/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-19.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 21:39:24,593 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 21:39:24,659 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 21:39:24,662 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 21:39:24,663 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 21:39:24,684 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 21:39:24,684 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 21:39:24,684 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 21:39:24,685 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 21:39:24,688 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 21:39:24,688 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 21:39:24,688 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 21:39:24,688 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 21:39:24,689 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 21:39:24,689 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 21:39:24,690 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 21:39:24,690 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 21:39:24,690 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 21:39:24,690 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 21:39:24,691 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 21:39:24,691 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 21:39:24,691 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 21:39:24,691 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 21:39:24,692 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 21:39:24,692 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 21:39:24,692 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 21:39:24,692 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 21:39:24,692 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 21:39:24,693 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 21:39:24,693 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 21:39:24,693 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 21:39:24,693 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 21:39:24,694 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 21:39:24,694 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 21:39:24,694 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 21:39:24,694 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 21:39:24,694 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 21:39:24,694 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 21:39:24,694 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 21:39:24,694 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 21:39:24,694 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 21:39:24,695 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 21:39:24,695 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 21:39:24,695 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 21:39:24,895 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 21:39:24,913 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 21:39:24,915 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 21:39:24,916 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 21:39:24,916 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 21:39:24,917 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-19.i [2023-12-15 21:39:25,899 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 21:39:26,055 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 21:39:26,056 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-19.i [2023-12-15 21:39:26,063 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05497a86f/5ae3110e892840669cd2f9b1f5d420c5/FLAG5cfe4fee7 [2023-12-15 21:39:26,075 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05497a86f/5ae3110e892840669cd2f9b1f5d420c5 [2023-12-15 21:39:26,079 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 21:39:26,080 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 21:39:26,082 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 21:39:26,082 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 21:39:26,085 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 21:39:26,086 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 09:39:26" (1/1) ... [2023-12-15 21:39:26,087 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a9bcff5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:39:26, skipping insertion in model container [2023-12-15 21:39:26,087 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 09:39:26" (1/1) ... [2023-12-15 21:39:26,114 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 21:39:26,251 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-19.i[916,929] [2023-12-15 21:39:26,299 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 21:39:26,307 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 21:39:26,314 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-19.i[916,929] [2023-12-15 21:39:26,339 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 21:39:26,354 INFO L206 MainTranslator]: Completed translation [2023-12-15 21:39:26,354 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:39:26 WrapperNode [2023-12-15 21:39:26,354 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 21:39:26,355 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 21:39:26,355 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 21:39:26,355 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 21:39:26,359 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:39:26" (1/1) ... [2023-12-15 21:39:26,375 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:39:26" (1/1) ... [2023-12-15 21:39:26,410 INFO L138 Inliner]: procedures = 26, calls = 153, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 456 [2023-12-15 21:39:26,411 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 21:39:26,411 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 21:39:26,411 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 21:39:26,411 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 21:39:26,422 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:39:26" (1/1) ... [2023-12-15 21:39:26,422 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:39:26" (1/1) ... [2023-12-15 21:39:26,426 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:39:26" (1/1) ... [2023-12-15 21:39:26,448 INFO L175 MemorySlicer]: Split 124 memory accesses to 2 slices as follows [2, 122]. 98 percent of accesses are in the largest equivalence class. The 14 initializations are split as follows [2, 12]. The 15 writes are split as follows [0, 15]. [2023-12-15 21:39:26,449 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:39:26" (1/1) ... [2023-12-15 21:39:26,449 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:39:26" (1/1) ... [2023-12-15 21:39:26,460 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:39:26" (1/1) ... [2023-12-15 21:39:26,474 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:39:26" (1/1) ... [2023-12-15 21:39:26,476 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:39:26" (1/1) ... [2023-12-15 21:39:26,477 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:39:26" (1/1) ... [2023-12-15 21:39:26,481 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 21:39:26,482 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 21:39:26,482 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 21:39:26,482 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 21:39:26,482 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:39:26" (1/1) ... [2023-12-15 21:39:26,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 21:39:26,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:39:26,520 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-15 21:39:26,541 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-15 21:39:26,548 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 21:39:26,548 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-12-15 21:39:26,548 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-12-15 21:39:26,548 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-12-15 21:39:26,548 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-12-15 21:39:26,548 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-15 21:39:26,550 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-15 21:39:26,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 21:39:26,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-15 21:39:26,550 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 21:39:26,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 21:39:26,643 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 21:39:26,644 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 21:39:27,032 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 21:39:27,070 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 21:39:27,070 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 21:39:27,070 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 09:39:27 BoogieIcfgContainer [2023-12-15 21:39:27,071 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 21:39:27,073 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 21:39:27,073 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 21:39:27,076 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 21:39:27,076 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 09:39:26" (1/3) ... [2023-12-15 21:39:27,077 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b000eb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 09:39:27, skipping insertion in model container [2023-12-15 21:39:27,077 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:39:26" (2/3) ... [2023-12-15 21:39:27,077 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b000eb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 09:39:27, skipping insertion in model container [2023-12-15 21:39:27,077 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 09:39:27" (3/3) ... [2023-12-15 21:39:27,078 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-s_file-19.i [2023-12-15 21:39:27,091 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 21:39:27,092 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 21:39:27,134 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 21:39:27,140 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;@116c1456, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 21:39:27,140 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 21:39:27,143 INFO L276 IsEmpty]: Start isEmpty. Operand has 93 states, 73 states have (on average 1.4383561643835616) internal successors, (105), 74 states have internal predecessors, (105), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-12-15 21:39:27,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-12-15 21:39:27,154 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:39:27,155 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:39:27,155 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:39:27,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:39:27,161 INFO L85 PathProgramCache]: Analyzing trace with hash 304957167, now seen corresponding path program 1 times [2023-12-15 21:39:27,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:39:27,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861193584] [2023-12-15 21:39:27,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:39:27,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:39:27,325 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:39:27,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1032412916] [2023-12-15 21:39:27,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:39:27,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:39:27,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:39:27,331 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:39:27,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 21:39:27,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:39:27,511 INFO L262 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 21:39:27,520 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:39:27,587 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-15 21:39:27,587 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:39:27,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:39:27,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861193584] [2023-12-15 21:39:27,588 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:39:27,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1032412916] [2023-12-15 21:39:27,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1032412916] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:39:27,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:39:27,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 21:39:27,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774393073] [2023-12-15 21:39:27,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:39:27,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 21:39:27,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:39:27,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 21:39:27,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 21:39:27,613 INFO L87 Difference]: Start difference. First operand has 93 states, 73 states have (on average 1.4383561643835616) internal successors, (105), 74 states have internal predecessors, (105), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:39:27,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:39:27,657 INFO L93 Difference]: Finished difference Result 187 states and 298 transitions. [2023-12-15 21:39:27,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 21:39:27,690 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 127 [2023-12-15 21:39:27,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:39:27,695 INFO L225 Difference]: With dead ends: 187 [2023-12-15 21:39:27,695 INFO L226 Difference]: Without dead ends: 95 [2023-12-15 21:39:27,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:39:27,721 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 3 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:39:27,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 372 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:39:27,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2023-12-15 21:39:27,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 93. [2023-12-15 21:39:27,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 74 states have (on average 1.3513513513513513) internal successors, (100), 74 states have internal predecessors, (100), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-12-15 21:39:27,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 134 transitions. [2023-12-15 21:39:27,749 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 134 transitions. Word has length 127 [2023-12-15 21:39:27,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:39:27,751 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 134 transitions. [2023-12-15 21:39:27,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:39:27,751 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 134 transitions. [2023-12-15 21:39:27,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-12-15 21:39:27,752 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:39:27,753 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:39:27,762 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-15 21:39:27,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-15 21:39:27,963 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:39:27,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:39:27,963 INFO L85 PathProgramCache]: Analyzing trace with hash 305016749, now seen corresponding path program 1 times [2023-12-15 21:39:27,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:39:27,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532449741] [2023-12-15 21:39:27,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:39:27,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:39:28,007 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:39:28,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [196615101] [2023-12-15 21:39:28,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:39:28,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:39:28,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:39:28,009 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:39:28,015 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 21:39:28,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:39:28,142 INFO L262 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-15 21:39:28,152 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:39:28,203 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 51 [2023-12-15 21:39:28,209 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2023-12-15 21:39:28,219 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 26 [2023-12-15 21:39:28,361 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:39:28,361 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 167 treesize of output 83 [2023-12-15 21:39:28,391 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 3 proven. 45 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2023-12-15 21:39:28,392 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:39:28,562 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-15 21:39:28,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:39:28,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532449741] [2023-12-15 21:39:28,563 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:39:28,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [196615101] [2023-12-15 21:39:28,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [196615101] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-15 21:39:28,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 21:39:28,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 10 [2023-12-15 21:39:28,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051785880] [2023-12-15 21:39:28,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:39:28,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 21:39:28,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:39:28,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 21:39:28,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-12-15 21:39:28,565 INFO L87 Difference]: Start difference. First operand 93 states and 134 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:39:28,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:39:28,898 INFO L93 Difference]: Finished difference Result 281 states and 398 transitions. [2023-12-15 21:39:28,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-15 21:39:28,898 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 127 [2023-12-15 21:39:28,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:39:28,900 INFO L225 Difference]: With dead ends: 281 [2023-12-15 21:39:28,900 INFO L226 Difference]: Without dead ends: 189 [2023-12-15 21:39:28,901 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 243 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2023-12-15 21:39:28,901 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 198 mSDsluCounter, 506 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 648 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 21:39:28,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 648 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 21:39:28,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2023-12-15 21:39:28,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 148. [2023-12-15 21:39:28,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 122 states have (on average 1.3360655737704918) internal successors, (163), 123 states have internal predecessors, (163), 23 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2023-12-15 21:39:28,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 209 transitions. [2023-12-15 21:39:28,914 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 209 transitions. Word has length 127 [2023-12-15 21:39:28,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:39:28,914 INFO L495 AbstractCegarLoop]: Abstraction has 148 states and 209 transitions. [2023-12-15 21:39:28,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:39:28,914 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 209 transitions. [2023-12-15 21:39:28,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-12-15 21:39:28,916 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:39:28,916 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:39:28,923 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-15 21:39:29,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-15 21:39:29,124 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:39:29,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:39:29,125 INFO L85 PathProgramCache]: Analyzing trace with hash -716051605, now seen corresponding path program 1 times [2023-12-15 21:39:29,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:39:29,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674380823] [2023-12-15 21:39:29,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:39:29,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:39:29,159 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:39:29,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1751221179] [2023-12-15 21:39:29,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:39:29,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:39:29,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:39:29,168 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:39:29,170 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-15 21:39:29,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:39:29,276 INFO L262 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 21:39:29,282 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:39:29,304 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 21 treesize of output 9 [2023-12-15 21:39:29,311 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-15 21:39:29,311 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:39:29,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:39:29,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674380823] [2023-12-15 21:39:29,312 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:39:29,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1751221179] [2023-12-15 21:39:29,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1751221179] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:39:29,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:39:29,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 21:39:29,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684064588] [2023-12-15 21:39:29,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:39:29,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 21:39:29,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:39:29,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 21:39:29,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:39:29,316 INFO L87 Difference]: Start difference. First operand 148 states and 209 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:39:29,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:39:29,576 INFO L93 Difference]: Finished difference Result 422 states and 590 transitions. [2023-12-15 21:39:29,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 21:39:29,576 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 127 [2023-12-15 21:39:29,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:39:29,581 INFO L225 Difference]: With dead ends: 422 [2023-12-15 21:39:29,582 INFO L226 Difference]: Without dead ends: 275 [2023-12-15 21:39:29,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-15 21:39:29,591 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 116 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 575 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 21:39:29,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 575 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 21:39:29,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2023-12-15 21:39:29,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 212. [2023-12-15 21:39:29,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 173 states have (on average 1.3179190751445087) internal successors, (228), 175 states have internal predecessors, (228), 35 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (35), 33 states have call predecessors, (35), 35 states have call successors, (35) [2023-12-15 21:39:29,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 298 transitions. [2023-12-15 21:39:29,615 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 298 transitions. Word has length 127 [2023-12-15 21:39:29,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:39:29,618 INFO L495 AbstractCegarLoop]: Abstraction has 212 states and 298 transitions. [2023-12-15 21:39:29,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:39:29,618 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 298 transitions. [2023-12-15 21:39:29,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-12-15 21:39:29,620 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:39:29,620 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:39:29,632 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-15 21:39:29,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:39:29,830 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:39:29,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:39:29,831 INFO L85 PathProgramCache]: Analyzing trace with hash 210949506, now seen corresponding path program 1 times [2023-12-15 21:39:29,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:39:29,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637589869] [2023-12-15 21:39:29,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:39:29,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:39:29,859 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:39:29,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1331896928] [2023-12-15 21:39:29,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:39:29,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:39:29,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:39:29,864 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:39:29,869 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-15 21:39:29,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:39:29,990 INFO L262 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-15 21:39:29,995 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:39:30,052 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 100 treesize of output 74 [2023-12-15 21:39:30,058 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:39:30,059 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 74 treesize of output 114 [2023-12-15 21:39:30,101 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:39:30,102 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 74 treesize of output 62 [2023-12-15 21:39:30,256 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:39:30,257 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 144 treesize of output 58 [2023-12-15 21:39:30,283 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-15 21:39:30,284 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:39:30,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:39:30,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637589869] [2023-12-15 21:39:30,284 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:39:30,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1331896928] [2023-12-15 21:39:30,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1331896928] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:39:30,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:39:30,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-15 21:39:30,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978881432] [2023-12-15 21:39:30,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:39:30,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-15 21:39:30,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:39:30,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-15 21:39:30,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-12-15 21:39:30,286 INFO L87 Difference]: Start difference. First operand 212 states and 298 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:39:30,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:39:30,721 INFO L93 Difference]: Finished difference Result 497 states and 694 transitions. [2023-12-15 21:39:30,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 21:39:30,722 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 128 [2023-12-15 21:39:30,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:39:30,723 INFO L225 Difference]: With dead ends: 497 [2023-12-15 21:39:30,723 INFO L226 Difference]: Without dead ends: 286 [2023-12-15 21:39:30,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-12-15 21:39:30,724 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 146 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 428 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 566 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 21:39:30,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 566 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 428 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 21:39:30,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2023-12-15 21:39:30,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 218. [2023-12-15 21:39:30,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 179 states have (on average 1.324022346368715) internal successors, (237), 181 states have internal predecessors, (237), 35 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (35), 33 states have call predecessors, (35), 35 states have call successors, (35) [2023-12-15 21:39:30,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 307 transitions. [2023-12-15 21:39:30,743 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 307 transitions. Word has length 128 [2023-12-15 21:39:30,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:39:30,743 INFO L495 AbstractCegarLoop]: Abstraction has 218 states and 307 transitions. [2023-12-15 21:39:30,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:39:30,744 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 307 transitions. [2023-12-15 21:39:30,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-12-15 21:39:30,747 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:39:30,747 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:39:30,755 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-15 21:39:30,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:39:30,953 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:39:30,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:39:30,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1377398396, now seen corresponding path program 1 times [2023-12-15 21:39:30,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:39:30,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538215746] [2023-12-15 21:39:30,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:39:30,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:39:30,984 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:39:30,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1546020139] [2023-12-15 21:39:30,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:39:30,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:39:30,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:39:30,995 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:39:31,012 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-15 21:39:31,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:39:31,120 INFO L262 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-15 21:39:31,122 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:39:31,183 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:39:31,183 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 59 treesize of output 23 [2023-12-15 21:39:31,203 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-15 21:39:31,203 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:39:31,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:39:31,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538215746] [2023-12-15 21:39:31,203 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:39:31,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1546020139] [2023-12-15 21:39:31,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1546020139] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:39:31,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:39:31,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-15 21:39:31,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305422387] [2023-12-15 21:39:31,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:39:31,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 21:39:31,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:39:31,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 21:39:31,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-15 21:39:31,206 INFO L87 Difference]: Start difference. First operand 218 states and 307 transitions. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:39:31,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:39:31,562 INFO L93 Difference]: Finished difference Result 494 states and 690 transitions. [2023-12-15 21:39:31,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-15 21:39:31,563 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 128 [2023-12-15 21:39:31,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:39:31,564 INFO L225 Difference]: With dead ends: 494 [2023-12-15 21:39:31,564 INFO L226 Difference]: Without dead ends: 277 [2023-12-15 21:39:31,564 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-12-15 21:39:31,565 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 98 mSDsluCounter, 473 mSDsCounter, 0 mSdLazyCounter, 391 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 594 SdHoareTripleChecker+Invalid, 394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 21:39:31,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 594 Invalid, 394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 391 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 21:39:31,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2023-12-15 21:39:31,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 222. [2023-12-15 21:39:31,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 183 states have (on average 1.3224043715846994) internal successors, (242), 185 states have internal predecessors, (242), 35 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (35), 33 states have call predecessors, (35), 35 states have call successors, (35) [2023-12-15 21:39:31,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 312 transitions. [2023-12-15 21:39:31,575 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 312 transitions. Word has length 128 [2023-12-15 21:39:31,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:39:31,576 INFO L495 AbstractCegarLoop]: Abstraction has 222 states and 312 transitions. [2023-12-15 21:39:31,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:39:31,576 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 312 transitions. [2023-12-15 21:39:31,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-12-15 21:39:31,577 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:39:31,577 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:39:31,585 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-15 21:39:31,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:39:31,785 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:39:31,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:39:31,786 INFO L85 PathProgramCache]: Analyzing trace with hash -1477994236, now seen corresponding path program 1 times [2023-12-15 21:39:31,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:39:31,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479080937] [2023-12-15 21:39:31,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:39:31,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:39:31,815 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:39:31,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [269353612] [2023-12-15 21:39:31,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:39:31,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:39:31,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:39:31,824 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:39:31,826 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-15 21:39:31,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:39:31,974 INFO L262 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-15 21:39:31,978 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:39:32,008 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-12-15 21:39:32,027 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-12-15 21:39:32,056 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-12-15 21:39:32,066 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-12-15 21:39:32,074 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:39:32,075 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 31 [2023-12-15 21:39:32,106 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 70 [2023-12-15 21:39:32,112 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:39:32,112 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 110 [2023-12-15 21:39:32,157 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 61 [2023-12-15 21:39:32,247 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:39:32,247 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 115 treesize of output 41 [2023-12-15 21:39:32,259 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 276 proven. 18 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2023-12-15 21:39:32,259 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:39:32,407 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 30 proven. 18 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2023-12-15 21:39:32,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:39:32,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479080937] [2023-12-15 21:39:32,408 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:39:32,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [269353612] [2023-12-15 21:39:32,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [269353612] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:39:32,408 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 21:39:32,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 12 [2023-12-15 21:39:32,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948527389] [2023-12-15 21:39:32,408 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 21:39:32,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-15 21:39:32,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:39:32,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-15 21:39:32,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-12-15 21:39:32,409 INFO L87 Difference]: Start difference. First operand 222 states and 312 transitions. Second operand has 12 states, 10 states have (on average 6.5) internal successors, (65), 12 states have internal predecessors, (65), 4 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (24), 2 states have call predecessors, (24), 4 states have call successors, (24) [2023-12-15 21:39:33,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:39:33,177 INFO L93 Difference]: Finished difference Result 772 states and 1065 transitions. [2023-12-15 21:39:33,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-15 21:39:33,178 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 6.5) internal successors, (65), 12 states have internal predecessors, (65), 4 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (24), 2 states have call predecessors, (24), 4 states have call successors, (24) Word has length 128 [2023-12-15 21:39:33,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:39:33,180 INFO L225 Difference]: With dead ends: 772 [2023-12-15 21:39:33,180 INFO L226 Difference]: Without dead ends: 551 [2023-12-15 21:39:33,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 237 SyntacticMatches, 7 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=177, Invalid=473, Unknown=0, NotChecked=0, Total=650 [2023-12-15 21:39:33,181 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 460 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 840 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 485 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 840 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 21:39:33,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [485 Valid, 330 Invalid, 864 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 840 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 21:39:33,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2023-12-15 21:39:33,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 414. [2023-12-15 21:39:33,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 348 states have (on average 1.3074712643678161) internal successors, (455), 353 states have internal predecessors, (455), 57 states have call successors, (57), 8 states have call predecessors, (57), 8 states have return successors, (57), 52 states have call predecessors, (57), 57 states have call successors, (57) [2023-12-15 21:39:33,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 569 transitions. [2023-12-15 21:39:33,201 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 569 transitions. Word has length 128 [2023-12-15 21:39:33,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:39:33,202 INFO L495 AbstractCegarLoop]: Abstraction has 414 states and 569 transitions. [2023-12-15 21:39:33,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 6.5) internal successors, (65), 12 states have internal predecessors, (65), 4 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (24), 2 states have call predecessors, (24), 4 states have call successors, (24) [2023-12-15 21:39:33,202 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 569 transitions. [2023-12-15 21:39:33,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-12-15 21:39:33,203 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:39:33,203 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:39:33,212 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-15 21:39:33,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:39:33,410 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:39:33,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:39:33,410 INFO L85 PathProgramCache]: Analyzing trace with hash -1219828798, now seen corresponding path program 1 times [2023-12-15 21:39:33,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:39:33,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515598035] [2023-12-15 21:39:33,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:39:33,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:39:33,434 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:39:33,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [739189029] [2023-12-15 21:39:33,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:39:33,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:39:33,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:39:33,438 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:39:33,463 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-15 21:39:33,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:39:33,829 INFO L262 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-15 21:39:33,831 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:39:33,870 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 112 treesize of output 84 [2023-12-15 21:39:33,877 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:39:33,877 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 84 treesize of output 120 [2023-12-15 21:39:33,897 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 46 [2023-12-15 21:39:33,970 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:39:33,970 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 174 treesize of output 70 [2023-12-15 21:39:33,991 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-15 21:39:33,991 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:39:33,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:39:33,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515598035] [2023-12-15 21:39:33,991 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:39:33,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [739189029] [2023-12-15 21:39:33,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [739189029] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:39:33,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:39:33,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 21:39:33,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715208273] [2023-12-15 21:39:33,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:39:33,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 21:39:33,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:39:33,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 21:39:33,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-15 21:39:33,993 INFO L87 Difference]: Start difference. First operand 414 states and 569 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:39:34,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:39:34,396 INFO L93 Difference]: Finished difference Result 1187 states and 1617 transitions. [2023-12-15 21:39:34,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 21:39:34,396 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 128 [2023-12-15 21:39:34,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:39:34,399 INFO L225 Difference]: With dead ends: 1187 [2023-12-15 21:39:34,399 INFO L226 Difference]: Without dead ends: 774 [2023-12-15 21:39:34,400 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-12-15 21:39:34,401 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 184 mSDsluCounter, 374 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 514 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 21:39:34,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 514 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 341 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 21:39:34,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 774 states. [2023-12-15 21:39:34,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 774 to 428. [2023-12-15 21:39:34,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 362 states have (on average 1.3011049723756907) internal successors, (471), 367 states have internal predecessors, (471), 57 states have call successors, (57), 8 states have call predecessors, (57), 8 states have return successors, (57), 52 states have call predecessors, (57), 57 states have call successors, (57) [2023-12-15 21:39:34,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 585 transitions. [2023-12-15 21:39:34,434 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 585 transitions. Word has length 128 [2023-12-15 21:39:34,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:39:34,434 INFO L495 AbstractCegarLoop]: Abstraction has 428 states and 585 transitions. [2023-12-15 21:39:34,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-15 21:39:34,434 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 585 transitions. [2023-12-15 21:39:34,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-12-15 21:39:34,435 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:39:34,435 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:39:34,444 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-15 21:39:34,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:39:34,642 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:39:34,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:39:34,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1795274820, now seen corresponding path program 1 times [2023-12-15 21:39:34,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:39:34,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336460901] [2023-12-15 21:39:34,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:39:34,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:39:34,675 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:39:34,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [956538325] [2023-12-15 21:39:34,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:39:34,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:39:34,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:39:34,681 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:39:34,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-15 21:39:41,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:39:41,332 INFO L262 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 124 conjunts are in the unsatisfiable core [2023-12-15 21:39:41,338 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:39:41,347 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:39:41,348 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 38 treesize of output 18 [2023-12-15 21:39:41,414 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-12-15 21:39:41,519 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:39:41,520 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 25 [2023-12-15 21:39:41,658 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:39:41,659 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 37 [2023-12-15 21:39:41,753 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:39:41,754 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 37 [2023-12-15 21:39:41,962 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 47 [2023-12-15 21:39:42,435 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:39:42,436 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 64 treesize of output 60 [2023-12-15 21:39:42,671 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:39:42,671 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 64 treesize of output 60 [2023-12-15 21:39:43,008 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:39:43,008 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 91 treesize of output 82 [2023-12-15 21:39:43,096 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 92 [2023-12-15 21:39:43,252 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:39:43,253 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 36 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 139 treesize of output 119 [2023-12-15 21:39:43,786 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 214 treesize of output 152 [2023-12-15 21:39:43,792 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 10 select indices, 10 select index equivalence classes, 55 disjoint index pairs (out of 45 index pairs), introduced 12 new quantified variables, introduced 0 case distinctions, treesize of input 152 treesize of output 214 [2023-12-15 21:39:43,829 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 11 select indices, 11 select index equivalence classes, 55 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 170 treesize of output 121 [2023-12-15 21:39:57,377 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:39:57,380 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 55 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 373 treesize of output 169 [2023-12-15 21:40:02,417 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 401 proven. 99 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-12-15 21:40:02,417 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:40:11,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:40:11,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336460901] [2023-12-15 21:40:11,371 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:40:11,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [956538325] [2023-12-15 21:40:11,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [956538325] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 21:40:11,371 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-15 21:40:11,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2023-12-15 21:40:11,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113077990] [2023-12-15 21:40:11,371 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-15 21:40:11,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-12-15 21:40:11,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:40:11,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-12-15 21:40:11,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=469, Invalid=2501, Unknown=0, NotChecked=0, Total=2970 [2023-12-15 21:40:11,373 INFO L87 Difference]: Start difference. First operand 428 states and 585 transitions. Second operand has 43 states, 36 states have (on average 2.111111111111111) internal successors, (76), 39 states have internal predecessors, (76), 11 states have call successors, (17), 7 states have call predecessors, (17), 11 states have return successors, (17), 7 states have call predecessors, (17), 11 states have call successors, (17) [2023-12-15 21:40:19,479 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-15 21:40:21,463 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] Received shutdown request... [2023-12-15 21:40:39,790 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 21:40:39,819 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 21:40:39,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2023-12-15 21:40:39,897 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 99 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1452 ImplicationChecksByTransitivity, 32.8s TimeCoverageRelationStatistics Valid=761, Invalid=4495, Unknown=0, NotChecked=0, Total=5256 [2023-12-15 21:40:39,898 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 205 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 1532 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 1573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2023-12-15 21:40:39,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 318 Invalid, 1573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1532 Invalid, 0 Unknown, 0 Unchecked, 8.1s Time] [2023-12-15 21:40:39,899 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 21:40:39,907 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-15 21:40:40,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-15 21:40:40,100 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (428states) and FLOYD_HOARE automaton (currently 53 states, 43 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-10-2-14-1 term,while SimplifyDDA2 was simplifying 6 xjuncts wrt. a ∧-2-1 context. [2023-12-15 21:40:40,104 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:40:40,105 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 21:40:40,107 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 09:40:40 BoogieIcfgContainer [2023-12-15 21:40:40,107 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 21:40:40,107 INFO L158 Benchmark]: Toolchain (without parser) took 74027.57ms. Allocated memory was 183.5MB in the beginning and 334.5MB in the end (delta: 151.0MB). Free memory was 117.5MB in the beginning and 285.4MB in the end (delta: -167.9MB). Peak memory consumption was 167.1MB. Max. memory is 8.0GB. [2023-12-15 21:40:40,107 INFO L158 Benchmark]: CDTParser took 0.57ms. Allocated memory is still 183.5MB. Free memory is still 133.5MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 21:40:40,107 INFO L158 Benchmark]: CACSL2BoogieTranslator took 272.26ms. Allocated memory was 183.5MB in the beginning and 265.3MB in the end (delta: 81.8MB). Free memory was 117.3MB in the beginning and 227.2MB in the end (delta: -109.9MB). Peak memory consumption was 14.5MB. Max. memory is 8.0GB. [2023-12-15 21:40:40,108 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.99ms. Allocated memory is still 265.3MB. Free memory was 227.2MB in the beginning and 223.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-15 21:40:40,108 INFO L158 Benchmark]: Boogie Preprocessor took 69.78ms. Allocated memory is still 265.3MB. Free memory was 223.0MB in the beginning and 218.3MB in the end (delta: 4.7MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2023-12-15 21:40:40,108 INFO L158 Benchmark]: RCFGBuilder took 589.30ms. Allocated memory is still 265.3MB. Free memory was 218.3MB in the beginning and 187.9MB in the end (delta: 30.4MB). Peak memory consumption was 30.4MB. Max. memory is 8.0GB. [2023-12-15 21:40:40,108 INFO L158 Benchmark]: TraceAbstraction took 73033.70ms. Allocated memory was 265.3MB in the beginning and 334.5MB in the end (delta: 69.2MB). Free memory was 187.4MB in the beginning and 285.4MB in the end (delta: -98.0MB). Peak memory consumption was 153.7MB. Max. memory is 8.0GB. [2023-12-15 21:40:40,109 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.57ms. Allocated memory is still 183.5MB. Free memory is still 133.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 272.26ms. Allocated memory was 183.5MB in the beginning and 265.3MB in the end (delta: 81.8MB). Free memory was 117.3MB in the beginning and 227.2MB in the end (delta: -109.9MB). Peak memory consumption was 14.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 55.99ms. Allocated memory is still 265.3MB. Free memory was 227.2MB in the beginning and 223.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 69.78ms. Allocated memory is still 265.3MB. Free memory was 223.0MB in the beginning and 218.3MB in the end (delta: 4.7MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * RCFGBuilder took 589.30ms. Allocated memory is still 265.3MB. Free memory was 218.3MB in the beginning and 187.9MB in the end (delta: 30.4MB). Peak memory consumption was 30.4MB. Max. memory is 8.0GB. * TraceAbstraction took 73033.70ms. Allocated memory was 265.3MB in the beginning and 334.5MB in the end (delta: 69.2MB). Free memory was 187.4MB in the beginning and 285.4MB in the end (delta: -98.0MB). Peak memory consumption was 153.7MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was constructing difference of abstraction (428states) and FLOYD_HOARE automaton (currently 53 states, 43 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-10-2-14-1 term,while SimplifyDDA2 was simplifying 6 xjuncts wrt. a ∧-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 93 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 73.0s, OverallIterations: 8, TraceHistogramMax: 17, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 31.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1442 SdHoareTripleChecker+Valid, 10.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1410 mSDsluCounter, 3917 SdHoareTripleChecker+Invalid, 9.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2967 mSDsCounter, 88 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4114 IncrementalHoareTripleChecker+Invalid, 4202 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 88 mSolverCounterUnsat, 950 mSDtfsCounter, 4114 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1342 GetRequests, 1190 SyntacticMatches, 9 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1599 ImplicationChecksByTransitivity, 33.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=428occurred in iteration=7, InterpolantAutomatonStates: 69, 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, 7 MinimizatonAttempts, 712 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 7.4s SatisfiabilityAnalysisTime, 31.6s InterpolantComputationTime, 1021 NumberOfCodeBlocks, 1021 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 1266 ConstructedInterpolants, 10 QuantifiedInterpolants, 10308 SizeOfPredicates, 80 NumberOfNonLiveVariables, 3058 ConjunctsInSsa, 222 ConjunctsInUnsatCore, 10 InterpolantComputations, 6 PerfectInterpolantSequences, 5260/5440 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