/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/array-tiling/mlceu2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 07:46:39,065 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 07:46:39,120 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 07:46:39,128 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 07:46:39,128 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 07:46:39,141 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 07:46:39,141 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 07:46:39,142 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 07:46:39,142 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 07:46:39,145 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 07:46:39,145 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 07:46:39,145 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 07:46:39,146 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 07:46:39,147 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 07:46:39,147 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 07:46:39,147 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 07:46:39,147 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 07:46:39,147 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 07:46:39,147 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 07:46:39,148 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 07:46:39,148 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 07:46:39,148 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 07:46:39,148 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 07:46:39,148 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 07:46:39,148 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 07:46:39,149 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 07:46:39,149 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 07:46:39,149 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 07:46:39,149 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 07:46:39,149 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 07:46:39,150 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 07:46:39,150 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 07:46:39,150 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 07:46:39,150 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 07:46:39,150 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 07:46:39,150 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 07:46:39,151 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 07:46:39,151 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 07:46:39,151 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 07:46:39,151 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 07:46:39,151 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 07:46:39,151 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 07:46:39,151 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 07:46:39,151 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-20 07:46:39,309 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 07:46:39,335 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 07:46:39,336 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 07:46:39,337 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 07:46:39,337 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 07:46:39,338 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-tiling/mlceu2.c [2023-12-20 07:46:40,350 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 07:46:40,491 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 07:46:40,491 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-tiling/mlceu2.c [2023-12-20 07:46:40,497 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea64fb557/b16b72f79e914577ac9b5646e7160064/FLAG54df37041 [2023-12-20 07:46:40,506 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea64fb557/b16b72f79e914577ac9b5646e7160064 [2023-12-20 07:46:40,511 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 07:46:40,512 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 07:46:40,513 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 07:46:40,513 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 07:46:40,516 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 07:46:40,517 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 07:46:40" (1/1) ... [2023-12-20 07:46:40,517 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48aedf58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 07:46:40, skipping insertion in model container [2023-12-20 07:46:40,518 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 07:46:40" (1/1) ... [2023-12-20 07:46:40,530 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 07:46:40,625 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-tiling/mlceu2.c[397,410] [2023-12-20 07:46:40,635 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 07:46:40,641 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 07:46:40,649 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-tiling/mlceu2.c[397,410] [2023-12-20 07:46:40,651 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 07:46:40,660 INFO L206 MainTranslator]: Completed translation [2023-12-20 07:46:40,662 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 07:46:40 WrapperNode [2023-12-20 07:46:40,662 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 07:46:40,663 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 07:46:40,663 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 07:46:40,663 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 07:46:40,667 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 07:46:40" (1/1) ... [2023-12-20 07:46:40,671 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 07:46:40" (1/1) ... [2023-12-20 07:46:40,681 INFO L138 Inliner]: procedures = 16, calls = 12, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 53 [2023-12-20 07:46:40,681 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 07:46:40,682 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 07:46:40,682 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 07:46:40,682 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 07:46:40,688 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 07:46:40" (1/1) ... [2023-12-20 07:46:40,688 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 07:46:40" (1/1) ... [2023-12-20 07:46:40,689 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 07:46:40" (1/1) ... [2023-12-20 07:46:40,696 INFO L175 MemorySlicer]: Split 5 memory accesses to 2 slices as follows [2, 3]. 60 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2023-12-20 07:46:40,696 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 07:46:40" (1/1) ... [2023-12-20 07:46:40,696 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 07:46:40" (1/1) ... [2023-12-20 07:46:40,699 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 07:46:40" (1/1) ... [2023-12-20 07:46:40,701 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 07:46:40" (1/1) ... [2023-12-20 07:46:40,701 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 07:46:40" (1/1) ... [2023-12-20 07:46:40,702 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 07:46:40" (1/1) ... [2023-12-20 07:46:40,703 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 07:46:40,704 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 07:46:40,705 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 07:46:40,705 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 07:46:40,705 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 07:46:40" (1/1) ... [2023-12-20 07:46:40,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 07:46:40,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 07:46:40,724 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-20 07:46:40,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-20 07:46:40,745 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 07:46:40,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 07:46:40,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-20 07:46:40,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-12-20 07:46:40,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-12-20 07:46:40,745 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-20 07:46:40,745 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 07:46:40,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 07:46:40,746 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-12-20 07:46:40,746 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-12-20 07:46:40,788 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 07:46:40,789 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 07:46:40,900 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 07:46:40,922 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 07:46:40,922 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-20 07:46:40,922 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 07:46:40 BoogieIcfgContainer [2023-12-20 07:46:40,923 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 07:46:40,924 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 07:46:40,924 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 07:46:40,926 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 07:46:40,926 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 07:46:40" (1/3) ... [2023-12-20 07:46:40,927 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2127f6d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 07:46:40, skipping insertion in model container [2023-12-20 07:46:40,927 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 07:46:40" (2/3) ... [2023-12-20 07:46:40,927 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2127f6d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 07:46:40, skipping insertion in model container [2023-12-20 07:46:40,927 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 07:46:40" (3/3) ... [2023-12-20 07:46:40,928 INFO L112 eAbstractionObserver]: Analyzing ICFG mlceu2.c [2023-12-20 07:46:40,942 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 07:46:40,943 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-20 07:46:40,971 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 07:46:40,975 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;@4140ed86, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 07:46:40,975 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-20 07:46:40,979 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 13 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) [2023-12-20 07:46:40,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-20 07:46:40,983 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 07:46:40,983 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-12-20 07:46:40,984 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 07:46:40,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 07:46:40,989 INFO L85 PathProgramCache]: Analyzing trace with hash 955122675, now seen corresponding path program 1 times [2023-12-20 07:46:40,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 07:46:40,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520200599] [2023-12-20 07:46:40,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 07:46:40,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 07:46:41,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 07:46:41,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 07:46:41,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 07:46:41,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520200599] [2023-12-20 07:46:41,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520200599] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 07:46:41,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 07:46:41,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 07:46:41,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672568584] [2023-12-20 07:46:41,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 07:46:41,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-20 07:46:41,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 07:46:41,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-20 07:46:41,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 07:46:41,127 INFO L87 Difference]: Start difference. First operand has 14 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 13 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) Second operand has 2 states, 2 states have (on average 3.5) 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) [2023-12-20 07:46:41,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 07:46:41,142 INFO L93 Difference]: Finished difference Result 23 states and 31 transitions. [2023-12-20 07:46:41,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-20 07:46:41,143 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) 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 [2023-12-20 07:46:41,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 07:46:41,148 INFO L225 Difference]: With dead ends: 23 [2023-12-20 07:46:41,148 INFO L226 Difference]: Without dead ends: 11 [2023-12-20 07:46:41,149 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 07:46:41,151 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 07:46:41,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 14 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 07:46:41,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2023-12-20 07:46:41,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2023-12-20 07:46:41,168 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) [2023-12-20 07:46:41,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2023-12-20 07:46:41,169 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 7 [2023-12-20 07:46:41,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 07:46:41,170 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2023-12-20 07:46:41,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) 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) [2023-12-20 07:46:41,170 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2023-12-20 07:46:41,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-20 07:46:41,170 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 07:46:41,170 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-12-20 07:46:41,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 07:46:41,171 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 07:46:41,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 07:46:41,171 INFO L85 PathProgramCache]: Analyzing trace with hash 944963944, now seen corresponding path program 1 times [2023-12-20 07:46:41,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 07:46:41,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768574754] [2023-12-20 07:46:41,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 07:46:41,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 07:46:41,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 07:46:41,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 07:46:41,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 07:46:41,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768574754] [2023-12-20 07:46:41,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768574754] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 07:46:41,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 07:46:41,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 07:46:41,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013642824] [2023-12-20 07:46:41,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 07:46:41,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 07:46:41,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 07:46:41,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 07:46:41,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 07:46:41,279 INFO L87 Difference]: Start difference. First operand 11 states and 13 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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) [2023-12-20 07:46:41,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 07:46:41,297 INFO L93 Difference]: Finished difference Result 20 states and 24 transitions. [2023-12-20 07:46:41,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 07:46:41,298 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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 [2023-12-20 07:46:41,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 07:46:41,298 INFO L225 Difference]: With dead ends: 20 [2023-12-20 07:46:41,298 INFO L226 Difference]: Without dead ends: 14 [2023-12-20 07:46:41,299 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 07:46:41,300 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 3 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 07:46:41,301 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 10 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 07:46:41,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2023-12-20 07:46:41,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2023-12-20 07:46:41,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 07:46:41,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2023-12-20 07:46:41,308 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 7 [2023-12-20 07:46:41,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 07:46:41,308 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2023-12-20 07:46:41,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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) [2023-12-20 07:46:41,309 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2023-12-20 07:46:41,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-20 07:46:41,309 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 07:46:41,309 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 07:46:41,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 07:46:41,310 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 07:46:41,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 07:46:41,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1775280783, now seen corresponding path program 1 times [2023-12-20 07:46:41,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 07:46:41,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722252324] [2023-12-20 07:46:41,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 07:46:41,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 07:46:41,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 07:46:41,382 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 07:46:41,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 07:46:41,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722252324] [2023-12-20 07:46:41,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722252324] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 07:46:41,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2104966117] [2023-12-20 07:46:41,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 07:46:41,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 07:46:41,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 07:46:41,385 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 07:46:41,390 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-20 07:46:41,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 07:46:41,452 INFO L262 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-20 07:46:41,454 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 07:46:41,519 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 07:46:41,519 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 07:46:41,548 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 07:46:41,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2104966117] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 07:46:41,549 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 07:46:41,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-12-20 07:46:41,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753425004] [2023-12-20 07:46:41,550 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 07:46:41,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 07:46:41,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 07:46:41,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 07:46:41,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2023-12-20 07:46:41,559 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 07:46:41,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 07:46:41,605 INFO L93 Difference]: Finished difference Result 23 states and 28 transitions. [2023-12-20 07:46:41,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 07:46:41,606 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-12-20 07:46:41,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 07:46:41,607 INFO L225 Difference]: With dead ends: 23 [2023-12-20 07:46:41,607 INFO L226 Difference]: Without dead ends: 17 [2023-12-20 07:46:41,607 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2023-12-20 07:46:41,608 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 11 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 07:46:41,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 13 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 07:46:41,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2023-12-20 07:46:41,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2023-12-20 07:46:41,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 07:46:41,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions. [2023-12-20 07:46:41,610 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 18 transitions. Word has length 10 [2023-12-20 07:46:41,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 07:46:41,610 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 18 transitions. [2023-12-20 07:46:41,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 07:46:41,610 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 18 transitions. [2023-12-20 07:46:41,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-12-20 07:46:41,611 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 07:46:41,611 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 07:46:41,620 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-20 07:46:41,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 07:46:41,817 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 07:46:41,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 07:46:41,817 INFO L85 PathProgramCache]: Analyzing trace with hash 1151965384, now seen corresponding path program 2 times [2023-12-20 07:46:41,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 07:46:41,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667140428] [2023-12-20 07:46:41,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 07:46:41,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 07:46:41,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-20 07:46:41,845 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-20 07:46:41,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-20 07:46:41,880 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-12-20 07:46:41,880 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-12-20 07:46:41,881 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-20 07:46:41,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 07:46:41,886 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2023-12-20 07:46:41,888 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-20 07:46:41,908 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.12 07:46:41 BoogieIcfgContainer [2023-12-20 07:46:41,908 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-20 07:46:41,909 INFO L158 Benchmark]: Toolchain (without parser) took 1396.92ms. Allocated memory is still 255.9MB. Free memory was 211.3MB in the beginning and 206.8MB in the end (delta: 4.5MB). Peak memory consumption was 5.0MB. Max. memory is 8.0GB. [2023-12-20 07:46:41,909 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 180.4MB. Free memory is still 130.7MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-20 07:46:41,909 INFO L158 Benchmark]: CACSL2BoogieTranslator took 149.74ms. Allocated memory is still 255.9MB. Free memory was 211.3MB in the beginning and 200.3MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-20 07:46:41,909 INFO L158 Benchmark]: Boogie Procedure Inliner took 18.54ms. Allocated memory is still 255.9MB. Free memory was 200.3MB in the beginning and 198.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-20 07:46:41,909 INFO L158 Benchmark]: Boogie Preprocessor took 20.90ms. Allocated memory is still 255.9MB. Free memory was 198.8MB in the beginning and 197.1MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-20 07:46:41,910 INFO L158 Benchmark]: RCFGBuilder took 218.12ms. Allocated memory is still 255.9MB. Free memory was 196.7MB in the beginning and 185.6MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-20 07:46:41,910 INFO L158 Benchmark]: TraceAbstraction took 984.35ms. Allocated memory is still 255.9MB. Free memory was 184.7MB in the beginning and 206.8MB in the end (delta: -22.1MB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-20 07:46:41,911 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 180.4MB. Free memory is still 130.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 149.74ms. Allocated memory is still 255.9MB. Free memory was 211.3MB in the beginning and 200.3MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 18.54ms. Allocated memory is still 255.9MB. Free memory was 200.3MB in the beginning and 198.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 20.90ms. Allocated memory is still 255.9MB. Free memory was 198.8MB in the beginning and 197.1MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 218.12ms. Allocated memory is still 255.9MB. Free memory was 196.7MB in the beginning and 185.6MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 984.35ms. Allocated memory is still 255.9MB. Free memory was 184.7MB in the beginning and 206.8MB in the end (delta: -22.1MB). There was no memory consumed. 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 - UnprovableResult [Line: 8]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of bitwise operation at line 26. Possible FailurePath: [L12] int SIZE; [L14] const int MAX = 100000; [L18] SIZE = __VERIFIER_nondet_int() [L19] COND TRUE SIZE > 1 && SIZE < MAX [L21] int i; [L22] int *a = malloc(sizeof(int)*SIZE); [L24] i=0 VAL [MAX=100000, SIZE=2, a={-1:0}, i=0] [L24] COND TRUE i>16 VAL [MAX=100000, SIZE=2, a={-1:0}, i=0] [L26] COND TRUE i>>16 > 250 [L28] a[i] = 1 VAL [MAX=100000, SIZE=2] [L24] i++ VAL [MAX=100000, SIZE=2, a={-1:0}, i=1] [L24] COND TRUE i>16 VAL [MAX=100000, SIZE=2, a={-1:0}, i=1] [L26] COND TRUE i>>16 > 250 [L28] a[i] = 1 VAL [MAX=100000, SIZE=2] [L24] i++ VAL [MAX=100000, SIZE=2, a={-1:0}, i=2] [L24] COND FALSE !(i