/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-programs/copysome2-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 08:06:41,034 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 08:06:41,102 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 08:06:41,107 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 08:06:41,108 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 08:06:41,131 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 08:06:41,132 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 08:06:41,132 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 08:06:41,132 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 08:06:41,133 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 08:06:41,133 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 08:06:41,133 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 08:06:41,134 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 08:06:41,134 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 08:06:41,134 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 08:06:41,134 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 08:06:41,134 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 08:06:41,135 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 08:06:41,135 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 08:06:41,135 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 08:06:41,135 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 08:06:41,139 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 08:06:41,139 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 08:06:41,139 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 08:06:41,144 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 08:06:41,144 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 08:06:41,145 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 08:06:41,145 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 08:06:41,145 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 08:06:41,145 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 08:06:41,146 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 08:06:41,146 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 08:06:41,146 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 08:06:41,147 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 08:06:41,147 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 08:06:41,147 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 08:06:41,147 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 08:06:41,147 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 08:06:41,147 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 08:06:41,147 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 08:06:41,147 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 08:06:41,148 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 08:06:41,148 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 08:06:41,148 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-20 08:06:41,336 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 08:06:41,352 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 08:06:41,354 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 08:06:41,355 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 08:06:41,355 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 08:06:41,356 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-programs/copysome2-2.i [2023-12-20 08:06:42,529 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 08:06:42,661 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 08:06:42,662 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-programs/copysome2-2.i [2023-12-20 08:06:42,676 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d47607fd2/74f38b188ad74407a05fb612404deffe/FLAG7692bebce [2023-12-20 08:06:42,691 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d47607fd2/74f38b188ad74407a05fb612404deffe [2023-12-20 08:06:42,693 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 08:06:42,694 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 08:06:42,696 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 08:06:42,696 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 08:06:42,699 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 08:06:42,699 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 08:06:42" (1/1) ... [2023-12-20 08:06:42,700 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46b3c3f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:06:42, skipping insertion in model container [2023-12-20 08:06:42,700 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 08:06:42" (1/1) ... [2023-12-20 08:06:42,718 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 08:06:42,822 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-programs/copysome2-2.i[804,817] [2023-12-20 08:06:42,835 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 08:06:42,841 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 08:06:42,849 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-programs/copysome2-2.i[804,817] [2023-12-20 08:06:42,855 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 08:06:42,864 INFO L206 MainTranslator]: Completed translation [2023-12-20 08:06:42,865 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:06:42 WrapperNode [2023-12-20 08:06:42,865 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 08:06:42,866 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 08:06:42,866 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 08:06:42,866 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 08:06:42,870 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:06:42" (1/1) ... [2023-12-20 08:06:42,882 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:06:42" (1/1) ... [2023-12-20 08:06:42,895 INFO L138 Inliner]: procedures = 16, calls = 27, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 91 [2023-12-20 08:06:42,895 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 08:06:42,896 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 08:06:42,896 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 08:06:42,896 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 08:06:42,904 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:06:42" (1/1) ... [2023-12-20 08:06:42,905 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:06:42" (1/1) ... [2023-12-20 08:06:42,906 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:06:42" (1/1) ... [2023-12-20 08:06:42,918 INFO L175 MemorySlicer]: Split 13 memory accesses to 4 slices as follows [2, 4, 4, 3]. 31 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 6 writes are split as follows [0, 3, 2, 1]. [2023-12-20 08:06:42,919 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:06:42" (1/1) ... [2023-12-20 08:06:42,919 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:06:42" (1/1) ... [2023-12-20 08:06:42,926 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:06:42" (1/1) ... [2023-12-20 08:06:42,929 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:06:42" (1/1) ... [2023-12-20 08:06:42,930 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:06:42" (1/1) ... [2023-12-20 08:06:42,931 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:06:42" (1/1) ... [2023-12-20 08:06:42,932 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 08:06:42,933 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 08:06:42,933 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 08:06:42,933 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 08:06:42,934 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:06:42" (1/1) ... [2023-12-20 08:06:42,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 08:06:42,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 08:06:42,962 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) [2023-12-20 08:06:42,987 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 08:06:42,987 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 08:06:42,987 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-20 08:06:42,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-12-20 08:06:42,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-12-20 08:06:42,988 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-20 08:06:42,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-12-20 08:06:42,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-12-20 08:06:42,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-12-20 08:06:42,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-12-20 08:06:42,988 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 08:06:42,988 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 08:06:42,988 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-12-20 08:06:42,988 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-12-20 08:06:42,989 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-12-20 08:06:42,989 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-12-20 08:06:42,989 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-20 08:06:42,972 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 [2023-12-20 08:06:43,041 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 08:06:43,042 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 08:06:43,147 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 08:06:43,176 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 08:06:43,176 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-12-20 08:06:43,177 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 08:06:43 BoogieIcfgContainer [2023-12-20 08:06:43,177 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 08:06:43,178 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 08:06:43,178 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 08:06:43,181 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 08:06:43,181 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 08:06:42" (1/3) ... [2023-12-20 08:06:43,181 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64935e64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 08:06:43, skipping insertion in model container [2023-12-20 08:06:43,181 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:06:42" (2/3) ... [2023-12-20 08:06:43,182 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64935e64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 08:06:43, skipping insertion in model container [2023-12-20 08:06:43,182 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 08:06:43" (3/3) ... [2023-12-20 08:06:43,183 INFO L112 eAbstractionObserver]: Analyzing ICFG copysome2-2.i [2023-12-20 08:06:43,195 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 08:06:43,195 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-20 08:06:43,225 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 08:06:43,230 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;@178c0801, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 08:06:43,230 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-20 08:06:43,233 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 16 states have (on average 1.75) internal successors, (28), 17 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) [2023-12-20 08:06:43,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-20 08:06:43,237 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 08:06:43,237 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 08:06:43,238 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 08:06:43,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 08:06:43,242 INFO L85 PathProgramCache]: Analyzing trace with hash -112711166, now seen corresponding path program 1 times [2023-12-20 08:06:43,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 08:06:43,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929245486] [2023-12-20 08:06:43,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 08:06:43,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 08:06:43,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 08:06:43,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 08:06:43,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 08:06:43,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929245486] [2023-12-20 08:06:43,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929245486] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 08:06:43,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 08:06:43,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 08:06:43,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554024478] [2023-12-20 08:06:43,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 08:06:43,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 08:06:43,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 08:06:43,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 08:06:43,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 08:06:43,469 INFO L87 Difference]: Start difference. First operand has 18 states, 16 states have (on average 1.75) internal successors, (28), 17 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) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:06:43,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 08:06:43,542 INFO L93 Difference]: Finished difference Result 41 states and 67 transitions. [2023-12-20 08:06:43,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 08:06:43,544 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 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 [2023-12-20 08:06:43,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 08:06:43,549 INFO L225 Difference]: With dead ends: 41 [2023-12-20 08:06:43,549 INFO L226 Difference]: Without dead ends: 23 [2023-12-20 08:06:43,551 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 [2023-12-20 08:06:43,553 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 08:06:43,554 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 17 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 08:06:43,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-12-20 08:06:43,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 19. [2023-12-20 08:06:43,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 18 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:06:43,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 24 transitions. [2023-12-20 08:06:43,575 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 24 transitions. Word has length 10 [2023-12-20 08:06:43,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 08:06:43,575 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 24 transitions. [2023-12-20 08:06:43,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:06:43,575 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 24 transitions. [2023-12-20 08:06:43,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-20 08:06:43,576 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 08:06:43,576 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 08:06:43,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 08:06:43,577 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 08:06:43,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 08:06:43,577 INFO L85 PathProgramCache]: Analyzing trace with hash -865460509, now seen corresponding path program 1 times [2023-12-20 08:06:43,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 08:06:43,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249543842] [2023-12-20 08:06:43,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 08:06:43,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 08:06:43,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 08:06:43,650 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 08:06:43,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 08:06:43,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249543842] [2023-12-20 08:06:43,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249543842] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 08:06:43,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2127532046] [2023-12-20 08:06:43,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 08:06:43,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 08:06:43,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 08:06:43,653 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) [2023-12-20 08:06:43,661 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-20 08:06:43,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 08:06:43,726 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-20 08:06:43,729 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 08:06:43,756 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 08:06:43,756 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 08:06:43,772 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 08:06:43,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2127532046] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 08:06:43,772 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 08:06:43,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-12-20 08:06:43,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857507944] [2023-12-20 08:06:43,773 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 08:06:43,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 08:06:43,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 08:06:43,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 08:06:43,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-12-20 08:06:43,774 INFO L87 Difference]: Start difference. First operand 19 states and 24 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 6 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) [2023-12-20 08:06:43,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 08:06:43,856 INFO L93 Difference]: Finished difference Result 56 states and 80 transitions. [2023-12-20 08:06:43,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 08:06:43,857 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 6 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) Word has length 17 [2023-12-20 08:06:43,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 08:06:43,858 INFO L225 Difference]: With dead ends: 56 [2023-12-20 08:06:43,858 INFO L226 Difference]: Without dead ends: 40 [2023-12-20 08:06:43,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-12-20 08:06:43,859 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 36 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 08:06:43,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 20 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 08:06:43,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2023-12-20 08:06:43,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2023-12-20 08:06:43,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.3076923076923077) internal successors, (51), 39 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:06:43,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 51 transitions. [2023-12-20 08:06:43,864 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 51 transitions. Word has length 17 [2023-12-20 08:06:43,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 08:06:43,864 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 51 transitions. [2023-12-20 08:06:43,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 6 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) [2023-12-20 08:06:43,865 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 51 transitions. [2023-12-20 08:06:43,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-20 08:06:43,865 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 08:06:43,865 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 08:06:43,871 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-20 08:06:44,070 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 [2023-12-20 08:06:44,071 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 08:06:44,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 08:06:44,071 INFO L85 PathProgramCache]: Analyzing trace with hash -287792660, now seen corresponding path program 2 times [2023-12-20 08:06:44,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 08:06:44,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690680977] [2023-12-20 08:06:44,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 08:06:44,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 08:06:44,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 08:06:44,243 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2023-12-20 08:06:44,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 08:06:44,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690680977] [2023-12-20 08:06:44,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690680977] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 08:06:44,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 08:06:44,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 08:06:44,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019427534] [2023-12-20 08:06:44,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 08:06:44,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 08:06:44,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 08:06:44,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 08:06:44,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 08:06:44,245 INFO L87 Difference]: Start difference. First operand 40 states and 51 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:06:44,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 08:06:44,274 INFO L93 Difference]: Finished difference Result 71 states and 91 transitions. [2023-12-20 08:06:44,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 08:06:44,274 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2023-12-20 08:06:44,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 08:06:44,275 INFO L225 Difference]: With dead ends: 71 [2023-12-20 08:06:44,275 INFO L226 Difference]: Without dead ends: 40 [2023-12-20 08:06:44,283 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 08:06:44,284 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 17 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 08:06:44,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 15 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 08:06:44,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2023-12-20 08:06:44,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2023-12-20 08:06:44,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.2564102564102564) internal successors, (49), 39 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:06:44,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 49 transitions. [2023-12-20 08:06:44,289 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 49 transitions. Word has length 38 [2023-12-20 08:06:44,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 08:06:44,290 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 49 transitions. [2023-12-20 08:06:44,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:06:44,290 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 49 transitions. [2023-12-20 08:06:44,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-20 08:06:44,290 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 08:06:44,290 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 08:06:44,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 08:06:44,291 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 08:06:44,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 08:06:44,291 INFO L85 PathProgramCache]: Analyzing trace with hash 733275694, now seen corresponding path program 1 times [2023-12-20 08:06:44,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 08:06:44,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827130161] [2023-12-20 08:06:44,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 08:06:44,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 08:06:44,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 08:06:44,433 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2023-12-20 08:06:44,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 08:06:44,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827130161] [2023-12-20 08:06:44,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827130161] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 08:06:44,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1991873800] [2023-12-20 08:06:44,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 08:06:44,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 08:06:44,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 08:06:44,438 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) [2023-12-20 08:06:44,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-20 08:06:44,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 08:06:44,541 INFO L262 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-20 08:06:44,545 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 08:06:44,603 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-12-20 08:06:44,603 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 08:06:44,647 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-12-20 08:06:44,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1991873800] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 08:06:44,648 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 08:06:44,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 6] total 14 [2023-12-20 08:06:44,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388909074] [2023-12-20 08:06:44,649 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 08:06:44,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-20 08:06:44,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 08:06:44,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-20 08:06:44,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2023-12-20 08:06:44,655 INFO L87 Difference]: Start difference. First operand 40 states and 49 transitions. Second operand has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 14 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:06:44,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 08:06:44,913 INFO L93 Difference]: Finished difference Result 130 states and 187 transitions. [2023-12-20 08:06:44,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 08:06:44,913 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 14 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2023-12-20 08:06:44,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 08:06:44,915 INFO L225 Difference]: With dead ends: 130 [2023-12-20 08:06:44,915 INFO L226 Difference]: Without dead ends: 96 [2023-12-20 08:06:44,916 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=273, Invalid=429, Unknown=0, NotChecked=0, Total=702 [2023-12-20 08:06:44,916 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 159 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 08:06:44,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 25 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 08:06:44,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2023-12-20 08:06:44,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2023-12-20 08:06:44,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 95 states have (on average 1.2736842105263158) internal successors, (121), 95 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:06:44,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 121 transitions. [2023-12-20 08:06:44,926 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 121 transitions. Word has length 38 [2023-12-20 08:06:44,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 08:06:44,926 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 121 transitions. [2023-12-20 08:06:44,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 14 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:06:44,926 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 121 transitions. [2023-12-20 08:06:44,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-20 08:06:44,928 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 08:06:44,928 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 7, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 08:06:44,937 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-20 08:06:45,133 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,SelfDestructingSolverStorable3 [2023-12-20 08:06:45,134 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 08:06:45,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 08:06:45,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1198075282, now seen corresponding path program 2 times [2023-12-20 08:06:45,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 08:06:45,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047306372] [2023-12-20 08:06:45,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 08:06:45,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 08:06:45,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 08:06:45,493 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-20 08:06:45,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 08:06:45,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047306372] [2023-12-20 08:06:45,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047306372] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 08:06:45,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [991224453] [2023-12-20 08:06:45,493 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-20 08:06:45,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 08:06:45,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 08:06:45,514 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) [2023-12-20 08:06:45,560 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-20 08:06:45,727 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-20 08:06:45,727 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 08:06:45,730 INFO L262 TraceCheckSpWp]: Trace formula consists of 571 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-20 08:06:45,734 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 08:06:45,777 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-20 08:06:45,777 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 08:06:45,991 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-12-20 08:06:45,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [991224453] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 08:06:45,992 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 08:06:45,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 28 [2023-12-20 08:06:45,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365875683] [2023-12-20 08:06:45,993 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 08:06:45,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-20 08:06:45,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 08:06:45,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-20 08:06:45,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2023-12-20 08:06:45,996 INFO L87 Difference]: Start difference. First operand 96 states and 121 transitions. Second operand has 29 states, 29 states have (on average 1.5517241379310345) internal successors, (45), 28 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:06:46,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 08:06:46,343 INFO L93 Difference]: Finished difference Result 866 states and 1155 transitions. [2023-12-20 08:06:46,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-20 08:06:46,345 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.5517241379310345) internal successors, (45), 28 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2023-12-20 08:06:46,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 08:06:46,348 INFO L225 Difference]: With dead ends: 866 [2023-12-20 08:06:46,348 INFO L226 Difference]: Without dead ends: 784 [2023-12-20 08:06:46,348 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2023-12-20 08:06:46,349 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 496 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-20 08:06:46,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 25 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [199 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-20 08:06:46,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 784 states. [2023-12-20 08:06:46,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 784 to 194. [2023-12-20 08:06:46,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 193 states have (on average 1.2797927461139897) internal successors, (247), 193 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:06:46,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 247 transitions. [2023-12-20 08:06:46,370 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 247 transitions. Word has length 94 [2023-12-20 08:06:46,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 08:06:46,370 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 247 transitions. [2023-12-20 08:06:46,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.5517241379310345) internal successors, (45), 28 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:06:46,370 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 247 transitions. [2023-12-20 08:06:46,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2023-12-20 08:06:46,372 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 08:06:46,372 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 26, 26, 26, 19, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 08:06:46,416 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-20 08:06:46,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 08:06:46,576 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 08:06:46,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 08:06:46,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1305497138, now seen corresponding path program 3 times [2023-12-20 08:06:46,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 08:06:46,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279812278] [2023-12-20 08:06:46,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 08:06:46,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 08:06:46,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 08:06:47,705 INFO L134 CoverageAnalysis]: Checked inductivity of 2353 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 2002 trivial. 0 not checked. [2023-12-20 08:06:47,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 08:06:47,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279812278] [2023-12-20 08:06:47,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279812278] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 08:06:47,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2009016903] [2023-12-20 08:06:47,706 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-20 08:06:47,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 08:06:47,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 08:06:47,707 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) [2023-12-20 08:06:47,731 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-20 08:06:49,360 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-12-20 08:06:49,360 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 08:06:49,365 INFO L262 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-20 08:06:49,368 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 08:06:49,538 INFO L134 CoverageAnalysis]: Checked inductivity of 2353 backedges. 123 proven. 2 refuted. 0 times theorem prover too weak. 2228 trivial. 0 not checked. [2023-12-20 08:06:49,539 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 08:06:49,696 INFO L134 CoverageAnalysis]: Checked inductivity of 2353 backedges. 123 proven. 2 refuted. 0 times theorem prover too weak. 2228 trivial. 0 not checked. [2023-12-20 08:06:49,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2009016903] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 08:06:49,697 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 08:06:49,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 4, 4] total 34 [2023-12-20 08:06:49,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220424238] [2023-12-20 08:06:49,697 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 08:06:49,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-12-20 08:06:49,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 08:06:49,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-12-20 08:06:49,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=481, Invalid=709, Unknown=0, NotChecked=0, Total=1190 [2023-12-20 08:06:49,699 INFO L87 Difference]: Start difference. First operand 194 states and 247 transitions. Second operand has 35 states, 35 states have (on average 2.0285714285714285) internal successors, (71), 34 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:06:50,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 08:06:50,495 INFO L93 Difference]: Finished difference Result 435 states and 567 transitions. [2023-12-20 08:06:50,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-12-20 08:06:50,496 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.0285714285714285) internal successors, (71), 34 states have internal predecessors, (71), 0 states have call successors, (0), 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 192 [2023-12-20 08:06:50,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 08:06:50,497 INFO L225 Difference]: With dead ends: 435 [2023-12-20 08:06:50,497 INFO L226 Difference]: Without dead ends: 269 [2023-12-20 08:06:50,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 438 GetRequests, 377 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 674 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1434, Invalid=2472, Unknown=0, NotChecked=0, Total=3906 [2023-12-20 08:06:50,499 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 690 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 319 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 690 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 319 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-20 08:06:50,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [690 Valid, 32 Invalid, 573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [319 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-20 08:06:50,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2023-12-20 08:06:50,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 249. [2023-12-20 08:06:50,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 248 states have (on average 1.0806451612903225) internal successors, (268), 248 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:06:50,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 268 transitions. [2023-12-20 08:06:50,511 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 268 transitions. Word has length 192 [2023-12-20 08:06:50,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 08:06:50,512 INFO L495 AbstractCegarLoop]: Abstraction has 249 states and 268 transitions. [2023-12-20 08:06:50,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.0285714285714285) internal successors, (71), 34 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:06:50,512 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 268 transitions. [2023-12-20 08:06:50,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2023-12-20 08:06:50,513 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 08:06:50,513 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 08:06:50,523 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-20 08:06:50,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 08:06:50,721 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 08:06:50,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 08:06:50,722 INFO L85 PathProgramCache]: Analyzing trace with hash -1316299647, now seen corresponding path program 1 times [2023-12-20 08:06:50,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 08:06:50,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701884509] [2023-12-20 08:06:50,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 08:06:50,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 08:06:50,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 08:06:51,770 INFO L134 CoverageAnalysis]: Checked inductivity of 2538 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 2160 trivial. 0 not checked. [2023-12-20 08:06:51,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 08:06:51,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701884509] [2023-12-20 08:06:51,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701884509] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 08:06:51,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [120650857] [2023-12-20 08:06:51,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 08:06:51,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 08:06:51,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 08:06:51,772 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) [2023-12-20 08:06:51,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-20 08:06:52,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 08:06:52,062 INFO L262 TraceCheckSpWp]: Trace formula consists of 1181 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-20 08:06:52,066 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 08:06:52,113 INFO L134 CoverageAnalysis]: Checked inductivity of 2538 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 2160 trivial. 0 not checked. [2023-12-20 08:06:52,113 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 08:06:52,937 INFO L134 CoverageAnalysis]: Checked inductivity of 2538 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 2160 trivial. 0 not checked. [2023-12-20 08:06:52,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [120650857] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 08:06:52,937 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 08:06:52,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 58 [2023-12-20 08:06:52,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907470505] [2023-12-20 08:06:52,937 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 08:06:52,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2023-12-20 08:06:52,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 08:06:52,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2023-12-20 08:06:52,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2023-12-20 08:06:52,940 INFO L87 Difference]: Start difference. First operand 249 states and 268 transitions. Second operand has 59 states, 59 states have (on average 1.2542372881355932) internal successors, (74), 58 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:06:53,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 08:06:53,784 INFO L93 Difference]: Finished difference Result 1452 states and 1854 transitions. [2023-12-20 08:06:53,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2023-12-20 08:06:53,784 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 1.2542372881355932) internal successors, (74), 58 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 199 [2023-12-20 08:06:53,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 08:06:53,788 INFO L225 Difference]: With dead ends: 1452 [2023-12-20 08:06:53,788 INFO L226 Difference]: Without dead ends: 1232 [2023-12-20 08:06:53,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 425 GetRequests, 368 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2023-12-20 08:06:53,790 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 1102 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 486 mSolverCounterSat, 521 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1102 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 1007 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 521 IncrementalHoareTripleChecker+Valid, 486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-20 08:06:53,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1102 Valid, 30 Invalid, 1007 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [521 Valid, 486 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-20 08:06:53,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1232 states. [2023-12-20 08:06:53,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1232 to 404. [2023-12-20 08:06:53,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 403 states have (on average 1.1439205955334988) internal successors, (461), 403 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:06:53,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 461 transitions. [2023-12-20 08:06:53,845 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 461 transitions. Word has length 199 [2023-12-20 08:06:53,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 08:06:53,845 INFO L495 AbstractCegarLoop]: Abstraction has 404 states and 461 transitions. [2023-12-20 08:06:53,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 1.2542372881355932) internal successors, (74), 58 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:06:53,846 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 461 transitions. [2023-12-20 08:06:53,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2023-12-20 08:06:53,849 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 08:06:53,849 INFO L195 NwaCegarLoop]: trace histogram [56, 56, 56, 56, 56, 56, 35, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 08:06:53,868 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-20 08:06:54,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 08:06:54,057 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 08:06:54,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 08:06:54,058 INFO L85 PathProgramCache]: Analyzing trace with hash 678781102, now seen corresponding path program 4 times [2023-12-20 08:06:54,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 08:06:54,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357016546] [2023-12-20 08:06:54,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 08:06:54,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 08:06:54,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 08:06:57,573 INFO L134 CoverageAnalysis]: Checked inductivity of 10948 backedges. 0 proven. 1596 refuted. 0 times theorem prover too weak. 9352 trivial. 0 not checked. [2023-12-20 08:06:57,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 08:06:57,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357016546] [2023-12-20 08:06:57,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357016546] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 08:06:57,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1374965899] [2023-12-20 08:06:57,574 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-20 08:06:57,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 08:06:57,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 08:06:57,583 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) [2023-12-20 08:06:57,586 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-20 08:06:57,976 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-20 08:06:57,976 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 08:06:57,982 INFO L262 TraceCheckSpWp]: Trace formula consists of 1040 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-20 08:06:57,987 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 08:06:58,059 INFO L134 CoverageAnalysis]: Checked inductivity of 10948 backedges. 2450 proven. 0 refuted. 0 times theorem prover too weak. 8498 trivial. 0 not checked. [2023-12-20 08:06:58,059 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 08:06:58,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1374965899] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 08:06:58,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 08:06:58,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [58] total 61 [2023-12-20 08:06:58,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519052646] [2023-12-20 08:06:58,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 08:06:58,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 08:06:58,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 08:06:58,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 08:06:58,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1716, Invalid=1944, Unknown=0, NotChecked=0, Total=3660 [2023-12-20 08:06:58,061 INFO L87 Difference]: Start difference. First operand 404 states and 461 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:06:58,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 08:06:58,128 INFO L93 Difference]: Finished difference Result 864 states and 1029 transitions. [2023-12-20 08:06:58,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 08:06:58,129 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 402 [2023-12-20 08:06:58,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 08:06:58,133 INFO L225 Difference]: With dead ends: 864 [2023-12-20 08:06:58,133 INFO L226 Difference]: Without dead ends: 611 [2023-12-20 08:06:58,134 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 459 GetRequests, 400 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1716, Invalid=1944, Unknown=0, NotChecked=0, Total=3660 [2023-12-20 08:06:58,135 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 11 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 08:06:58,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 28 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 08:06:58,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2023-12-20 08:06:58,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 564. [2023-12-20 08:06:58,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 563 states have (on average 1.1065719360568385) internal successors, (623), 563 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:06:58,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 623 transitions. [2023-12-20 08:06:58,205 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 623 transitions. Word has length 402 [2023-12-20 08:06:58,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 08:06:58,206 INFO L495 AbstractCegarLoop]: Abstraction has 564 states and 623 transitions. [2023-12-20 08:06:58,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:06:58,206 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 623 transitions. [2023-12-20 08:06:58,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2023-12-20 08:06:58,209 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 08:06:58,210 INFO L195 NwaCegarLoop]: trace histogram [56, 56, 56, 56, 56, 56, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 08:06:58,219 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-20 08:06:58,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 08:06:58,417 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 08:06:58,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 08:06:58,417 INFO L85 PathProgramCache]: Analyzing trace with hash -1489954514, now seen corresponding path program 5 times [2023-12-20 08:06:58,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 08:06:58,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400070363] [2023-12-20 08:06:58,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 08:06:58,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 08:06:58,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 08:07:01,423 INFO L134 CoverageAnalysis]: Checked inductivity of 10948 backedges. 0 proven. 1596 refuted. 0 times theorem prover too weak. 9352 trivial. 0 not checked. [2023-12-20 08:07:01,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 08:07:01,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400070363] [2023-12-20 08:07:01,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400070363] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 08:07:01,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1863604401] [2023-12-20 08:07:01,424 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-20 08:07:01,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 08:07:01,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 08:07:01,426 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 08:07:01,449 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process Received shutdown request... [2023-12-20 08:21:22,829 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 [2023-12-20 08:21:22,872 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-20 08:21:23,838 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 [2023-12-20 08:21:24,073 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forcibly destroying the process [2023-12-20 08:21:24,122 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 08:21:24,122 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-20 08:21:24,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58] total 58 [2023-12-20 08:21:24,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229968420] [2023-12-20 08:21:24,122 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-20 08:21:24,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2023-12-20 08:21:24,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 08:21:24,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2023-12-20 08:21:24,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2023-12-20 08:21:24,124 INFO L87 Difference]: Start difference. First operand 564 states and 623 transitions. Second operand has 59 states, 59 states have (on average 1.2372881355932204) internal successors, (73), 58 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 08:21:24,127 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 137 [2023-12-20 08:21:24,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-20 08:21:24,129 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2023-12-20 08:21:24,131 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 [2023-12-20 08:21:24,131 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] [2023-12-20 08:21:24,139 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-20 08:21:24,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-20 08:21:24,152 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (564states) and FLOYD_HOARE automaton (currently 2 states, 59 states before enhancement),while ReachableStatesComputation was computing reachable states (1 states constructed, input type IntersectNwa). [2023-12-20 08:21:24,156 INFO L445 BasicCegarLoop]: Path program histogram: [5, 2, 1, 1] [2023-12-20 08:21:24,158 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-20 08:21:24,161 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.12 08:21:24 BoogieIcfgContainer [2023-12-20 08:21:24,161 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-20 08:21:24,161 INFO L158 Benchmark]: Toolchain (without parser) took 881467.08ms. Allocated memory was 285.2MB in the beginning and 795.9MB in the end (delta: 510.7MB). Free memory was 235.1MB in the beginning and 448.2MB in the end (delta: -213.1MB). Peak memory consumption was 297.9MB. Max. memory is 8.0GB. [2023-12-20 08:21:24,161 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 211.8MB. Free memory is still 164.7MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-20 08:21:24,162 INFO L158 Benchmark]: CACSL2BoogieTranslator took 169.46ms. Allocated memory is still 285.2MB. Free memory was 234.8MB in the beginning and 223.6MB in the end (delta: 11.2MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-20 08:21:24,162 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.04ms. Allocated memory is still 285.2MB. Free memory was 223.6MB in the beginning and 222.1MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-20 08:21:24,162 INFO L158 Benchmark]: Boogie Preprocessor took 36.20ms. Allocated memory is still 285.2MB. Free memory was 222.1MB in the beginning and 219.8MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-20 08:21:24,162 INFO L158 Benchmark]: RCFGBuilder took 243.86ms. Allocated memory is still 285.2MB. Free memory was 219.8MB in the beginning and 206.0MB in the end (delta: 13.8MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-12-20 08:21:24,162 INFO L158 Benchmark]: TraceAbstraction took 880982.66ms. Allocated memory was 285.2MB in the beginning and 795.9MB in the end (delta: 510.7MB). Free memory was 205.1MB in the beginning and 448.2MB in the end (delta: -243.0MB). Peak memory consumption was 268.6MB. Max. memory is 8.0GB. [2023-12-20 08:21:24,175 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 211.8MB. Free memory is still 164.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 169.46ms. Allocated memory is still 285.2MB. Free memory was 234.8MB in the beginning and 223.6MB in the end (delta: 11.2MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 30.04ms. Allocated memory is still 285.2MB. Free memory was 223.6MB in the beginning and 222.1MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 36.20ms. Allocated memory is still 285.2MB. Free memory was 222.1MB in the beginning and 219.8MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 243.86ms. Allocated memory is still 285.2MB. Free memory was 219.8MB in the beginning and 206.0MB in the end (delta: 13.8MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 880982.66ms. Allocated memory was 285.2MB in the beginning and 795.9MB in the end (delta: 510.7MB). Free memory was 205.1MB in the beginning and 448.2MB in the end (delta: -243.0MB). Peak memory consumption was 268.6MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 13]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 13). Cancelled while NwaCegarLoop was constructing difference of abstraction (564states) and FLOYD_HOARE automaton (currently 2 states, 59 states before enhancement),while ReachableStatesComputation was computing reachable states (1 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 880.9s, OverallIterations: 9, TraceHistogramMax: 56, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 2.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2517 SdHoareTripleChecker+Valid, 1.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2517 mSDsluCounter, 192 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 106 mSDsCounter, 1150 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1266 IncrementalHoareTripleChecker+Invalid, 2416 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1150 mSolverCounterUnsat, 86 mSDtfsCounter, 1266 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1711 GetRequests, 1417 SyntacticMatches, 0 SemanticMatches, 294 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1108 ImplicationChecksByTransitivity, 4.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=564occurred in iteration=8, InterpolantAutomatonStates: 150, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 8 MinimizatonAttempts, 1489 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 2.2s SatisfiabilityAnalysisTime, 10.5s InterpolantComputationTime, 2334 NumberOfCodeBlocks, 2019 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 2854 ConstructedInterpolants, 0 QuantifiedInterpolants, 4022 SizeOfPredicates, 2 NumberOfNonLiveVariables, 3534 ConjunctsInSsa, 59 ConjunctsInUnsatCore, 20 InterpolantComputations, 3 PerfectInterpolantSequences, 44291/49236 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