/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/array-examples/standard_two_index_08.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 00:03:42,858 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 00:03:42,923 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-16 00:03:42,927 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 00:03:42,928 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 00:03:42,948 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 00:03:42,949 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 00:03:42,949 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 00:03:42,949 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 00:03:42,952 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 00:03:42,952 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 00:03:42,953 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 00:03:42,953 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 00:03:42,954 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 00:03:42,954 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 00:03:42,955 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 00:03:42,955 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 00:03:42,955 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 00:03:42,955 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 00:03:42,956 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 00:03:42,956 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 00:03:42,956 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 00:03:42,957 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 00:03:42,957 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 00:03:42,957 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 00:03:42,957 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 00:03:42,957 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 00:03:42,957 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 00:03:42,958 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 00:03:42,958 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 00:03:42,958 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 00:03:42,959 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 00:03:42,959 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 00:03:42,959 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 00:03:42,959 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 00:03:42,959 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 00:03:42,959 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 00:03:42,959 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 00:03:42,959 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 00:03:42,959 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 00:03:42,959 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 00:03:42,960 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 00:03:42,960 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 00:03:42,960 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-16 00:03:43,149 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 00:03:43,165 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 00:03:43,166 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 00:03:43,167 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 00:03:43,167 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 00:03:43,168 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_two_index_08.i [2023-12-16 00:03:44,200 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 00:03:44,350 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 00:03:44,351 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_two_index_08.i [2023-12-16 00:03:44,356 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/606945596/a90c0943e1ea46afb9f26f36c1062136/FLAG779f46f90 [2023-12-16 00:03:44,369 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/606945596/a90c0943e1ea46afb9f26f36c1062136 [2023-12-16 00:03:44,371 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 00:03:44,372 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 00:03:44,373 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 00:03:44,373 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 00:03:44,377 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 00:03:44,377 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 12:03:44" (1/1) ... [2023-12-16 00:03:44,378 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@589bf141 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:03:44, skipping insertion in model container [2023-12-16 00:03:44,378 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 12:03:44" (1/1) ... [2023-12-16 00:03:44,395 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 00:03:44,507 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_two_index_08.i[814,827] [2023-12-16 00:03:44,516 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 00:03:44,524 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 00:03:44,532 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_two_index_08.i[814,827] [2023-12-16 00:03:44,539 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 00:03:44,548 INFO L206 MainTranslator]: Completed translation [2023-12-16 00:03:44,549 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:03:44 WrapperNode [2023-12-16 00:03:44,549 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 00:03:44,550 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 00:03:44,550 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 00:03:44,550 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 00:03:44,555 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:03:44" (1/1) ... [2023-12-16 00:03:44,565 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:03:44" (1/1) ... [2023-12-16 00:03:44,577 INFO L138 Inliner]: procedures = 16, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 59 [2023-12-16 00:03:44,577 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 00:03:44,577 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 00:03:44,577 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 00:03:44,578 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 00:03:44,585 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:03:44" (1/1) ... [2023-12-16 00:03:44,585 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:03:44" (1/1) ... [2023-12-16 00:03:44,587 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:03:44" (1/1) ... [2023-12-16 00:03:44,595 INFO L175 MemorySlicer]: Split 7 memory accesses to 3 slices as follows [2, 2, 3]. 43 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2023-12-16 00:03:44,595 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:03:44" (1/1) ... [2023-12-16 00:03:44,595 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:03:44" (1/1) ... [2023-12-16 00:03:44,598 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:03:44" (1/1) ... [2023-12-16 00:03:44,600 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:03:44" (1/1) ... [2023-12-16 00:03:44,601 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:03:44" (1/1) ... [2023-12-16 00:03:44,602 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:03:44" (1/1) ... [2023-12-16 00:03:44,603 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 00:03:44,603 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 00:03:44,603 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 00:03:44,604 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 00:03:44,604 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:03:44" (1/1) ... [2023-12-16 00:03:44,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 00:03:44,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:03:44,635 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-16 00:03:44,650 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-16 00:03:44,657 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 00:03:44,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 00:03:44,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-16 00:03:44,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-12-16 00:03:44,657 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-16 00:03:44,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-12-16 00:03:44,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-12-16 00:03:44,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-12-16 00:03:44,659 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 00:03:44,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 00:03:44,659 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-12-16 00:03:44,660 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-12-16 00:03:44,660 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-12-16 00:03:44,660 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-16 00:03:44,735 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 00:03:44,736 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 00:03:44,817 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 00:03:44,840 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 00:03:44,841 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-12-16 00:03:44,841 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 12:03:44 BoogieIcfgContainer [2023-12-16 00:03:44,841 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 00:03:44,843 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 00:03:44,843 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 00:03:44,845 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 00:03:44,845 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 12:03:44" (1/3) ... [2023-12-16 00:03:44,845 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72a875b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 12:03:44, skipping insertion in model container [2023-12-16 00:03:44,846 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:03:44" (2/3) ... [2023-12-16 00:03:44,846 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72a875b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 12:03:44, skipping insertion in model container [2023-12-16 00:03:44,849 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 12:03:44" (3/3) ... [2023-12-16 00:03:44,850 INFO L112 eAbstractionObserver]: Analyzing ICFG standard_two_index_08.i [2023-12-16 00:03:44,863 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 00:03:44,863 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 00:03:44,903 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 00:03:44,909 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;@6d12a92a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 00:03:44,909 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 00:03:44,912 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.8) internal successors, (18), 11 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:03:44,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-12-16 00:03:44,917 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:03:44,918 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:03:44,918 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:03:44,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:03:44,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1148868036, now seen corresponding path program 1 times [2023-12-16 00:03:44,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:03:44,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112686822] [2023-12-16 00:03:44,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:03:44,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:03:44,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:03:45,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:03:45,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:03:45,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112686822] [2023-12-16 00:03:45,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112686822] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:03:45,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:03:45,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 00:03:45,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916343853] [2023-12-16 00:03:45,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:03:45,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 00:03:45,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:03:45,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 00:03:45,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 00:03:45,151 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.8) internal successors, (18), 11 states have internal predecessors, (18), 0 states have call successors, (0), 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) [2023-12-16 00:03:45,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:03:45,186 INFO L93 Difference]: Finished difference Result 23 states and 35 transitions. [2023-12-16 00:03:45,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 00:03:45,188 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 [2023-12-16 00:03:45,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:03:45,192 INFO L225 Difference]: With dead ends: 23 [2023-12-16 00:03:45,192 INFO L226 Difference]: Without dead ends: 11 [2023-12-16 00:03:45,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 00:03:45,196 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 00:03:45,197 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 14 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:03:45,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2023-12-16 00:03:45,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2023-12-16 00:03:45,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:03:45,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2023-12-16 00:03:45,218 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 8 [2023-12-16 00:03:45,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:03:45,219 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2023-12-16 00:03:45,219 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) [2023-12-16 00:03:45,219 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2023-12-16 00:03:45,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-16 00:03:45,220 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:03:45,220 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:03:45,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-16 00:03:45,220 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:03:45,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:03:45,221 INFO L85 PathProgramCache]: Analyzing trace with hash -790446873, now seen corresponding path program 1 times [2023-12-16 00:03:45,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:03:45,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348861163] [2023-12-16 00:03:45,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:03:45,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:03:45,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:03:45,286 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:03:45,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:03:45,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348861163] [2023-12-16 00:03:45,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348861163] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 00:03:45,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [331176616] [2023-12-16 00:03:45,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:03:45,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:03:45,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:03:45,290 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 00:03:45,298 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-16 00:03:45,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:03:45,342 INFO L262 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 00:03:45,345 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 00:03:45,353 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-16 00:03:45,353 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 00:03:45,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [331176616] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:03:45,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 00:03:45,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-12-16 00:03:45,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997546088] [2023-12-16 00:03:45,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:03:45,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 00:03:45,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:03:45,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 00:03:45,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-16 00:03:45,356 INFO L87 Difference]: Start difference. First operand 11 states and 13 transitions. Second operand has 3 states, 3 states have (on average 3.0) 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) [2023-12-16 00:03:45,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:03:45,384 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2023-12-16 00:03:45,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 00:03:45,384 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) 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 9 [2023-12-16 00:03:45,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:03:45,385 INFO L225 Difference]: With dead ends: 23 [2023-12-16 00:03:45,385 INFO L226 Difference]: Without dead ends: 17 [2023-12-16 00:03:45,385 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-16 00:03:45,386 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 4 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 00:03:45,386 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 10 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:03:45,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2023-12-16 00:03:45,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 12. [2023-12-16 00:03:45,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:03:45,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2023-12-16 00:03:45,389 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 9 [2023-12-16 00:03:45,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:03:45,389 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2023-12-16 00:03:45,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) 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) [2023-12-16 00:03:45,390 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2023-12-16 00:03:45,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-16 00:03:45,390 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:03:45,390 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:03:45,401 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-16 00:03:45,596 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 [2023-12-16 00:03:45,597 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:03:45,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:03:45,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1317396867, now seen corresponding path program 1 times [2023-12-16 00:03:45,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:03:45,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742080654] [2023-12-16 00:03:45,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:03:45,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:03:45,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:03:45,645 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-16 00:03:45,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:03:45,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742080654] [2023-12-16 00:03:45,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742080654] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 00:03:45,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [609608152] [2023-12-16 00:03:45,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:03:45,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:03:45,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:03:45,649 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 00:03:45,659 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-16 00:03:45,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:03:45,692 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 00:03:45,693 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 00:03:45,717 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-16 00:03:45,718 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 00:03:45,732 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-16 00:03:45,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [609608152] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 00:03:45,733 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 00:03:45,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-12-16 00:03:45,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794448573] [2023-12-16 00:03:45,733 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 00:03:45,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 00:03:45,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:03:45,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 00:03:45,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-12-16 00:03:45,735 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:03:45,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:03:45,774 INFO L93 Difference]: Finished difference Result 35 states and 42 transitions. [2023-12-16 00:03:45,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 00:03:45,775 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 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 10 [2023-12-16 00:03:45,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:03:45,776 INFO L225 Difference]: With dead ends: 35 [2023-12-16 00:03:45,776 INFO L226 Difference]: Without dead ends: 26 [2023-12-16 00:03:45,776 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-12-16 00:03:45,780 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 15 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 00:03:45,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 19 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:03:45,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-12-16 00:03:45,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 16. [2023-12-16 00:03:45,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:03:45,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2023-12-16 00:03:45,787 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 10 [2023-12-16 00:03:45,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:03:45,787 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2023-12-16 00:03:45,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:03:45,788 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2023-12-16 00:03:45,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-12-16 00:03:45,788 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:03:45,788 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:03:45,800 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-16 00:03:45,992 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 [2023-12-16 00:03:45,993 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:03:45,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:03:45,993 INFO L85 PathProgramCache]: Analyzing trace with hash -1476057404, now seen corresponding path program 2 times [2023-12-16 00:03:45,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:03:45,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336185459] [2023-12-16 00:03:45,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:03:45,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:03:46,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:03:46,087 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-16 00:03:46,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:03:46,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336185459] [2023-12-16 00:03:46,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336185459] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 00:03:46,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [404436486] [2023-12-16 00:03:46,088 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 00:03:46,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:03:46,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:03:46,090 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 00:03:46,091 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-16 00:03:46,154 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-16 00:03:46,154 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 00:03:46,155 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 00:03:46,157 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 00:03:46,198 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-16 00:03:46,198 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 00:03:46,247 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-16 00:03:46,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [404436486] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 00:03:46,248 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 00:03:46,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 15 [2023-12-16 00:03:46,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872512300] [2023-12-16 00:03:46,248 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 00:03:46,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-16 00:03:46,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:03:46,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-16 00:03:46,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=106, Unknown=0, NotChecked=0, Total=210 [2023-12-16 00:03:46,252 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand has 15 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 15 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:03:46,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:03:46,308 INFO L93 Difference]: Finished difference Result 56 states and 69 transitions. [2023-12-16 00:03:46,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-16 00:03:46,309 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 15 states have internal predecessors, (26), 0 states have call successors, (0), 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 14 [2023-12-16 00:03:46,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:03:46,311 INFO L225 Difference]: With dead ends: 56 [2023-12-16 00:03:46,311 INFO L226 Difference]: Without dead ends: 46 [2023-12-16 00:03:46,312 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=104, Invalid=106, Unknown=0, NotChecked=0, Total=210 [2023-12-16 00:03:46,315 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 31 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 00:03:46,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 28 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:03:46,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2023-12-16 00:03:46,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 26. [2023-12-16 00:03:46,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.12) internal successors, (28), 25 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:03:46,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2023-12-16 00:03:46,325 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 14 [2023-12-16 00:03:46,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:03:46,325 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2023-12-16 00:03:46,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 15 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:03:46,326 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2023-12-16 00:03:46,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-12-16 00:03:46,326 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:03:46,326 INFO L195 NwaCegarLoop]: trace histogram [12, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:03:46,331 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-16 00:03:46,531 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 [2023-12-16 00:03:46,532 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:03:46,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:03:46,532 INFO L85 PathProgramCache]: Analyzing trace with hash 16464004, now seen corresponding path program 3 times [2023-12-16 00:03:46,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:03:46,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172690094] [2023-12-16 00:03:46,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:03:46,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:03:46,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:03:46,693 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-12-16 00:03:46,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:03:46,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172690094] [2023-12-16 00:03:46,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172690094] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 00:03:46,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [218185152] [2023-12-16 00:03:46,694 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-16 00:03:46,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:03:46,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:03:46,695 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 00:03:46,715 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-16 00:03:46,762 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-12-16 00:03:46,762 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 00:03:46,764 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 00:03:46,765 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 00:03:46,790 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-12-16 00:03:46,790 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 00:03:46,837 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-12-16 00:03:46,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [218185152] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 00:03:46,837 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 00:03:46,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2023-12-16 00:03:46,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891612135] [2023-12-16 00:03:46,837 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 00:03:46,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-16 00:03:46,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:03:46,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-16 00:03:46,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-12-16 00:03:46,838 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand has 13 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 13 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:03:46,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:03:46,916 INFO L93 Difference]: Finished difference Result 84 states and 92 transitions. [2023-12-16 00:03:46,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-16 00:03:46,916 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 13 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2023-12-16 00:03:46,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:03:46,917 INFO L225 Difference]: With dead ends: 84 [2023-12-16 00:03:46,917 INFO L226 Difference]: Without dead ends: 78 [2023-12-16 00:03:46,917 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-12-16 00:03:46,918 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 76 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 00:03:46,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 37 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 00:03:46,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2023-12-16 00:03:46,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 32. [2023-12-16 00:03:46,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.096774193548387) internal successors, (34), 31 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:03:46,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2023-12-16 00:03:46,922 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 24 [2023-12-16 00:03:46,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:03:46,922 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2023-12-16 00:03:46,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 13 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:03:46,923 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2023-12-16 00:03:46,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-12-16 00:03:46,923 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:03:46,923 INFO L195 NwaCegarLoop]: trace histogram [12, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:03:46,933 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-16 00:03:47,132 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 [2023-12-16 00:03:47,132 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:03:47,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:03:47,133 INFO L85 PathProgramCache]: Analyzing trace with hash -2121897660, now seen corresponding path program 4 times [2023-12-16 00:03:47,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:03:47,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462900311] [2023-12-16 00:03:47,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:03:47,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:03:47,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:03:47,334 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-12-16 00:03:47,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:03:47,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462900311] [2023-12-16 00:03:47,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462900311] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 00:03:47,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [942792402] [2023-12-16 00:03:47,334 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-16 00:03:47,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:03:47,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:03:47,335 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 00:03:47,360 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-16 00:03:47,420 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-16 00:03:47,420 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 00:03:47,421 INFO L262 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-16 00:03:47,424 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 00:03:47,513 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-12-16 00:03:47,514 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 00:03:47,722 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-12-16 00:03:47,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [942792402] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 00:03:47,722 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 00:03:47,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 14] total 38 [2023-12-16 00:03:47,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578053284] [2023-12-16 00:03:47,723 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 00:03:47,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-12-16 00:03:47,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:03:47,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-12-16 00:03:47,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=702, Invalid=704, Unknown=0, NotChecked=0, Total=1406 [2023-12-16 00:03:47,727 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand has 38 states, 38 states have (on average 1.3157894736842106) internal successors, (50), 38 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:03:47,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:03:47,845 INFO L93 Difference]: Finished difference Result 141 states and 170 transitions. [2023-12-16 00:03:47,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-12-16 00:03:47,845 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.3157894736842106) internal successors, (50), 38 states have internal predecessors, (50), 0 states have call successors, (0), 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 30 [2023-12-16 00:03:47,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:03:47,848 INFO L225 Difference]: With dead ends: 141 [2023-12-16 00:03:47,848 INFO L226 Difference]: Without dead ends: 123 [2023-12-16 00:03:47,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 577 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=702, Invalid=704, Unknown=0, NotChecked=0, Total=1406 [2023-12-16 00:03:47,851 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 239 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 00:03:47,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [239 Valid, 64 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 00:03:47,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2023-12-16 00:03:47,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 58. [2023-12-16 00:03:47,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 1.0526315789473684) internal successors, (60), 57 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) [2023-12-16 00:03:47,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 60 transitions. [2023-12-16 00:03:47,866 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 60 transitions. Word has length 30 [2023-12-16 00:03:47,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:03:47,867 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 60 transitions. [2023-12-16 00:03:47,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 1.3157894736842106) internal successors, (50), 38 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:03:47,867 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 60 transitions. [2023-12-16 00:03:47,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-12-16 00:03:47,869 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:03:47,869 INFO L195 NwaCegarLoop]: trace histogram [35, 13, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:03:47,876 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-16 00:03:48,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:03:48,075 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:03:48,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:03:48,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1282731747, now seen corresponding path program 5 times [2023-12-16 00:03:48,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:03:48,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406423856] [2023-12-16 00:03:48,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:03:48,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:03:48,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:03:48,405 INFO L134 CoverageAnalysis]: Checked inductivity of 721 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2023-12-16 00:03:48,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:03:48,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406423856] [2023-12-16 00:03:48,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406423856] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 00:03:48,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1663018021] [2023-12-16 00:03:48,405 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-16 00:03:48,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:03:48,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:03:48,407 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) [2023-12-16 00:03:48,421 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process Received shutdown request... [2023-12-16 00:05:05,873 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 00:05:05,873 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 00:05:06,880 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 [2023-12-16 00:05:07,074 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forcibly destroying the process [2023-12-16 00:05:07,081 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 00:05:07,081 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-16 00:05:07,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2023-12-16 00:05:07,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271167806] [2023-12-16 00:05:07,082 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-16 00:05:07,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-16 00:05:07,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:05:07,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-16 00:05:07,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2023-12-16 00:05:07,083 INFO L87 Difference]: Start difference. First operand 58 states and 60 transitions. Second operand has 16 states, 16 states have (on average 1.375) internal successors, (22), 16 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) [2023-12-16 00:05:07,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 00:05:07,084 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2023-12-16 00:05:07,084 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 00:05:07,085 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:05:07,085 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 00:05:07,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:05:07,086 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (58states) and FLOYD_HOARE automaton (currently 2 states, 16 states before enhancement),while ReachableStatesComputation was computing reachable states (1 states constructed, input type IntersectNwa). [2023-12-16 00:05:07,088 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 137 [2023-12-16 00:05:07,094 INFO L445 BasicCegarLoop]: Path program histogram: [5, 1, 1] [2023-12-16 00:05:07,095 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 00:05:07,098 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 12:05:07 BoogieIcfgContainer [2023-12-16 00:05:07,098 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 00:05:07,098 INFO L158 Benchmark]: Toolchain (without parser) took 82726.36ms. Allocated memory was 208.7MB in the beginning and 271.6MB in the end (delta: 62.9MB). Free memory was 160.4MB in the beginning and 188.9MB in the end (delta: -28.5MB). Peak memory consumption was 35.4MB. Max. memory is 8.0GB. [2023-12-16 00:05:07,099 INFO L158 Benchmark]: CDTParser took 0.50ms. Allocated memory is still 208.7MB. Free memory is still 157.6MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 00:05:07,099 INFO L158 Benchmark]: CACSL2BoogieTranslator took 176.18ms. Allocated memory is still 208.7MB. Free memory was 160.1MB in the beginning and 149.3MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-16 00:05:07,099 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.24ms. Allocated memory is still 208.7MB. Free memory was 149.3MB in the beginning and 147.8MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-16 00:05:07,099 INFO L158 Benchmark]: Boogie Preprocessor took 25.49ms. Allocated memory is still 208.7MB. Free memory was 147.8MB in the beginning and 145.8MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-16 00:05:07,099 INFO L158 Benchmark]: RCFGBuilder took 237.76ms. Allocated memory is still 208.7MB. Free memory was 145.8MB in the beginning and 133.9MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-12-16 00:05:07,100 INFO L158 Benchmark]: TraceAbstraction took 82255.52ms. Allocated memory was 208.7MB in the beginning and 271.6MB in the end (delta: 62.9MB). Free memory was 133.2MB in the beginning and 188.9MB in the end (delta: -55.7MB). Peak memory consumption was 8.2MB. Max. memory is 8.0GB. [2023-12-16 00:05:07,101 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.50ms. Allocated memory is still 208.7MB. Free memory is still 157.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 176.18ms. Allocated memory is still 208.7MB. Free memory was 160.1MB in the beginning and 149.3MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 27.24ms. Allocated memory is still 208.7MB. Free memory was 149.3MB in the beginning and 147.8MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 25.49ms. Allocated memory is still 208.7MB. Free memory was 147.8MB in the beginning and 145.8MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 237.76ms. Allocated memory is still 208.7MB. Free memory was 145.8MB in the beginning and 133.9MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 82255.52ms. Allocated memory was 208.7MB in the beginning and 271.6MB in the end (delta: 62.9MB). Free memory was 133.2MB in the beginning and 188.9MB in the end (delta: -55.7MB). Peak memory consumption was 8.2MB. 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: 13]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 13). Cancelled while NwaCegarLoop was constructing difference of abstraction (58states) and FLOYD_HOARE automaton (currently 2 states, 16 states before enhancement),while ReachableStatesComputation was computing reachable states (1 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 82.2s, OverallIterations: 7, TraceHistogramMax: 35, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 365 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 365 mSDsluCounter, 172 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 126 mSDsCounter, 162 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 266 IncrementalHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 162 mSolverCounterUnsat, 46 mSDtfsCounter, 266 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 205 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 658 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=58occurred in iteration=6, InterpolantAutomatonStates: 78, 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, 6 MinimizatonAttempts, 146 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 238 NumberOfCodeBlocks, 230 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 300 ConstructedInterpolants, 0 QuantifiedInterpolants, 478 SizeOfPredicates, 0 NumberOfNonLiveVariables, 666 ConjunctsInSsa, 31 ConjunctsInUnsatCore, 16 InterpolantComputations, 2 PerfectInterpolantSequences, 1072/1431 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