/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 [2023-12-20 06:36:17,718 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 06:36:17,798 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 06:36:17,804 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 06:36:17,805 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 06:36:17,830 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 06:36:17,831 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 06:36:17,831 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 06:36:17,832 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 06:36:17,835 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 06:36:17,835 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 06:36:17,836 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 06:36:17,837 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 06:36:17,838 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 06:36:17,838 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 06:36:17,838 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 06:36:17,838 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 06:36:17,839 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 06:36:17,839 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 06:36:17,840 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 06:36:17,840 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 06:36:17,841 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 06:36:17,841 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 06:36:17,841 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 06:36:17,841 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 06:36:17,841 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 06:36:17,841 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 06:36:17,841 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 06:36:17,842 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 06:36:17,842 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 06:36:17,842 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 06:36:17,842 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 06:36:17,842 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 06:36:17,842 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 06:36:17,843 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 06:36:17,843 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 06:36:17,843 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 06:36:17,843 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 06:36:17,843 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 06:36:17,843 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 06:36:17,843 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 06:36:17,844 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 06:36:17,844 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 06:36:17,844 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-20 06:36:18,072 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 06:36:18,095 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 06:36:18,097 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 06:36:18,098 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 06:36:18,098 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 06:36:18,099 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_partition_ground-1.i [2023-12-20 06:36:19,322 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 06:36:19,492 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 06:36:19,493 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_partition_ground-1.i [2023-12-20 06:36:19,498 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c522c5ee/f161f0f387d54e408306aeddb947b036/FLAG4abf80027 [2023-12-20 06:36:19,509 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c522c5ee/f161f0f387d54e408306aeddb947b036 [2023-12-20 06:36:19,511 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 06:36:19,511 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 06:36:19,512 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 06:36:19,513 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 06:36:19,519 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 06:36:19,520 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 06:36:19" (1/1) ... [2023-12-20 06:36:19,521 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21d14d83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 06:36:19, skipping insertion in model container [2023-12-20 06:36:19,521 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 06:36:19" (1/1) ... [2023-12-20 06:36:19,541 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 06:36:19,659 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] [2023-12-20 06:36:19,672 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 06:36:19,680 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 06:36:19,691 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] [2023-12-20 06:36:19,698 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 06:36:19,710 INFO L206 MainTranslator]: Completed translation [2023-12-20 06:36:19,711 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 06:36:19 WrapperNode [2023-12-20 06:36:19,711 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 06:36:19,712 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 06:36:19,712 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 06:36:19,712 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 06:36:19,718 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 06:36:19" (1/1) ... [2023-12-20 06:36:19,723 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 06:36:19" (1/1) ... [2023-12-20 06:36:19,739 INFO L138 Inliner]: procedures = 16, calls = 26, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 82 [2023-12-20 06:36:19,740 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 06:36:19,740 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 06:36:19,741 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 06:36:19,741 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 06:36:19,749 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 06:36:19" (1/1) ... [2023-12-20 06:36:19,749 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 06:36:19" (1/1) ... [2023-12-20 06:36:19,752 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 06:36:19" (1/1) ... [2023-12-20 06:36:19,766 INFO L175 MemorySlicer]: Split 11 memory accesses to 4 slices as follows [2, 2, 5, 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]. [2023-12-20 06:36:19,766 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 06:36:19" (1/1) ... [2023-12-20 06:36:19,767 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 06:36:19" (1/1) ... [2023-12-20 06:36:19,771 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 06:36:19" (1/1) ... [2023-12-20 06:36:19,775 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 06:36:19" (1/1) ... [2023-12-20 06:36:19,776 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 06:36:19" (1/1) ... [2023-12-20 06:36:19,777 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 06:36:19" (1/1) ... [2023-12-20 06:36:19,779 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 06:36:19,780 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 06:36:19,780 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 06:36:19,780 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 06:36:19,781 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 06:36:19" (1/1) ... [2023-12-20 06:36:19,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 06:36:19,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 06:36:19,809 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-20 06:36:19,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-20 06:36:19,838 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 06:36:19,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 06:36:19,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-20 06:36:19,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-12-20 06:36:19,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-12-20 06:36:19,839 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-20 06:36:19,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-12-20 06:36:19,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-12-20 06:36:19,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-12-20 06:36:19,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-12-20 06:36:19,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 06:36:19,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 06:36:19,840 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-12-20 06:36:19,840 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-12-20 06:36:19,841 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-12-20 06:36:19,841 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-12-20 06:36:19,841 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-20 06:36:19,841 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-20 06:36:19,841 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-20 06:36:19,918 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 06:36:19,921 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 06:36:20,127 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 06:36:20,152 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 06:36:20,152 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-12-20 06:36:20,153 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 06:36:20 BoogieIcfgContainer [2023-12-20 06:36:20,153 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 06:36:20,155 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 06:36:20,156 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 06:36:20,159 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 06:36:20,159 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 06:36:19" (1/3) ... [2023-12-20 06:36:20,160 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@edff39e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 06:36:20, skipping insertion in model container [2023-12-20 06:36:20,160 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 06:36:19" (2/3) ... [2023-12-20 06:36:20,160 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@edff39e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 06:36:20, skipping insertion in model container [2023-12-20 06:36:20,160 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 06:36:20" (3/3) ... [2023-12-20 06:36:20,161 INFO L112 eAbstractionObserver]: Analyzing ICFG standard_partition_ground-1.i [2023-12-20 06:36:20,176 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 06:36:20,176 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-20 06:36:20,216 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 06:36:20,221 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;@1996b644, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 06:36:20,221 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-20 06:36:20,224 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) [2023-12-20 06:36:20,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-20 06:36:20,229 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 06:36:20,229 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 06:36:20,230 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 06:36:20,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 06:36:20,234 INFO L85 PathProgramCache]: Analyzing trace with hash 1298611175, now seen corresponding path program 1 times [2023-12-20 06:36:20,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 06:36:20,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351791596] [2023-12-20 06:36:20,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 06:36:20,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 06:36:20,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 06:36:20,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 06:36:20,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 06:36:20,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351791596] [2023-12-20 06:36:20,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351791596] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 06:36:20,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 06:36:20,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 06:36:20,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712318534] [2023-12-20 06:36:20,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 06:36:20,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-20 06:36:20,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 06:36:20,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-20 06:36:20,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 06:36:20,436 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) [2023-12-20 06:36:20,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 06:36:20,468 INFO L93 Difference]: Finished difference Result 44 states and 65 transitions. [2023-12-20 06:36:20,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-20 06:36:20,470 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 [2023-12-20 06:36:20,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 06:36:20,476 INFO L225 Difference]: With dead ends: 44 [2023-12-20 06:36:20,476 INFO L226 Difference]: Without dead ends: 22 [2023-12-20 06:36:20,478 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 [2023-12-20 06:36:20,482 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 [2023-12-20 06:36:20,483 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] [2023-12-20 06:36:20,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2023-12-20 06:36:20,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2023-12-20 06:36:20,513 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) [2023-12-20 06:36:20,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 28 transitions. [2023-12-20 06:36:20,516 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 28 transitions. Word has length 10 [2023-12-20 06:36:20,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 06:36:20,516 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 28 transitions. [2023-12-20 06:36:20,517 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) [2023-12-20 06:36:20,517 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 28 transitions. [2023-12-20 06:36:20,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-20 06:36:20,518 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 06:36:20,518 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 06:36:20,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 06:36:20,519 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 06:36:20,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 06:36:20,519 INFO L85 PathProgramCache]: Analyzing trace with hash -1466832111, now seen corresponding path program 1 times [2023-12-20 06:36:20,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 06:36:20,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518944021] [2023-12-20 06:36:20,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 06:36:20,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 06:36:20,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 06:36:20,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 06:36:20,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 06:36:20,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518944021] [2023-12-20 06:36:20,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518944021] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 06:36:20,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 06:36:20,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 06:36:20,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717987099] [2023-12-20 06:36:20,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 06:36:20,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 06:36:20,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 06:36:20,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 06:36:20,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 06:36:20,614 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) [2023-12-20 06:36:20,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 06:36:20,656 INFO L93 Difference]: Finished difference Result 46 states and 60 transitions. [2023-12-20 06:36:20,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 06:36:20,656 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 [2023-12-20 06:36:20,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 06:36:20,657 INFO L225 Difference]: With dead ends: 46 [2023-12-20 06:36:20,657 INFO L226 Difference]: Without dead ends: 28 [2023-12-20 06:36:20,657 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 06:36:20,658 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 [2023-12-20 06:36:20,659 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] [2023-12-20 06:36:20,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-12-20 06:36:20,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 24. [2023-12-20 06:36:20,662 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) [2023-12-20 06:36:20,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 30 transitions. [2023-12-20 06:36:20,663 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 30 transitions. Word has length 10 [2023-12-20 06:36:20,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 06:36:20,663 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 30 transitions. [2023-12-20 06:36:20,664 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) [2023-12-20 06:36:20,664 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 30 transitions. [2023-12-20 06:36:20,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-20 06:36:20,664 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 06:36:20,664 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 06:36:20,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 06:36:20,665 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 06:36:20,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 06:36:20,665 INFO L85 PathProgramCache]: Analyzing trace with hash -800811499, now seen corresponding path program 1 times [2023-12-20 06:36:20,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 06:36:20,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772049667] [2023-12-20 06:36:20,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 06:36:20,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 06:36:20,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 06:36:20,793 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-20 06:36:20,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 06:36:20,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772049667] [2023-12-20 06:36:20,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772049667] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 06:36:20,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1942177403] [2023-12-20 06:36:20,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 06:36:20,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 06:36:20,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 06:36:20,802 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 06:36:20,813 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-20 06:36:20,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 06:36:20,885 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-20 06:36:20,889 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 06:36:20,935 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-20 06:36:20,938 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 06:36:20,974 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-20 06:36:20,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1942177403] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 06:36:20,975 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 06:36:20,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-12-20 06:36:20,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344917648] [2023-12-20 06:36:20,975 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 06:36:20,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 06:36:20,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 06:36:20,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 06:36:20,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-12-20 06:36:20,977 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) [2023-12-20 06:36:21,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 06:36:21,054 INFO L93 Difference]: Finished difference Result 61 states and 83 transitions. [2023-12-20 06:36:21,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 06:36:21,055 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 [2023-12-20 06:36:21,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 06:36:21,056 INFO L225 Difference]: With dead ends: 61 [2023-12-20 06:36:21,057 INFO L226 Difference]: Without dead ends: 42 [2023-12-20 06:36:21,058 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 [2023-12-20 06:36:21,059 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, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 06:36:21,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 55 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 06:36:21,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2023-12-20 06:36:21,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2023-12-20 06:36:21,064 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) [2023-12-20 06:36:21,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 54 transitions. [2023-12-20 06:36:21,065 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 54 transitions. Word has length 16 [2023-12-20 06:36:21,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 06:36:21,065 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 54 transitions. [2023-12-20 06:36:21,065 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) [2023-12-20 06:36:21,065 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 54 transitions. [2023-12-20 06:36:21,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-20 06:36:21,066 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 06:36:21,066 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 06:36:21,076 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-20 06:36:21,274 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 [2023-12-20 06:36:21,275 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 06:36:21,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 06:36:21,275 INFO L85 PathProgramCache]: Analyzing trace with hash -400249711, now seen corresponding path program 2 times [2023-12-20 06:36:21,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 06:36:21,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128482358] [2023-12-20 06:36:21,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 06:36:21,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 06:36:21,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 06:36:21,443 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-12-20 06:36:21,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 06:36:21,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128482358] [2023-12-20 06:36:21,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128482358] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 06:36:21,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 06:36:21,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 06:36:21,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423850684] [2023-12-20 06:36:21,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 06:36:21,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 06:36:21,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 06:36:21,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 06:36:21,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 06:36:21,451 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) [2023-12-20 06:36:21,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 06:36:21,490 INFO L93 Difference]: Finished difference Result 89 states and 115 transitions. [2023-12-20 06:36:21,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 06:36:21,490 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 [2023-12-20 06:36:21,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 06:36:21,491 INFO L225 Difference]: With dead ends: 89 [2023-12-20 06:36:21,491 INFO L226 Difference]: Without dead ends: 76 [2023-12-20 06:36:21,492 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 [2023-12-20 06:36:21,493 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 [2023-12-20 06:36:21,493 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] [2023-12-20 06:36:21,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2023-12-20 06:36:21,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 69. [2023-12-20 06:36:21,502 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) [2023-12-20 06:36:21,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 90 transitions. [2023-12-20 06:36:21,504 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 90 transitions. Word has length 34 [2023-12-20 06:36:21,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 06:36:21,504 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 90 transitions. [2023-12-20 06:36:21,504 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) [2023-12-20 06:36:21,504 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 90 transitions. [2023-12-20 06:36:21,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-20 06:36:21,505 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 06:36:21,505 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 06:36:21,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 06:36:21,505 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 06:36:21,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 06:36:21,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1405188623, now seen corresponding path program 1 times [2023-12-20 06:36:21,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 06:36:21,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929772377] [2023-12-20 06:36:21,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 06:36:21,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 06:36:21,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 06:36:21,701 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-20 06:36:21,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 06:36:21,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929772377] [2023-12-20 06:36:21,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929772377] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 06:36:21,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [971307402] [2023-12-20 06:36:21,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 06:36:21,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 06:36:21,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 06:36:21,704 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 06:36:21,727 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-20 06:36:21,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 06:36:21,801 INFO L262 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-20 06:36:21,809 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 06:36:21,854 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-20 06:36:21,854 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 06:36:21,934 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-20 06:36:21,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [971307402] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 06:36:21,935 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 06:36:21,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-12-20 06:36:21,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631090686] [2023-12-20 06:36:21,935 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 06:36:21,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-20 06:36:21,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 06:36:21,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-20 06:36:21,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-12-20 06:36:21,938 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) [2023-12-20 06:36:22,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 06:36:22,068 INFO L93 Difference]: Finished difference Result 185 states and 266 transitions. [2023-12-20 06:36:22,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-20 06:36:22,068 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 [2023-12-20 06:36:22,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 06:36:22,070 INFO L225 Difference]: With dead ends: 185 [2023-12-20 06:36:22,070 INFO L226 Difference]: Without dead ends: 141 [2023-12-20 06:36:22,070 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 [2023-12-20 06:36:22,078 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 [2023-12-20 06:36:22,078 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] [2023-12-20 06:36:22,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2023-12-20 06:36:22,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2023-12-20 06:36:22,094 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) [2023-12-20 06:36:22,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 186 transitions. [2023-12-20 06:36:22,095 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 186 transitions. Word has length 34 [2023-12-20 06:36:22,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 06:36:22,096 INFO L495 AbstractCegarLoop]: Abstraction has 141 states and 186 transitions. [2023-12-20 06:36:22,096 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) [2023-12-20 06:36:22,096 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 186 transitions. [2023-12-20 06:36:22,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-12-20 06:36:22,098 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 06:36:22,098 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 06:36:22,106 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-20 06:36:22,305 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 [2023-12-20 06:36:22,305 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 06:36:22,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 06:36:22,306 INFO L85 PathProgramCache]: Analyzing trace with hash -563152689, now seen corresponding path program 2 times [2023-12-20 06:36:22,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 06:36:22,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975222506] [2023-12-20 06:36:22,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 06:36:22,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 06:36:22,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 06:36:22,651 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-12-20 06:36:22,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 06:36:22,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975222506] [2023-12-20 06:36:22,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975222506] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 06:36:22,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1255193954] [2023-12-20 06:36:22,652 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-20 06:36:22,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 06:36:22,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 06:36:22,653 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 06:36:22,674 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-20 06:36:22,795 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-20 06:36:22,796 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 06:36:22,797 INFO L262 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-20 06:36:22,801 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 06:36:22,857 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-12-20 06:36:22,857 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 06:36:23,069 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-12-20 06:36:23,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1255193954] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 06:36:23,069 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 06:36:23,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2023-12-20 06:36:23,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541826203] [2023-12-20 06:36:23,070 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 06:36:23,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-20 06:36:23,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 06:36:23,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-20 06:36:23,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2023-12-20 06:36:23,072 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) [2023-12-20 06:36:23,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 06:36:23,280 INFO L93 Difference]: Finished difference Result 365 states and 530 transitions. [2023-12-20 06:36:23,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-20 06:36:23,280 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 [2023-12-20 06:36:23,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 06:36:23,282 INFO L225 Difference]: With dead ends: 365 [2023-12-20 06:36:23,282 INFO L226 Difference]: Without dead ends: 285 [2023-12-20 06:36:23,283 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 [2023-12-20 06:36:23,284 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, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 06:36:23,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 119 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 06:36:23,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2023-12-20 06:36:23,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 285. [2023-12-20 06:36:23,301 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) [2023-12-20 06:36:23,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 378 transitions. [2023-12-20 06:36:23,303 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 378 transitions. Word has length 70 [2023-12-20 06:36:23,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 06:36:23,303 INFO L495 AbstractCegarLoop]: Abstraction has 285 states and 378 transitions. [2023-12-20 06:36:23,303 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) [2023-12-20 06:36:23,303 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 378 transitions. [2023-12-20 06:36:23,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-20 06:36:23,307 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 06:36:23,307 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 22, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 06:36:23,316 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-20 06:36:23,513 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 [2023-12-20 06:36:23,513 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 06:36:23,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 06:36:23,514 INFO L85 PathProgramCache]: Analyzing trace with hash -1851746737, now seen corresponding path program 3 times [2023-12-20 06:36:23,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 06:36:23,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375153697] [2023-12-20 06:36:23,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 06:36:23,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 06:36:23,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 06:36:24,358 INFO L134 CoverageAnalysis]: Checked inductivity of 1430 backedges. 0 proven. 715 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2023-12-20 06:36:24,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 06:36:24,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375153697] [2023-12-20 06:36:24,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375153697] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 06:36:24,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [146077546] [2023-12-20 06:36:24,359 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-20 06:36:24,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 06:36:24,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 06:36:24,360 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 06:36:24,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-20 06:36:24,472 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-12-20 06:36:24,472 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 06:36:24,473 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-20 06:36:24,478 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 06:36:24,604 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 [2023-12-20 06:36:24,612 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 [2023-12-20 06:36:24,738 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 [2023-12-20 06:36:24,791 INFO L134 CoverageAnalysis]: Checked inductivity of 1430 backedges. 21 proven. 43 refuted. 0 times theorem prover too weak. 1366 trivial. 0 not checked. [2023-12-20 06:36:24,791 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 06:36:24,979 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 [2023-12-20 06:36:24,986 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 [2023-12-20 06:36:25,090 INFO L134 CoverageAnalysis]: Checked inductivity of 1430 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 1366 trivial. 0 not checked. [2023-12-20 06:36:25,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [146077546] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 06:36:25,091 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 06:36:25,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 8, 8] total 35 [2023-12-20 06:36:25,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460041619] [2023-12-20 06:36:25,091 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 06:36:25,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-12-20 06:36:25,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 06:36:25,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-12-20 06:36:25,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=328, Invalid=932, Unknown=0, NotChecked=0, Total=1260 [2023-12-20 06:36:25,094 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) [2023-12-20 06:36:27,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 06:36:27,036 INFO L93 Difference]: Finished difference Result 620 states and 830 transitions. [2023-12-20 06:36:27,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2023-12-20 06:36:27,036 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 [2023-12-20 06:36:27,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 06:36:27,039 INFO L225 Difference]: With dead ends: 620 [2023-12-20 06:36:27,039 INFO L226 Difference]: Without dead ends: 468 [2023-12-20 06:36:27,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 270 SyntacticMatches, 2 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3099 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=2456, Invalid=8886, Unknown=0, NotChecked=0, Total=11342 [2023-12-20 06:36:27,048 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 1017 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 587 mSolverCounterSat, 227 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.5s IncrementalHoareTripleChecker+Time [2023-12-20 06:36:27,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1021 Valid, 284 Invalid, 814 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [227 Valid, 587 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-20 06:36:27,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2023-12-20 06:36:27,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 440. [2023-12-20 06:36:27,081 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) [2023-12-20 06:36:27,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 584 transitions. [2023-12-20 06:36:27,082 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 584 transitions. Word has length 142 [2023-12-20 06:36:27,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 06:36:27,085 INFO L495 AbstractCegarLoop]: Abstraction has 440 states and 584 transitions. [2023-12-20 06:36:27,086 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) [2023-12-20 06:36:27,089 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 584 transitions. [2023-12-20 06:36:27,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-20 06:36:27,097 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 06:36:27,097 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 23, 23, 21, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 06:36:27,109 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-20 06:36:27,306 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 [2023-12-20 06:36:27,307 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 06:36:27,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 06:36:27,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1993603563, now seen corresponding path program 4 times [2023-12-20 06:36:27,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 06:36:27,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521874077] [2023-12-20 06:36:27,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 06:36:27,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 06:36:27,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 06:36:28,157 INFO L134 CoverageAnalysis]: Checked inductivity of 1564 backedges. 0 proven. 782 refuted. 0 times theorem prover too weak. 782 trivial. 0 not checked. [2023-12-20 06:36:28,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 06:36:28,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521874077] [2023-12-20 06:36:28,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521874077] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 06:36:28,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [859886299] [2023-12-20 06:36:28,177 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-20 06:36:28,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 06:36:28,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 06:36:28,178 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 06:36:28,190 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-20 06:36:28,530 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-20 06:36:28,530 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 06:36:28,533 INFO L262 TraceCheckSpWp]: Trace formula consists of 637 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-20 06:36:28,537 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 06:36:28,620 INFO L134 CoverageAnalysis]: Checked inductivity of 1564 backedges. 0 proven. 782 refuted. 0 times theorem prover too weak. 782 trivial. 0 not checked. [2023-12-20 06:36:28,620 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 06:36:29,356 INFO L134 CoverageAnalysis]: Checked inductivity of 1564 backedges. 0 proven. 782 refuted. 0 times theorem prover too weak. 782 trivial. 0 not checked. [2023-12-20 06:36:29,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [859886299] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 06:36:29,356 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 06:36:29,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 50 [2023-12-20 06:36:29,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136633686] [2023-12-20 06:36:29,356 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 06:36:29,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2023-12-20 06:36:29,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 06:36:29,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2023-12-20 06:36:29,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2023-12-20 06:36:29,359 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) [2023-12-20 06:36:29,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 06:36:29,898 INFO L93 Difference]: Finished difference Result 1126 states and 1645 transitions. [2023-12-20 06:36:29,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-12-20 06:36:29,898 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 [2023-12-20 06:36:29,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 06:36:29,903 INFO L225 Difference]: With dead ends: 1126 [2023-12-20 06:36:29,903 INFO L226 Difference]: Without dead ends: 890 [2023-12-20 06:36:29,904 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 270 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2023-12-20 06:36:29,905 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 624 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 190 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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 [2023-12-20 06:36:29,905 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] [2023-12-20 06:36:29,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 890 states. [2023-12-20 06:36:29,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 890 to 890. [2023-12-20 06:36:29,925 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) [2023-12-20 06:36:29,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 890 states to 890 states and 1184 transitions. [2023-12-20 06:36:29,928 INFO L78 Accepts]: Start accepts. Automaton has 890 states and 1184 transitions. Word has length 148 [2023-12-20 06:36:29,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 06:36:29,928 INFO L495 AbstractCegarLoop]: Abstraction has 890 states and 1184 transitions. [2023-12-20 06:36:29,928 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) [2023-12-20 06:36:29,928 INFO L276 IsEmpty]: Start isEmpty. Operand 890 states and 1184 transitions. [2023-12-20 06:36:29,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2023-12-20 06:36:29,932 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 06:36:29,932 INFO L195 NwaCegarLoop]: trace histogram [48, 48, 48, 48, 48, 46, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 06:36:29,942 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-20 06:36:30,140 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 [2023-12-20 06:36:30,140 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 06:36:30,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 06:36:30,140 INFO L85 PathProgramCache]: Analyzing trace with hash -593787823, now seen corresponding path program 5 times [2023-12-20 06:36:30,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 06:36:30,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807211288] [2023-12-20 06:36:30,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 06:36:30,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 06:36:30,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 06:36:32,574 INFO L134 CoverageAnalysis]: Checked inductivity of 6864 backedges. 0 proven. 3432 refuted. 0 times theorem prover too weak. 3432 trivial. 0 not checked. [2023-12-20 06:36:32,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 06:36:32,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807211288] [2023-12-20 06:36:32,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807211288] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 06:36:32,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [405395731] [2023-12-20 06:36:32,576 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-20 06:36:32,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 06:36:32,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 06:36:32,577 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 06:36:32,602 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... [2023-12-20 06:50:58,980 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 [2023-12-20 06:50:58,981 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-20 06:50:59,991 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 [2023-12-20 06:51:00,182 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forcibly destroying the process [2023-12-20 06:51:00,229 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 137 [2023-12-20 06:51:00,231 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 06:51:00,231 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-20 06:51:00,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2023-12-20 06:51:00,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527703868] [2023-12-20 06:51:00,231 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-20 06:51:00,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2023-12-20 06:51:00,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 06:51:00,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2023-12-20 06:51:00,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2023-12-20 06:51:00,234 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) [2023-12-20 06:51:00,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-20 06:51:00,236 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 [2023-12-20 06:51:00,237 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 06:51:00,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 06:51:00,238 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-20 06:51:00,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-20 06:51:00,239 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). [2023-12-20 06:51:00,243 INFO L445 BasicCegarLoop]: Path program histogram: [5, 2, 1, 1] [2023-12-20 06:51:00,244 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-20 06:51:00,245 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.12 06:51:00 BoogieIcfgContainer [2023-12-20 06:51:00,245 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-20 06:51:00,246 INFO L158 Benchmark]: Toolchain (without parser) took 880734.26ms. Allocated memory was 306.2MB in the beginning and 442.5MB in the end (delta: 136.3MB). Free memory was 248.2MB in the beginning and 352.8MB in the end (delta: -104.5MB). Peak memory consumption was 32.7MB. Max. memory is 8.0GB. [2023-12-20 06:51:00,246 INFO L158 Benchmark]: CDTParser took 0.56ms. Allocated memory is still 188.7MB. Free memory is still 137.3MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-20 06:51:00,246 INFO L158 Benchmark]: CACSL2BoogieTranslator took 198.66ms. Allocated memory is still 306.2MB. Free memory was 247.9MB in the beginning and 237.1MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-20 06:51:00,246 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.31ms. Allocated memory is still 306.2MB. Free memory was 236.7MB in the beginning and 235.2MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-20 06:51:00,246 INFO L158 Benchmark]: Boogie Preprocessor took 38.44ms. Allocated memory is still 306.2MB. Free memory was 235.2MB in the beginning and 233.2MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-20 06:51:00,246 INFO L158 Benchmark]: RCFGBuilder took 373.66ms. Allocated memory is still 306.2MB. Free memory was 233.2MB in the beginning and 219.6MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-12-20 06:51:00,247 INFO L158 Benchmark]: TraceAbstraction took 880089.88ms. Allocated memory was 306.2MB in the beginning and 442.5MB in the end (delta: 136.3MB). Free memory was 218.9MB in the beginning and 352.8MB in the end (delta: -133.9MB). Peak memory consumption was 3.3MB. Max. memory is 8.0GB. [2023-12-20 06:51:00,251 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.56ms. Allocated memory is still 188.7MB. Free memory is still 137.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 198.66ms. Allocated memory is still 306.2MB. Free memory was 247.9MB in the beginning and 237.1MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 28.31ms. Allocated memory is still 306.2MB. Free memory was 236.7MB in the beginning and 235.2MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 38.44ms. Allocated memory is still 306.2MB. Free memory was 235.2MB in the beginning and 233.2MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 373.66ms. Allocated memory is still 306.2MB. Free memory was 233.2MB in the beginning and 219.6MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 880089.88ms. Allocated memory was 306.2MB in the beginning and 442.5MB in the end (delta: 136.3MB). Free memory was 218.9MB in the beginning and 352.8MB in the end (delta: -133.9MB). Peak memory consumption was 3.3MB. 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: 880.0s, OverallIterations: 9, TraceHistogramMax: 48, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 3.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1980 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1974 mSDsluCounter, 811 SdHoareTripleChecker+Invalid, 1.0s 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, 3.8s 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, 0.7s SatisfiabilityAnalysisTime, 6.6s 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