/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/array-examples/standard_copy2_ground-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 05:51:44,441 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 05:51:44,513 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 05:51:44,516 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 05:51:44,516 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 05:51:44,538 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 05:51:44,540 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 05:51:44,540 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 05:51:44,540 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 05:51:44,543 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 05:51:44,543 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 05:51:44,544 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 05:51:44,544 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 05:51:44,545 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 05:51:44,545 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 05:51:44,546 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 05:51:44,546 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 05:51:44,546 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 05:51:44,546 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 05:51:44,546 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 05:51:44,546 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 05:51:44,547 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 05:51:44,547 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 05:51:44,547 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 05:51:44,547 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 05:51:44,547 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 05:51:44,547 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 05:51:44,547 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 05:51:44,548 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 05:51:44,548 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 05:51:44,549 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 05:51:44,549 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 05:51:44,549 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 05:51:44,549 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 05:51:44,549 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 05:51:44,549 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 05:51:44,549 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 05:51:44,549 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 05:51:44,550 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 05:51:44,550 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 05:51:44,550 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 05:51:44,550 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 05:51:44,550 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 05:51:44,550 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-20 05:51:44,734 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 05:51:44,750 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 05:51:44,751 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 05:51:44,752 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 05:51:44,759 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 05:51:44,760 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_copy2_ground-2.i [2023-12-20 05:51:45,812 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 05:51:45,988 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 05:51:45,989 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_copy2_ground-2.i [2023-12-20 05:51:45,995 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09b817ad3/be221e82825446ffaafaff84b570764f/FLAGd1985b418 [2023-12-20 05:51:46,394 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09b817ad3/be221e82825446ffaafaff84b570764f [2023-12-20 05:51:46,396 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 05:51:46,396 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 05:51:46,397 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 05:51:46,397 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 05:51:46,401 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 05:51:46,401 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 05:51:46" (1/1) ... [2023-12-20 05:51:46,402 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@905234 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:51:46, skipping insertion in model container [2023-12-20 05:51:46,402 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 05:51:46" (1/1) ... [2023-12-20 05:51:46,416 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 05:51:46,506 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_copy2_ground-2.i[816,829] [2023-12-20 05:51:46,516 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 05:51:46,522 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 05:51:46,529 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_copy2_ground-2.i[816,829] [2023-12-20 05:51:46,534 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 05:51:46,544 INFO L206 MainTranslator]: Completed translation [2023-12-20 05:51:46,544 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:51:46 WrapperNode [2023-12-20 05:51:46,544 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 05:51:46,545 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 05:51:46,545 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 05:51:46,545 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 05:51:46,550 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:51:46" (1/1) ... [2023-12-20 05:51:46,554 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:51:46" (1/1) ... [2023-12-20 05:51:46,567 INFO L138 Inliner]: procedures = 16, calls = 23, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 80 [2023-12-20 05:51:46,567 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 05:51:46,568 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 05:51:46,568 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 05:51:46,568 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 05:51:46,581 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:51:46" (1/1) ... [2023-12-20 05:51:46,587 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:51:46" (1/1) ... [2023-12-20 05:51:46,588 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:51:46" (1/1) ... [2023-12-20 05:51:46,613 INFO L175 MemorySlicer]: Split 9 memory accesses to 4 slices as follows [2, 3, 2, 2]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 3 writes are split as follows [0, 1, 1, 1]. [2023-12-20 05:51:46,614 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:51:46" (1/1) ... [2023-12-20 05:51:46,614 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:51:46" (1/1) ... [2023-12-20 05:51:46,617 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:51:46" (1/1) ... [2023-12-20 05:51:46,620 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:51:46" (1/1) ... [2023-12-20 05:51:46,620 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:51:46" (1/1) ... [2023-12-20 05:51:46,621 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:51:46" (1/1) ... [2023-12-20 05:51:46,622 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 05:51:46,623 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 05:51:46,623 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 05:51:46,623 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 05:51:46,624 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:51:46" (1/1) ... [2023-12-20 05:51:46,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 05:51:46,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 05:51:46,646 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-20 05:51:46,666 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-20 05:51:46,671 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 05:51:46,671 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 05:51:46,671 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-20 05:51:46,671 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-12-20 05:51:46,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-12-20 05:51:46,672 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-20 05:51:46,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-12-20 05:51:46,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-12-20 05:51:46,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-12-20 05:51:46,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-12-20 05:51:46,672 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 05:51:46,672 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 05:51:46,672 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-12-20 05:51:46,672 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-12-20 05:51:46,672 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-12-20 05:51:46,673 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-12-20 05:51:46,673 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-20 05:51:46,724 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 05:51:46,725 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 05:51:46,825 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 05:51:46,853 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 05:51:46,854 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-12-20 05:51:46,854 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 05:51:46 BoogieIcfgContainer [2023-12-20 05:51:46,854 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 05:51:46,856 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 05:51:46,856 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 05:51:46,858 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 05:51:46,858 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 05:51:46" (1/3) ... [2023-12-20 05:51:46,858 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39f61a5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 05:51:46, skipping insertion in model container [2023-12-20 05:51:46,859 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:51:46" (2/3) ... [2023-12-20 05:51:46,859 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39f61a5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 05:51:46, skipping insertion in model container [2023-12-20 05:51:46,859 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 05:51:46" (3/3) ... [2023-12-20 05:51:46,860 INFO L112 eAbstractionObserver]: Analyzing ICFG standard_copy2_ground-2.i [2023-12-20 05:51:46,872 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 05:51:46,872 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-20 05:51:46,902 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 05:51:46,906 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;@7becb5b3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 05:51:46,906 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-20 05:51:46,909 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 13 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 05:51:46,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-20 05:51:46,913 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 05:51:46,914 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 05:51:46,914 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 05:51:46,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 05:51:46,918 INFO L85 PathProgramCache]: Analyzing trace with hash 128561044, now seen corresponding path program 1 times [2023-12-20 05:51:46,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 05:51:46,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009325639] [2023-12-20 05:51:46,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 05:51:46,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 05:51:46,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 05:51:47,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 05:51:47,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 05:51:47,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009325639] [2023-12-20 05:51:47,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009325639] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 05:51:47,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 05:51:47,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 05:51:47,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411801373] [2023-12-20 05:51:47,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 05:51:47,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 05:51:47,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 05:51:47,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 05:51:47,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 05:51:47,093 INFO L87 Difference]: Start difference. First operand has 14 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 13 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 05:51:47,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 05:51:47,125 INFO L93 Difference]: Finished difference Result 27 states and 43 transitions. [2023-12-20 05:51:47,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 05:51:47,127 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-12-20 05:51:47,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 05:51:47,132 INFO L225 Difference]: With dead ends: 27 [2023-12-20 05:51:47,132 INFO L226 Difference]: Without dead ends: 13 [2023-12-20 05:51:47,134 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 05:51:47,136 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 05:51:47,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 21 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 05:51:47,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2023-12-20 05:51:47,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2023-12-20 05:51:47,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 05:51:47,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 16 transitions. [2023-12-20 05:51:47,157 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 16 transitions. Word has length 10 [2023-12-20 05:51:47,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 05:51:47,157 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 16 transitions. [2023-12-20 05:51:47,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 05:51:47,157 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 16 transitions. [2023-12-20 05:51:47,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-12-20 05:51:47,158 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 05:51:47,158 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 05:51:47,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 05:51:47,158 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 05:51:47,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 05:51:47,159 INFO L85 PathProgramCache]: Analyzing trace with hash -162311142, now seen corresponding path program 1 times [2023-12-20 05:51:47,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 05:51:47,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550458704] [2023-12-20 05:51:47,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 05:51:47,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 05:51:47,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 05:51:47,225 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 05:51:47,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 05:51:47,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550458704] [2023-12-20 05:51:47,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550458704] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 05:51:47,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [58777648] [2023-12-20 05:51:47,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 05:51:47,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 05:51:47,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 05:51:47,228 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 05:51:47,230 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-20 05:51:47,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 05:51:47,297 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 05:51:47,300 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 05:51:47,311 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-20 05:51:47,312 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 05:51:47,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [58777648] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 05:51:47,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 05:51:47,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-12-20 05:51:47,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359389551] [2023-12-20 05:51:47,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 05:51:47,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 05:51:47,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 05:51:47,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 05:51:47,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-20 05:51:47,314 INFO L87 Difference]: Start difference. First operand 13 states and 16 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 05:51:47,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 05:51:47,328 INFO L93 Difference]: Finished difference Result 23 states and 29 transitions. [2023-12-20 05:51:47,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 05:51:47,329 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-12-20 05:51:47,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 05:51:47,329 INFO L225 Difference]: With dead ends: 23 [2023-12-20 05:51:47,329 INFO L226 Difference]: Without dead ends: 15 [2023-12-20 05:51:47,329 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-20 05:51:47,330 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 05:51:47,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 16 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 05:51:47,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2023-12-20 05:51:47,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2023-12-20 05:51:47,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 05:51:47,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions. [2023-12-20 05:51:47,367 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 18 transitions. Word has length 11 [2023-12-20 05:51:47,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 05:51:47,367 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 18 transitions. [2023-12-20 05:51:47,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 05:51:47,367 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 18 transitions. [2023-12-20 05:51:47,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-12-20 05:51:47,368 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 05:51:47,368 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 05:51:47,396 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-20 05:51:47,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 05:51:47,579 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 05:51:47,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 05:51:47,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1034537550, now seen corresponding path program 1 times [2023-12-20 05:51:47,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 05:51:47,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368546233] [2023-12-20 05:51:47,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 05:51:47,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 05:51:47,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 05:51:47,648 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 05:51:47,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 05:51:47,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368546233] [2023-12-20 05:51:47,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368546233] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 05:51:47,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1440484143] [2023-12-20 05:51:47,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 05:51:47,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 05:51:47,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 05:51:47,651 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 05:51:47,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-20 05:51:47,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 05:51:47,739 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-20 05:51:47,740 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 05:51:47,769 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 05:51:47,769 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 05:51:47,783 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 05:51:47,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1440484143] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 05:51:47,784 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 05:51:47,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-12-20 05:51:47,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333510279] [2023-12-20 05:51:47,784 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 05:51:47,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 05:51:47,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 05:51:47,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 05:51:47,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-12-20 05:51:47,785 INFO L87 Difference]: Start difference. First operand 15 states and 18 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 05:51:47,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 05:51:47,813 INFO L93 Difference]: Finished difference Result 30 states and 38 transitions. [2023-12-20 05:51:47,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 05:51:47,813 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-12-20 05:51:47,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 05:51:47,813 INFO L225 Difference]: With dead ends: 30 [2023-12-20 05:51:47,814 INFO L226 Difference]: Without dead ends: 18 [2023-12-20 05:51:47,814 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-12-20 05:51:47,815 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 05:51:47,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 05:51:47,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2023-12-20 05:51:47,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2023-12-20 05:51:47,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 17 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 05:51:47,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2023-12-20 05:51:47,818 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 13 [2023-12-20 05:51:47,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 05:51:47,818 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2023-12-20 05:51:47,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 05:51:47,818 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2023-12-20 05:51:47,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-20 05:51:47,818 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 05:51:47,819 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 05:51:47,826 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-20 05:51:48,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-12-20 05:51:48,024 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 05:51:48,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 05:51:48,024 INFO L85 PathProgramCache]: Analyzing trace with hash -1071071032, now seen corresponding path program 2 times [2023-12-20 05:51:48,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 05:51:48,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255268659] [2023-12-20 05:51:48,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 05:51:48,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 05:51:48,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 05:51:48,112 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-20 05:51:48,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 05:51:48,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255268659] [2023-12-20 05:51:48,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255268659] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 05:51:48,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [187186201] [2023-12-20 05:51:48,115 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-20 05:51:48,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 05:51:48,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 05:51:48,116 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 05:51:48,119 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-20 05:51:48,184 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-20 05:51:48,184 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 05:51:48,187 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-20 05:51:48,189 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 05:51:48,236 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 05:51:48,237 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 05:51:48,298 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 05:51:48,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [187186201] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 05:51:48,298 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 05:51:48,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 6] total 14 [2023-12-20 05:51:48,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902333758] [2023-12-20 05:51:48,299 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 05:51:48,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-20 05:51:48,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 05:51:48,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-20 05:51:48,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2023-12-20 05:51:48,300 INFO L87 Difference]: Start difference. First operand 18 states and 21 transitions. Second operand has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 05:51:48,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 05:51:48,348 INFO L93 Difference]: Finished difference Result 38 states and 51 transitions. [2023-12-20 05:51:48,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 05:51:48,349 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-12-20 05:51:48,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 05:51:48,350 INFO L225 Difference]: With dead ends: 38 [2023-12-20 05:51:48,350 INFO L226 Difference]: Without dead ends: 26 [2023-12-20 05:51:48,351 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2023-12-20 05:51:48,354 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 05:51:48,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 61 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 05:51:48,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-12-20 05:51:48,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2023-12-20 05:51:48,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.16) internal successors, (29), 25 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 05:51:48,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2023-12-20 05:51:48,367 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 16 [2023-12-20 05:51:48,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 05:51:48,367 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2023-12-20 05:51:48,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 05:51:48,367 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2023-12-20 05:51:48,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-12-20 05:51:48,368 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 05:51:48,368 INFO L195 NwaCegarLoop]: trace histogram [10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 05:51:48,395 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-20 05:51:48,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 05:51:48,573 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 05:51:48,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 05:51:48,574 INFO L85 PathProgramCache]: Analyzing trace with hash 436827028, now seen corresponding path program 3 times [2023-12-20 05:51:48,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 05:51:48,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13673675] [2023-12-20 05:51:48,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 05:51:48,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 05:51:48,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 05:51:48,845 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-20 05:51:48,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 05:51:48,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13673675] [2023-12-20 05:51:48,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13673675] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 05:51:48,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [968706476] [2023-12-20 05:51:48,846 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-20 05:51:48,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 05:51:48,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 05:51:48,861 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 05:51:48,861 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-20 05:51:48,932 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-20 05:51:48,933 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 05:51:48,933 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-20 05:51:48,934 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 05:51:48,961 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2023-12-20 05:51:48,961 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 05:51:48,995 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2023-12-20 05:51:48,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [968706476] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 05:51:48,995 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 05:51:48,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 5] total 19 [2023-12-20 05:51:48,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881281485] [2023-12-20 05:51:48,996 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 05:51:48,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-20 05:51:48,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 05:51:48,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-20 05:51:48,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2023-12-20 05:51:48,997 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 05:51:49,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 05:51:49,042 INFO L93 Difference]: Finished difference Result 49 states and 63 transitions. [2023-12-20 05:51:49,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-20 05:51:49,043 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2023-12-20 05:51:49,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 05:51:49,043 INFO L225 Difference]: With dead ends: 49 [2023-12-20 05:51:49,043 INFO L226 Difference]: Without dead ends: 35 [2023-12-20 05:51:49,044 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2023-12-20 05:51:49,044 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 05:51:49,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 43 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 05:51:49,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-12-20 05:51:49,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2023-12-20 05:51:49,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.1176470588235294) internal successors, (38), 34 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 05:51:49,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2023-12-20 05:51:49,048 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 24 [2023-12-20 05:51:49,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 05:51:49,048 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2023-12-20 05:51:49,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 05:51:49,048 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2023-12-20 05:51:49,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-12-20 05:51:49,049 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 05:51:49,049 INFO L195 NwaCegarLoop]: trace histogram [11, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 05:51:49,066 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-20 05:51:49,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 05:51:49,254 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 05:51:49,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 05:51:49,254 INFO L85 PathProgramCache]: Analyzing trace with hash -1098944486, now seen corresponding path program 4 times [2023-12-20 05:51:49,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 05:51:49,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320166533] [2023-12-20 05:51:49,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 05:51:49,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 05:51:49,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 05:51:49,518 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-12-20 05:51:49,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 05:51:49,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320166533] [2023-12-20 05:51:49,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320166533] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 05:51:49,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [444829978] [2023-12-20 05:51:49,519 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-20 05:51:49,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 05:51:49,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 05:51:49,520 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 05:51:49,540 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-20 05:51:49,612 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-20 05:51:49,612 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 05:51:49,614 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-20 05:51:49,615 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 05:51:49,650 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-12-20 05:51:49,650 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 05:51:49,848 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-12-20 05:51:49,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [444829978] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 05:51:49,849 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 05:51:49,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 26 [2023-12-20 05:51:49,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142593471] [2023-12-20 05:51:49,849 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 05:51:49,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-12-20 05:51:49,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 05:51:49,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-12-20 05:51:49,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2023-12-20 05:51:49,850 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. Second operand has 27 states, 27 states have (on average 1.4074074074074074) internal successors, (38), 26 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 05:51:49,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 05:51:49,884 INFO L93 Difference]: Finished difference Result 70 states and 88 transitions. [2023-12-20 05:51:49,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-20 05:51:49,885 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.4074074074074074) internal successors, (38), 26 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2023-12-20 05:51:49,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 05:51:49,885 INFO L225 Difference]: With dead ends: 70 [2023-12-20 05:51:49,885 INFO L226 Difference]: Without dead ends: 48 [2023-12-20 05:51:49,886 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2023-12-20 05:51:49,886 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 05:51:49,886 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 05:51:49,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2023-12-20 05:51:49,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2023-12-20 05:51:49,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.0851063829787233) internal successors, (51), 47 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 05:51:49,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 51 transitions. [2023-12-20 05:51:49,890 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 51 transitions. Word has length 33 [2023-12-20 05:51:49,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 05:51:49,891 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 51 transitions. [2023-12-20 05:51:49,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.4074074074074074) internal successors, (38), 26 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 05:51:49,891 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 51 transitions. [2023-12-20 05:51:49,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-12-20 05:51:49,891 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 05:51:49,891 INFO L195 NwaCegarLoop]: trace histogram [24, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 05:51:49,897 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-20 05:51:50,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 05:51:50,097 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 05:51:50,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 05:51:50,097 INFO L85 PathProgramCache]: Analyzing trace with hash 162670932, now seen corresponding path program 5 times [2023-12-20 05:51:50,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 05:51:50,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056799765] [2023-12-20 05:51:50,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 05:51:50,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 05:51:50,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 05:51:50,614 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-12-20 05:51:50,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 05:51:50,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056799765] [2023-12-20 05:51:50,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056799765] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 05:51:50,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1427897789] [2023-12-20 05:51:50,615 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-20 05:51:50,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 05:51:50,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 05:51:50,628 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 05:51:50,654 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-20 05:52:38,347 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2023-12-20 05:52:38,347 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 05:52:38,374 INFO L262 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-20 05:52:38,376 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 05:52:38,425 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-12-20 05:52:38,425 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 05:52:39,107 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-12-20 05:52:39,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1427897789] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 05:52:39,107 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 05:52:39,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 52 [2023-12-20 05:52:39,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733162361] [2023-12-20 05:52:39,107 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 05:52:39,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-12-20 05:52:39,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 05:52:39,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-12-20 05:52:39,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2023-12-20 05:52:39,112 INFO L87 Difference]: Start difference. First operand 48 states and 51 transitions. Second operand has 53 states, 53 states have (on average 1.2075471698113207) internal successors, (64), 52 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 05:52:39,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 05:52:39,188 INFO L93 Difference]: Finished difference Result 96 states and 127 transitions. [2023-12-20 05:52:39,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2023-12-20 05:52:39,189 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 1.2075471698113207) internal successors, (64), 52 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2023-12-20 05:52:39,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 05:52:39,191 INFO L225 Difference]: With dead ends: 96 [2023-12-20 05:52:39,191 INFO L226 Difference]: Without dead ends: 74 [2023-12-20 05:52:39,192 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2023-12-20 05:52:39,193 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 05:52:39,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 64 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 05:52:39,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2023-12-20 05:52:39,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2023-12-20 05:52:39,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 1.0547945205479452) internal successors, (77), 73 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 05:52:39,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 77 transitions. [2023-12-20 05:52:39,208 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 77 transitions. Word has length 46 [2023-12-20 05:52:39,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 05:52:39,208 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 77 transitions. [2023-12-20 05:52:39,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 1.2075471698113207) internal successors, (64), 52 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 05:52:39,208 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 77 transitions. [2023-12-20 05:52:39,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-20 05:52:39,210 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 05:52:39,210 INFO L195 NwaCegarLoop]: trace histogram [50, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 05:52:39,229 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-20 05:52:39,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 05:52:39,429 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 05:52:39,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 05:52:39,430 INFO L85 PathProgramCache]: Analyzing trace with hash -723582188, now seen corresponding path program 6 times [2023-12-20 05:52:39,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 05:52:39,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589780270] [2023-12-20 05:52:39,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 05:52:39,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 05:52:39,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 05:52:40,937 INFO L134 CoverageAnalysis]: Checked inductivity of 1317 backedges. 0 proven. 1275 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-12-20 05:52:40,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 05:52:40,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589780270] [2023-12-20 05:52:40,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589780270] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 05:52:40,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1993648382] [2023-12-20 05:52:40,937 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-20 05:52:40,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 05:52:40,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 05:52:40,944 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) [2023-12-20 05:52:40,968 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-20 05:52:41,271 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2023-12-20 05:52:41,271 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 05:52:41,273 INFO L262 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-20 05:52:41,276 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 05:52:41,441 INFO L134 CoverageAnalysis]: Checked inductivity of 1317 backedges. 50 proven. 21 refuted. 0 times theorem prover too weak. 1246 trivial. 0 not checked. [2023-12-20 05:52:41,441 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 05:52:41,608 INFO L134 CoverageAnalysis]: Checked inductivity of 1317 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 1296 trivial. 0 not checked. [2023-12-20 05:52:41,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1993648382] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 05:52:41,608 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 05:52:41,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 10, 9] total 68 [2023-12-20 05:52:41,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394424411] [2023-12-20 05:52:41,608 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 05:52:41,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2023-12-20 05:52:41,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 05:52:41,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2023-12-20 05:52:41,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1550, Invalid=3006, Unknown=0, NotChecked=0, Total=4556 [2023-12-20 05:52:41,612 INFO L87 Difference]: Start difference. First operand 74 states and 77 transitions. Second operand has 68 states, 68 states have (on average 1.2205882352941178) internal successors, (83), 68 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 05:52:42,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 05:52:42,016 INFO L93 Difference]: Finished difference Result 113 states and 135 transitions. [2023-12-20 05:52:42,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2023-12-20 05:52:42,017 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 1.2205882352941178) internal successors, (83), 68 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2023-12-20 05:52:42,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 05:52:42,019 INFO L225 Difference]: With dead ends: 113 [2023-12-20 05:52:42,019 INFO L226 Difference]: Without dead ends: 91 [2023-12-20 05:52:42,022 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 820 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1788, Invalid=4854, Unknown=0, NotChecked=0, Total=6642 [2023-12-20 05:52:42,023 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 41 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 05:52:42,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 69 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 05:52:42,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2023-12-20 05:52:42,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2023-12-20 05:52:42,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 90 states have (on average 1.0444444444444445) internal successors, (94), 90 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 05:52:42,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 94 transitions. [2023-12-20 05:52:42,043 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 94 transitions. Word has length 72 [2023-12-20 05:52:42,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 05:52:42,043 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 94 transitions. [2023-12-20 05:52:42,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 1.2205882352941178) internal successors, (83), 68 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 05:52:42,043 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 94 transitions. [2023-12-20 05:52:42,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-20 05:52:42,044 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 05:52:42,044 INFO L195 NwaCegarLoop]: trace histogram [51, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 05:52:42,066 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-20 05:52:42,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 05:52:42,251 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 05:52:42,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 05:52:42,251 INFO L85 PathProgramCache]: Analyzing trace with hash 219305498, now seen corresponding path program 7 times [2023-12-20 05:52:42,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 05:52:42,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772356745] [2023-12-20 05:52:42,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 05:52:42,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 05:52:42,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 05:52:43,832 INFO L134 CoverageAnalysis]: Checked inductivity of 1536 backedges. 0 proven. 1326 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2023-12-20 05:52:43,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 05:52:43,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772356745] [2023-12-20 05:52:43,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772356745] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 05:52:43,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [597337639] [2023-12-20 05:52:43,833 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-20 05:52:43,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 05:52:43,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 05:52:43,834 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) [2023-12-20 05:52:43,840 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-20 05:52:44,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 05:52:44,019 INFO L262 TraceCheckSpWp]: Trace formula consists of 727 conjuncts, 53 conjunts are in the unsatisfiable core [2023-12-20 05:52:44,022 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 05:52:44,090 INFO L134 CoverageAnalysis]: Checked inductivity of 1536 backedges. 0 proven. 1326 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2023-12-20 05:52:44,090 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 05:52:46,357 INFO L134 CoverageAnalysis]: Checked inductivity of 1536 backedges. 0 proven. 1326 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2023-12-20 05:52:46,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [597337639] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 05:52:46,358 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 05:52:46,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53, 53] total 106 [2023-12-20 05:52:46,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751876451] [2023-12-20 05:52:46,358 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 05:52:46,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 107 states [2023-12-20 05:52:46,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 05:52:46,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2023-12-20 05:52:46,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5671, Invalid=5671, Unknown=0, NotChecked=0, Total=11342 [2023-12-20 05:52:46,363 INFO L87 Difference]: Start difference. First operand 91 states and 94 transitions. Second operand has 107 states, 107 states have (on average 1.102803738317757) internal successors, (118), 106 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 05:52:46,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 05:52:46,470 INFO L93 Difference]: Finished difference Result 182 states and 240 transitions. [2023-12-20 05:52:46,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2023-12-20 05:52:46,470 INFO L78 Accepts]: Start accepts. Automaton has has 107 states, 107 states have (on average 1.102803738317757) internal successors, (118), 106 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2023-12-20 05:52:46,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 05:52:46,471 INFO L225 Difference]: With dead ends: 182 [2023-12-20 05:52:46,471 INFO L226 Difference]: Without dead ends: 144 [2023-12-20 05:52:46,473 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=5671, Invalid=5671, Unknown=0, NotChecked=0, Total=11342 [2023-12-20 05:52:46,474 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 05:52:46,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 64 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 05:52:46,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2023-12-20 05:52:46,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2023-12-20 05:52:46,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 143 states have (on average 1.027972027972028) internal successors, (147), 143 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 05:52:46,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 147 transitions. [2023-12-20 05:52:46,503 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 147 transitions. Word has length 89 [2023-12-20 05:52:46,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 05:52:46,503 INFO L495 AbstractCegarLoop]: Abstraction has 144 states and 147 transitions. [2023-12-20 05:52:46,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 107 states, 107 states have (on average 1.102803738317757) internal successors, (118), 106 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 05:52:46,504 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 147 transitions. [2023-12-20 05:52:46,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-20 05:52:46,505 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 05:52:46,506 INFO L195 NwaCegarLoop]: trace histogram [104, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 05:52:46,518 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-20 05:52:46,711 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,SelfDestructingSolverStorable8 [2023-12-20 05:52:46,712 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 05:52:46,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 05:52:46,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1987397716, now seen corresponding path program 8 times [2023-12-20 05:52:46,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 05:52:46,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394067216] [2023-12-20 05:52:46,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 05:52:46,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 05:52:46,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 05:52:51,811 INFO L134 CoverageAnalysis]: Checked inductivity of 5670 backedges. 0 proven. 5460 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2023-12-20 05:52:51,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 05:52:51,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394067216] [2023-12-20 05:52:51,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394067216] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 05:52:51,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1674888818] [2023-12-20 05:52:51,812 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-20 05:52:51,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 05:52:51,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 05:52:51,813 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 05:52:51,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-20 05:52:52,089 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-20 05:52:52,090 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 05:52:52,096 INFO L262 TraceCheckSpWp]: Trace formula consists of 1204 conjuncts, 106 conjunts are in the unsatisfiable core [2023-12-20 05:52:52,100 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 05:52:52,231 INFO L134 CoverageAnalysis]: Checked inductivity of 5670 backedges. 0 proven. 5460 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2023-12-20 05:52:52,232 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 05:53:00,341 INFO L134 CoverageAnalysis]: Checked inductivity of 5670 backedges. 0 proven. 5460 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2023-12-20 05:53:00,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1674888818] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 05:53:00,342 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 05:53:00,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [106, 106, 106] total 212 [2023-12-20 05:53:00,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328839281] [2023-12-20 05:53:00,342 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 05:53:00,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 213 states [2023-12-20 05:53:00,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 05:53:00,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 213 interpolants. [2023-12-20 05:53:00,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22578, Invalid=22578, Unknown=0, NotChecked=0, Total=45156 [2023-12-20 05:53:00,365 INFO L87 Difference]: Start difference. First operand 144 states and 147 transitions. Second operand has 213 states, 213 states have (on average 1.051643192488263) internal successors, (224), 212 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 05:53:00,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 05:53:00,692 INFO L93 Difference]: Finished difference Result 288 states and 399 transitions. [2023-12-20 05:53:00,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 212 states. [2023-12-20 05:53:00,692 INFO L78 Accepts]: Start accepts. Automaton has has 213 states, 213 states have (on average 1.051643192488263) internal successors, (224), 212 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 142 [2023-12-20 05:53:00,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 05:53:00,693 INFO L225 Difference]: With dead ends: 288 [2023-12-20 05:53:00,693 INFO L226 Difference]: Without dead ends: 250 [2023-12-20 05:53:00,696 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 211 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 416 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=22578, Invalid=22578, Unknown=0, NotChecked=0, Total=45156 [2023-12-20 05:53:00,696 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 05:53:00,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 05:53:00,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2023-12-20 05:53:00,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 250. [2023-12-20 05:53:00,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 249 states have (on average 1.0160642570281124) internal successors, (253), 249 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 05:53:00,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 253 transitions. [2023-12-20 05:53:00,706 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 253 transitions. Word has length 142 [2023-12-20 05:53:00,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 05:53:00,706 INFO L495 AbstractCegarLoop]: Abstraction has 250 states and 253 transitions. [2023-12-20 05:53:00,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 213 states, 213 states have (on average 1.051643192488263) internal successors, (224), 212 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 05:53:00,707 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 253 transitions. [2023-12-20 05:53:00,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2023-12-20 05:53:00,710 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 05:53:00,710 INFO L195 NwaCegarLoop]: trace histogram [210, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 05:53:00,717 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-20 05:53:00,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-20 05:53:00,918 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 05:53:00,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 05:53:00,918 INFO L85 PathProgramCache]: Analyzing trace with hash -1526923244, now seen corresponding path program 9 times [2023-12-20 05:53:00,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 05:53:00,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130585210] [2023-12-20 05:53:00,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 05:53:00,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 05:53:01,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 05:53:16,667 INFO L134 CoverageAnalysis]: Checked inductivity of 22365 backedges. 0 proven. 22155 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2023-12-20 05:53:16,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 05:53:16,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130585210] [2023-12-20 05:53:16,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130585210] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 05:53:16,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1256238342] [2023-12-20 05:53:16,667 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-20 05:53:16,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 05:53:16,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 05:53:16,669 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 05:53:16,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-20 05:53:18,367 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2023-12-20 05:53:18,368 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 05:53:18,374 INFO L262 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-20 05:53:18,378 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 05:53:19,385 INFO L134 CoverageAnalysis]: Checked inductivity of 22365 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 22260 trivial. 0 not checked. [2023-12-20 05:53:19,386 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 05:53:20,124 INFO L134 CoverageAnalysis]: Checked inductivity of 22365 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 22260 trivial. 0 not checked. [2023-12-20 05:53:20,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1256238342] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 05:53:20,125 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 05:53:20,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [212, 17, 17] total 243 [2023-12-20 05:53:20,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537090755] [2023-12-20 05:53:20,125 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 05:53:20,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 243 states [2023-12-20 05:53:20,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 05:53:20,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 243 interpolants. [2023-12-20 05:53:20,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23073, Invalid=35733, Unknown=0, NotChecked=0, Total=58806 [2023-12-20 05:53:20,134 INFO L87 Difference]: Start difference. First operand 250 states and 253 transitions. Second operand has 243 states, 243 states have (on average 1.0576131687242798) internal successors, (257), 243 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 05:53:20,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 05:53:20,580 INFO L93 Difference]: Finished difference Result 321 states and 359 transitions. [2023-12-20 05:53:20,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 243 states. [2023-12-20 05:53:20,581 INFO L78 Accepts]: Start accepts. Automaton has has 243 states, 243 states have (on average 1.0576131687242798) internal successors, (257), 243 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 248 [2023-12-20 05:53:20,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 05:53:20,583 INFO L225 Difference]: With dead ends: 321 [2023-12-20 05:53:20,583 INFO L226 Difference]: Without dead ends: 283 [2023-12-20 05:53:20,587 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 706 GetRequests, 465 SyntacticMatches, 0 SemanticMatches, 241 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6300 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=23073, Invalid=35733, Unknown=0, NotChecked=0, Total=58806 [2023-12-20 05:53:20,588 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 05:53:20,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 103 Invalid, 443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 05:53:20,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2023-12-20 05:53:20,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 283. [2023-12-20 05:53:20,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 282 states have (on average 1.0141843971631206) internal successors, (286), 282 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 05:53:20,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 286 transitions. [2023-12-20 05:53:20,600 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 286 transitions. Word has length 248 [2023-12-20 05:53:20,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 05:53:20,600 INFO L495 AbstractCegarLoop]: Abstraction has 283 states and 286 transitions. [2023-12-20 05:53:20,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 243 states, 243 states have (on average 1.0576131687242798) internal successors, (257), 243 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 05:53:20,600 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 286 transitions. [2023-12-20 05:53:20,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2023-12-20 05:53:20,602 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 05:53:20,602 INFO L195 NwaCegarLoop]: trace histogram [211, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 05:53:20,610 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-20 05:53:20,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-20 05:53:20,811 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 05:53:20,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 05:53:20,811 INFO L85 PathProgramCache]: Analyzing trace with hash 2146501658, now seen corresponding path program 10 times [2023-12-20 05:53:20,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 05:53:20,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264828362] [2023-12-20 05:53:20,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 05:53:20,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 05:53:21,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 05:53:37,336 INFO L134 CoverageAnalysis]: Checked inductivity of 23296 backedges. 0 proven. 22366 refuted. 0 times theorem prover too weak. 930 trivial. 0 not checked. [2023-12-20 05:53:37,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 05:53:37,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264828362] [2023-12-20 05:53:37,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264828362] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 05:53:37,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [413646443] [2023-12-20 05:53:37,337 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-20 05:53:37,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 05:53:37,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 05:53:37,338 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 05:53:37,368 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-20 05:53:37,995 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-20 05:53:37,995 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 05:53:38,009 INFO L262 TraceCheckSpWp]: Trace formula consists of 2391 conjuncts, 213 conjunts are in the unsatisfiable core [2023-12-20 05:53:38,015 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 05:53:38,225 INFO L134 CoverageAnalysis]: Checked inductivity of 23296 backedges. 0 proven. 22366 refuted. 0 times theorem prover too weak. 930 trivial. 0 not checked. [2023-12-20 05:53:38,225 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 05:54:05,306 INFO L134 CoverageAnalysis]: Checked inductivity of 23296 backedges. 0 proven. 22366 refuted. 0 times theorem prover too weak. 930 trivial. 0 not checked. [2023-12-20 05:54:05,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [413646443] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 05:54:05,306 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 05:54:05,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [213, 213, 213] total 426 [2023-12-20 05:54:05,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972225421] [2023-12-20 05:54:05,306 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 05:54:05,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 427 states [2023-12-20 05:54:05,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 05:54:05,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 427 interpolants. [2023-12-20 05:54:05,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90951, Invalid=90951, Unknown=0, NotChecked=0, Total=181902 [2023-12-20 05:54:05,328 INFO L87 Difference]: Start difference. First operand 283 states and 286 transitions. Second operand has 427 states, 427 states have (on average 1.0257611241217799) internal successors, (438), 426 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 05:54:07,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 05:54:07,471 INFO L93 Difference]: Finished difference Result 566 states and 784 transitions. [2023-12-20 05:54:07,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 426 states. [2023-12-20 05:54:07,471 INFO L78 Accepts]: Start accepts. Automaton has has 427 states, 427 states have (on average 1.0257611241217799) internal successors, (438), 426 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 281 [2023-12-20 05:54:07,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 05:54:07,478 INFO L225 Difference]: With dead ends: 566 [2023-12-20 05:54:07,478 INFO L226 Difference]: Without dead ends: 496 [2023-12-20 05:54:07,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 773 GetRequests, 348 SyntacticMatches, 0 SemanticMatches, 425 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 844 ImplicationChecksByTransitivity, 36.0s TimeCoverageRelationStatistics Valid=90951, Invalid=90951, Unknown=0, NotChecked=0, Total=181902 [2023-12-20 05:54:07,486 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 446 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-20 05:54:07,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 46 Invalid, 447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 446 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-20 05:54:07,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2023-12-20 05:54:07,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 496. [2023-12-20 05:54:07,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 496 states, 495 states have (on average 1.0080808080808081) internal successors, (499), 495 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 05:54:07,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 499 transitions. [2023-12-20 05:54:07,525 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 499 transitions. Word has length 281 [2023-12-20 05:54:07,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 05:54:07,525 INFO L495 AbstractCegarLoop]: Abstraction has 496 states and 499 transitions. [2023-12-20 05:54:07,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 427 states, 427 states have (on average 1.0257611241217799) internal successors, (438), 426 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 05:54:07,526 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 499 transitions. [2023-12-20 05:54:07,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 495 [2023-12-20 05:54:07,530 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 05:54:07,530 INFO L195 NwaCegarLoop]: trace histogram [424, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 05:54:07,552 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-20 05:54:07,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-20 05:54:07,740 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 05:54:07,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 05:54:07,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1020378540, now seen corresponding path program 11 times [2023-12-20 05:54:07,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 05:54:07,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896655845] [2023-12-20 05:54:07,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 05:54:07,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 05:54:08,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 05:55:26,387 INFO L134 CoverageAnalysis]: Checked inductivity of 91030 backedges. 0 proven. 90100 refuted. 0 times theorem prover too weak. 930 trivial. 0 not checked. [2023-12-20 05:55:26,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 05:55:26,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896655845] [2023-12-20 05:55:26,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896655845] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 05:55:26,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [164690669] [2023-12-20 05:55:26,388 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-20 05:55:26,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 05:55:26,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 05:55:26,391 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 05:55:26,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process Received shutdown request... [2023-12-20 06:06:19,399 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-20 06:06:19,399 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-20 06:06:20,432 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 [2023-12-20 06:06:20,599 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forcibly destroying the process [2023-12-20 06:06:20,618 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 06:06:20,618 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-20 06:06:20,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [426] total 426 [2023-12-20 06:06:20,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576201255] [2023-12-20 06:06:20,619 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-20 06:06:20,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 427 states [2023-12-20 06:06:20,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 06:06:20,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 427 interpolants. [2023-12-20 06:06:20,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90951, Invalid=90951, Unknown=0, NotChecked=0, Total=181902 [2023-12-20 06:06:20,650 INFO L87 Difference]: Start difference. First operand 496 states and 499 transitions. Second operand has 427 states, 427 states have (on average 1.0210772833723654) internal successors, (436), 426 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 06:06:20,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-20 06:06:20,660 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 425 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 42.7s TimeCoverageRelationStatistics Valid=90951, Invalid=90951, Unknown=0, NotChecked=0, Total=181902 [2023-12-20 06:06:20,660 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 06:06:20,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 06:06:20,661 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 137 [2023-12-20 06:06:20,662 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-20 06:06:20,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-20 06:06:20,663 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (496states) and FLOYD_HOARE automaton (currently 2 states, 427 states before enhancement),while ReachableStatesComputation was computing reachable states (1 states constructed, input type IntersectNwa). [2023-12-20 06:06:20,666 INFO L445 BasicCegarLoop]: Path program histogram: [11, 1, 1] [2023-12-20 06:06:20,668 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-20 06:06:20,669 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.12 06:06:20 BoogieIcfgContainer [2023-12-20 06:06:20,669 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-20 06:06:20,670 INFO L158 Benchmark]: Toolchain (without parser) took 874273.40ms. Allocated memory was 276.8MB in the beginning and 1.5GB in the end (delta: 1.2GB). Free memory was 221.9MB in the beginning and 520.5MB in the end (delta: -298.6MB). Peak memory consumption was 884.2MB. Max. memory is 8.0GB. [2023-12-20 06:06:20,670 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 204.5MB. Free memory was 151.7MB in the beginning and 151.5MB in the end (delta: 129.4kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-20 06:06:20,670 INFO L158 Benchmark]: CACSL2BoogieTranslator took 147.44ms. Allocated memory is still 276.8MB. Free memory was 221.9MB in the beginning and 210.8MB in the end (delta: 11.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-20 06:06:20,670 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.04ms. Allocated memory is still 276.8MB. Free memory was 210.8MB in the beginning and 209.3MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-20 06:06:20,670 INFO L158 Benchmark]: Boogie Preprocessor took 54.80ms. Allocated memory is still 276.8MB. Free memory was 209.3MB in the beginning and 207.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-20 06:06:20,670 INFO L158 Benchmark]: RCFGBuilder took 230.97ms. Allocated memory is still 276.8MB. Free memory was 207.2MB in the beginning and 193.5MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-12-20 06:06:20,671 INFO L158 Benchmark]: TraceAbstraction took 873813.78ms. Allocated memory was 276.8MB in the beginning and 1.5GB in the end (delta: 1.2GB). Free memory was 193.0MB in the beginning and 520.5MB in the end (delta: -327.5MB). Peak memory consumption was 854.8MB. Max. memory is 8.0GB. [2023-12-20 06:06:20,672 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 204.5MB. Free memory was 151.7MB in the beginning and 151.5MB in the end (delta: 129.4kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 147.44ms. Allocated memory is still 276.8MB. Free memory was 221.9MB in the beginning and 210.8MB in the end (delta: 11.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 22.04ms. Allocated memory is still 276.8MB. Free memory was 210.8MB in the beginning and 209.3MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 54.80ms. Allocated memory is still 276.8MB. Free memory was 209.3MB in the beginning and 207.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 230.97ms. Allocated memory is still 276.8MB. Free memory was 207.2MB in the beginning and 193.5MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 873813.78ms. Allocated memory was 276.8MB in the beginning and 1.5GB in the end (delta: 1.2GB). Free memory was 193.0MB in the beginning and 520.5MB in the end (delta: -327.5MB). Peak memory consumption was 854.8MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 13]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 13). Cancelled while NwaCegarLoop was constructing difference of abstraction (496states) and FLOYD_HOARE automaton (currently 2 states, 427 states before enhancement),while ReachableStatesComputation was computing reachable states (1 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 873.8s, OverallIterations: 13, TraceHistogramMax: 424, PathProgramHistogramMax: 11, EmptinessCheckTime: 0.0s, AutomataDifference: 3.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 41 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 41 mSDsluCounter, 562 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 442 mSDsCounter, 192 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1491 IncrementalHoareTripleChecker+Invalid, 1683 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 192 mSolverCounterUnsat, 120 mSDtfsCounter, 1491 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3057 GetRequests, 1456 SyntacticMatches, 0 SemanticMatches, 1601 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8799 ImplicationChecksByTransitivity, 106.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=496occurred in iteration=12, InterpolantAutomatonStates: 1178, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 12 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 51.0s SatisfiabilityAnalysisTime, 160.0s InterpolantComputationTime, 2454 NumberOfCodeBlocks, 2212 NumberOfCodeBlocksAsserted, 54 NumberOfCheckSat, 3384 ConstructedInterpolants, 0 QuantifiedInterpolants, 7362 SizeOfPredicates, 1 NumberOfNonLiveVariables, 6023 ConjunctsInSsa, 453 ConjunctsInUnsatCore, 34 InterpolantComputations, 2 PerfectInterpolantSequences, 52740/255162 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