/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/array-examples/standard_reverse_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-18 17:17:58,778 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-18 17:17:58,834 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-18 17:17:58,838 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-18 17:17:58,838 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-18 17:17:58,863 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-18 17:17:58,863 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-18 17:17:58,864 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-18 17:17:58,868 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-18 17:17:58,868 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-18 17:17:58,868 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-18 17:17:58,869 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-18 17:17:58,869 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-18 17:17:58,869 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-18 17:17:58,869 INFO L153 SettingsManager]: * Use SBE=true [2023-12-18 17:17:58,870 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-18 17:17:58,871 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-18 17:17:58,871 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-18 17:17:58,872 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-18 17:17:58,872 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-18 17:17:58,872 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-18 17:17:58,873 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-18 17:17:58,873 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-18 17:17:58,874 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-18 17:17:58,874 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-18 17:17:58,874 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-18 17:17:58,874 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-18 17:17:58,874 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-18 17:17:58,875 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-18 17:17:58,875 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-18 17:17:58,875 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-18 17:17:58,875 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-18 17:17:58,876 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-18 17:17:58,876 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-18 17:17:58,876 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-18 17:17:58,876 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-18 17:17:58,876 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-18 17:17:58,876 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-18 17:17:58,876 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-18 17:17:58,876 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-18 17:17:58,877 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-18 17:17:58,877 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-18 17:17:58,877 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-18 17:17:58,877 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-18 17:17:59,046 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-18 17:17:59,063 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-18 17:17:59,064 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-18 17:17:59,065 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-18 17:17:59,065 INFO L274 PluginConnector]: CDTParser initialized [2023-12-18 17:17:59,066 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_reverse_ground.i [2023-12-18 17:17:59,978 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-18 17:18:00,128 INFO L384 CDTParser]: Found 1 translation units. [2023-12-18 17:18:00,129 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_reverse_ground.i [2023-12-18 17:18:00,135 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b61291cc/765bed9c27cf4363a5c570a83a4c8465/FLAGbe210d0c9 [2023-12-18 17:18:00,148 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b61291cc/765bed9c27cf4363a5c570a83a4c8465 [2023-12-18 17:18:00,150 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-18 17:18:00,151 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-18 17:18:00,153 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-18 17:18:00,153 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-18 17:18:00,157 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-18 17:18:00,158 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 05:18:00" (1/1) ... [2023-12-18 17:18:00,159 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@508cc9dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 05:18:00, skipping insertion in model container [2023-12-18 17:18:00,159 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 05:18:00" (1/1) ... [2023-12-18 17:18:00,177 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-18 17:18:00,280 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_reverse_ground.i[816,829] [2023-12-18 17:18:00,294 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-18 17:18:00,300 INFO L202 MainTranslator]: Completed pre-run [2023-12-18 17:18:00,308 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_reverse_ground.i[816,829] [2023-12-18 17:18:00,312 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-18 17:18:00,320 INFO L206 MainTranslator]: Completed translation [2023-12-18 17:18:00,321 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 05:18:00 WrapperNode [2023-12-18 17:18:00,321 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-18 17:18:00,322 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-18 17:18:00,322 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-18 17:18:00,322 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-18 17:18:00,328 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 05:18:00" (1/1) ... [2023-12-18 17:18:00,333 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 05:18:00" (1/1) ... [2023-12-18 17:18:00,343 INFO L138 Inliner]: procedures = 16, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 63 [2023-12-18 17:18:00,344 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-18 17:18:00,344 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-18 17:18:00,344 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-18 17:18:00,344 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-18 17:18:00,351 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 05:18:00" (1/1) ... [2023-12-18 17:18:00,351 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 05:18:00" (1/1) ... [2023-12-18 17:18:00,352 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 05:18:00" (1/1) ... [2023-12-18 17:18:00,361 INFO L175 MemorySlicer]: Split 7 memory accesses to 3 slices as follows [2, 3, 2]. 43 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2023-12-18 17:18:00,361 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 05:18:00" (1/1) ... [2023-12-18 17:18:00,361 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 05:18:00" (1/1) ... [2023-12-18 17:18:00,364 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 05:18:00" (1/1) ... [2023-12-18 17:18:00,373 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 05:18:00" (1/1) ... [2023-12-18 17:18:00,374 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 05:18:00" (1/1) ... [2023-12-18 17:18:00,375 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 05:18:00" (1/1) ... [2023-12-18 17:18:00,376 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-18 17:18:00,376 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-18 17:18:00,377 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-18 17:18:00,377 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-18 17:18:00,377 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 05:18:00" (1/1) ... [2023-12-18 17:18:00,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-18 17:18:00,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 17:18:00,398 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) [2023-12-18 17:18:00,401 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 [2023-12-18 17:18:00,418 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-18 17:18:00,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-18 17:18:00,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-18 17:18:00,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-12-18 17:18:00,419 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-18 17:18:00,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-12-18 17:18:00,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-12-18 17:18:00,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-12-18 17:18:00,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-18 17:18:00,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-18 17:18:00,421 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-12-18 17:18:00,421 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-12-18 17:18:00,421 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-12-18 17:18:00,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-18 17:18:00,471 INFO L241 CfgBuilder]: Building ICFG [2023-12-18 17:18:00,472 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-18 17:18:00,549 INFO L282 CfgBuilder]: Performing block encoding [2023-12-18 17:18:00,570 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-18 17:18:00,570 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-12-18 17:18:00,571 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 05:18:00 BoogieIcfgContainer [2023-12-18 17:18:00,571 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-18 17:18:00,572 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-18 17:18:00,572 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-18 17:18:00,574 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-18 17:18:00,574 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 05:18:00" (1/3) ... [2023-12-18 17:18:00,575 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d7334ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 05:18:00, skipping insertion in model container [2023-12-18 17:18:00,575 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 05:18:00" (2/3) ... [2023-12-18 17:18:00,575 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d7334ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 05:18:00, skipping insertion in model container [2023-12-18 17:18:00,575 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 05:18:00" (3/3) ... [2023-12-18 17:18:00,576 INFO L112 eAbstractionObserver]: Analyzing ICFG standard_reverse_ground.i [2023-12-18 17:18:00,587 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-18 17:18:00,587 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-18 17:18:00,620 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-18 17:18:00,624 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;@4d0b11b2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-18 17:18:00,624 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-18 17:18:00,627 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.8) internal successors, (18), 11 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 17:18:00,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-12-18 17:18:00,630 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 17:18:00,631 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 17:18:00,631 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 17:18:00,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 17:18:00,634 INFO L85 PathProgramCache]: Analyzing trace with hash 414171164, now seen corresponding path program 1 times [2023-12-18 17:18:00,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 17:18:00,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540074243] [2023-12-18 17:18:00,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 17:18:00,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 17:18:00,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 17:18:00,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 17:18:00,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 17:18:00,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540074243] [2023-12-18 17:18:00,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540074243] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 17:18:00,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 17:18:00,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-18 17:18:00,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699903131] [2023-12-18 17:18:00,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 17:18:00,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 17:18:00,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 17:18:00,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 17:18:00,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 17:18:00,819 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.8) internal successors, (18), 11 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 17:18:00,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 17:18:00,857 INFO L93 Difference]: Finished difference Result 24 states and 38 transitions. [2023-12-18 17:18:00,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 17:18:00,859 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-12-18 17:18:00,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 17:18:00,863 INFO L225 Difference]: With dead ends: 24 [2023-12-18 17:18:00,864 INFO L226 Difference]: Without dead ends: 12 [2023-12-18 17:18:00,865 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 [2023-12-18 17:18:00,867 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 17:18:00,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 15 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 17:18:00,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2023-12-18 17:18:00,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2023-12-18 17:18:00,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 17:18:00,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2023-12-18 17:18:00,886 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 8 [2023-12-18 17:18:00,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 17:18:00,886 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2023-12-18 17:18:00,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 17:18:00,886 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2023-12-18 17:18:00,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-18 17:18:00,887 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 17:18:00,887 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 17:18:00,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-18 17:18:00,887 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 17:18:00,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 17:18:00,888 INFO L85 PathProgramCache]: Analyzing trace with hash 983251984, now seen corresponding path program 1 times [2023-12-18 17:18:00,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 17:18:00,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045380685] [2023-12-18 17:18:00,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 17:18:00,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 17:18:00,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 17:18:00,968 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-18 17:18:00,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 17:18:00,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045380685] [2023-12-18 17:18:00,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045380685] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 17:18:00,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1991563567] [2023-12-18 17:18:00,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 17:18:00,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 17:18:00,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 17:18:00,975 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) [2023-12-18 17:18:00,979 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-18 17:18:01,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 17:18:01,041 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-18 17:18:01,043 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 17:18:01,068 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-18 17:18:01,069 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 17:18:01,093 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-18 17:18:01,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1991563567] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 17:18:01,095 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 17:18:01,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-12-18 17:18:01,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828000374] [2023-12-18 17:18:01,096 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 17:18:01,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 17:18:01,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 17:18:01,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 17:18:01,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-12-18 17:18:01,097 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 17:18:01,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 17:18:01,130 INFO L93 Difference]: Finished difference Result 27 states and 36 transitions. [2023-12-18 17:18:01,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-18 17:18:01,131 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-12-18 17:18:01,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 17:18:01,131 INFO L225 Difference]: With dead ends: 27 [2023-12-18 17:18:01,131 INFO L226 Difference]: Without dead ends: 18 [2023-12-18 17:18:01,132 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-12-18 17:18:01,132 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 0 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 17:18:01,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 18 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 17:18:01,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2023-12-18 17:18:01,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2023-12-18 17:18:01,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 17:18:01,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2023-12-18 17:18:01,136 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 10 [2023-12-18 17:18:01,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 17:18:01,136 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2023-12-18 17:18:01,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 17:18:01,136 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2023-12-18 17:18:01,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-18 17:18:01,136 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 17:18:01,136 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 17:18:01,142 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-18 17:18:01,338 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 [2023-12-18 17:18:01,338 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 17:18:01,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 17:18:01,339 INFO L85 PathProgramCache]: Analyzing trace with hash -111201892, now seen corresponding path program 2 times [2023-12-18 17:18:01,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 17:18:01,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248679880] [2023-12-18 17:18:01,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 17:18:01,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 17:18:01,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 17:18:01,464 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-18 17:18:01,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 17:18:01,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248679880] [2023-12-18 17:18:01,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248679880] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 17:18:01,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [333555591] [2023-12-18 17:18:01,465 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-18 17:18:01,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 17:18:01,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 17:18:01,467 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) [2023-12-18 17:18:01,472 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-18 17:18:01,537 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-18 17:18:01,537 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 17:18:01,539 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-18 17:18:01,540 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 17:18:01,561 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-18 17:18:01,561 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 17:18:01,621 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-18 17:18:01,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [333555591] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 17:18:01,622 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 17:18:01,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-12-18 17:18:01,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692364977] [2023-12-18 17:18:01,622 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 17:18:01,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-18 17:18:01,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 17:18:01,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-18 17:18:01,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-12-18 17:18:01,626 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand has 13 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 12 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 17:18:01,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 17:18:01,684 INFO L93 Difference]: Finished difference Result 42 states and 57 transitions. [2023-12-18 17:18:01,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-18 17:18:01,684 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 12 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-12-18 17:18:01,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 17:18:01,685 INFO L225 Difference]: With dead ends: 42 [2023-12-18 17:18:01,685 INFO L226 Difference]: Without dead ends: 30 [2023-12-18 17:18:01,686 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-12-18 17:18:01,689 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 0 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 17:18:01,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 17:18:01,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2023-12-18 17:18:01,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2023-12-18 17:18:01,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.103448275862069) internal successors, (32), 29 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 17:18:01,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2023-12-18 17:18:01,702 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 16 [2023-12-18 17:18:01,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 17:18:01,702 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2023-12-18 17:18:01,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 12 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 17:18:01,702 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2023-12-18 17:18:01,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-12-18 17:18:01,703 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 17:18:01,704 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 17:18:01,723 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-18 17:18:01,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-12-18 17:18:01,916 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 17:18:01,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 17:18:01,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1932837924, now seen corresponding path program 3 times [2023-12-18 17:18:01,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 17:18:01,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317289323] [2023-12-18 17:18:01,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 17:18:01,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 17:18:01,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 17:18:02,185 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-12-18 17:18:02,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 17:18:02,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317289323] [2023-12-18 17:18:02,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317289323] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 17:18:02,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [203528642] [2023-12-18 17:18:02,189 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-18 17:18:02,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 17:18:02,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 17:18:02,192 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) [2023-12-18 17:18:02,212 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-18 17:18:02,261 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-18 17:18:02,261 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 17:18:02,262 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-18 17:18:02,264 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 17:18:02,386 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2023-12-18 17:18:02,482 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-12-18 17:18:02,482 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-18 17:18:02,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [203528642] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 17:18:02,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-18 17:18:02,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [12] total 17 [2023-12-18 17:18:02,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575395956] [2023-12-18 17:18:02,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 17:18:02,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 17:18:02,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 17:18:02,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 17:18:02,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=214, Unknown=0, NotChecked=0, Total=306 [2023-12-18 17:18:02,484 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 17:18:02,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 17:18:02,593 INFO L93 Difference]: Finished difference Result 35 states and 37 transitions. [2023-12-18 17:18:02,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-18 17:18:02,594 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 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 28 [2023-12-18 17:18:02,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 17:18:02,594 INFO L225 Difference]: With dead ends: 35 [2023-12-18 17:18:02,594 INFO L226 Difference]: Without dead ends: 33 [2023-12-18 17:18:02,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2023-12-18 17:18:02,595 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 29 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 17:18:02,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 14 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 17:18:02,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-12-18 17:18:02,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2023-12-18 17:18:02,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.096774193548387) internal successors, (34), 31 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 17:18:02,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2023-12-18 17:18:02,601 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 28 [2023-12-18 17:18:02,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 17:18:02,601 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2023-12-18 17:18:02,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 17:18:02,601 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2023-12-18 17:18:02,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-12-18 17:18:02,602 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 17:18:02,602 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 17:18:02,618 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-18 17:18:02,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 17:18:02,810 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 17:18:02,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 17:18:02,811 INFO L85 PathProgramCache]: Analyzing trace with hash 1457045890, now seen corresponding path program 1 times [2023-12-18 17:18:02,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 17:18:02,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846107567] [2023-12-18 17:18:02,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 17:18:02,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 17:18:02,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 17:18:02,959 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-12-18 17:18:02,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 17:18:02,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846107567] [2023-12-18 17:18:02,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846107567] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 17:18:02,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [773469680] [2023-12-18 17:18:02,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 17:18:02,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 17:18:02,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 17:18:02,961 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) [2023-12-18 17:18:02,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-18 17:18:03,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 17:18:03,049 INFO L262 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-18 17:18:03,050 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 17:18:03,074 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-12-18 17:18:03,074 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 17:18:03,215 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-12-18 17:18:03,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [773469680] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 17:18:03,215 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 17:18:03,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2023-12-18 17:18:03,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466351696] [2023-12-18 17:18:03,215 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 17:18:03,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-18 17:18:03,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 17:18:03,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-18 17:18:03,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2023-12-18 17:18:03,217 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand has 25 states, 25 states have (on average 1.4) internal successors, (35), 24 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 17:18:03,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 17:18:03,305 INFO L93 Difference]: Finished difference Result 76 states and 103 transitions. [2023-12-18 17:18:03,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-18 17:18:03,306 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.4) internal successors, (35), 24 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2023-12-18 17:18:03,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 17:18:03,306 INFO L225 Difference]: With dead ends: 76 [2023-12-18 17:18:03,306 INFO L226 Difference]: Without dead ends: 56 [2023-12-18 17:18:03,307 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2023-12-18 17:18:03,307 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 0 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-18 17:18:03,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 23 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-18 17:18:03,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2023-12-18 17:18:03,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2023-12-18 17:18:03,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.0545454545454545) internal successors, (58), 55 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 17:18:03,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 58 transitions. [2023-12-18 17:18:03,316 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 58 transitions. Word has length 31 [2023-12-18 17:18:03,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 17:18:03,316 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 58 transitions. [2023-12-18 17:18:03,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.4) internal successors, (35), 24 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 17:18:03,317 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 58 transitions. [2023-12-18 17:18:03,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-18 17:18:03,317 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 17:18:03,317 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 17:18:03,326 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-18 17:18:03,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 17:18:03,520 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 17:18:03,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 17:18:03,521 INFO L85 PathProgramCache]: Analyzing trace with hash -714236670, now seen corresponding path program 2 times [2023-12-18 17:18:03,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 17:18:03,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057218386] [2023-12-18 17:18:03,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 17:18:03,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 17:18:03,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 17:18:04,005 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2023-12-18 17:18:04,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 17:18:04,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057218386] [2023-12-18 17:18:04,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057218386] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 17:18:04,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1593045052] [2023-12-18 17:18:04,006 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-18 17:18:04,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 17:18:04,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 17:18:04,007 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) [2023-12-18 17:18:04,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-18 17:18:04,129 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-18 17:18:04,129 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 17:18:04,131 INFO L262 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-18 17:18:04,134 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 17:18:04,168 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2023-12-18 17:18:04,168 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 17:18:04,752 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2023-12-18 17:18:04,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1593045052] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 17:18:04,752 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 17:18:04,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 48 [2023-12-18 17:18:04,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733609651] [2023-12-18 17:18:04,752 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 17:18:04,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-12-18 17:18:04,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 17:18:04,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-12-18 17:18:04,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2023-12-18 17:18:04,754 INFO L87 Difference]: Start difference. First operand 56 states and 58 transitions. Second operand has 49 states, 49 states have (on average 1.2040816326530612) internal successors, (59), 48 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 17:18:04,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 17:18:04,914 INFO L93 Difference]: Finished difference Result 136 states and 187 transitions. [2023-12-18 17:18:04,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-12-18 17:18:04,915 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.2040816326530612) internal successors, (59), 48 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2023-12-18 17:18:04,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 17:18:04,915 INFO L225 Difference]: With dead ends: 136 [2023-12-18 17:18:04,915 INFO L226 Difference]: Without dead ends: 104 [2023-12-18 17:18:04,916 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2023-12-18 17:18:04,917 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 0 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-18 17:18:04,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 38 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-18 17:18:04,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2023-12-18 17:18:04,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2023-12-18 17:18:04,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 1.029126213592233) internal successors, (106), 103 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 17:18:04,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 106 transitions. [2023-12-18 17:18:04,929 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 106 transitions. Word has length 55 [2023-12-18 17:18:04,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 17:18:04,929 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 106 transitions. [2023-12-18 17:18:04,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.2040816326530612) internal successors, (59), 48 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 17:18:04,929 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 106 transitions. [2023-12-18 17:18:04,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-18 17:18:04,930 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 17:18:04,930 INFO L195 NwaCegarLoop]: trace histogram [46, 46, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 17:18:04,938 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-18 17:18:05,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 17:18:05,136 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 17:18:05,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 17:18:05,136 INFO L85 PathProgramCache]: Analyzing trace with hash -475769854, now seen corresponding path program 3 times [2023-12-18 17:18:05,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 17:18:05,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223597695] [2023-12-18 17:18:05,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 17:18:05,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 17:18:05,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 17:18:06,876 INFO L134 CoverageAnalysis]: Checked inductivity of 2164 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 1083 trivial. 0 not checked. [2023-12-18 17:18:06,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 17:18:06,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223597695] [2023-12-18 17:18:06,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223597695] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 17:18:06,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1063443191] [2023-12-18 17:18:06,877 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-18 17:18:06,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 17:18:06,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 17:18:06,878 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) [2023-12-18 17:18:06,896 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-18 17:18:07,013 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-12-18 17:18:07,013 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 17:18:07,015 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-18 17:18:07,024 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 17:18:07,117 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2023-12-18 17:18:07,158 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 43 [2023-12-18 17:18:07,390 INFO L134 CoverageAnalysis]: Checked inductivity of 2164 backedges. 90 proven. 3 refuted. 0 times theorem prover too weak. 2071 trivial. 0 not checked. [2023-12-18 17:18:07,390 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 17:18:07,599 INFO L134 CoverageAnalysis]: Checked inductivity of 2164 backedges. 90 proven. 3 refuted. 0 times theorem prover too weak. 2071 trivial. 0 not checked. [2023-12-18 17:18:07,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1063443191] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 17:18:07,600 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 17:18:07,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 8, 8] total 62 [2023-12-18 17:18:07,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545477170] [2023-12-18 17:18:07,600 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 17:18:07,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2023-12-18 17:18:07,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 17:18:07,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2023-12-18 17:18:07,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1321, Invalid=2461, Unknown=0, NotChecked=0, Total=3782 [2023-12-18 17:18:07,606 INFO L87 Difference]: Start difference. First operand 104 states and 106 transitions. Second operand has 62 states, 62 states have (on average 1.3709677419354838) internal successors, (85), 62 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 17:18:15,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 17:18:15,446 INFO L93 Difference]: Finished difference Result 217 states and 227 transitions. [2023-12-18 17:18:15,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 155 states. [2023-12-18 17:18:15,446 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 1.3709677419354838) internal successors, (85), 62 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2023-12-18 17:18:15,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 17:18:15,449 INFO L225 Difference]: With dead ends: 217 [2023-12-18 17:18:15,449 INFO L226 Difference]: Without dead ends: 161 [2023-12-18 17:18:15,464 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11879 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=12672, Invalid=32910, Unknown=0, NotChecked=0, Total=45582 [2023-12-18 17:18:15,465 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 49 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 340 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 340 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-18 17:18:15,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 32 Invalid, 548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [340 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-18 17:18:15,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2023-12-18 17:18:15,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 109. [2023-12-18 17:18:15,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 108 states have (on average 1.0277777777777777) internal successors, (111), 108 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 17:18:15,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 111 transitions. [2023-12-18 17:18:15,488 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 111 transitions. Word has length 103 [2023-12-18 17:18:15,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 17:18:15,488 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 111 transitions. [2023-12-18 17:18:15,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 1.3709677419354838) internal successors, (85), 62 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 17:18:15,489 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 111 transitions. [2023-12-18 17:18:15,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-18 17:18:15,489 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 17:18:15,489 INFO L195 NwaCegarLoop]: trace histogram [47, 47, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 17:18:15,496 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-18 17:18:15,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 17:18:15,695 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 17:18:15,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 17:18:15,695 INFO L85 PathProgramCache]: Analyzing trace with hash 440050064, now seen corresponding path program 4 times [2023-12-18 17:18:15,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 17:18:15,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754970654] [2023-12-18 17:18:15,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 17:18:15,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 17:18:15,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 17:18:17,170 INFO L134 CoverageAnalysis]: Checked inductivity of 2263 backedges. 0 proven. 1128 refuted. 0 times theorem prover too weak. 1135 trivial. 0 not checked. [2023-12-18 17:18:17,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 17:18:17,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754970654] [2023-12-18 17:18:17,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754970654] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 17:18:17,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [338984453] [2023-12-18 17:18:17,170 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-18 17:18:17,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 17:18:17,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 17:18:17,171 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) [2023-12-18 17:18:17,172 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-18 17:18:17,374 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-18 17:18:17,375 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 17:18:17,378 INFO L262 TraceCheckSpWp]: Trace formula consists of 835 conjuncts, 49 conjunts are in the unsatisfiable core [2023-12-18 17:18:17,381 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 17:18:17,436 INFO L134 CoverageAnalysis]: Checked inductivity of 2263 backedges. 0 proven. 1128 refuted. 0 times theorem prover too weak. 1135 trivial. 0 not checked. [2023-12-18 17:18:17,436 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 17:18:19,496 INFO L134 CoverageAnalysis]: Checked inductivity of 2263 backedges. 0 proven. 1128 refuted. 0 times theorem prover too weak. 1135 trivial. 0 not checked. [2023-12-18 17:18:19,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [338984453] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 17:18:19,497 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 17:18:19,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 98 [2023-12-18 17:18:19,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294607396] [2023-12-18 17:18:19,497 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 17:18:19,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 99 states [2023-12-18 17:18:19,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 17:18:19,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2023-12-18 17:18:19,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4851, Invalid=4851, Unknown=0, NotChecked=0, Total=9702 [2023-12-18 17:18:19,501 INFO L87 Difference]: Start difference. First operand 109 states and 111 transitions. Second operand has 99 states, 99 states have (on average 1.101010101010101) internal successors, (109), 98 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 17:18:20,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 17:18:20,059 INFO L93 Difference]: Finished difference Result 267 states and 368 transitions. [2023-12-18 17:18:20,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2023-12-18 17:18:20,060 INFO L78 Accepts]: Start accepts. Automaton has has 99 states, 99 states have (on average 1.101010101010101) internal successors, (109), 98 states have internal predecessors, (109), 0 states have call successors, (0), 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 108 [2023-12-18 17:18:20,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 17:18:20,061 INFO L225 Difference]: With dead ends: 267 [2023-12-18 17:18:20,061 INFO L226 Difference]: Without dead ends: 207 [2023-12-18 17:18:20,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=4851, Invalid=4851, Unknown=0, NotChecked=0, Total=9702 [2023-12-18 17:18:20,062 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 0 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 426 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 426 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-18 17:18:20,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 38 Invalid, 642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [426 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-18 17:18:20,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2023-12-18 17:18:20,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2023-12-18 17:18:20,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 206 states have (on average 1.0145631067961165) internal successors, (209), 206 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 17:18:20,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 209 transitions. [2023-12-18 17:18:20,097 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 209 transitions. Word has length 108 [2023-12-18 17:18:20,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 17:18:20,097 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 209 transitions. [2023-12-18 17:18:20,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 99 states, 99 states have (on average 1.101010101010101) internal successors, (109), 98 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 17:18:20,097 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 209 transitions. [2023-12-18 17:18:20,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2023-12-18 17:18:20,099 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 17:18:20,099 INFO L195 NwaCegarLoop]: trace histogram [96, 96, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 17:18:20,106 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-18 17:18:20,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 17:18:20,307 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 17:18:20,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 17:18:20,307 INFO L85 PathProgramCache]: Analyzing trace with hash -133658020, now seen corresponding path program 5 times [2023-12-18 17:18:20,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 17:18:20,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352230511] [2023-12-18 17:18:20,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 17:18:20,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 17:18:20,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 17:18:25,385 INFO L134 CoverageAnalysis]: Checked inductivity of 9319 backedges. 0 proven. 4656 refuted. 0 times theorem prover too weak. 4663 trivial. 0 not checked. [2023-12-18 17:18:25,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 17:18:25,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352230511] [2023-12-18 17:18:25,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352230511] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 17:18:25,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [293959159] [2023-12-18 17:18:25,386 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-18 17:18:25,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 17:18:25,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 17:18:25,387 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 17:18:25,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process Received shutdown request... [2023-12-18 17:32:41,046 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-18 17:32:41,046 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 [2023-12-18 17:32:42,065 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 [2023-12-18 17:32:42,247 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forcibly destroying the process [2023-12-18 17:32:42,290 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 137 [2023-12-18 17:32:42,291 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-18 17:32:42,291 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-18 17:32:42,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [98] total 98 [2023-12-18 17:32:42,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469543669] [2023-12-18 17:32:42,291 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-18 17:32:42,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 99 states [2023-12-18 17:32:42,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 17:32:42,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2023-12-18 17:32:42,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4851, Invalid=4851, Unknown=0, NotChecked=0, Total=9702 [2023-12-18 17:32:42,294 INFO L87 Difference]: Start difference. First operand 207 states and 209 transitions. Second operand has 99 states, 99 states have (on average 1.0808080808080809) internal successors, (107), 98 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 17:32:42,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-18 17:32:42,296 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=4851, Invalid=4851, Unknown=0, NotChecked=0, Total=9702 [2023-12-18 17:32:42,296 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 [2023-12-18 17:32:42,296 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] [2023-12-18 17:32:42,297 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-18 17:32:42,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-18 17:32:42,298 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (207states) and FLOYD_HOARE automaton (currently 2 states, 99 states before enhancement),while ReachableStatesComputation was computing reachable states (1 states constructed, input type IntersectNwa). [2023-12-18 17:32:42,301 INFO L445 BasicCegarLoop]: Path program histogram: [5, 3, 1] [2023-12-18 17:32:42,302 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-18 17:32:42,304 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.12 05:32:42 BoogieIcfgContainer [2023-12-18 17:32:42,304 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-18 17:32:42,306 INFO L158 Benchmark]: Toolchain (without parser) took 882154.75ms. Allocated memory was 303.0MB in the beginning and 631.2MB in the end (delta: 328.2MB). Free memory was 258.1MB in the beginning and 457.1MB in the end (delta: -199.1MB). Peak memory consumption was 129.5MB. Max. memory is 8.0GB. [2023-12-18 17:32:42,306 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 188.7MB. Free memory was 139.0MB in the beginning and 138.9MB in the end (delta: 132.9kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-18 17:32:42,306 INFO L158 Benchmark]: CACSL2BoogieTranslator took 168.07ms. Allocated memory is still 303.0MB. Free memory was 257.8MB in the beginning and 247.0MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-18 17:32:42,307 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.78ms. Allocated memory is still 303.0MB. Free memory was 247.0MB in the beginning and 245.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-18 17:32:42,307 INFO L158 Benchmark]: Boogie Preprocessor took 31.86ms. Allocated memory is still 303.0MB. Free memory was 245.5MB in the beginning and 243.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-18 17:32:42,307 INFO L158 Benchmark]: RCFGBuilder took 194.27ms. Allocated memory is still 303.0MB. Free memory was 243.4MB in the beginning and 231.2MB in the end (delta: 12.2MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-18 17:32:42,307 INFO L158 Benchmark]: TraceAbstraction took 881733.37ms. Allocated memory was 303.0MB in the beginning and 631.2MB in the end (delta: 328.2MB). Free memory was 230.8MB in the beginning and 457.1MB in the end (delta: -226.3MB). Peak memory consumption was 102.2MB. Max. memory is 8.0GB. [2023-12-18 17:32:42,309 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 188.7MB. Free memory was 139.0MB in the beginning and 138.9MB in the end (delta: 132.9kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 168.07ms. Allocated memory is still 303.0MB. Free memory was 257.8MB in the beginning and 247.0MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 21.78ms. Allocated memory is still 303.0MB. Free memory was 247.0MB in the beginning and 245.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 31.86ms. Allocated memory is still 303.0MB. Free memory was 245.5MB in the beginning and 243.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 194.27ms. Allocated memory is still 303.0MB. Free memory was 243.4MB in the beginning and 231.2MB in the end (delta: 12.2MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 881733.37ms. Allocated memory was 303.0MB in the beginning and 631.2MB in the end (delta: 328.2MB). Free memory was 230.8MB in the beginning and 457.1MB in the end (delta: -226.3MB). Peak memory consumption was 102.2MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 13]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 13). Cancelled while NwaCegarLoop was constructing difference of abstraction (207states) and FLOYD_HOARE automaton (currently 2 states, 99 states before enhancement),while ReachableStatesComputation was computing reachable states (1 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 881.7s, OverallIterations: 9, TraceHistogramMax: 96, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 9.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 78 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 78 mSDsluCounter, 206 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 148 mSDsCounter, 1054 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 692 IncrementalHoareTripleChecker+Invalid, 1746 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1054 mSolverCounterUnsat, 58 mSDtfsCounter, 692 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1070 GetRequests, 558 SyntacticMatches, 0 SemanticMatches, 512 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12268 ImplicationChecksByTransitivity, 15.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=207occurred in iteration=8, InterpolantAutomatonStates: 353, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 53 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 12.9s InterpolantComputationTime, 916 NumberOfCodeBlocks, 816 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 1217 ConstructedInterpolants, 2 QuantifiedInterpolants, 2820 SizeOfPredicates, 22 NumberOfNonLiveVariables, 1913 ConjunctsInSsa, 140 ConjunctsInUnsatCore, 22 InterpolantComputations, 2 PerfectInterpolantSequences, 14607/24746 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