/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/loop-acceleration/array_4.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 04:47:18,586 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 04:47:18,627 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-16 04:47:18,633 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 04:47:18,634 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 04:47:18,661 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 04:47:18,662 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 04:47:18,662 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 04:47:18,662 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 04:47:18,665 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 04:47:18,665 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 04:47:18,666 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 04:47:18,666 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 04:47:18,667 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 04:47:18,667 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 04:47:18,668 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 04:47:18,668 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 04:47:18,668 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 04:47:18,668 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 04:47:18,668 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 04:47:18,669 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 04:47:18,669 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 04:47:18,669 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 04:47:18,669 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 04:47:18,669 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 04:47:18,670 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 04:47:18,670 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 04:47:18,670 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 04:47:18,670 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 04:47:18,670 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 04:47:18,671 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 04:47:18,671 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 04:47:18,671 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 04:47:18,672 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 04:47:18,672 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 04:47:18,672 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 04:47:18,672 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 04:47:18,672 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 04:47:18,672 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 04:47:18,672 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 04:47:18,673 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 04:47:18,673 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 04:47:18,673 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 04:47:18,673 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-16 04:47:18,865 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 04:47:18,890 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 04:47:18,892 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 04:47:18,892 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 04:47:18,893 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 04:47:18,893 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/array_4.i [2023-12-16 04:47:20,103 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 04:47:20,245 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 04:47:20,246 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/array_4.i [2023-12-16 04:47:20,266 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0cd9cac0d/d7f8b07c56674a18bc5a81bfc5319f9b/FLAG9ff48a88b [2023-12-16 04:47:20,289 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0cd9cac0d/d7f8b07c56674a18bc5a81bfc5319f9b [2023-12-16 04:47:20,291 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 04:47:20,292 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 04:47:20,298 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 04:47:20,298 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 04:47:20,302 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 04:47:20,302 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 04:47:20" (1/1) ... [2023-12-16 04:47:20,303 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c5c9552 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:47:20, skipping insertion in model container [2023-12-16 04:47:20,303 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 04:47:20" (1/1) ... [2023-12-16 04:47:20,315 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 04:47:20,472 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/array_4.i[848,861] [2023-12-16 04:47:20,492 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 04:47:20,502 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 04:47:20,511 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/array_4.i[848,861] [2023-12-16 04:47:20,515 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 04:47:20,534 INFO L206 MainTranslator]: Completed translation [2023-12-16 04:47:20,535 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:47:20 WrapperNode [2023-12-16 04:47:20,535 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 04:47:20,535 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 04:47:20,535 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 04:47:20,536 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 04:47:20,540 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:47:20" (1/1) ... [2023-12-16 04:47:20,544 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:47:20" (1/1) ... [2023-12-16 04:47:20,561 INFO L138 Inliner]: procedures = 16, calls = 12, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 43 [2023-12-16 04:47:20,561 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 04:47:20,562 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 04:47:20,562 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 04:47:20,562 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 04:47:20,570 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:47:20" (1/1) ... [2023-12-16 04:47:20,570 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:47:20" (1/1) ... [2023-12-16 04:47:20,578 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:47:20" (1/1) ... [2023-12-16 04:47:20,592 INFO L175 MemorySlicer]: Split 5 memory accesses to 2 slices as follows [2, 3]. 60 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2023-12-16 04:47:20,592 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:47:20" (1/1) ... [2023-12-16 04:47:20,592 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:47:20" (1/1) ... [2023-12-16 04:47:20,595 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:47:20" (1/1) ... [2023-12-16 04:47:20,599 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:47:20" (1/1) ... [2023-12-16 04:47:20,600 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:47:20" (1/1) ... [2023-12-16 04:47:20,601 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:47:20" (1/1) ... [2023-12-16 04:47:20,602 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 04:47:20,603 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 04:47:20,603 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 04:47:20,603 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 04:47:20,603 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:47:20" (1/1) ... [2023-12-16 04:47:20,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 04:47:20,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:47:20,671 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-16 04:47:20,690 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-16 04:47:20,716 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 04:47:20,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 04:47:20,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-16 04:47:20,717 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-16 04:47:20,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-12-16 04:47:20,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-12-16 04:47:20,718 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 04:47:20,718 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 04:47:20,719 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-12-16 04:47:20,719 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-12-16 04:47:20,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-16 04:47:20,786 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 04:47:20,788 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 04:47:20,870 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 04:47:20,891 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 04:47:20,891 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-16 04:47:20,892 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 04:47:20 BoogieIcfgContainer [2023-12-16 04:47:20,892 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 04:47:20,893 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 04:47:20,893 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 04:47:20,896 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 04:47:20,896 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 04:47:20" (1/3) ... [2023-12-16 04:47:20,896 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@605242a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 04:47:20, skipping insertion in model container [2023-12-16 04:47:20,896 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:47:20" (2/3) ... [2023-12-16 04:47:20,897 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@605242a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 04:47:20, skipping insertion in model container [2023-12-16 04:47:20,897 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 04:47:20" (3/3) ... [2023-12-16 04:47:20,898 INFO L112 eAbstractionObserver]: Analyzing ICFG array_4.i [2023-12-16 04:47:20,910 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 04:47:20,911 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 04:47:20,940 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 04:47:20,945 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;@4d67df38, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 04:47:20,945 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 04:47:20,947 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 10 states have internal predecessors, (15), 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) [2023-12-16 04:47:20,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-16 04:47:20,951 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:47:20,951 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:47:20,952 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:47:20,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:47:20,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1638018427, now seen corresponding path program 1 times [2023-12-16 04:47:21,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:47:21,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605213200] [2023-12-16 04:47:21,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:47:21,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:47:21,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:47:21,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:47:21,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:47:21,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605213200] [2023-12-16 04:47:21,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605213200] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:47:21,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:47:21,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 04:47:21,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443831212] [2023-12-16 04:47:21,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:47:21,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 04:47:21,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:47:21,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 04:47:21,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 04:47:21,230 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 10 states have internal predecessors, (15), 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 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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) [2023-12-16 04:47:21,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:47:21,272 INFO L93 Difference]: Finished difference Result 28 states and 39 transitions. [2023-12-16 04:47:21,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 04:47:21,275 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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 7 [2023-12-16 04:47:21,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:47:21,279 INFO L225 Difference]: With dead ends: 28 [2023-12-16 04:47:21,279 INFO L226 Difference]: Without dead ends: 16 [2023-12-16 04:47:21,282 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 04:47:21,285 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 6 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 04:47:21,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 10 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 04:47:21,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2023-12-16 04:47:21,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 10. [2023-12-16 04:47:21,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 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) [2023-12-16 04:47:21,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2023-12-16 04:47:21,308 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 7 [2023-12-16 04:47:21,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:47:21,308 INFO L495 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2023-12-16 04:47:21,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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) [2023-12-16 04:47:21,309 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2023-12-16 04:47:21,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-16 04:47:21,309 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:47:21,309 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:47:21,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-16 04:47:21,310 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:47:21,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:47:21,311 INFO L85 PathProgramCache]: Analyzing trace with hash 792230039, now seen corresponding path program 1 times [2023-12-16 04:47:21,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:47:21,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448784840] [2023-12-16 04:47:21,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:47:21,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:47:21,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:47:21,388 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:47:21,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:47:21,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448784840] [2023-12-16 04:47:21,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448784840] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 04:47:21,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1022012473] [2023-12-16 04:47:21,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:47:21,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:47:21,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:47:21,392 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:47:21,404 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-16 04:47:21,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:47:21,452 INFO L262 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 04:47:21,454 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:47:21,479 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:47:21,479 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:47:21,496 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:47:21,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1022012473] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:47:21,497 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 04:47:21,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-12-16 04:47:21,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917981228] [2023-12-16 04:47:21,498 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 04:47:21,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 04:47:21,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:47:21,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 04:47:21,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-12-16 04:47:21,499 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 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) [2023-12-16 04:47:21,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:47:21,574 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2023-12-16 04:47:21,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 04:47:21,574 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 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 9 [2023-12-16 04:47:21,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:47:21,575 INFO L225 Difference]: With dead ends: 44 [2023-12-16 04:47:21,575 INFO L226 Difference]: Without dead ends: 37 [2023-12-16 04:47:21,575 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-12-16 04:47:21,576 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 30 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 04:47:21,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 20 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 04:47:21,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-12-16 04:47:21,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 13. [2023-12-16 04:47:21,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 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) [2023-12-16 04:47:21,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2023-12-16 04:47:21,579 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2023-12-16 04:47:21,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:47:21,579 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2023-12-16 04:47:21,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 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) [2023-12-16 04:47:21,580 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2023-12-16 04:47:21,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-12-16 04:47:21,580 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:47:21,580 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:47:21,588 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-16 04:47:21,780 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 [2023-12-16 04:47:21,781 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:47:21,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:47:21,788 INFO L85 PathProgramCache]: Analyzing trace with hash 411214855, now seen corresponding path program 2 times [2023-12-16 04:47:21,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:47:21,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750074508] [2023-12-16 04:47:21,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:47:21,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:47:21,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:47:21,928 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-16 04:47:21,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:47:21,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750074508] [2023-12-16 04:47:21,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750074508] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:47:21,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:47:21,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 04:47:21,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481710364] [2023-12-16 04:47:21,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:47:21,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 04:47:21,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:47:21,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 04:47:21,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 04:47:21,931 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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) [2023-12-16 04:47:21,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:47:21,950 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2023-12-16 04:47:21,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 04:47:21,950 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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 12 [2023-12-16 04:47:21,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:47:21,950 INFO L225 Difference]: With dead ends: 19 [2023-12-16 04:47:21,950 INFO L226 Difference]: Without dead ends: 15 [2023-12-16 04:47:21,951 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 04:47:21,952 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 2 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 04:47:21,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 10 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 04:47:21,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2023-12-16 04:47:21,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2023-12-16 04:47:21,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 14 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) [2023-12-16 04:47:21,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2023-12-16 04:47:21,954 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 12 [2023-12-16 04:47:21,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:47:21,955 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2023-12-16 04:47:21,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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) [2023-12-16 04:47:21,955 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2023-12-16 04:47:21,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-12-16 04:47:21,955 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:47:21,955 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:47:21,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-16 04:47:21,956 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:47:21,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:47:21,956 INFO L85 PathProgramCache]: Analyzing trace with hash 802981353, now seen corresponding path program 1 times [2023-12-16 04:47:21,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:47:21,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534677467] [2023-12-16 04:47:21,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:47:21,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:47:21,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:47:22,092 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-16 04:47:22,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:47:22,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534677467] [2023-12-16 04:47:22,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534677467] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 04:47:22,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1495886982] [2023-12-16 04:47:22,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:47:22,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:47:22,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:47:22,112 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:47:22,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-16 04:47:22,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:47:22,187 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 04:47:22,189 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:47:22,243 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-16 04:47:22,243 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:47:22,302 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-16 04:47:22,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1495886982] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:47:22,304 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 04:47:22,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 14 [2023-12-16 04:47:22,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156842676] [2023-12-16 04:47:22,304 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 04:47:22,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-16 04:47:22,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:47:22,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-16 04:47:22,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2023-12-16 04:47:22,310 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand has 14 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 14 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) [2023-12-16 04:47:22,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:47:22,468 INFO L93 Difference]: Finished difference Result 66 states and 82 transitions. [2023-12-16 04:47:22,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-16 04:47:22,468 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 14 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) Word has length 14 [2023-12-16 04:47:22,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:47:22,470 INFO L225 Difference]: With dead ends: 66 [2023-12-16 04:47:22,470 INFO L226 Difference]: Without dead ends: 39 [2023-12-16 04:47:22,470 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=188, Invalid=318, Unknown=0, NotChecked=0, Total=506 [2023-12-16 04:47:22,473 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 41 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 04:47:22,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 28 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 04:47:22,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2023-12-16 04:47:22,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2023-12-16 04:47:22,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.0526315789473684) internal successors, (40), 38 states have internal predecessors, (40), 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) [2023-12-16 04:47:22,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2023-12-16 04:47:22,484 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 14 [2023-12-16 04:47:22,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:47:22,485 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2023-12-16 04:47:22,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 14 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) [2023-12-16 04:47:22,485 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2023-12-16 04:47:22,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-16 04:47:22,485 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:47:22,486 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:47:22,499 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-16 04:47:22,704 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,SelfDestructingSolverStorable3 [2023-12-16 04:47:22,705 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:47:22,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:47:22,705 INFO L85 PathProgramCache]: Analyzing trace with hash 428861019, now seen corresponding path program 2 times [2023-12-16 04:47:22,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:47:22,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303742710] [2023-12-16 04:47:22,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:47:22,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:47:22,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:47:22,973 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2023-12-16 04:47:22,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:47:22,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303742710] [2023-12-16 04:47:22,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303742710] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 04:47:22,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1259438226] [2023-12-16 04:47:22,973 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 04:47:22,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:47:22,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:47:22,975 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:47:23,013 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-16 04:47:23,049 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-16 04:47:23,049 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 04:47:23,050 INFO L262 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-16 04:47:23,053 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:47:23,167 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2023-12-16 04:47:23,167 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:47:23,332 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2023-12-16 04:47:23,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1259438226] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:47:23,333 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 04:47:23,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2023-12-16 04:47:23,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704406327] [2023-12-16 04:47:23,333 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 04:47:23,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-16 04:47:23,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:47:23,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-16 04:47:23,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2023-12-16 04:47:23,335 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand has 25 states, 25 states have (on average 1.32) internal successors, (33), 24 states have internal predecessors, (33), 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) [2023-12-16 04:47:23,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:47:23,465 INFO L93 Difference]: Finished difference Result 150 states and 163 transitions. [2023-12-16 04:47:23,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-16 04:47:23,465 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.32) internal successors, (33), 24 states have internal predecessors, (33), 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 38 [2023-12-16 04:47:23,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:47:23,466 INFO L225 Difference]: With dead ends: 150 [2023-12-16 04:47:23,466 INFO L226 Difference]: Without dead ends: 123 [2023-12-16 04:47:23,467 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2023-12-16 04:47:23,467 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 133 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 04:47:23,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 56 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 04:47:23,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2023-12-16 04:47:23,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 51. [2023-12-16 04:47:23,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.04) internal successors, (52), 50 states have internal predecessors, (52), 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) [2023-12-16 04:47:23,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 52 transitions. [2023-12-16 04:47:23,474 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 52 transitions. Word has length 38 [2023-12-16 04:47:23,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:47:23,474 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 52 transitions. [2023-12-16 04:47:23,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.32) internal successors, (33), 24 states have internal predecessors, (33), 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) [2023-12-16 04:47:23,474 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 52 transitions. [2023-12-16 04:47:23,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-16 04:47:23,475 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:47:23,475 INFO L195 NwaCegarLoop]: trace histogram [22, 11, 10, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:47:23,508 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-16 04:47:23,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:47:23,694 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:47:23,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:47:23,694 INFO L85 PathProgramCache]: Analyzing trace with hash 1031393883, now seen corresponding path program 3 times [2023-12-16 04:47:23,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:47:23,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610588085] [2023-12-16 04:47:23,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:47:23,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:47:23,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:47:24,143 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2023-12-16 04:47:24,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:47:24,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610588085] [2023-12-16 04:47:24,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610588085] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 04:47:24,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1693904826] [2023-12-16 04:47:24,144 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-16 04:47:24,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:47:24,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:47:24,145 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:47:24,184 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-16 04:47:25,164 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2023-12-16 04:47:25,164 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 04:47:25,168 INFO L262 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-16 04:47:25,170 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:47:25,224 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2023-12-16 04:47:25,224 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:47:25,515 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2023-12-16 04:47:25,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1693904826] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:47:25,515 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 04:47:25,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 14, 14] total 39 [2023-12-16 04:47:25,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642951924] [2023-12-16 04:47:25,516 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 04:47:25,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-12-16 04:47:25,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:47:25,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-12-16 04:47:25,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=671, Invalid=811, Unknown=0, NotChecked=0, Total=1482 [2023-12-16 04:47:25,518 INFO L87 Difference]: Start difference. First operand 51 states and 52 transitions. Second operand has 39 states, 39 states have (on average 2.1538461538461537) internal successors, (84), 39 states have internal predecessors, (84), 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) [2023-12-16 04:47:26,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:47:26,017 INFO L93 Difference]: Finished difference Result 184 states and 219 transitions. [2023-12-16 04:47:26,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2023-12-16 04:47:26,017 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.1538461538461537) internal successors, (84), 39 states have internal predecessors, (84), 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 50 [2023-12-16 04:47:26,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:47:26,018 INFO L225 Difference]: With dead ends: 184 [2023-12-16 04:47:26,018 INFO L226 Difference]: Without dead ends: 109 [2023-12-16 04:47:26,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 468 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1343, Invalid=2563, Unknown=0, NotChecked=0, Total=3906 [2023-12-16 04:47:26,020 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 141 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 04:47:26,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 40 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 04:47:26,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2023-12-16 04:47:26,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2023-12-16 04:47:26,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 108 states have (on average 1.0185185185185186) internal successors, (110), 108 states have internal predecessors, (110), 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) [2023-12-16 04:47:26,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 110 transitions. [2023-12-16 04:47:26,028 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 110 transitions. Word has length 50 [2023-12-16 04:47:26,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:47:26,028 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 110 transitions. [2023-12-16 04:47:26,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.1538461538461537) internal successors, (84), 39 states have internal predecessors, (84), 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) [2023-12-16 04:47:26,029 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 110 transitions. [2023-12-16 04:47:26,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-16 04:47:26,030 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:47:26,030 INFO L195 NwaCegarLoop]: trace histogram [35, 34, 32, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:47:26,045 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-16 04:47:26,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:47:26,237 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:47:26,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:47:26,238 INFO L85 PathProgramCache]: Analyzing trace with hash 370481035, now seen corresponding path program 4 times [2023-12-16 04:47:26,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:47:26,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203440963] [2023-12-16 04:47:26,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:47:26,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:47:26,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:47:27,162 INFO L134 CoverageAnalysis]: Checked inductivity of 1718 backedges. 0 proven. 528 refuted. 0 times theorem prover too weak. 1190 trivial. 0 not checked. [2023-12-16 04:47:27,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:47:27,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203440963] [2023-12-16 04:47:27,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203440963] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 04:47:27,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [247758524] [2023-12-16 04:47:27,163 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-16 04:47:27,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:47:27,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:47:27,164 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:47:27,173 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-16 04:47:27,339 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-16 04:47:27,340 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 04:47:27,342 INFO L262 TraceCheckSpWp]: Trace formula consists of 507 conjuncts, 34 conjunts are in the unsatisfiable core [2023-12-16 04:47:27,346 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:47:27,404 INFO L134 CoverageAnalysis]: Checked inductivity of 1718 backedges. 0 proven. 528 refuted. 0 times theorem prover too weak. 1190 trivial. 0 not checked. [2023-12-16 04:47:27,404 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:47:28,757 INFO L134 CoverageAnalysis]: Checked inductivity of 1718 backedges. 0 proven. 528 refuted. 0 times theorem prover too weak. 1190 trivial. 0 not checked. [2023-12-16 04:47:28,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [247758524] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:47:28,757 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 04:47:28,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34, 34] total 68 [2023-12-16 04:47:28,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998636273] [2023-12-16 04:47:28,758 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 04:47:28,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2023-12-16 04:47:28,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:47:28,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2023-12-16 04:47:28,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2346, Invalid=2346, Unknown=0, NotChecked=0, Total=4692 [2023-12-16 04:47:28,761 INFO L87 Difference]: Start difference. First operand 109 states and 110 transitions. Second operand has 69 states, 69 states have (on average 1.1159420289855073) internal successors, (77), 68 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) [2023-12-16 04:47:29,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:47:29,404 INFO L93 Difference]: Finished difference Result 410 states and 445 transitions. [2023-12-16 04:47:29,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2023-12-16 04:47:29,405 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 1.1159420289855073) internal successors, (77), 68 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) Word has length 108 [2023-12-16 04:47:29,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:47:29,408 INFO L225 Difference]: With dead ends: 410 [2023-12-16 04:47:29,408 INFO L226 Difference]: Without dead ends: 335 [2023-12-16 04:47:29,410 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=2346, Invalid=2346, Unknown=0, NotChecked=0, Total=4692 [2023-12-16 04:47:29,410 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 544 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 544 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 04:47:29,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [544 Valid, 116 Invalid, 451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 04:47:29,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2023-12-16 04:47:29,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 143. [2023-12-16 04:47:29,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 142 states have (on average 1.0140845070422535) internal successors, (144), 142 states have internal predecessors, (144), 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) [2023-12-16 04:47:29,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 144 transitions. [2023-12-16 04:47:29,430 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 144 transitions. Word has length 108 [2023-12-16 04:47:29,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:47:29,430 INFO L495 AbstractCegarLoop]: Abstraction has 143 states and 144 transitions. [2023-12-16 04:47:29,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 1.1159420289855073) internal successors, (77), 68 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) [2023-12-16 04:47:29,431 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 144 transitions. [2023-12-16 04:47:29,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-16 04:47:29,432 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:47:29,432 INFO L195 NwaCegarLoop]: trace histogram [66, 35, 34, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:47:29,442 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-16 04:47:29,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:47:29,642 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:47:29,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:47:29,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1368410507, now seen corresponding path program 5 times [2023-12-16 04:47:29,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:47:29,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988493955] [2023-12-16 04:47:29,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:47:29,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:47:29,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:47:32,186 INFO L134 CoverageAnalysis]: Checked inductivity of 3401 backedges. 0 proven. 2211 refuted. 0 times theorem prover too weak. 1190 trivial. 0 not checked. [2023-12-16 04:47:32,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:47:32,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988493955] [2023-12-16 04:47:32,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988493955] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 04:47:32,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [136418355] [2023-12-16 04:47:32,186 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-16 04:47:32,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:47:32,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:47:32,187 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:47:32,192 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process Received shutdown request... [2023-12-16 04:48:39,212 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 04:48:39,212 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 04:48:40,234 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 [2023-12-16 04:48:40,413 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forcibly destroying the process [2023-12-16 04:48:40,423 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:48:40,423 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-16 04:48:40,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68] total 68 [2023-12-16 04:48:40,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095803303] [2023-12-16 04:48:40,423 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-16 04:48:40,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2023-12-16 04:48:40,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:48:40,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2023-12-16 04:48:40,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2346, Invalid=2346, Unknown=0, NotChecked=0, Total=4692 [2023-12-16 04:48:40,426 INFO L87 Difference]: Start difference. First operand 143 states and 144 transitions. Second operand has 69 states, 69 states have (on average 1.0869565217391304) internal successors, (75), 68 states have internal predecessors, (75), 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) [2023-12-16 04:48:40,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 04:48:40,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=2346, Invalid=2346, Unknown=0, NotChecked=0, Total=4692 [2023-12-16 04:48:40,454 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 04:48:40,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 04:48:40,455 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 04:48:40,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:48:40,456 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 137 [2023-12-16 04:48:40,457 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (143states) and FLOYD_HOARE automaton (currently 2 states, 69 states before enhancement),while ReachableStatesComputation was computing reachable states (1 states constructed, input type IntersectNwa). [2023-12-16 04:48:40,464 INFO L445 BasicCegarLoop]: Path program histogram: [5, 2, 1] [2023-12-16 04:48:40,465 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 04:48:40,466 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 04:48:40 BoogieIcfgContainer [2023-12-16 04:48:40,466 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 04:48:40,467 INFO L158 Benchmark]: Toolchain (without parser) took 80175.01ms. Allocated memory was 321.9MB in the beginning and 464.5MB in the end (delta: 142.6MB). Free memory was 268.3MB in the beginning and 210.8MB in the end (delta: 57.5MB). Peak memory consumption was 201.6MB. Max. memory is 8.0GB. [2023-12-16 04:48:40,467 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 188.7MB. Free memory is still 138.2MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 04:48:40,467 INFO L158 Benchmark]: CACSL2BoogieTranslator took 237.06ms. Allocated memory is still 321.9MB. Free memory was 267.9MB in the beginning and 257.3MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-16 04:48:40,467 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.00ms. Allocated memory is still 321.9MB. Free memory was 257.3MB in the beginning and 255.7MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-16 04:48:40,467 INFO L158 Benchmark]: Boogie Preprocessor took 40.22ms. Allocated memory is still 321.9MB. Free memory was 255.7MB in the beginning and 254.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-16 04:48:40,467 INFO L158 Benchmark]: RCFGBuilder took 289.34ms. Allocated memory is still 321.9MB. Free memory was 254.0MB in the beginning and 243.0MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-16 04:48:40,467 INFO L158 Benchmark]: TraceAbstraction took 79573.03ms. Allocated memory was 321.9MB in the beginning and 464.5MB in the end (delta: 142.6MB). Free memory was 242.4MB in the beginning and 210.8MB in the end (delta: 31.7MB). Peak memory consumption was 175.4MB. Max. memory is 8.0GB. [2023-12-16 04:48:40,469 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 188.7MB. Free memory is still 138.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 237.06ms. Allocated memory is still 321.9MB. Free memory was 267.9MB in the beginning and 257.3MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 26.00ms. Allocated memory is still 321.9MB. Free memory was 257.3MB in the beginning and 255.7MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 40.22ms. Allocated memory is still 321.9MB. Free memory was 255.7MB in the beginning and 254.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 289.34ms. Allocated memory is still 321.9MB. Free memory was 254.0MB in the beginning and 243.0MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 79573.03ms. Allocated memory was 321.9MB in the beginning and 464.5MB in the end (delta: 142.6MB). Free memory was 242.4MB in the beginning and 210.8MB in the end (delta: 31.7MB). Peak memory consumption was 175.4MB. 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: 17]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 17). Cancelled while NwaCegarLoop was constructing difference of abstraction (143states) and FLOYD_HOARE automaton (currently 2 states, 69 states before enhancement),while ReachableStatesComputation was computing reachable states (1 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 79.5s, OverallIterations: 8, TraceHistogramMax: 66, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 897 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 897 mSDsluCounter, 280 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 246 mSDsCounter, 363 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 604 IncrementalHoareTripleChecker+Invalid, 967 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 363 mSolverCounterUnsat, 34 mSDtfsCounter, 604 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 614 GetRequests, 366 SyntacticMatches, 0 SemanticMatches, 248 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 707 ImplicationChecksByTransitivity, 4.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=143occurred in iteration=7, InterpolantAutomatonStates: 186, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 294 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 6.5s InterpolantComputationTime, 599 NumberOfCodeBlocks, 597 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 800 ConstructedInterpolants, 0 QuantifiedInterpolants, 1397 SizeOfPredicates, 2 NumberOfNonLiveVariables, 1123 ConjunctsInSsa, 72 ConjunctsInUnsatCore, 18 InterpolantComputations, 2 PerfectInterpolantSequences, 5730/10188 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