12-15 23:02:34,785 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:02:34" (1/1) ... [2023-12-15 23:02:34,787 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:02:34" (1/1) ... [2023-12-15 23:02:34,796 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [2, 6]. 75 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1]. The 2 writes are split as follows [0, 2]. [2023-12-15 23:02:34,796 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:02:34" (1/1) ... [2023-12-15 23:02:34,796 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:02:34" (1/1) ... [2023-12-15 23:02:34,799 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:02:34" (1/1) ... [2023-12-15 23:02:34,800 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:02:34" (1/1) ... [2023-12-15 23:02:34,801 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:02:34" (1/1) ... [2023-12-15 23:02:34,802 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:02:34" (1/1) ... [2023-12-15 23:02:34,804 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 23:02:34,804 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 23:02:34,804 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 23:02:34,805 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 23:02:34,805 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:02:34" (1/1) ... [2023-12-15 23:02:34,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 23:02:34,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 23:02:34,841 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 23:02:34,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-12-15 23:02:34,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-12-15 23:02:34,880 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 23:02:34,880 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_19_to_19_0 [2023-12-15 23:02:34,880 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 23:02:34,883 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_19_to_19_0 [2023-12-15 23:02:34,883 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 23:02:34,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 23:02:34,885 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-12-15 23:02:34,885 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-12-15 23:02:34,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 23:02:34,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-15 23:02:34,886 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-15 23:02:34,886 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-15 23:02:34,952 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 23:02:34,956 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 23:02:35,053 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 23:02:35,077 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 23:02:35,077 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-15 23:02:35,077 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:02:35 BoogieIcfgContainer [2023-12-15 23:02:35,078 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 23:02:35,081 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 23:02:35,082 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 23:02:35,085 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 23:02:35,085 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 11:02:34" (1/3) ... [2023-12-15 23:02:35,086 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b9f8a73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:02:35, skipping insertion in model container [2023-12-15 23:02:35,086 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:02:34" (2/3) ... [2023-12-15 23:02:35,086 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b9f8a73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:02:35, skipping insertion in model container [2023-12-15 23:02:35,087 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:02:35" (3/3) ... [2023-12-15 23:02:35,089 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_nested_1.c [2023-12-15 23:02:35,103 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 23:02:35,103 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 23:02:35,149 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 23:02:35,154 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;@5b60e7a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 23:02:35,154 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 23:02:35,157 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 8 states have (on average 1.375) internal successors, (11), 10 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-15 23:02:35,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-15 23:02:35,167 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:02:35,167 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:02:35,168 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:02:35,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:02:35,172 INFO L85 PathProgramCache]: Analyzing trace with hash -1146450700, now seen corresponding path program 1 times [2023-12-15 23:02:35,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:02:35,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914802534] [2023-12-15 23:02:35,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:02:35,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:02:35,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:02:35,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 23:02:35,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:02:35,604 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 23:02:35,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:02:35,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914802534] [2023-12-15 23:02:35,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914802534] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:02:35,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:02:35,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 23:02:35,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286339536] [2023-12-15 23:02:35,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:02:35,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 23:02:35,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:02:35,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 23:02:35,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-15 23:02:35,645 INFO L87 Difference]: Start difference. First operand has 13 states, 8 states have (on average 1.375) internal successors, (11), 10 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-15 23:02:35,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:02:35,758 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2023-12-15 23:02:35,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 23:02:35,760 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2023-12-15 23:02:35,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:02:35,766 INFO L225 Difference]: With dead ends: 21 [2023-12-15 23:02:35,767 INFO L226 Difference]: Without dead ends: 13 [2023-12-15 23:02:35,769 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-15 23:02:35,773 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 3 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 23:02:35,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 30 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 23:02:35,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2023-12-15 23:02:35,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2023-12-15 23:02:35,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 8 states have (on average 1.125) internal successors, (9), 9 states have internal predecessors, (9), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-15 23:02:35,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2023-12-15 23:02:35,812 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2023-12-15 23:02:35,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:02:35,813 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2023-12-15 23:02:35,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-15 23:02:35,814 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2023-12-15 23:02:35,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-12-15 23:02:35,815 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:02:35,815 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:02:35,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-15 23:02:35,816 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:02:35,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:02:35,818 INFO L85 PathProgramCache]: Analyzing trace with hash -1151650808, now seen corresponding path program 1 times [2023-12-15 23:02:35,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:02:35,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393384560] [2023-12-15 23:02:35,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:02:35,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:02:35,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:02:36,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 23:02:36,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:02:36,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 23:02:36,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:02:36,312 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-15 23:02:36,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:02:36,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393384560] [2023-12-15 23:02:36,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393384560] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 23:02:36,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [897059013] [2023-12-15 23:02:36,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:02:36,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 23:02:36,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 23:02:36,317 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 23:02:36,321 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 23:02:36,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:02:36,416 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-15 23:02:36,422 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 23:02:36,471 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 1 [2023-12-15 23:02:36,669 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-15 23:02:36,670 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 23:02:37,029 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:02:37,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [897059013] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 23:02:37,032 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 23:02:37,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9] total 21 [2023-12-15 23:02:37,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483516138] [2023-12-15 23:02:37,033 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 23:02:37,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-15 23:02:37,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:02:37,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-15 23:02:37,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=374, Unknown=0, NotChecked=0, Total=462 [2023-12-15 23:02:37,039 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand has 22 states, 16 states have (on average 1.4375) internal successors, (23), 18 states have internal predecessors, (23), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 4 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-15 23:02:37,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:02:37,206 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2023-12-15 23:02:37,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 23:02:37,207 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 16 states have (on average 1.4375) internal successors, (23), 18 states have internal predecessors, (23), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 4 states have call predecessors, (6), 6 states have call successors, (6) Word has length 14 [2023-12-15 23:02:37,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:02:37,207 INFO L225 Difference]: With dead ends: 21 [2023-12-15 23:02:37,208 INFO L226 Difference]: Without dead ends: 17 [2023-12-15 23:02:37,208 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=137, Invalid=565, Unknown=0, NotChecked=0, Total=702 [2023-12-15 23:02:37,209 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 7 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 23:02:37,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 59 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 23:02:37,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2023-12-15 23:02:37,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2023-12-15 23:02:37,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 10 states have (on average 1.1) internal successors, (11), 11 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 23:02:37,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2023-12-15 23:02:37,214 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 14 [2023-12-15 23:02:37,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:02:37,215 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2023-12-15 23:02:37,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 16 states have (on average 1.4375) internal successors, (23), 18 states have internal predecessors, (23), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 4 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-15 23:02:37,215 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2023-12-15 23:02:37,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-12-15 23:02:37,216 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:02:37,216 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:02:37,222 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-15 23:02:37,422 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 23:02:37,422 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:02:37,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:02:37,423 INFO L85 PathProgramCache]: Analyzing trace with hash 1489619010, now seen corresponding path program 2 times [2023-12-15 23:02:37,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:02:37,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797832500] [2023-12-15 23:02:37,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:02:37,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:02:37,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:02:37,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 23:02:37,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:02:37,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 23:02:37,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:02:38,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 23:02:38,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:02:38,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 23:02:38,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:02:38,149 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-15 23:02:38,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:02:38,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797832500] [2023-12-15 23:02:38,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797832500] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 23:02:38,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [155392141] [2023-12-15 23:02:38,151 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-15 23:02:38,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 23:02:38,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 23:02:38,153 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 23:02:38,174 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 23:02:38,208 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-15 23:02:38,208 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-15 23:02:38,209 INFO L262 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 53 conjunts are in the unsatisfiable core [2023-12-15 23:02:38,212 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 23:02:38,219 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 1 [2023-12-15 23:02:38,437 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-15 23:02:38,437 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 23:02:39,361 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:02:39,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [155392141] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 23:02:39,362 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 23:02:39,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 17] total 32 [2023-12-15 23:02:39,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668799047] [2023-12-15 23:02:39,362 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 23:02:39,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-15 23:02:39,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:02:39,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-15 23:02:39,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=862, Unknown=0, NotChecked=0, Total=1056 [2023-12-15 23:02:39,364 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand has 33 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 27 states have internal predecessors, (32), 9 states have call successors, (9), 5 states have call predecessors, (9), 9 states have return successors, (12), 8 states have call predecessors, (12), 9 states have call successors, (12) [2023-12-15 23:02:39,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:02:39,601 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2023-12-15 23:02:39,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-15 23:02:39,605 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 27 states have internal predecessors, (32), 9 states have call successors, (9), 5 states have call predecessors, (9), 9 states have return successors, (12), 8 states have call predecessors, (12), 9 states have call successors, (12) Word has length 24 [2023-12-15 23:02:39,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:02:39,605 INFO L225 Difference]: With dead ends: 25 [2023-12-15 23:02:39,605 INFO L226 Difference]: Without dead ends: 21 [2023-12-15 23:02:39,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 29 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 501 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=292, Invalid=1268, Unknown=0, NotChecked=0, Total=1560 [2023-12-15 23:02:39,607 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 11 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 23:02:39,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 104 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 23:02:39,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2023-12-15 23:02:39,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2023-12-15 23:02:39,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 13 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 6 states have return successors, (7), 6 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-15 23:02:39,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2023-12-15 23:02:39,614 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 24 [2023-12-15 23:02:39,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:02:39,614 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2023-12-15 23:02:39,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 27 states have internal predecessors, (32), 9 states have call successors, (9), 5 states have call predecessors, (9), 9 states have return successors, (12), 8 states have call predecessors, (12), 9 states have call successors, (12) [2023-12-15 23:02:39,615 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2023-12-15 23:02:39,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-15 23:02:39,615 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:02:39,615 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:02:39,622 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 23:02:39,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-12-15 23:02:39,822 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:02:39,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:02:39,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1362462852, now seen corresponding path program 3 times [2023-12-15 23:02:39,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:02:39,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941121016] [2023-12-15 23:02:39,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:02:39,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:02:39,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:02:40,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 23:02:40,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:02:40,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 23:02:40,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:02:40,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 23:02:40,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:02:40,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 23:02:40,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:02:40,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 23:02:40,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:02:40,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 23:02:40,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:02:40,740 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 8 proven. 35 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-12-15 23:02:40,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:02:40,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941121016] [2023-12-15 23:02:40,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941121016] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 23:02:40,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2091193987] [2023-12-15 23:02:40,743 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-15 23:02:40,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 23:02:40,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 23:02:40,749 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 23:02:40,771 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 23:02:40,821 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-12-15 23:02:40,821 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-15 23:02:40,823 WARN L260 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 77 conjunts are in the unsatisfiable core [2023-12-15 23:02:40,826 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 23:02:40,832 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 1 [2023-12-15 23:02:41,115 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-12-15 23:02:41,115 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 23:02:42,740 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:02:42,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2091193987] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 23:02:42,740 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 23:02:42,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 25] total 42 [2023-12-15 23:02:42,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943976352] [2023-12-15 23:02:42,741 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 23:02:42,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-12-15 23:02:42,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:02:42,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-12-15 23:02:42,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=326, Invalid=1480, Unknown=0, NotChecked=0, Total=1806 [2023-12-15 23:02:42,743 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 43 states, 32 states have (on average 1.25) internal successors, (40), 35 states have internal predecessors, (40), 11 states have call successors, (11), 7 states have call predecessors, (11), 13 states have return successors, (18), 12 states have call predecessors, (18), 11 states have call successors, (18) [2023-12-15 23:02:43,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:02:43,040 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2023-12-15 23:02:43,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-15 23:02:43,041 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 32 states have (on average 1.25) internal successors, (40), 35 states have internal predecessors, (40), 11 states have call successors, (11), 7 states have call predecessors, (11), 13 states have return successors, (18), 12 states have call predecessors, (18), 11 states have call successors, (18) Word has length 34 [2023-12-15 23:02:43,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:02:43,042 INFO L225 Difference]: With dead ends: 27 [2023-12-15 23:02:43,042 INFO L226 Difference]: Without dead ends: 23 [2023-12-15 23:02:43,043 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 45 SyntacticMatches, 5 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 951 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=476, Invalid=2074, Unknown=0, NotChecked=0, Total=2550 [2023-12-15 23:02:43,044 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 23:02:43,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 149 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 23:02:43,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-12-15 23:02:43,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2023-12-15 23:02:43,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 14 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 7 states have return successors, (8), 7 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-15 23:02:43,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2023-12-15 23:02:43,048 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 34 [2023-12-15 23:02:43,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:02:43,049 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2023-12-15 23:02:43,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 32 states have (on average 1.25) internal successors, (40), 35 states have internal predecessors, (40), 11 states have call successors, (11), 7 states have call predecessors, (11), 13 states have return successors, (18), 12 states have call predecessors, (18), 11 states have call successors, (18) [2023-12-15 23:02:43,049 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2023-12-15 23:02:43,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-12-15 23:02:43,050 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:02:43,050 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:02:43,058 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 23:02:43,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 23:02:43,256 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:02:43,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:02:43,256 INFO L85 PathProgramCache]: Analyzing trace with hash -2002779038, now seen corresponding path program 4 times [2023-12-15 23:02:43,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:02:43,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025595559] [2023-12-15 23:02:43,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:02:43,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:02:43,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:02:43,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 23:02:43,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:02:43,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 23:02:43,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:02:43,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 23:02:43,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:02:44,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 23:02:44,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:02:44,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 23:02:44,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:02:44,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 23:02:44,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:02:44,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 23:02:44,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:02:44,283 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 18 proven. 28 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2023-12-15 23:02:44,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:02:44,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025595559] [2023-12-15 23:02:44,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025595559] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 23:02:44,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [404517558] [2023-12-15 23:02:44,284 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-15 23:02:44,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 23:02:44,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 23:02:44,285 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 23:02:44,305 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 23:02:44,357 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-15 23:02:44,357 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-15 23:02:44,359 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 67 conjunts are in the unsatisfiable core [2023-12-15 23:02:44,362 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 23:02:44,424 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 25 treesize of output 13 [2023-12-15 23:02:44,495 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 16 proven. 18 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2023-12-15 23:02:44,496 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 23:02:45,388 INFO L349 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2023-12-15 23:02:45,388 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 25 [2023-12-15 23:02:45,697 INFO L349 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2023-12-15 23:02:45,698 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 25 [2023-12-15 23:02:45,957 INFO L349 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2023-12-15 23:02:45,957 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 25 [2023-12-15 23:02:46,152 INFO L349 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2023-12-15 23:02:46,152 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 25 [2023-12-15 23:02:46,281 INFO L349 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2023-12-15 23:02:46,281 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 25 [2023-12-15 23:02:46,551 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 6 proven. 28 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2023-12-15 23:02:46,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [404517558] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 23:02:46,551 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 23:02:46,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 11] total 23 [2023-12-15 23:02:46,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395771299] [2023-12-15 23:02:46,551 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 23:02:46,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-15 23:02:46,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:02:46,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-15 23:02:46,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=436, Unknown=0, NotChecked=0, Total=506 [2023-12-15 23:02:46,555 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand has 23 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 20 states have internal predecessors, (27), 6 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (7), 3 states have call predecessors, (7), 6 states have call successors, (7) [2023-12-15 23:02:46,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:02:46,764 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2023-12-15 23:02:46,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-15 23:02:46,764 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 20 states have internal predecessors, (27), 6 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (7), 3 states have call predecessors, (7), 6 states have call successors, (7) Word has length 39 [2023-12-15 23:02:46,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:02:46,765 INFO L225 Difference]: With dead ends: 23 [2023-12-15 23:02:46,765 INFO L226 Difference]: Without dead ends: 0 [2023-12-15 23:02:46,766 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=123, Invalid=689, Unknown=0, NotChecked=0, Total=812 [2023-12-15 23:02:46,769 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 7 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 23:02:46,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 27 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 23:02:46,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-15 23:02:46,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-15 23:02:46,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states 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 23:02:46,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-15 23:02:46,770 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 39 [2023-12-15 23:02:46,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:02:46,770 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-15 23:02:46,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 20 states have internal predecessors, (27), 6 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (7), 3 states have call predecessors, (7), 6 states have call successors, (7) [2023-12-15 23:02:46,771 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-15 23:02:46,771 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-15 23:02:46,773 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 23:02:46,779 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 23:02:46,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 23:02:46,976 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-15 23:02:46,994 INFO L895 garLoopResultBuilder]: At program point L32(line 32) the Hoare annotation is: (and (= |func_to_recursive_line_19_to_19_0_#in~a.offset| func_to_recursive_line_19_to_19_0_~a.offset) (<= (select (select |#memory_int#1| func_to_recursive_line_19_to_19_0_~a.base) func_to_recursive_line_19_to_19_0_~a.offset) 6) (= (store |old(#memory_int#1)| func_to_recursive_line_19_to_19_0_~a.base (let ((.cse0 (select |old(#memory_int#1)| func_to_recursive_line_19_to_19_0_~a.base))) (store .cse0 func_to_recursive_line_19_to_19_0_~a.offset (+ (select .cse0 func_to_recursive_line_19_to_19_0_~a.offset) 1)))) |#memory_int#1|) (= |func_to_recursive_line_19_to_19_0_#in~a.base| func_to_recursive_line_19_to_19_0_~a.base)) [2023-12-15 23:02:46,994 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 23 37) the Hoare annotation is: (= |#memory_int#1| |old(#memory_int#1)|) [2023-12-15 23:02:46,995 INFO L899 garLoopResultBuilder]: For program point L25(lines 25 36) no Hoare annotation was computed. [2023-12-15 23:02:46,995 INFO L899 garLoopResultBuilder]: For program point L25-1(lines 23 37) no Hoare annotation was computed. [2023-12-15 23:02:46,995 INFO L899 garLoopResultBuilder]: For program point func_to_recursive_line_19_to_19_0EXIT(lines 23 37) no Hoare annotation was computed. [2023-12-15 23:02:46,995 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-12-15 23:02:46,995 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 48) no Hoare annotation was computed. [2023-12-15 23:02:46,995 INFO L899 garLoopResultBuilder]: For program point L48(line 48) no Hoare annotation was computed. [2023-12-15 23:02:46,995 INFO L899 garLoopResultBuilder]: For program point L46(lines 46 52) no Hoare annotation was computed. [2023-12-15 23:02:46,995 INFO L895 garLoopResultBuilder]: At program point L44(line 44) the Hoare annotation is: (and (= (select (select |#memory_int#1| |ULTIMATE.start_main_~#a~0#1.base|) 0) 0) (= |ULTIMATE.start_main_~#a~0#1.offset| 0)) [2023-12-15 23:02:46,995 INFO L899 garLoopResultBuilder]: For program point L46-2(lines 46 52) no Hoare annotation was computed. [2023-12-15 23:02:46,995 INFO L899 garLoopResultBuilder]: For program point L44-1(line 44) no Hoare annotation was computed. [2023-12-15 23:02:46,995 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-12-15 23:02:46,997 INFO L445 BasicCegarLoop]: Path program histogram: [4, 1] [2023-12-15 23:02:46,999 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 23:02:47,002 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 11:02:47 BoogieIcfgContainer [2023-12-15 23:02:47,002 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 23:02:47,002 INFO L158 Benchmark]: Toolchain (without parser) took 12414.80ms. Allocated memory was 192.9MB in the beginning and 324.0MB in the end (delta: 131.1MB). Free memory was 151.1MB in the beginning and 251.1MB in the end (delta: -99.9MB). Peak memory consumption was 31.9MB. Max. memory is 8.0GB. [2023-12-15 23:02:47,002 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 192.9MB. Free memory is still 145.9MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 23:02:47,003 INFO L158 Benchmark]: CACSL2BoogieTranslator took 163.66ms. Allocated memory is still 192.9MB. Free memory was 150.8MB in the beginning and 140.3MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-15 23:02:47,003 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.34ms. Allocated memory is still 192.9MB. Free memory was 140.3MB in the beginning and 138.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-15 23:02:47,003 INFO L158 Benchmark]: Boogie Preprocessor took 27.15ms. Allocated memory is still 192.9MB. Free memory was 138.9MB in the beginning and 137.5MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-15 23:02:47,003 INFO L158 Benchmark]: RCFGBuilder took 273.32ms. Allocated memory is still 192.9MB. Free memory was 137.2MB in the beginning and 127.0MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-15 23:02:47,004 INFO L158 Benchmark]: TraceAbstraction took 11920.93ms. Allocated memory was 192.9MB in the beginning and 324.0MB in the end (delta: 131.1MB). Free memory was 126.3MB in the beginning and 251.1MB in the end (delta: -124.7MB). Peak memory consumption was 6.7MB. Max. memory is 8.0GB. [2023-12-15 23:02:47,005 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 192.9MB. Free memory is still 145.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 163.66ms. Allocated memory is still 192.9MB. Free memory was 150.8MB in the beginning and 140.3MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 23.34ms. Allocated memory is still 192.9MB. Free memory was 140.3MB in the beginning and 138.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 27.15ms. Allocated memory is still 192.9MB. Free memory was 138.9MB in the beginning and 137.5MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 273.32ms. Allocated memory is still 192.9MB. Free memory was 137.2MB in the beginning and 127.0MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 11920.93ms. Allocated memory was 192.9MB in the beginning and 324.0MB in the end (delta: 131.1MB). Free memory was 126.3MB in the beginning and 251.1MB in the end (delta: -124.7MB). Peak memory consumption was 6.7MB. 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 - PositiveResult [Line: 48]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 11.9s, OverallIterations: 5, TraceHistogramMax: 7, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 39 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 39 mSDsluCounter, 369 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 327 mSDsCounter, 21 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 588 IncrementalHoareTripleChecker+Invalid, 609 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 21 mSolverCounterUnsat, 42 mSDtfsCounter, 588 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 325 GetRequests, 171 SyntacticMatches, 9 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1718 ImplicationChecksByTransitivity, 2.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=4, InterpolantAutomatonStates: 49, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 5 PreInvPairs, 5 NumberOfFragments, 45 HoareAnnotationTreeSize, 5 FormulaSimplifications, 7 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FormulaSimplificationsInter, 16 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 9.3s InterpolantComputationTime, 231 NumberOfCodeBlocks, 230 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 329 ConstructedInterpolants, 4 QuantifiedInterpolants, 3160 SizeOfPredicates, 50 NumberOfNonLiveVariables, 480 ConjunctsInSsa, 226 ConjunctsInUnsatCore, 13 InterpolantComputations, 1 PerfectInterpolantSequences, 319/600 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-12-15 23:02:47,021 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...