/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/data_structures_set_multi_proc_ground-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 16:55:00,783 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 16:55:00,874 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 16:55:00,879 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 16:55:00,879 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 16:55:00,907 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 16:55:00,907 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 16:55:00,908 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 16:55:00,909 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 16:55:00,912 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 16:55:00,913 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 16:55:00,913 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 16:55:00,913 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 16:55:00,915 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 16:55:00,915 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 16:55:00,915 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 16:55:00,915 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 16:55:00,916 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 16:55:00,916 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 16:55:00,916 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 16:55:00,916 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 16:55:00,917 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 16:55:00,917 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 16:55:00,917 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 16:55:00,917 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 16:55:00,918 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 16:55:00,918 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 16:55:00,918 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 16:55:00,919 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 16:55:00,919 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 16:55:00,920 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 16:55:00,920 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 16:55:00,920 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 16:55:00,920 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 16:55:00,920 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 16:55:00,921 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 16:55:00,921 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 16:55:00,921 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 16:55:00,921 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 16:55:00,921 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 16:55:00,922 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 16:55:00,922 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 16:55:00,923 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 16:55:00,923 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 16:55:01,178 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 16:55:01,200 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 16:55:01,202 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 16:55:01,203 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 16:55:01,204 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 16:55:01,205 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/data_structures_set_multi_proc_ground-1.i [2023-12-15 16:55:02,336 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 16:55:02,524 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 16:55:02,525 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/data_structures_set_multi_proc_ground-1.i [2023-12-15 16:55:02,532 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94f8db212/f4af89a2323441dbad7a70855bb3c9ec/FLAG6267b8b65 [2023-12-15 16:55:02,543 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94f8db212/f4af89a2323441dbad7a70855bb3c9ec [2023-12-15 16:55:02,546 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 16:55:02,547 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 16:55:02,548 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 16:55:02,548 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 16:55:02,552 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 16:55:02,553 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 04:55:02" (1/1) ... [2023-12-15 16:55:02,554 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36c76c20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:55:02, skipping insertion in model container [2023-12-15 16:55:02,554 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 04:55:02" (1/1) ... [2023-12-15 16:55:02,576 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 16:55:02,698 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/data_structures_set_multi_proc_ground-1.i[832,845] [2023-12-15 16:55:02,717 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 16:55:02,724 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 16:55:02,734 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/data_structures_set_multi_proc_ground-1.i[832,845] [2023-12-15 16:55:02,744 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 16:55:02,758 INFO L206 MainTranslator]: Completed translation [2023-12-15 16:55:02,758 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:55:02 WrapperNode [2023-12-15 16:55:02,759 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 16:55:02,760 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 16:55:02,760 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 16:55:02,761 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 16:55:02,767 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:55:02" (1/1) ... [2023-12-15 16:55:02,784 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:55:02" (1/1) ... [2023-12-15 16:55:02,817 INFO L138 Inliner]: procedures = 18, calls = 26, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 138 [2023-12-15 16:55:02,818 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 16:55:02,818 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 16:55:02,818 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 16:55:02,818 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 16:55:02,827 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:55:02" (1/1) ... [2023-12-15 16:55:02,827 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:55:02" (1/1) ... [2023-12-15 16:55:02,839 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:55:02" (1/1) ... [2023-12-15 16:55:02,856 INFO L175 MemorySlicer]: Split 12 memory accesses to 3 slices as follows [2, 7, 3]. 58 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 3 writes are split as follows [0, 2, 1]. [2023-12-15 16:55:02,857 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:55:02" (1/1) ... [2023-12-15 16:55:02,857 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:55:02" (1/1) ... [2023-12-15 16:55:02,862 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:55:02" (1/1) ... [2023-12-15 16:55:02,866 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:55:02" (1/1) ... [2023-12-15 16:55:02,867 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:55:02" (1/1) ... [2023-12-15 16:55:02,878 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:55:02" (1/1) ... [2023-12-15 16:55:02,882 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 16:55:02,883 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 16:55:02,883 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 16:55:02,883 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 16:55:02,884 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:55:02" (1/1) ... [2023-12-15 16:55:02,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 16:55:02,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 16:55:02,918 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-15 16:55:02,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-15 16:55:02,938 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 16:55:02,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 16:55:02,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-15 16:55:02,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-12-15 16:55:02,939 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-15 16:55:02,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-12-15 16:55:02,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-12-15 16:55:02,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-12-15 16:55:02,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 16:55:02,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 16:55:02,939 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-12-15 16:55:02,939 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-12-15 16:55:02,939 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-12-15 16:55:02,940 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-15 16:55:02,940 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-15 16:55:02,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-15 16:55:03,010 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 16:55:03,012 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 16:55:03,203 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 16:55:03,246 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 16:55:03,246 INFO L309 CfgBuilder]: Removed 8 assume(true) statements. [2023-12-15 16:55:03,247 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 04:55:03 BoogieIcfgContainer [2023-12-15 16:55:03,247 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 16:55:03,249 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 16:55:03,249 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 16:55:03,253 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 16:55:03,253 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 04:55:02" (1/3) ... [2023-12-15 16:55:03,254 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@319ad5ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 04:55:03, skipping insertion in model container [2023-12-15 16:55:03,254 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:55:02" (2/3) ... [2023-12-15 16:55:03,254 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@319ad5ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 04:55:03, skipping insertion in model container [2023-12-15 16:55:03,254 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 04:55:03" (3/3) ... [2023-12-15 16:55:03,255 INFO L112 eAbstractionObserver]: Analyzing ICFG data_structures_set_multi_proc_ground-1.i [2023-12-15 16:55:03,269 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 16:55:03,270 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 16:55:03,305 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 16:55:03,311 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;@24518602, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 16:55:03,312 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 16:55:03,318 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 28 states have internal predecessors, (47), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-15 16:55:03,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-15 16:55:03,324 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 16:55:03,324 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 16:55:03,325 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 16:55:03,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 16:55:03,330 INFO L85 PathProgramCache]: Analyzing trace with hash 1234641983, now seen corresponding path program 1 times [2023-12-15 16:55:03,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 16:55:03,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836010198] [2023-12-15 16:55:03,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 16:55:03,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 16:55:03,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 16:55:03,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 16:55:03,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 16:55:03,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836010198] [2023-12-15 16:55:03,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836010198] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 16:55:03,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 16:55:03,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 16:55:03,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061192965] [2023-12-15 16:55:03,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 16:55:03,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 16:55:03,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 16:55:03,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 16:55:03,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 16:55:03,601 INFO L87 Difference]: Start difference. First operand has 32 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 28 states have internal predecessors, (47), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 16:55:03,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 16:55:03,744 INFO L93 Difference]: Finished difference Result 85 states and 145 transitions. [2023-12-15 16:55:03,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 16:55:03,747 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-12-15 16:55:03,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 16:55:03,755 INFO L225 Difference]: With dead ends: 85 [2023-12-15 16:55:03,755 INFO L226 Difference]: Without dead ends: 52 [2023-12-15 16:55:03,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 16:55:03,760 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 25 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 16:55:03,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 50 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 16:55:03,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2023-12-15 16:55:03,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 31. [2023-12-15 16:55:03,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 27 states have (on average 1.3703703703703705) internal successors, (37), 27 states have internal predecessors, (37), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-15 16:55:03,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 41 transitions. [2023-12-15 16:55:03,795 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 41 transitions. Word has length 9 [2023-12-15 16:55:03,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 16:55:03,795 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 41 transitions. [2023-12-15 16:55:03,796 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 16:55:03,796 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 41 transitions. [2023-12-15 16:55:03,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-15 16:55:03,796 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 16:55:03,797 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 16:55:03,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-15 16:55:03,797 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 16:55:03,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 16:55:03,798 INFO L85 PathProgramCache]: Analyzing trace with hash 312467306, now seen corresponding path program 1 times [2023-12-15 16:55:03,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 16:55:03,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877246658] [2023-12-15 16:55:03,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 16:55:03,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 16:55:03,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 16:55:03,871 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 16:55:03,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 16:55:03,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877246658] [2023-12-15 16:55:03,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877246658] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 16:55:03,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [390362228] [2023-12-15 16:55:03,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 16:55:03,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 16:55:03,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 16:55:03,875 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 16:55:03,904 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 16:55:03,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 16:55:03,955 INFO L262 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 16:55:03,959 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 16:55:04,006 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 16:55:04,006 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 16:55:04,036 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 16:55:04,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [390362228] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 16:55:04,038 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 16:55:04,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-12-15 16:55:04,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446823713] [2023-12-15 16:55:04,040 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 16:55:04,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 16:55:04,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 16:55:04,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 16:55:04,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-12-15 16:55:04,043 INFO L87 Difference]: Start difference. First operand 31 states and 41 transitions. Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 16:55:04,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 16:55:04,250 INFO L93 Difference]: Finished difference Result 146 states and 208 transitions. [2023-12-15 16:55:04,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 16:55:04,250 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-12-15 16:55:04,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 16:55:04,256 INFO L225 Difference]: With dead ends: 146 [2023-12-15 16:55:04,257 INFO L226 Difference]: Without dead ends: 118 [2023-12-15 16:55:04,259 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 [2023-12-15 16:55:04,260 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 187 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 16:55:04,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 108 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 16:55:04,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2023-12-15 16:55:04,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 34. [2023-12-15 16:55:04,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 30 states have (on average 1.3333333333333333) internal successors, (40), 30 states have internal predecessors, (40), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-15 16:55:04,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 44 transitions. [2023-12-15 16:55:04,278 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 44 transitions. Word has length 10 [2023-12-15 16:55:04,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 16:55:04,279 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 44 transitions. [2023-12-15 16:55:04,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 16:55:04,280 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 44 transitions. [2023-12-15 16:55:04,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-12-15 16:55:04,281 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 16:55:04,281 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 16:55:04,288 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-15 16:55:04,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 16:55:04,486 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 16:55:04,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 16:55:04,487 INFO L85 PathProgramCache]: Analyzing trace with hash -1551755521, now seen corresponding path program 2 times [2023-12-15 16:55:04,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 16:55:04,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980035198] [2023-12-15 16:55:04,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 16:55:04,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 16:55:04,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 16:55:04,636 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-15 16:55:04,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 16:55:04,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980035198] [2023-12-15 16:55:04,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980035198] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 16:55:04,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 16:55:04,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 16:55:04,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433501621] [2023-12-15 16:55:04,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 16:55:04,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 16:55:04,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 16:55:04,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 16:55:04,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 16:55:04,643 INFO L87 Difference]: Start difference. First operand 34 states and 44 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 16:55:04,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 16:55:04,668 INFO L93 Difference]: Finished difference Result 66 states and 87 transitions. [2023-12-15 16:55:04,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 16:55:04,669 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-12-15 16:55:04,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 16:55:04,670 INFO L225 Difference]: With dead ends: 66 [2023-12-15 16:55:04,670 INFO L226 Difference]: Without dead ends: 37 [2023-12-15 16:55:04,670 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 16:55:04,671 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 31 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 16:55:04,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 43 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 16:55:04,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-12-15 16:55:04,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2023-12-15 16:55:04,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 34 states have (on average 1.3235294117647058) internal successors, (45), 34 states have internal predecessors, (45), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-15 16:55:04,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 47 transitions. [2023-12-15 16:55:04,676 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 47 transitions. Word has length 13 [2023-12-15 16:55:04,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 16:55:04,677 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 47 transitions. [2023-12-15 16:55:04,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 16:55:04,677 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 47 transitions. [2023-12-15 16:55:04,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-12-15 16:55:04,678 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 16:55:04,678 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 16:55:04,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-15 16:55:04,678 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 16:55:04,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 16:55:04,679 INFO L85 PathProgramCache]: Analyzing trace with hash -1817742572, now seen corresponding path program 1 times [2023-12-15 16:55:04,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 16:55:04,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928578062] [2023-12-15 16:55:04,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 16:55:04,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 16:55:04,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 16:55:04,741 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-15 16:55:04,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 16:55:04,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928578062] [2023-12-15 16:55:04,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928578062] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 16:55:04,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 16:55:04,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 16:55:04,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709683616] [2023-12-15 16:55:04,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 16:55:04,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 16:55:04,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 16:55:04,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 16:55:04,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 16:55:04,743 INFO L87 Difference]: Start difference. First operand 37 states and 47 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 16:55:04,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 16:55:04,772 INFO L93 Difference]: Finished difference Result 73 states and 95 transitions. [2023-12-15 16:55:04,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 16:55:04,773 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2023-12-15 16:55:04,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 16:55:04,774 INFO L225 Difference]: With dead ends: 73 [2023-12-15 16:55:04,774 INFO L226 Difference]: Without dead ends: 46 [2023-12-15 16:55:04,774 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 16:55:04,780 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 9 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 16:55:04,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 46 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 16:55:04,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2023-12-15 16:55:04,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 38. [2023-12-15 16:55:04,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 35 states have (on average 1.3142857142857143) internal successors, (46), 35 states have internal predecessors, (46), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-15 16:55:04,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 48 transitions. [2023-12-15 16:55:04,791 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 48 transitions. Word has length 25 [2023-12-15 16:55:04,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 16:55:04,792 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 48 transitions. [2023-12-15 16:55:04,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 16:55:04,792 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 48 transitions. [2023-12-15 16:55:04,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-15 16:55:04,794 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 16:55:04,794 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 16:55:04,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-15 16:55:04,794 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 16:55:04,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 16:55:04,795 INFO L85 PathProgramCache]: Analyzing trace with hash 209311678, now seen corresponding path program 1 times [2023-12-15 16:55:04,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 16:55:04,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820721392] [2023-12-15 16:55:04,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 16:55:04,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 16:55:04,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 16:55:04,901 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-15 16:55:04,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 16:55:04,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820721392] [2023-12-15 16:55:04,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820721392] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 16:55:04,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [597292768] [2023-12-15 16:55:04,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 16:55:04,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 16:55:04,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 16:55:04,909 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 16:55:04,911 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 16:55:05,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 16:55:05,036 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 16:55:05,038 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 16:55:05,079 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-15 16:55:05,079 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 16:55:05,141 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-15 16:55:05,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [597292768] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 16:55:05,142 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 16:55:05,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 6] total 14 [2023-12-15 16:55:05,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312586411] [2023-12-15 16:55:05,142 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 16:55:05,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-15 16:55:05,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 16:55:05,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-15 16:55:05,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2023-12-15 16:55:05,144 INFO L87 Difference]: Start difference. First operand 38 states and 48 transitions. Second operand has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 16:55:05,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 16:55:05,293 INFO L93 Difference]: Finished difference Result 149 states and 205 transitions. [2023-12-15 16:55:05,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 16:55:05,296 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2023-12-15 16:55:05,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 16:55:05,298 INFO L225 Difference]: With dead ends: 149 [2023-12-15 16:55:05,298 INFO L226 Difference]: Without dead ends: 117 [2023-12-15 16:55:05,299 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=141, Unknown=0, NotChecked=0, Total=240 [2023-12-15 16:55:05,300 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 197 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 16:55:05,301 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 91 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 16:55:05,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2023-12-15 16:55:05,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 53. [2023-12-15 16:55:05,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 50 states have (on average 1.28) internal successors, (64), 50 states have internal predecessors, (64), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-15 16:55:05,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 66 transitions. [2023-12-15 16:55:05,321 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 66 transitions. Word has length 26 [2023-12-15 16:55:05,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 16:55:05,321 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 66 transitions. [2023-12-15 16:55:05,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 16:55:05,321 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 66 transitions. [2023-12-15 16:55:05,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-12-15 16:55:05,322 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 16:55:05,322 INFO L195 NwaCegarLoop]: trace histogram [10, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 16:55:05,340 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-15 16:55:05,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 16:55:05,533 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 16:55:05,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 16:55:05,534 INFO L85 PathProgramCache]: Analyzing trace with hash 548387529, now seen corresponding path program 2 times [2023-12-15 16:55:05,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 16:55:05,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466658103] [2023-12-15 16:55:05,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 16:55:05,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 16:55:05,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 16:55:05,847 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-15 16:55:05,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 16:55:05,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466658103] [2023-12-15 16:55:05,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466658103] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 16:55:05,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1424110415] [2023-12-15 16:55:05,848 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-15 16:55:05,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 16:55:05,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 16:55:05,849 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 16:55:05,869 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-15 16:55:05,958 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-15 16:55:05,959 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-15 16:55:05,960 INFO L262 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-15 16:55:05,964 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 16:55:06,012 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-15 16:55:06,012 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 16:55:06,224 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-15 16:55:06,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1424110415] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 16:55:06,225 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 16:55:06,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2023-12-15 16:55:06,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406026061] [2023-12-15 16:55:06,225 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 16:55:06,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-15 16:55:06,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 16:55:06,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-15 16:55:06,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2023-12-15 16:55:06,227 INFO L87 Difference]: Start difference. First operand 53 states and 66 transitions. Second operand has 25 states, 25 states have (on average 1.8) internal successors, (45), 24 states have internal predecessors, (45), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 16:55:06,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 16:55:06,437 INFO L93 Difference]: Finished difference Result 216 states and 297 transitions. [2023-12-15 16:55:06,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-15 16:55:06,438 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.8) internal successors, (45), 24 states have internal predecessors, (45), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2023-12-15 16:55:06,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 16:55:06,440 INFO L225 Difference]: With dead ends: 216 [2023-12-15 16:55:06,440 INFO L226 Difference]: Without dead ends: 175 [2023-12-15 16:55:06,441 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2023-12-15 16:55:06,442 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 247 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 16:55:06,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [269 Valid, 59 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 16:55:06,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2023-12-15 16:55:06,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 65. [2023-12-15 16:55:06,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 62 states have (on average 1.2258064516129032) internal successors, (76), 62 states have internal predecessors, (76), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-15 16:55:06,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 78 transitions. [2023-12-15 16:55:06,474 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 78 transitions. Word has length 39 [2023-12-15 16:55:06,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 16:55:06,475 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 78 transitions. [2023-12-15 16:55:06,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.8) internal successors, (45), 24 states have internal predecessors, (45), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 16:55:06,475 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 78 transitions. [2023-12-15 16:55:06,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-15 16:55:06,478 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 16:55:06,478 INFO L195 NwaCegarLoop]: trace histogram [22, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 16:55:06,489 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-15 16:55:06,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 16:55:06,689 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 16:55:06,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 16:55:06,690 INFO L85 PathProgramCache]: Analyzing trace with hash 756712201, now seen corresponding path program 3 times [2023-12-15 16:55:06,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 16:55:06,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220817262] [2023-12-15 16:55:06,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 16:55:06,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 16:55:06,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 16:55:07,317 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-15 16:55:07,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 16:55:07,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220817262] [2023-12-15 16:55:07,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220817262] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 16:55:07,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1344998508] [2023-12-15 16:55:07,318 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-15 16:55:07,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 16:55:07,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 16:55:07,319 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 16:55:07,347 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-15 16:55:07,428 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-15 16:55:07,428 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-15 16:55:07,429 INFO L262 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-15 16:55:07,433 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 16:55:07,479 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2023-12-15 16:55:07,480 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 16:55:07,536 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2023-12-15 16:55:07,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1344998508] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 16:55:07,537 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 16:55:07,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 5, 5] total 31 [2023-12-15 16:55:07,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525201943] [2023-12-15 16:55:07,537 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 16:55:07,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-15 16:55:07,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 16:55:07,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-15 16:55:07,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=603, Unknown=0, NotChecked=0, Total=930 [2023-12-15 16:55:07,540 INFO L87 Difference]: Start difference. First operand 65 states and 78 transitions. Second operand has 31 states, 31 states have (on average 1.8064516129032258) internal successors, (56), 31 states have internal predecessors, (56), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 16:55:07,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 16:55:07,841 INFO L93 Difference]: Finished difference Result 284 states and 388 transitions. [2023-12-15 16:55:07,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-15 16:55:07,842 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.8064516129032258) internal successors, (56), 31 states have internal predecessors, (56), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2023-12-15 16:55:07,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 16:55:07,843 INFO L225 Difference]: With dead ends: 284 [2023-12-15 16:55:07,843 INFO L226 Difference]: Without dead ends: 243 [2023-12-15 16:55:07,846 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=513, Invalid=819, Unknown=0, NotChecked=0, Total=1332 [2023-12-15 16:55:07,846 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 946 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 969 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 16:55:07,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [969 Valid, 120 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 16:55:07,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2023-12-15 16:55:07,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 126. [2023-12-15 16:55:07,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 123 states have (on average 1.3089430894308942) internal successors, (161), 123 states have internal predecessors, (161), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-15 16:55:07,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 163 transitions. [2023-12-15 16:55:07,863 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 163 transitions. Word has length 51 [2023-12-15 16:55:07,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 16:55:07,864 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 163 transitions. [2023-12-15 16:55:07,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.8064516129032258) internal successors, (56), 31 states have internal predecessors, (56), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 16:55:07,864 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 163 transitions. [2023-12-15 16:55:07,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-15 16:55:07,866 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 16:55:07,866 INFO L195 NwaCegarLoop]: trace histogram [23, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 16:55:07,874 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-15 16:55:08,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 16:55:08,072 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 16:55:08,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 16:55:08,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1458579528, now seen corresponding path program 4 times [2023-12-15 16:55:08,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 16:55:08,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28824676] [2023-12-15 16:55:08,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 16:55:08,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 16:55:08,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 16:55:08,870 INFO L134 CoverageAnalysis]: Checked inductivity of 393 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2023-12-15 16:55:08,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 16:55:08,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28824676] [2023-12-15 16:55:08,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28824676] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 16:55:08,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [817522257] [2023-12-15 16:55:08,871 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-15 16:55:08,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 16:55:08,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 16:55:08,872 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 16:55:08,887 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-15 16:55:09,036 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-15 16:55:09,036 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-15 16:55:09,039 INFO L262 TraceCheckSpWp]: Trace formula consists of 587 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-15 16:55:09,043 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 16:55:09,177 INFO L134 CoverageAnalysis]: Checked inductivity of 393 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2023-12-15 16:55:09,177 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 16:55:09,348 INFO L134 CoverageAnalysis]: Checked inductivity of 393 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2023-12-15 16:55:09,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [817522257] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 16:55:09,348 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 16:55:09,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 9, 9] total 40 [2023-12-15 16:55:09,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401605530] [2023-12-15 16:55:09,349 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 16:55:09,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-12-15 16:55:09,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 16:55:09,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-12-15 16:55:09,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=444, Invalid=1116, Unknown=0, NotChecked=0, Total=1560 [2023-12-15 16:55:09,351 INFO L87 Difference]: Start difference. First operand 126 states and 163 transitions. Second operand has 40 states, 40 states have (on average 3.2) internal successors, (128), 40 states have internal predecessors, (128), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 16:55:09,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 16:55:09,806 INFO L93 Difference]: Finished difference Result 470 states and 656 transitions. [2023-12-15 16:55:09,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-12-15 16:55:09,807 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.2) internal successors, (128), 40 states have internal predecessors, (128), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2023-12-15 16:55:09,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 16:55:09,810 INFO L225 Difference]: With dead ends: 470 [2023-12-15 16:55:09,810 INFO L226 Difference]: Without dead ends: 369 [2023-12-15 16:55:09,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 428 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1004, Invalid=1858, Unknown=0, NotChecked=0, Total=2862 [2023-12-15 16:55:09,813 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 993 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1017 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 16:55:09,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1017 Valid, 221 Invalid, 422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 16:55:09,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2023-12-15 16:55:09,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 247. [2023-12-15 16:55:09,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 244 states have (on average 1.3524590163934427) internal successors, (330), 244 states have internal predecessors, (330), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-15 16:55:09,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 332 transitions. [2023-12-15 16:55:09,833 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 332 transitions. Word has length 80 [2023-12-15 16:55:09,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 16:55:09,833 INFO L495 AbstractCegarLoop]: Abstraction has 247 states and 332 transitions. [2023-12-15 16:55:09,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.2) internal successors, (128), 40 states have internal predecessors, (128), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 16:55:09,833 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 332 transitions. [2023-12-15 16:55:09,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-12-15 16:55:09,835 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 16:55:09,835 INFO L195 NwaCegarLoop]: trace histogram [24, 14, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 16:55:09,847 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-15 16:55:10,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 16:55:10,041 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 16:55:10,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 16:55:10,042 INFO L85 PathProgramCache]: Analyzing trace with hash -805865627, now seen corresponding path program 5 times [2023-12-15 16:55:10,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 16:55:10,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632682393] [2023-12-15 16:55:10,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 16:55:10,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 16:55:10,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 16:55:10,977 INFO L134 CoverageAnalysis]: Checked inductivity of 965 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 665 trivial. 0 not checked. [2023-12-15 16:55:10,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 16:55:10,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632682393] [2023-12-15 16:55:10,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632682393] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 16:55:10,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2090684109] [2023-12-15 16:55:10,978 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-15 16:55:10,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 16:55:10,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 16:55:10,979 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 16:55:11,002 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process Received shutdown request... [2023-12-15 16:56:17,809 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 16:56:17,834 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 16:56:18,815 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 [2023-12-15 16:56:19,034 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forcibly destroying the process [2023-12-15 16:56:19,042 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 137 [2023-12-15 16:56:19,044 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 16:56:19,044 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-15 16:56:19,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2023-12-15 16:56:19,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146708931] [2023-12-15 16:56:19,044 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-15 16:56:19,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-12-15 16:56:19,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 16:56:19,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-12-15 16:56:19,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2023-12-15 16:56:19,046 INFO L87 Difference]: Start difference. First operand 247 states and 332 transitions. Second operand has 27 states, 27 states have (on average 1.6666666666666667) internal successors, (45), 26 states have internal predecessors, (45), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 16:56:19,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 16:56:19,049 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2023-12-15 16:56:19,051 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 [2023-12-15 16:56:19,051 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] [2023-12-15 16:56:19,052 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 16:56:19,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-15 16:56:19,053 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (247states) and FLOYD_HOARE automaton (currently 2 states, 27 states before enhancement),while ReachableStatesComputation was computing reachable states (1 states constructed, input type IntersectNwa). [2023-12-15 16:56:19,058 INFO L445 BasicCegarLoop]: Path program histogram: [5, 2, 1, 1] [2023-12-15 16:56:19,060 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 16:56:19,062 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 04:56:19 BoogieIcfgContainer [2023-12-15 16:56:19,063 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 16:56:19,063 INFO L158 Benchmark]: Toolchain (without parser) took 76516.36ms. Allocated memory was 221.2MB in the beginning and 442.5MB in the end (delta: 221.2MB). Free memory was 169.5MB in the beginning and 209.0MB in the end (delta: -39.4MB). Peak memory consumption was 182.2MB. Max. memory is 8.0GB. [2023-12-15 16:56:19,063 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 221.2MB. Free memory is still 169.1MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 16:56:19,064 INFO L158 Benchmark]: CACSL2BoogieTranslator took 211.11ms. Allocated memory is still 221.2MB. Free memory was 169.5MB in the beginning and 158.0MB in the end (delta: 11.6MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-15 16:56:19,064 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.37ms. Allocated memory is still 221.2MB. Free memory was 158.0MB in the beginning and 155.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-15 16:56:19,064 INFO L158 Benchmark]: Boogie Preprocessor took 64.00ms. Allocated memory is still 221.2MB. Free memory was 155.9MB in the beginning and 153.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-15 16:56:19,065 INFO L158 Benchmark]: RCFGBuilder took 364.31ms. Allocated memory is still 221.2MB. Free memory was 153.8MB in the beginning and 137.4MB in the end (delta: 16.4MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2023-12-15 16:56:19,065 INFO L158 Benchmark]: TraceAbstraction took 75813.37ms. Allocated memory was 221.2MB in the beginning and 442.5MB in the end (delta: 221.2MB). Free memory was 136.6MB in the beginning and 209.0MB in the end (delta: -72.3MB). Peak memory consumption was 149.7MB. Max. memory is 8.0GB. [2023-12-15 16:56:19,067 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 221.2MB. Free memory is still 169.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 211.11ms. Allocated memory is still 221.2MB. Free memory was 169.5MB in the beginning and 158.0MB in the end (delta: 11.6MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 57.37ms. Allocated memory is still 221.2MB. Free memory was 158.0MB in the beginning and 155.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 64.00ms. Allocated memory is still 221.2MB. Free memory was 155.9MB in the beginning and 153.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 364.31ms. Allocated memory is still 221.2MB. Free memory was 153.8MB in the beginning and 137.4MB in the end (delta: 16.4MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * TraceAbstraction took 75813.37ms. Allocated memory was 221.2MB in the beginning and 442.5MB in the end (delta: 221.2MB). Free memory was 136.6MB in the beginning and 209.0MB in the end (delta: -72.3MB). Peak memory consumption was 149.7MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - 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 (247states) and FLOYD_HOARE automaton (currently 2 states, 27 states before enhancement),while ReachableStatesComputation was computing reachable states (1 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 75.8s, OverallIterations: 9, TraceHistogramMax: 24, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2724 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2635 mSDsluCounter, 738 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 545 mSDsCounter, 402 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 981 IncrementalHoareTripleChecker+Invalid, 1383 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 402 mSolverCounterUnsat, 193 mSDtfsCounter, 981 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 541 GetRequests, 383 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 631 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=247occurred in iteration=8, InterpolantAutomatonStates: 125, 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, 526 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.7s InterpolantComputationTime, 596 NumberOfCodeBlocks, 570 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 783 ConstructedInterpolants, 0 QuantifiedInterpolants, 1211 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1228 ConjunctsInSsa, 33 ConjunctsInUnsatCore, 19 InterpolantComputations, 3 PerfectInterpolantSequences, 1978/3194 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