/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/loop-acceleration/array_3-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 17:39:47,945 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 17:39:48,015 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 17:39:48,019 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 17:39:48,019 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 17:39:48,040 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 17:39:48,040 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 17:39:48,040 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 17:39:48,041 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 17:39:48,043 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 17:39:48,044 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 17:39:48,044 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 17:39:48,044 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 17:39:48,045 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 17:39:48,045 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 17:39:48,045 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 17:39:48,046 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 17:39:48,046 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 17:39:48,046 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 17:39:48,046 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 17:39:48,046 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 17:39:48,046 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 17:39:48,047 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 17:39:48,047 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 17:39:48,047 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 17:39:48,047 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 17:39:48,047 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 17:39:48,047 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 17:39:48,048 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 17:39:48,048 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 17:39:48,048 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 17:39:48,049 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 17:39:48,049 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 17:39:48,049 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 17:39:48,049 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 17:39:48,049 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 17:39:48,049 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 17:39:48,049 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 17:39:48,049 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 17:39:48,049 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 17:39:48,050 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 17:39:48,050 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 17:39:48,050 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 17:39:48,050 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 17:39:48,193 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 17:39:48,213 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 17:39:48,215 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 17:39:48,216 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 17:39:48,216 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 17:39:48,217 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/array_3-2.i [2023-12-19 17:39:49,268 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 17:39:49,440 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 17:39:49,441 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/array_3-2.i [2023-12-19 17:39:49,461 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69fe0cb17/5442f307cc6b4deda804199ff745f0cf/FLAG28d235ef4 [2023-12-19 17:39:49,473 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69fe0cb17/5442f307cc6b4deda804199ff745f0cf [2023-12-19 17:39:49,475 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 17:39:49,476 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 17:39:49,478 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 17:39:49,478 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 17:39:49,482 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 17:39:49,482 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 05:39:49" (1/1) ... [2023-12-19 17:39:49,483 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e42a185 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:39:49, skipping insertion in model container [2023-12-19 17:39:49,483 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 05:39:49" (1/1) ... [2023-12-19 17:39:49,502 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 17:39:49,593 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_3-2.i[809,822] [2023-12-19 17:39:49,601 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 17:39:49,607 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 17:39:49,614 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_3-2.i[809,822] [2023-12-19 17:39:49,617 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 17:39:49,626 INFO L206 MainTranslator]: Completed translation [2023-12-19 17:39:49,627 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:39:49 WrapperNode [2023-12-19 17:39:49,627 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 17:39:49,628 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 17:39:49,628 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 17:39:49,628 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 17:39:49,632 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:39:49" (1/1) ... [2023-12-19 17:39:49,639 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:39:49" (1/1) ... [2023-12-19 17:39:49,650 INFO L138 Inliner]: procedures = 16, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 47 [2023-12-19 17:39:49,650 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 17:39:49,651 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 17:39:49,651 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 17:39:49,651 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 17:39:49,657 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:39:49" (1/1) ... [2023-12-19 17:39:49,657 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:39:49" (1/1) ... [2023-12-19 17:39:49,658 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:39:49" (1/1) ... [2023-12-19 17:39:49,666 INFO L175 MemorySlicer]: Split 4 memory accesses to 2 slices as follows [2, 2]. 50 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2023-12-19 17:39:49,666 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:39:49" (1/1) ... [2023-12-19 17:39:49,666 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:39:49" (1/1) ... [2023-12-19 17:39:49,669 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:39:49" (1/1) ... [2023-12-19 17:39:49,671 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:39:49" (1/1) ... [2023-12-19 17:39:49,671 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:39:49" (1/1) ... [2023-12-19 17:39:49,672 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:39:49" (1/1) ... [2023-12-19 17:39:49,673 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 17:39:49,674 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 17:39:49,674 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 17:39:49,674 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 17:39:49,674 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:39:49" (1/1) ... [2023-12-19 17:39:49,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 17:39:49,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:39:49,699 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) [2023-12-19 17:39:49,745 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 [2023-12-19 17:39:49,751 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 17:39:49,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 17:39:49,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-19 17:39:49,752 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-19 17:39:49,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-12-19 17:39:49,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-12-19 17:39:49,754 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 17:39:49,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 17:39:49,754 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-12-19 17:39:49,754 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-12-19 17:39:49,755 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-19 17:39:49,815 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 17:39:49,816 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 17:39:49,904 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 17:39:49,927 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 17:39:49,927 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-19 17:39:49,927 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 05:39:49 BoogieIcfgContainer [2023-12-19 17:39:49,927 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 17:39:49,929 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 17:39:49,929 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 17:39:49,931 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 17:39:49,931 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 05:39:49" (1/3) ... [2023-12-19 17:39:49,932 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cf20b28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 05:39:49, skipping insertion in model container [2023-12-19 17:39:49,932 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:39:49" (2/3) ... [2023-12-19 17:39:49,932 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cf20b28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 05:39:49, skipping insertion in model container [2023-12-19 17:39:49,932 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 05:39:49" (3/3) ... [2023-12-19 17:39:49,933 INFO L112 eAbstractionObserver]: Analyzing ICFG array_3-2.i [2023-12-19 17:39:49,945 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 17:39:49,945 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 17:39:49,974 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 17:39:49,979 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;@62d4f0a9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 17:39:49,979 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 17:39:49,981 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.7) internal successors, (17), 11 states have internal predecessors, (17), 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) [2023-12-19 17:39:49,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-19 17:39:49,985 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:39:49,986 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:39:49,986 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:39:49,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:39:49,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1780754240, now seen corresponding path program 1 times [2023-12-19 17:39:49,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:39:49,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717086629] [2023-12-19 17:39:49,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:39:49,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:39:50,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:39:50,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:39:50,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:39:50,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717086629] [2023-12-19 17:39:50,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717086629] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 17:39:50,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 17:39:50,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 17:39:50,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414071054] [2023-12-19 17:39:50,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 17:39:50,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 17:39:50,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:39:50,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 17:39:50,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 17:39:50,130 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.7) internal successors, (17), 11 states have internal predecessors, (17), 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) [2023-12-19 17:39:50,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:39:50,170 INFO L93 Difference]: Finished difference Result 31 states and 45 transitions. [2023-12-19 17:39:50,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 17:39:50,172 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 [2023-12-19 17:39:50,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:39:50,179 INFO L225 Difference]: With dead ends: 31 [2023-12-19 17:39:50,179 INFO L226 Difference]: Without dead ends: 18 [2023-12-19 17:39:50,181 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 [2023-12-19 17:39:50,183 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 8 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 17:39:50,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 12 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 17:39:50,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2023-12-19 17:39:50,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 11. [2023-12-19 17:39:50,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 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) [2023-12-19 17:39:50,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2023-12-19 17:39:50,206 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 7 [2023-12-19 17:39:50,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:39:50,206 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2023-12-19 17:39:50,207 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) [2023-12-19 17:39:50,207 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2023-12-19 17:39:50,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-19 17:39:50,207 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:39:50,207 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:39:50,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-19 17:39:50,207 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:39:50,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:39:50,208 INFO L85 PathProgramCache]: Analyzing trace with hash -153121515, now seen corresponding path program 1 times [2023-12-19 17:39:50,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:39:50,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31696169] [2023-12-19 17:39:50,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:39:50,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:39:50,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:39:50,262 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:39:50,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:39:50,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31696169] [2023-12-19 17:39:50,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31696169] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:39:50,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [967742781] [2023-12-19 17:39:50,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:39:50,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:39:50,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:39:50,265 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) [2023-12-19 17:39:50,271 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-19 17:39:50,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:39:50,312 INFO L262 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 17:39:50,314 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:39:50,351 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:39:50,352 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:39:50,367 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:39:50,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [967742781] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:39:50,368 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:39:50,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-12-19 17:39:50,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008327464] [2023-12-19 17:39:50,368 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:39:50,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 17:39:50,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:39:50,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 17:39:50,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-12-19 17:39:50,370 INFO L87 Difference]: Start difference. First operand 11 states and 13 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 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) [2023-12-19 17:39:50,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:39:50,413 INFO L93 Difference]: Finished difference Result 50 states and 60 transitions. [2023-12-19 17:39:50,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 17:39:50,413 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 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) Word has length 10 [2023-12-19 17:39:50,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:39:50,414 INFO L225 Difference]: With dead ends: 50 [2023-12-19 17:39:50,414 INFO L226 Difference]: Without dead ends: 42 [2023-12-19 17:39:50,414 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-12-19 17:39:50,415 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 56 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 17:39:50,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 22 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 17:39:50,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2023-12-19 17:39:50,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 14. [2023-12-19 17:39:50,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 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) [2023-12-19 17:39:50,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2023-12-19 17:39:50,419 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 10 [2023-12-19 17:39:50,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:39:50,419 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2023-12-19 17:39:50,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 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) [2023-12-19 17:39:50,419 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2023-12-19 17:39:50,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-12-19 17:39:50,420 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:39:50,420 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:39:50,427 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-19 17:39:50,625 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 [2023-12-19 17:39:50,625 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:39:50,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:39:50,627 INFO L85 PathProgramCache]: Analyzing trace with hash 2134471177, now seen corresponding path program 2 times [2023-12-19 17:39:50,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:39:50,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188009614] [2023-12-19 17:39:50,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:39:50,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:39:50,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:39:50,748 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-19 17:39:50,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:39:50,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188009614] [2023-12-19 17:39:50,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188009614] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 17:39:50,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 17:39:50,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 17:39:50,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48349516] [2023-12-19 17:39:50,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 17:39:50,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 17:39:50,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:39:50,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 17:39:50,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 17:39:50,750 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:39:50,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:39:50,781 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2023-12-19 17:39:50,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 17:39:50,782 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-12-19 17:39:50,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:39:50,782 INFO L225 Difference]: With dead ends: 21 [2023-12-19 17:39:50,782 INFO L226 Difference]: Without dead ends: 17 [2023-12-19 17:39:50,783 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 [2023-12-19 17:39:50,786 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 2 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 17:39:50,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 15 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 17:39:50,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2023-12-19 17:39:50,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2023-12-19 17:39:50,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 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) [2023-12-19 17:39:50,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2023-12-19 17:39:50,790 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 13 [2023-12-19 17:39:50,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:39:50,790 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2023-12-19 17:39:50,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 17:39:50,790 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2023-12-19 17:39:50,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-19 17:39:50,791 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:39:50,791 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:39:50,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-19 17:39:50,791 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:39:50,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:39:50,792 INFO L85 PathProgramCache]: Analyzing trace with hash 2137530085, now seen corresponding path program 1 times [2023-12-19 17:39:50,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:39:50,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139040310] [2023-12-19 17:39:50,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:39:50,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:39:50,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:39:50,913 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-19 17:39:50,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:39:50,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139040310] [2023-12-19 17:39:50,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139040310] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:39:50,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [767285500] [2023-12-19 17:39:50,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:39:50,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:39:50,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:39:50,915 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) [2023-12-19 17:39:50,920 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-19 17:39:50,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:39:50,980 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 17:39:50,982 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:39:51,029 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-19 17:39:51,030 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:39:51,100 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-19 17:39:51,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [767285500] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:39:51,103 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:39:51,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 14 [2023-12-19 17:39:51,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959370992] [2023-12-19 17:39:51,104 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:39:51,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-19 17:39:51,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:39:51,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-19 17:39:51,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2023-12-19 17:39:51,110 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. Second operand has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 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) [2023-12-19 17:39:51,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:39:51,243 INFO L93 Difference]: Finished difference Result 89 states and 113 transitions. [2023-12-19 17:39:51,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-19 17:39:51,243 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-12-19 17:39:51,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:39:51,244 INFO L225 Difference]: With dead ends: 89 [2023-12-19 17:39:51,244 INFO L226 Difference]: Without dead ends: 70 [2023-12-19 17:39:51,245 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=128, Invalid=178, Unknown=0, NotChecked=0, Total=306 [2023-12-19 17:39:51,245 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 86 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 17:39:51,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 45 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 17:39:51,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2023-12-19 17:39:51,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 35. [2023-12-19 17:39:51,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.2352941176470589) internal successors, (42), 34 states have internal predecessors, (42), 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) [2023-12-19 17:39:51,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 42 transitions. [2023-12-19 17:39:51,252 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 42 transitions. Word has length 16 [2023-12-19 17:39:51,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:39:51,252 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 42 transitions. [2023-12-19 17:39:51,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 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) [2023-12-19 17:39:51,252 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 42 transitions. [2023-12-19 17:39:51,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-19 17:39:51,253 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:39:51,253 INFO L195 NwaCegarLoop]: trace histogram [10, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:39:51,271 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-19 17:39:51,476 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 [2023-12-19 17:39:51,477 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:39:51,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:39:51,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1035822437, now seen corresponding path program 2 times [2023-12-19 17:39:51,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:39:51,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632179626] [2023-12-19 17:39:51,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:39:51,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:39:51,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:39:51,701 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-12-19 17:39:51,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:39:51,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632179626] [2023-12-19 17:39:51,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632179626] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:39:51,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2037215158] [2023-12-19 17:39:51,703 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-19 17:39:51,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:39:51,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:39:51,705 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) [2023-12-19 17:39:51,745 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-19 17:39:51,839 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-19 17:39:51,839 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 17:39:51,840 INFO L262 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-19 17:39:51,842 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:39:51,877 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-12-19 17:39:51,878 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:39:52,043 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-12-19 17:39:52,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2037215158] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:39:52,044 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:39:52,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2023-12-19 17:39:52,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143855442] [2023-12-19 17:39:52,044 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:39:52,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-19 17:39:52,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:39:52,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-19 17:39:52,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2023-12-19 17:39:52,046 INFO L87 Difference]: Start difference. First operand 35 states and 42 transitions. Second operand has 25 states, 25 states have (on average 1.36) internal successors, (34), 24 states have internal predecessors, (34), 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) [2023-12-19 17:39:52,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:39:52,195 INFO L93 Difference]: Finished difference Result 189 states and 231 transitions. [2023-12-19 17:39:52,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-19 17:39:52,195 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.36) internal successors, (34), 24 states have internal predecessors, (34), 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 34 [2023-12-19 17:39:52,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:39:52,199 INFO L225 Difference]: With dead ends: 189 [2023-12-19 17:39:52,199 INFO L226 Difference]: Without dead ends: 166 [2023-12-19 17:39:52,201 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2023-12-19 17:39:52,202 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 337 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 17:39:52,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [337 Valid, 91 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 17:39:52,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2023-12-19 17:39:52,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 47. [2023-12-19 17:39:52,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.173913043478261) internal successors, (54), 46 states have internal predecessors, (54), 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) [2023-12-19 17:39:52,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 54 transitions. [2023-12-19 17:39:52,216 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 54 transitions. Word has length 34 [2023-12-19 17:39:52,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:39:52,216 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 54 transitions. [2023-12-19 17:39:52,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.36) internal successors, (34), 24 states have internal predecessors, (34), 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) [2023-12-19 17:39:52,216 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 54 transitions. [2023-12-19 17:39:52,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-12-19 17:39:52,217 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:39:52,217 INFO L195 NwaCegarLoop]: trace histogram [22, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:39:52,225 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-19 17:39:52,423 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 [2023-12-19 17:39:52,423 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:39:52,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:39:52,424 INFO L85 PathProgramCache]: Analyzing trace with hash -502096795, now seen corresponding path program 3 times [2023-12-19 17:39:52,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:39:52,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257459520] [2023-12-19 17:39:52,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:39:52,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:39:52,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:39:52,842 INFO L134 CoverageAnalysis]: Checked inductivity of 298 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-12-19 17:39:52,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:39:52,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257459520] [2023-12-19 17:39:52,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257459520] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:39:52,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1197755828] [2023-12-19 17:39:52,842 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-19 17:39:52,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:39:52,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:39:52,843 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) [2023-12-19 17:39:52,871 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-19 17:39:52,953 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-12-19 17:39:52,953 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 17:39:52,954 INFO L262 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-19 17:39:52,956 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:39:53,015 INFO L134 CoverageAnalysis]: Checked inductivity of 298 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2023-12-19 17:39:53,015 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:39:53,157 INFO L134 CoverageAnalysis]: Checked inductivity of 298 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2023-12-19 17:39:53,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1197755828] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:39:53,157 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:39:53,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 9, 9] total 34 [2023-12-19 17:39:53,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142783958] [2023-12-19 17:39:53,158 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:39:53,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-19 17:39:53,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:39:53,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-19 17:39:53,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=501, Invalid=621, Unknown=0, NotChecked=0, Total=1122 [2023-12-19 17:39:53,159 INFO L87 Difference]: Start difference. First operand 47 states and 54 transitions. Second operand has 34 states, 34 states have (on average 2.264705882352941) internal successors, (77), 34 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) [2023-12-19 17:39:53,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:39:53,704 INFO L93 Difference]: Finished difference Result 197 states and 265 transitions. [2023-12-19 17:39:53,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2023-12-19 17:39:53,705 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.264705882352941) internal successors, (77), 34 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 46 [2023-12-19 17:39:53,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:39:53,706 INFO L225 Difference]: With dead ends: 197 [2023-12-19 17:39:53,706 INFO L226 Difference]: Without dead ends: 126 [2023-12-19 17:39:53,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 418 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1173, Invalid=2133, Unknown=0, NotChecked=0, Total=3306 [2023-12-19 17:39:53,707 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 368 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 17:39:53,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [368 Valid, 68 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 17:39:53,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2023-12-19 17:39:53,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2023-12-19 17:39:53,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 125 states have (on average 1.256) internal successors, (157), 125 states have internal predecessors, (157), 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) [2023-12-19 17:39:53,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 157 transitions. [2023-12-19 17:39:53,714 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 157 transitions. Word has length 46 [2023-12-19 17:39:53,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:39:53,714 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 157 transitions. [2023-12-19 17:39:53,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.264705882352941) internal successors, (77), 34 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) [2023-12-19 17:39:53,714 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 157 transitions. [2023-12-19 17:39:53,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-12-19 17:39:53,717 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:39:53,717 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 29, 29, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:39:53,726 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-19 17:39:53,922 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 [2023-12-19 17:39:53,922 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:39:53,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:39:53,923 INFO L85 PathProgramCache]: Analyzing trace with hash -1375942567, now seen corresponding path program 4 times [2023-12-19 17:39:53,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:39:53,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930290658] [2023-12-19 17:39:53,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:39:53,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:39:53,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:39:54,712 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 1305 trivial. 0 not checked. [2023-12-19 17:39:54,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:39:54,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930290658] [2023-12-19 17:39:54,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930290658] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:39:54,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [367543727] [2023-12-19 17:39:54,713 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-19 17:39:54,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:39:54,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:39:54,714 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) [2023-12-19 17:39:54,762 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-19 17:39:54,863 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-19 17:39:54,863 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 17:39:54,865 INFO L262 TraceCheckSpWp]: Trace formula consists of 540 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-19 17:39:54,868 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:39:54,941 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 1305 trivial. 0 not checked. [2023-12-19 17:39:54,941 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:39:55,892 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 1305 trivial. 0 not checked. [2023-12-19 17:39:55,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [367543727] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:39:55,893 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:39:55,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 62 [2023-12-19 17:39:55,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672210558] [2023-12-19 17:39:55,893 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:39:55,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2023-12-19 17:39:55,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:39:55,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2023-12-19 17:39:55,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1953, Invalid=1953, Unknown=0, NotChecked=0, Total=3906 [2023-12-19 17:39:55,901 INFO L87 Difference]: Start difference. First operand 126 states and 157 transitions. Second operand has 63 states, 63 states have (on average 1.1428571428571428) internal successors, (72), 62 states have internal predecessors, (72), 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) [2023-12-19 17:39:56,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:39:56,407 INFO L93 Difference]: Finished difference Result 469 states and 592 transitions. [2023-12-19 17:39:56,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2023-12-19 17:39:56,408 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 1.1428571428571428) internal successors, (72), 62 states have internal predecessors, (72), 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 125 [2023-12-19 17:39:56,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:39:56,409 INFO L225 Difference]: With dead ends: 469 [2023-12-19 17:39:56,409 INFO L226 Difference]: Without dead ends: 374 [2023-12-19 17:39:56,410 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1953, Invalid=1953, Unknown=0, NotChecked=0, Total=3906 [2023-12-19 17:39:56,410 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 1292 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 265 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1292 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 265 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 17:39:56,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1292 Valid, 171 Invalid, 550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [265 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 17:39:56,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2023-12-19 17:39:56,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 157. [2023-12-19 17:39:56,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 156 states have (on average 1.205128205128205) internal successors, (188), 156 states have internal predecessors, (188), 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) [2023-12-19 17:39:56,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 188 transitions. [2023-12-19 17:39:56,419 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 188 transitions. Word has length 125 [2023-12-19 17:39:56,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:39:56,419 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 188 transitions. [2023-12-19 17:39:56,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 1.1428571428571428) internal successors, (72), 62 states have internal predecessors, (72), 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) [2023-12-19 17:39:56,419 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 188 transitions. [2023-12-19 17:39:56,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-12-19 17:39:56,420 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:39:56,420 INFO L195 NwaCegarLoop]: trace histogram [60, 30, 30, 29, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:39:56,435 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-19 17:39:56,625 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 [2023-12-19 17:39:56,626 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:39:56,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:39:56,626 INFO L85 PathProgramCache]: Analyzing trace with hash -2050682395, now seen corresponding path program 5 times [2023-12-19 17:39:56,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:39:56,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695038493] [2023-12-19 17:39:56,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:39:56,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:39:56,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:39:58,988 INFO L134 CoverageAnalysis]: Checked inductivity of 3135 backedges. 0 proven. 1830 refuted. 0 times theorem prover too weak. 1305 trivial. 0 not checked. [2023-12-19 17:39:58,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:39:58,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695038493] [2023-12-19 17:39:58,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695038493] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:39:58,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1229440938] [2023-12-19 17:39:58,989 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-19 17:39:58,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:39:58,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:39:58,990 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) [2023-12-19 17:39:59,004 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-19 17:40:56,339 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2023-12-19 17:40:56,339 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 17:40:56,367 INFO L262 TraceCheckSpWp]: Trace formula consists of 819 conjuncts, 62 conjunts are in the unsatisfiable core [2023-12-19 17:40:56,371 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:40:56,470 INFO L134 CoverageAnalysis]: Checked inductivity of 3135 backedges. 0 proven. 1830 refuted. 0 times theorem prover too weak. 1305 trivial. 0 not checked. [2023-12-19 17:40:56,470 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:40:59,314 INFO L134 CoverageAnalysis]: Checked inductivity of 3135 backedges. 0 proven. 1830 refuted. 0 times theorem prover too weak. 1305 trivial. 0 not checked. [2023-12-19 17:40:59,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1229440938] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:40:59,314 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:40:59,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62, 62] total 124 [2023-12-19 17:40:59,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321220212] [2023-12-19 17:40:59,315 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:40:59,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 125 states [2023-12-19 17:40:59,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:40:59,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 125 interpolants. [2023-12-19 17:40:59,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7750, Invalid=7750, Unknown=0, NotChecked=0, Total=15500 [2023-12-19 17:40:59,325 INFO L87 Difference]: Start difference. First operand 157 states and 188 transitions. Second operand has 125 states, 125 states have (on average 1.072) internal successors, (134), 124 states have internal predecessors, (134), 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) [2023-12-19 17:41:03,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:41:03,209 INFO L93 Difference]: Finished difference Result 965 states and 1181 transitions. [2023-12-19 17:41:03,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2023-12-19 17:41:03,210 INFO L78 Accepts]: Start accepts. Automaton has has 125 states, 125 states have (on average 1.072) internal successors, (134), 124 states have internal predecessors, (134), 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 156 [2023-12-19 17:41:03,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:41:03,213 INFO L225 Difference]: With dead ends: 965 [2023-12-19 17:41:03,213 INFO L226 Difference]: Without dead ends: 870 [2023-12-19 17:41:03,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=7750, Invalid=7750, Unknown=0, NotChecked=0, Total=15500 [2023-12-19 17:41:03,217 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 2891 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 596 mSolverCounterSat, 498 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2891 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 1094 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 498 IncrementalHoareTripleChecker+Valid, 596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 17:41:03,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2891 Valid, 419 Invalid, 1094 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [498 Valid, 596 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 17:41:03,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 870 states. [2023-12-19 17:41:03,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 870 to 219. [2023-12-19 17:41:03,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 218 states have (on average 1.146788990825688) internal successors, (250), 218 states have internal predecessors, (250), 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) [2023-12-19 17:41:03,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 250 transitions. [2023-12-19 17:41:03,235 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 250 transitions. Word has length 156 [2023-12-19 17:41:03,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:41:03,235 INFO L495 AbstractCegarLoop]: Abstraction has 219 states and 250 transitions. [2023-12-19 17:41:03,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 125 states, 125 states have (on average 1.072) internal successors, (134), 124 states have internal predecessors, (134), 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) [2023-12-19 17:41:03,235 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 250 transitions. [2023-12-19 17:41:03,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2023-12-19 17:41:03,238 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:41:03,238 INFO L195 NwaCegarLoop]: trace histogram [122, 30, 30, 29, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:41:03,267 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-19 17:41:03,454 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 [2023-12-19 17:41:03,454 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:41:03,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:41:03,455 INFO L85 PathProgramCache]: Analyzing trace with hash -91131035, now seen corresponding path program 6 times [2023-12-19 17:41:03,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:41:03,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182924776] [2023-12-19 17:41:03,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:41:03,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:41:03,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:41:10,346 INFO L134 CoverageAnalysis]: Checked inductivity of 8808 backedges. 0 proven. 7503 refuted. 0 times theorem prover too weak. 1305 trivial. 0 not checked. [2023-12-19 17:41:10,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:41:10,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182924776] [2023-12-19 17:41:10,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182924776] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:41:10,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [28971814] [2023-12-19 17:41:10,346 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-19 17:41:10,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:41:10,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:41:10,347 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 17:41:10,349 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process Received shutdown request... [2023-12-19 17:54:32,369 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 [2023-12-19 17:54:32,372 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-19 17:54:33,390 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 [2023-12-19 17:54:33,574 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forcibly destroying the process [2023-12-19 17:54:33,609 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 17:54:33,610 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-19 17:54:33,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [124] total 124 [2023-12-19 17:54:33,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721127955] [2023-12-19 17:54:33,610 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-19 17:54:33,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 125 states [2023-12-19 17:54:33,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:54:33,614 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 137 [2023-12-19 17:54:33,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 125 interpolants. [2023-12-19 17:54:33,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7750, Invalid=7750, Unknown=0, NotChecked=0, Total=15500 [2023-12-19 17:54:33,619 INFO L87 Difference]: Start difference. First operand 219 states and 250 transitions. Second operand has 125 states, 125 states have (on average 1.056) internal successors, (132), 124 states have internal predecessors, (132), 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) [2023-12-19 17:54:33,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 17:54:33,622 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=7750, Invalid=7750, Unknown=0, NotChecked=0, Total=15500 [2023-12-19 17:54:33,622 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 [2023-12-19 17:54:33,622 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] [2023-12-19 17:54:33,623 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-19 17:54:33,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-19 17:54:33,624 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (219states) and FLOYD_HOARE automaton (currently 2 states, 125 states before enhancement),while ReachableStatesComputation was computing reachable states (1 states constructed, input type IntersectNwa). [2023-12-19 17:54:33,627 INFO L445 BasicCegarLoop]: Path program histogram: [6, 2, 1] [2023-12-19 17:54:33,628 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-19 17:54:33,629 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.12 05:54:33 BoogieIcfgContainer [2023-12-19 17:54:33,629 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-19 17:54:33,630 INFO L158 Benchmark]: Toolchain (without parser) took 884153.94ms. Allocated memory was 262.1MB in the beginning and 642.8MB in the end (delta: 380.6MB). Free memory was 218.7MB in the beginning and 346.6MB in the end (delta: -127.9MB). Peak memory consumption was 253.5MB. Max. memory is 8.0GB. [2023-12-19 17:54:33,630 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 215.0MB. Free memory is still 164.6MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-19 17:54:33,630 INFO L158 Benchmark]: CACSL2BoogieTranslator took 149.09ms. Allocated memory is still 262.1MB. Free memory was 218.7MB in the beginning and 207.9MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-19 17:54:33,630 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.50ms. Allocated memory is still 262.1MB. Free memory was 207.9MB in the beginning and 206.5MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-19 17:54:33,630 INFO L158 Benchmark]: Boogie Preprocessor took 22.48ms. Allocated memory is still 262.1MB. Free memory was 206.5MB in the beginning and 204.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-19 17:54:33,630 INFO L158 Benchmark]: RCFGBuilder took 253.91ms. Allocated memory is still 262.1MB. Free memory was 204.4MB in the beginning and 193.6MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-19 17:54:33,631 INFO L158 Benchmark]: TraceAbstraction took 883700.70ms. Allocated memory was 262.1MB in the beginning and 642.8MB in the end (delta: 380.6MB). Free memory was 192.9MB in the beginning and 346.6MB in the end (delta: -153.7MB). Peak memory consumption was 227.3MB. Max. memory is 8.0GB. [2023-12-19 17:54:33,631 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 215.0MB. Free memory is still 164.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 149.09ms. Allocated memory is still 262.1MB. Free memory was 218.7MB in the beginning and 207.9MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 22.50ms. Allocated memory is still 262.1MB. Free memory was 207.9MB in the beginning and 206.5MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 22.48ms. Allocated memory is still 262.1MB. Free memory was 206.5MB in the beginning and 204.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 253.91ms. Allocated memory is still 262.1MB. Free memory was 204.4MB in the beginning and 193.6MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 883700.70ms. Allocated memory was 262.1MB in the beginning and 642.8MB in the end (delta: 380.6MB). Free memory was 192.9MB in the beginning and 346.6MB in the end (delta: -153.7MB). Peak memory consumption was 227.3MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 15]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 15). Cancelled while NwaCegarLoop was constructing difference of abstraction (219states) and FLOYD_HOARE automaton (currently 2 states, 125 states before enhancement),while ReachableStatesComputation was computing reachable states (1 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 883.7s, OverallIterations: 9, TraceHistogramMax: 122, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 5.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5040 SdHoareTripleChecker+Valid, 1.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5040 mSDsluCounter, 843 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 794 mSDsCounter, 940 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1283 IncrementalHoareTripleChecker+Invalid, 2223 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 940 mSolverCounterUnsat, 49 mSDtfsCounter, 1283 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1058 GetRequests, 647 SyntacticMatches, 0 SemanticMatches, 411 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 844 ImplicationChecksByTransitivity, 10.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=219occurred in iteration=8, InterpolantAutomatonStates: 294, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 1057 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 57.7s SatisfiabilityAnalysisTime, 15.2s InterpolantComputationTime, 1012 NumberOfCodeBlocks, 1000 NumberOfCodeBlocksAsserted, 52 NumberOfCheckSat, 1378 ConstructedInterpolants, 0 QuantifiedInterpolants, 2425 SizeOfPredicates, 2 NumberOfNonLiveVariables, 1860 ConjunctsInSsa, 126 ConjunctsInUnsatCore, 21 InterpolantComputations, 2 PerfectInterpolantSequences, 9847/24679 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 !ENTRY org.eclipse.osgi 4 0 2023-12-19 17:54:33.642 !MESSAGE Application error !STACK 1 org.eclipse.core.internal.resources.ResourceException(/)[568]: java.io.FileNotFoundException: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69fe0cb17/.metadata/.plugins/org.eclipse.core.resources/.root/1.tree (No such file or directory) at java.base/java.io.FileOutputStream.open0(Native Method) at java.base/java.io.FileOutputStream.open(FileOutputStream.java:298) at java.base/java.io.FileOutputStream.(FileOutputStream.java:237) at java.base/java.io.FileOutputStream.(FileOutputStream.java:187) at org.eclipse.core.internal.localstore.SafeFileOutputStream.(SafeFileOutputStream.java:55) at org.eclipse.core.internal.resources.SaveManager.saveTree(SaveManager.java:1381) at org.eclipse.core.internal.resources.SaveManager.save(SaveManager.java:1168) at org.eclipse.core.internal.resources.Workspace.save(Workspace.java:2333) at org.eclipse.core.internal.resources.Workspace.save(Workspace.java:2322) at de.uni_freiburg.informatik.ultimate.core.coreplugin.UltimateCore.start(UltimateCore.java:190) at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:203) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:401) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:255) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:566) at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:657) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:594) at org.eclipse.equinox.launcher.Main.run(Main.java:1465) at org.eclipse.equinox.launcher.Main.main(Main.java:1438) Completed graceful shutdown