/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/array-examples/standard_partition_ground-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 00:02:20,981 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 00:02:21,022 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-16 00:02:21,025 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 00:02:21,025 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 00:02:21,039 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 00:02:21,039 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 00:02:21,039 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 00:02:21,040 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 00:02:21,042 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 00:02:21,043 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 00:02:21,043 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 00:02:21,043 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 00:02:21,044 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 00:02:21,044 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 00:02:21,045 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 00:02:21,045 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 00:02:21,045 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 00:02:21,045 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 00:02:21,046 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 00:02:21,046 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 00:02:21,046 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 00:02:21,046 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 00:02:21,047 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 00:02:21,047 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 00:02:21,047 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 00:02:21,047 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 00:02:21,047 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 00:02:21,048 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 00:02:21,048 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 00:02:21,049 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 00:02:21,049 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 00:02:21,049 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 00:02:21,049 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 00:02:21,049 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 00:02:21,049 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 00:02:21,049 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 00:02:21,049 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 00:02:21,049 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 00:02:21,050 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 00:02:21,050 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 00:02:21,050 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 00:02:21,050 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 00:02:21,050 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-16 00:02:21,236 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 00:02:21,253 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 00:02:21,255 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 00:02:21,255 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 00:02:21,256 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 00:02:21,256 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_partition_ground-1.i [2023-12-16 00:02:22,244 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 00:02:22,393 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 00:02:22,395 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_partition_ground-1.i [2023-12-16 00:02:22,401 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7356d8d75/f27b1afc31cd44d9ba1d17cb0ba6582e/FLAG0ecdc5102 [2023-12-16 00:02:22,413 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7356d8d75/f27b1afc31cd44d9ba1d17cb0ba6582e [2023-12-16 00:02:22,415 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 00:02:22,416 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 00:02:22,419 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 00:02:22,419 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 00:02:22,422 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 00:02:22,423 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 12:02:22" (1/1) ... [2023-12-16 00:02:22,423 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f093002 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:02:22, skipping insertion in model container [2023-12-16 00:02:22,423 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 12:02:22" (1/1) ... [2023-12-16 00:02:22,438 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 00:02:22,535 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_partition_ground-1.i[860,873] [2023-12-16 00:02:22,545 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 00:02:22,552 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 00:02:22,560 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_partition_ground-1.i[860,873] [2023-12-16 00:02:22,566 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 00:02:22,575 INFO L206 MainTranslator]: Completed translation [2023-12-16 00:02:22,575 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:02:22 WrapperNode [2023-12-16 00:02:22,575 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 00:02:22,576 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 00:02:22,576 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 00:02:22,576 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 00:02:22,580 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:02:22" (1/1) ... [2023-12-16 00:02:22,584 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:02:22" (1/1) ... [2023-12-16 00:02:22,596 INFO L138 Inliner]: procedures = 16, calls = 26, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 82 [2023-12-16 00:02:22,596 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 00:02:22,597 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 00:02:22,597 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 00:02:22,597 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 00:02:22,605 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:02:22" (1/1) ... [2023-12-16 00:02:22,605 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:02:22" (1/1) ... [2023-12-16 00:02:22,607 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:02:22" (1/1) ... [2023-12-16 00:02:22,620 INFO L175 MemorySlicer]: Split 11 memory accesses to 4 slices as follows [2, 5, 2, 2]. 45 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 3 writes are split as follows [0, 1, 1, 1]. [2023-12-16 00:02:22,620 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:02:22" (1/1) ... [2023-12-16 00:02:22,621 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:02:22" (1/1) ... [2023-12-16 00:02:22,624 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:02:22" (1/1) ... [2023-12-16 00:02:22,627 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:02:22" (1/1) ... [2023-12-16 00:02:22,627 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:02:22" (1/1) ... [2023-12-16 00:02:22,628 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:02:22" (1/1) ... [2023-12-16 00:02:22,630 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 00:02:22,630 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 00:02:22,630 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 00:02:22,630 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 00:02:22,631 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:02:22" (1/1) ... [2023-12-16 00:02:22,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 00:02:22,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:02:22,660 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-16 00:02:22,681 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 00:02:22,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 00:02:22,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-16 00:02:22,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-12-16 00:02:22,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-12-16 00:02:22,681 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-16 00:02:22,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-12-16 00:02:22,683 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-16 00:02:22,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-12-16 00:02:22,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-12-16 00:02:22,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-12-16 00:02:22,684 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 00:02:22,684 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 00:02:22,684 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-12-16 00:02:22,684 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-12-16 00:02:22,684 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-12-16 00:02:22,684 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-12-16 00:02:22,684 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-16 00:02:22,684 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-16 00:02:22,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-16 00:02:22,748 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 00:02:22,751 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 00:02:22,886 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 00:02:22,903 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 00:02:22,904 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-12-16 00:02:22,905 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 12:02:22 BoogieIcfgContainer [2023-12-16 00:02:22,905 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 00:02:22,906 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 00:02:22,906 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 00:02:22,908 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 00:02:22,909 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 12:02:22" (1/3) ... [2023-12-16 00:02:22,909 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e006a51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 12:02:22, skipping insertion in model container [2023-12-16 00:02:22,909 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:02:22" (2/3) ... [2023-12-16 00:02:22,909 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e006a51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 12:02:22, skipping insertion in model container [2023-12-16 00:02:22,909 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 12:02:22" (3/3) ... [2023-12-16 00:02:22,910 INFO L112 eAbstractionObserver]: Analyzing ICFG standard_partition_ground-1.i [2023-12-16 00:02:22,921 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 00:02:22,921 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 00:02:22,949 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 00:02:22,953 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;@331de49, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 00:02:22,954 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 00:02:22,956 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 19 states have (on average 1.631578947368421) internal successors, (31), 20 states have internal predecessors, (31), 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) [2023-12-16 00:02:22,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-16 00:02:22,960 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:02:22,961 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:02:22,961 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:02:22,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:02:22,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1298611175, now seen corresponding path program 1 times [2023-12-16 00:02:22,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:02:22,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022234103] [2023-12-16 00:02:22,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:02:22,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:02:23,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:02:23,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:02:23,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:02:23,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022234103] [2023-12-16 00:02:23,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022234103] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:02:23,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:02:23,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 00:02:23,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721639645] [2023-12-16 00:02:23,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:02:23,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 00:02:23,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:02:23,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 00:02:23,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 00:02:23,121 INFO L87 Difference]: Start difference. First operand has 24 states, 19 states have (on average 1.631578947368421) internal successors, (31), 20 states have internal predecessors, (31), 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 2 states, 2 states have (on average 4.5) internal successors, (9), 2 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) [2023-12-16 00:02:23,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:02:23,144 INFO L93 Difference]: Finished difference Result 44 states and 65 transitions. [2023-12-16 00:02:23,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 00:02:23,146 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 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 10 [2023-12-16 00:02:23,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:02:23,150 INFO L225 Difference]: With dead ends: 44 [2023-12-16 00:02:23,150 INFO L226 Difference]: Without dead ends: 22 [2023-12-16 00:02:23,152 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 00:02:23,154 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 00:02:23,155 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 26 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:02:23,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2023-12-16 00:02:23,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2023-12-16 00:02:23,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 18 states have internal predecessors, (24), 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) [2023-12-16 00:02:23,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 28 transitions. [2023-12-16 00:02:23,176 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 28 transitions. Word has length 10 [2023-12-16 00:02:23,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:02:23,177 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 28 transitions. [2023-12-16 00:02:23,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 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) [2023-12-16 00:02:23,177 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 28 transitions. [2023-12-16 00:02:23,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-16 00:02:23,177 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:02:23,178 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:02:23,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-16 00:02:23,178 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:02:23,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:02:23,178 INFO L85 PathProgramCache]: Analyzing trace with hash -1466832111, now seen corresponding path program 1 times [2023-12-16 00:02:23,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:02:23,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046783533] [2023-12-16 00:02:23,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:02:23,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:02:23,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:02:23,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:02:23,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:02:23,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046783533] [2023-12-16 00:02:23,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046783533] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:02:23,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:02:23,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 00:02:23,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039898167] [2023-12-16 00:02:23,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:02:23,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 00:02:23,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:02:23,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 00:02:23,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 00:02:23,251 INFO L87 Difference]: Start difference. First operand 22 states and 28 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 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) [2023-12-16 00:02:23,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:02:23,294 INFO L93 Difference]: Finished difference Result 46 states and 60 transitions. [2023-12-16 00:02:23,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 00:02:23,295 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 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 10 [2023-12-16 00:02:23,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:02:23,295 INFO L225 Difference]: With dead ends: 46 [2023-12-16 00:02:23,295 INFO L226 Difference]: Without dead ends: 28 [2023-12-16 00:02:23,296 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 00:02:23,297 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 6 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 00:02:23,297 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 35 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:02:23,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-12-16 00:02:23,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 24. [2023-12-16 00:02:23,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 20 states have (on average 1.3) internal successors, (26), 20 states have internal predecessors, (26), 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) [2023-12-16 00:02:23,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 30 transitions. [2023-12-16 00:02:23,301 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 30 transitions. Word has length 10 [2023-12-16 00:02:23,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:02:23,301 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 30 transitions. [2023-12-16 00:02:23,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 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) [2023-12-16 00:02:23,301 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 30 transitions. [2023-12-16 00:02:23,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-16 00:02:23,302 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:02:23,302 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:02:23,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-16 00:02:23,302 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:02:23,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:02:23,303 INFO L85 PathProgramCache]: Analyzing trace with hash -800811499, now seen corresponding path program 1 times [2023-12-16 00:02:23,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:02:23,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62511326] [2023-12-16 00:02:23,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:02:23,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:02:23,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:02:23,418 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-16 00:02:23,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:02:23,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62511326] [2023-12-16 00:02:23,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62511326] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 00:02:23,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [619181883] [2023-12-16 00:02:23,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:02:23,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:02:23,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:02:23,421 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 00:02:23,437 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-16 00:02:23,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:02:23,500 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 00:02:23,506 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 00:02:23,545 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-16 00:02:23,546 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 00:02:23,571 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-16 00:02:23,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [619181883] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 00:02:23,575 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 00:02:23,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-12-16 00:02:23,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371096616] [2023-12-16 00:02:23,575 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 00:02:23,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 00:02:23,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:02:23,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 00:02:23,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-12-16 00:02:23,579 INFO L87 Difference]: Start difference. First operand 24 states and 30 transitions. Second operand has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 6 states have internal predecessors, (24), 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) [2023-12-16 00:02:23,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:02:23,649 INFO L93 Difference]: Finished difference Result 61 states and 83 transitions. [2023-12-16 00:02:23,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 00:02:23,650 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 6 states have internal predecessors, (24), 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 16 [2023-12-16 00:02:23,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:02:23,651 INFO L225 Difference]: With dead ends: 61 [2023-12-16 00:02:23,651 INFO L226 Difference]: Without dead ends: 42 [2023-12-16 00:02:23,653 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-12-16 00:02:23,655 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 32 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 00:02:23,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 55 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:02:23,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2023-12-16 00:02:23,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2023-12-16 00:02:23,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 38 states have (on average 1.3157894736842106) internal successors, (50), 38 states have internal predecessors, (50), 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) [2023-12-16 00:02:23,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 54 transitions. [2023-12-16 00:02:23,668 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 54 transitions. Word has length 16 [2023-12-16 00:02:23,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:02:23,668 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 54 transitions. [2023-12-16 00:02:23,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 6 states have internal predecessors, (24), 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) [2023-12-16 00:02:23,668 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 54 transitions. [2023-12-16 00:02:23,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-16 00:02:23,669 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:02:23,669 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:02:23,674 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-16 00:02:23,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:02:23,875 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:02:23,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:02:23,875 INFO L85 PathProgramCache]: Analyzing trace with hash -400249711, now seen corresponding path program 2 times [2023-12-16 00:02:23,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:02:23,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728935605] [2023-12-16 00:02:23,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:02:23,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:02:23,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:02:24,013 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-12-16 00:02:24,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:02:24,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728935605] [2023-12-16 00:02:24,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728935605] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:02:24,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:02:24,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 00:02:24,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273274369] [2023-12-16 00:02:24,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:02:24,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 00:02:24,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:02:24,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 00:02:24,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-16 00:02:24,016 INFO L87 Difference]: Start difference. First operand 42 states and 54 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 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) [2023-12-16 00:02:24,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:02:24,042 INFO L93 Difference]: Finished difference Result 89 states and 115 transitions. [2023-12-16 00:02:24,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 00:02:24,043 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 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 34 [2023-12-16 00:02:24,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:02:24,044 INFO L225 Difference]: With dead ends: 89 [2023-12-16 00:02:24,044 INFO L226 Difference]: Without dead ends: 76 [2023-12-16 00:02:24,044 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-16 00:02:24,045 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 9 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 00:02:24,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 54 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:02:24,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2023-12-16 00:02:24,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 69. [2023-12-16 00:02:24,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 65 states have (on average 1.323076923076923) internal successors, (86), 65 states have internal predecessors, (86), 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) [2023-12-16 00:02:24,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 90 transitions. [2023-12-16 00:02:24,054 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 90 transitions. Word has length 34 [2023-12-16 00:02:24,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:02:24,054 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 90 transitions. [2023-12-16 00:02:24,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 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) [2023-12-16 00:02:24,054 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 90 transitions. [2023-12-16 00:02:24,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-16 00:02:24,055 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:02:24,055 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:02:24,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-16 00:02:24,057 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:02:24,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:02:24,058 INFO L85 PathProgramCache]: Analyzing trace with hash 1405188623, now seen corresponding path program 1 times [2023-12-16 00:02:24,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:02:24,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046494357] [2023-12-16 00:02:24,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:02:24,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:02:24,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:02:24,210 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-16 00:02:24,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:02:24,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046494357] [2023-12-16 00:02:24,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046494357] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 00:02:24,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1741309472] [2023-12-16 00:02:24,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:02:24,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:02:24,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:02:24,218 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 00:02:24,218 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-16 00:02:24,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:02:24,314 INFO L262 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 00:02:24,321 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 00:02:24,358 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-16 00:02:24,358 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 00:02:24,413 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-16 00:02:24,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1741309472] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 00:02:24,414 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 00:02:24,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-12-16 00:02:24,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821638766] [2023-12-16 00:02:24,414 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 00:02:24,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-16 00:02:24,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:02:24,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-16 00:02:24,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-12-16 00:02:24,415 INFO L87 Difference]: Start difference. First operand 69 states and 90 transitions. Second operand has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 12 states have internal predecessors, (42), 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) [2023-12-16 00:02:24,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:02:24,518 INFO L93 Difference]: Finished difference Result 185 states and 266 transitions. [2023-12-16 00:02:24,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-16 00:02:24,518 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 12 states have internal predecessors, (42), 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 34 [2023-12-16 00:02:24,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:02:24,519 INFO L225 Difference]: With dead ends: 185 [2023-12-16 00:02:24,519 INFO L226 Difference]: Without dead ends: 141 [2023-12-16 00:02:24,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-12-16 00:02:24,520 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 89 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 00:02:24,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 67 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 00:02:24,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2023-12-16 00:02:24,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2023-12-16 00:02:24,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 137 states have (on average 1.3284671532846715) internal successors, (182), 137 states have internal predecessors, (182), 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) [2023-12-16 00:02:24,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 186 transitions. [2023-12-16 00:02:24,539 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 186 transitions. Word has length 34 [2023-12-16 00:02:24,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:02:24,539 INFO L495 AbstractCegarLoop]: Abstraction has 141 states and 186 transitions. [2023-12-16 00:02:24,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 12 states have internal predecessors, (42), 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) [2023-12-16 00:02:24,539 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 186 transitions. [2023-12-16 00:02:24,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-12-16 00:02:24,543 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:02:24,543 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:02:24,548 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-16 00:02:24,747 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 [2023-12-16 00:02:24,747 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:02:24,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:02:24,748 INFO L85 PathProgramCache]: Analyzing trace with hash -563152689, now seen corresponding path program 2 times [2023-12-16 00:02:24,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:02:24,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186180186] [2023-12-16 00:02:24,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:02:24,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:02:24,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:02:25,054 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-12-16 00:02:25,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:02:25,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186180186] [2023-12-16 00:02:25,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186180186] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 00:02:25,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [759009698] [2023-12-16 00:02:25,055 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 00:02:25,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:02:25,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:02:25,056 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 00:02:25,086 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-16 00:02:25,156 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-16 00:02:25,156 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 00:02:25,157 INFO L262 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-16 00:02:25,160 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 00:02:25,213 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-12-16 00:02:25,213 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 00:02:25,387 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-12-16 00:02:25,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [759009698] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 00:02:25,387 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 00:02:25,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2023-12-16 00:02:25,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844908149] [2023-12-16 00:02:25,388 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 00:02:25,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-16 00:02:25,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:02:25,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-16 00:02:25,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2023-12-16 00:02:25,389 INFO L87 Difference]: Start difference. First operand 141 states and 186 transitions. Second operand has 25 states, 25 states have (on average 3.12) internal successors, (78), 24 states have internal predecessors, (78), 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) [2023-12-16 00:02:25,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:02:25,562 INFO L93 Difference]: Finished difference Result 365 states and 530 transitions. [2023-12-16 00:02:25,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-16 00:02:25,562 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.12) internal successors, (78), 24 states have internal predecessors, (78), 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 70 [2023-12-16 00:02:25,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:02:25,565 INFO L225 Difference]: With dead ends: 365 [2023-12-16 00:02:25,565 INFO L226 Difference]: Without dead ends: 285 [2023-12-16 00:02:25,566 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2023-12-16 00:02:25,567 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 197 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 00:02:25,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 119 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 00:02:25,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2023-12-16 00:02:25,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 285. [2023-12-16 00:02:25,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 281 states have (on average 1.3309608540925266) internal successors, (374), 281 states have internal predecessors, (374), 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) [2023-12-16 00:02:25,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 378 transitions. [2023-12-16 00:02:25,594 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 378 transitions. Word has length 70 [2023-12-16 00:02:25,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:02:25,596 INFO L495 AbstractCegarLoop]: Abstraction has 285 states and 378 transitions. [2023-12-16 00:02:25,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.12) internal successors, (78), 24 states have internal predecessors, (78), 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) [2023-12-16 00:02:25,596 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 378 transitions. [2023-12-16 00:02:25,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-16 00:02:25,601 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:02:25,602 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 22, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:02:25,611 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-16 00:02:25,806 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 [2023-12-16 00:02:25,807 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:02:25,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:02:25,807 INFO L85 PathProgramCache]: Analyzing trace with hash -1851746737, now seen corresponding path program 3 times [2023-12-16 00:02:25,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:02:25,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971397495] [2023-12-16 00:02:25,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:02:25,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:02:25,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:02:26,529 INFO L134 CoverageAnalysis]: Checked inductivity of 1430 backedges. 0 proven. 715 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2023-12-16 00:02:26,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:02:26,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971397495] [2023-12-16 00:02:26,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971397495] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 00:02:26,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [729923152] [2023-12-16 00:02:26,530 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-16 00:02:26,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:02:26,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:02:26,531 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 00:02:26,544 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-16 00:02:26,623 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-12-16 00:02:26,624 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 00:02:26,624 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-16 00:02:26,635 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 00:02:26,732 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2023-12-16 00:02:26,738 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-16 00:02:26,845 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-12-16 00:02:26,885 INFO L134 CoverageAnalysis]: Checked inductivity of 1430 backedges. 21 proven. 43 refuted. 0 times theorem prover too weak. 1366 trivial. 0 not checked. [2023-12-16 00:02:26,885 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 00:02:27,028 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 22 [2023-12-16 00:02:27,031 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 28 [2023-12-16 00:02:27,111 INFO L134 CoverageAnalysis]: Checked inductivity of 1430 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 1366 trivial. 0 not checked. [2023-12-16 00:02:27,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [729923152] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 00:02:27,112 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 00:02:27,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 8, 8] total 35 [2023-12-16 00:02:27,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481528246] [2023-12-16 00:02:27,112 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 00:02:27,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-12-16 00:02:27,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:02:27,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-12-16 00:02:27,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=328, Invalid=932, Unknown=0, NotChecked=0, Total=1260 [2023-12-16 00:02:27,114 INFO L87 Difference]: Start difference. First operand 285 states and 378 transitions. Second operand has 36 states, 35 states have (on average 2.8857142857142857) internal successors, (101), 33 states have internal predecessors, (101), 2 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:02:28,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:02:28,705 INFO L93 Difference]: Finished difference Result 620 states and 830 transitions. [2023-12-16 00:02:28,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2023-12-16 00:02:28,706 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 2.8857142857142857) internal successors, (101), 33 states have internal predecessors, (101), 2 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 142 [2023-12-16 00:02:28,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:02:28,707 INFO L225 Difference]: With dead ends: 620 [2023-12-16 00:02:28,707 INFO L226 Difference]: Without dead ends: 468 [2023-12-16 00:02:28,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 270 SyntacticMatches, 2 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3099 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=2456, Invalid=8886, Unknown=0, NotChecked=0, Total=11342 [2023-12-16 00:02:28,711 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 1017 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 587 mSolverCounterSat, 227 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1021 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 227 IncrementalHoareTripleChecker+Valid, 587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 00:02:28,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1021 Valid, 284 Invalid, 814 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [227 Valid, 587 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 00:02:28,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2023-12-16 00:02:28,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 440. [2023-12-16 00:02:28,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 434 states have (on average 1.3317972350230414) internal successors, (578), 435 states have internal predecessors, (578), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-16 00:02:28,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 584 transitions. [2023-12-16 00:02:28,721 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 584 transitions. Word has length 142 [2023-12-16 00:02:28,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:02:28,722 INFO L495 AbstractCegarLoop]: Abstraction has 440 states and 584 transitions. [2023-12-16 00:02:28,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 2.8857142857142857) internal successors, (101), 33 states have internal predecessors, (101), 2 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:02:28,722 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 584 transitions. [2023-12-16 00:02:28,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-16 00:02:28,723 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:02:28,723 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 23, 23, 21, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:02:28,730 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-16 00:02:28,926 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 [2023-12-16 00:02:28,926 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:02:28,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:02:28,927 INFO L85 PathProgramCache]: Analyzing trace with hash -1993603563, now seen corresponding path program 4 times [2023-12-16 00:02:28,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:02:28,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572261552] [2023-12-16 00:02:28,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:02:28,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:02:28,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:02:29,606 INFO L134 CoverageAnalysis]: Checked inductivity of 1564 backedges. 0 proven. 782 refuted. 0 times theorem prover too weak. 782 trivial. 0 not checked. [2023-12-16 00:02:29,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:02:29,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572261552] [2023-12-16 00:02:29,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572261552] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 00:02:29,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1058124132] [2023-12-16 00:02:29,607 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-16 00:02:29,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:02:29,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:02:29,608 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 00:02:29,608 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-16 00:02:29,941 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-16 00:02:29,941 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 00:02:29,945 INFO L262 TraceCheckSpWp]: Trace formula consists of 637 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-16 00:02:29,949 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 00:02:30,042 INFO L134 CoverageAnalysis]: Checked inductivity of 1564 backedges. 0 proven. 782 refuted. 0 times theorem prover too weak. 782 trivial. 0 not checked. [2023-12-16 00:02:30,042 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 00:02:30,741 INFO L134 CoverageAnalysis]: Checked inductivity of 1564 backedges. 0 proven. 782 refuted. 0 times theorem prover too weak. 782 trivial. 0 not checked. [2023-12-16 00:02:30,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1058124132] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 00:02:30,741 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 00:02:30,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 50 [2023-12-16 00:02:30,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78859484] [2023-12-16 00:02:30,742 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 00:02:30,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2023-12-16 00:02:30,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:02:30,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2023-12-16 00:02:30,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2023-12-16 00:02:30,744 INFO L87 Difference]: Start difference. First operand 440 states and 584 transitions. Second operand has 51 states, 51 states have (on average 3.0588235294117645) internal successors, (156), 50 states have internal predecessors, (156), 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) [2023-12-16 00:02:31,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:02:31,199 INFO L93 Difference]: Finished difference Result 1126 states and 1645 transitions. [2023-12-16 00:02:31,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-12-16 00:02:31,200 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 3.0588235294117645) internal successors, (156), 50 states have internal predecessors, (156), 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 148 [2023-12-16 00:02:31,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:02:31,203 INFO L225 Difference]: With dead ends: 1126 [2023-12-16 00:02:31,203 INFO L226 Difference]: Without dead ends: 890 [2023-12-16 00:02:31,205 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 270 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2023-12-16 00:02:31,205 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 624 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 190 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 624 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 190 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 00:02:31,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [624 Valid, 171 Invalid, 505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [190 Valid, 315 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 00:02:31,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 890 states. [2023-12-16 00:02:31,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 890 to 890. [2023-12-16 00:02:31,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 890 states, 884 states have (on average 1.332579185520362) internal successors, (1178), 885 states have internal predecessors, (1178), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-16 00:02:31,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 890 states to 890 states and 1184 transitions. [2023-12-16 00:02:31,220 INFO L78 Accepts]: Start accepts. Automaton has 890 states and 1184 transitions. Word has length 148 [2023-12-16 00:02:31,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:02:31,221 INFO L495 AbstractCegarLoop]: Abstraction has 890 states and 1184 transitions. [2023-12-16 00:02:31,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 3.0588235294117645) internal successors, (156), 50 states have internal predecessors, (156), 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) [2023-12-16 00:02:31,221 INFO L276 IsEmpty]: Start isEmpty. Operand 890 states and 1184 transitions. [2023-12-16 00:02:31,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2023-12-16 00:02:31,223 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:02:31,223 INFO L195 NwaCegarLoop]: trace histogram [48, 48, 48, 48, 48, 46, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:02:31,234 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-16 00:02:31,431 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 [2023-12-16 00:02:31,432 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:02:31,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:02:31,433 INFO L85 PathProgramCache]: Analyzing trace with hash -593787823, now seen corresponding path program 5 times [2023-12-16 00:02:31,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:02:31,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085364980] [2023-12-16 00:02:31,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:02:31,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:02:31,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:02:33,472 INFO L134 CoverageAnalysis]: Checked inductivity of 6864 backedges. 0 proven. 3432 refuted. 0 times theorem prover too weak. 3432 trivial. 0 not checked. [2023-12-16 00:02:33,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:02:33,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085364980] [2023-12-16 00:02:33,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085364980] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 00:02:33,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [499494015] [2023-12-16 00:02:33,473 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-16 00:02:33,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:02:33,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:02:33,474 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 00:02:33,501 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process Received shutdown request... [2023-12-16 00:03:39,056 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 00:03:39,056 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 00:03:40,070 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 [2023-12-16 00:03:40,260 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forcibly destroying the process [2023-12-16 00:03:40,267 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 137 [2023-12-16 00:03:40,268 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 00:03:40,268 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-16 00:03:40,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2023-12-16 00:03:40,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636032137] [2023-12-16 00:03:40,269 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-16 00:03:40,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2023-12-16 00:03:40,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:03:40,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2023-12-16 00:03:40,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2023-12-16 00:03:40,271 INFO L87 Difference]: Start difference. First operand 890 states and 1184 transitions. Second operand has 51 states, 51 states have (on average 3.0588235294117645) internal successors, (156), 50 states have internal predecessors, (156), 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) [2023-12-16 00:03:40,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 00:03:40,272 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2023-12-16 00:03:40,273 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 00:03:40,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:03:40,274 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 00:03:40,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-16 00:03:40,275 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (890states) and FLOYD_HOARE automaton (currently 2 states, 51 states before enhancement),while ReachableStatesComputation was computing reachable states (1 states constructed, input type IntersectNwa). [2023-12-16 00:03:40,278 INFO L445 BasicCegarLoop]: Path program histogram: [5, 2, 1, 1] [2023-12-16 00:03:40,279 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 00:03:40,281 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 12:03:40 BoogieIcfgContainer [2023-12-16 00:03:40,281 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 00:03:40,281 INFO L158 Benchmark]: Toolchain (without parser) took 77864.72ms. Allocated memory was 194.0MB in the beginning and 419.4MB in the end (delta: 225.4MB). Free memory was 144.8MB in the beginning and 352.4MB in the end (delta: -207.6MB). Peak memory consumption was 19.3MB. Max. memory is 8.0GB. [2023-12-16 00:03:40,281 INFO L158 Benchmark]: CDTParser took 0.46ms. Allocated memory is still 194.0MB. Free memory is still 146.8MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 00:03:40,281 INFO L158 Benchmark]: CACSL2BoogieTranslator took 156.96ms. Allocated memory is still 194.0MB. Free memory was 144.4MB in the beginning and 133.6MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-16 00:03:40,282 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.15ms. Allocated memory is still 194.0MB. Free memory was 133.3MB in the beginning and 131.8MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-16 00:03:40,282 INFO L158 Benchmark]: Boogie Preprocessor took 32.96ms. Allocated memory is still 194.0MB. Free memory was 131.8MB in the beginning and 129.8MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-16 00:03:40,282 INFO L158 Benchmark]: RCFGBuilder took 274.82ms. Allocated memory is still 194.0MB. Free memory was 129.8MB in the beginning and 116.5MB in the end (delta: 13.3MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-12-16 00:03:40,282 INFO L158 Benchmark]: TraceAbstraction took 77374.44ms. Allocated memory was 194.0MB in the beginning and 419.4MB in the end (delta: 225.4MB). Free memory was 115.8MB in the beginning and 352.4MB in the end (delta: -236.6MB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 00:03:40,283 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.46ms. Allocated memory is still 194.0MB. Free memory is still 146.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 156.96ms. Allocated memory is still 194.0MB. Free memory was 144.4MB in the beginning and 133.6MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 20.15ms. Allocated memory is still 194.0MB. Free memory was 133.3MB in the beginning and 131.8MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 32.96ms. Allocated memory is still 194.0MB. Free memory was 131.8MB in the beginning and 129.8MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 274.82ms. Allocated memory is still 194.0MB. Free memory was 129.8MB in the beginning and 116.5MB in the end (delta: 13.3MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 77374.44ms. Allocated memory was 194.0MB in the beginning and 419.4MB in the end (delta: 225.4MB). Free memory was 115.8MB in the beginning and 352.4MB in the end (delta: -236.6MB). There was no memory consumed. 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: 14]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 14). Cancelled while NwaCegarLoop was constructing difference of abstraction (890states) and FLOYD_HOARE automaton (currently 2 states, 51 states before enhancement),while ReachableStatesComputation was computing reachable states (1 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 77.3s, OverallIterations: 9, TraceHistogramMax: 48, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 2.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1980 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1974 mSDsluCounter, 811 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 645 mSDsCounter, 534 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1221 IncrementalHoareTripleChecker+Invalid, 1755 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 534 mSolverCounterUnsat, 166 mSDtfsCounter, 1221 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1008 GetRequests, 761 SyntacticMatches, 2 SemanticMatches, 245 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3251 ImplicationChecksByTransitivity, 3.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=890occurred in iteration=8, InterpolantAutomatonStates: 203, 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, 39 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 5.6s InterpolantComputationTime, 1172 NumberOfCodeBlocks, 1052 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 1563 ConstructedInterpolants, 0 QuantifiedInterpolants, 3935 SizeOfPredicates, 15 NumberOfNonLiveVariables, 1355 ConjunctsInSsa, 61 ConjunctsInUnsatCore, 19 InterpolantComputations, 3 PerfectInterpolantSequences, 9794/16898 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