/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/forester-heap/dll-simple-white-blue-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 21:50:38,329 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 21:50:38,402 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 21:50:38,406 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 21:50:38,406 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 21:50:38,427 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 21:50:38,428 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 21:50:38,428 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 21:50:38,428 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 21:50:38,431 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 21:50:38,431 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 21:50:38,432 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 21:50:38,432 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 21:50:38,433 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 21:50:38,433 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 21:50:38,433 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 21:50:38,434 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 21:50:38,434 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 21:50:38,434 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 21:50:38,434 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 21:50:38,434 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 21:50:38,434 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 21:50:38,435 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 21:50:38,435 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 21:50:38,435 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 21:50:38,435 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 21:50:38,435 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 21:50:38,435 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 21:50:38,436 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 21:50:38,436 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 21:50:38,437 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 21:50:38,437 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 21:50:38,437 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 21:50:38,437 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 21:50:38,437 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 21:50:38,437 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 21:50:38,437 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 21:50:38,437 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 21:50:38,438 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 21:50:38,438 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 21:50:38,438 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 21:50:38,438 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 21:50:38,438 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 21:50:38,438 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 21:50:38,611 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 21:50:38,631 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 21:50:38,632 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 21:50:38,633 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 21:50:38,634 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 21:50:38,635 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-simple-white-blue-2.i [2023-12-15 21:50:39,673 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 21:50:39,873 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 21:50:39,873 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-simple-white-blue-2.i [2023-12-15 21:50:39,888 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e20992b1/bb9ecc73738a42cfa493dd0f34bee4e9/FLAG236885b28 [2023-12-15 21:50:39,898 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e20992b1/bb9ecc73738a42cfa493dd0f34bee4e9 [2023-12-15 21:50:39,900 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 21:50:39,901 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 21:50:39,902 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 21:50:39,902 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 21:50:39,907 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 21:50:39,907 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 09:50:39" (1/1) ... [2023-12-15 21:50:39,908 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3478b7ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:50:39, skipping insertion in model container [2023-12-15 21:50:39,908 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 09:50:39" (1/1) ... [2023-12-15 21:50:39,949 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 21:50:40,159 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-simple-white-blue-2.i[22778,22791] [2023-12-15 21:50:40,165 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 21:50:40,171 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 21:50:40,198 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-simple-white-blue-2.i[22778,22791] [2023-12-15 21:50:40,200 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 21:50:40,217 INFO L206 MainTranslator]: Completed translation [2023-12-15 21:50:40,218 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:50:40 WrapperNode [2023-12-15 21:50:40,218 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 21:50:40,219 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 21:50:40,219 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 21:50:40,219 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 21:50:40,224 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:50:40" (1/1) ... [2023-12-15 21:50:40,231 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:50:40" (1/1) ... [2023-12-15 21:50:40,247 INFO L138 Inliner]: procedures = 119, calls = 38, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 121 [2023-12-15 21:50:40,247 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 21:50:40,248 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 21:50:40,248 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 21:50:40,248 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 21:50:40,255 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:50:40" (1/1) ... [2023-12-15 21:50:40,255 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:50:40" (1/1) ... [2023-12-15 21:50:40,258 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:50:40" (1/1) ... [2023-12-15 21:50:40,269 INFO L175 MemorySlicer]: Split 29 memory accesses to 2 slices as follows [2, 27]. 93 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 15 writes are split as follows [0, 15]. [2023-12-15 21:50:40,269 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:50:40" (1/1) ... [2023-12-15 21:50:40,269 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:50:40" (1/1) ... [2023-12-15 21:50:40,281 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:50:40" (1/1) ... [2023-12-15 21:50:40,284 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:50:40" (1/1) ... [2023-12-15 21:50:40,285 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:50:40" (1/1) ... [2023-12-15 21:50:40,286 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:50:40" (1/1) ... [2023-12-15 21:50:40,288 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 21:50:40,288 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 21:50:40,289 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 21:50:40,289 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 21:50:40,289 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:50:40" (1/1) ... [2023-12-15 21:50:40,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 21:50:40,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:50:40,360 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-15 21:50:40,399 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-15 21:50:40,404 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-12-15 21:50:40,404 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-12-15 21:50:40,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-12-15 21:50:40,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-12-15 21:50:40,405 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-15 21:50:40,405 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 21:50:40,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-12-15 21:50:40,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-12-15 21:50:40,407 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-12-15 21:50:40,407 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-12-15 21:50:40,407 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-15 21:50:40,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 21:50:40,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-15 21:50:40,407 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 21:50:40,407 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 21:50:40,514 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 21:50:40,516 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 21:50:40,689 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 21:50:40,715 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 21:50:40,715 INFO L309 CfgBuilder]: Removed 8 assume(true) statements. [2023-12-15 21:50:40,717 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 09:50:40 BoogieIcfgContainer [2023-12-15 21:50:40,717 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 21:50:40,732 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 21:50:40,733 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 21:50:40,735 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 21:50:40,736 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 09:50:39" (1/3) ... [2023-12-15 21:50:40,736 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55927f5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 09:50:40, skipping insertion in model container [2023-12-15 21:50:40,737 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:50:40" (2/3) ... [2023-12-15 21:50:40,737 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55927f5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 09:50:40, skipping insertion in model container [2023-12-15 21:50:40,737 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 09:50:40" (3/3) ... [2023-12-15 21:50:40,738 INFO L112 eAbstractionObserver]: Analyzing ICFG dll-simple-white-blue-2.i [2023-12-15 21:50:40,751 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 21:50:40,751 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 21:50:40,780 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 21:50:40,784 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;@1cd37feb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 21:50:40,785 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 21:50:40,787 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 23 states have (on average 1.7826086956521738) internal successors, (41), 24 states have internal predecessors, (41), 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) [2023-12-15 21:50:40,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-15 21:50:40,791 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:50:40,791 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:50:40,792 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:50:40,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:50:40,796 INFO L85 PathProgramCache]: Analyzing trace with hash 17193270, now seen corresponding path program 1 times [2023-12-15 21:50:40,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:50:40,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394217160] [2023-12-15 21:50:40,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:50:40,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:50:40,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:50:40,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 21:50:40,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:50:40,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394217160] [2023-12-15 21:50:40,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394217160] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:50:40,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:50:40,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 21:50:40,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161944952] [2023-12-15 21:50:40,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:50:40,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 21:50:40,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:50:40,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 21:50:40,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 21:50:40,957 INFO L87 Difference]: Start difference. First operand has 25 states, 23 states have (on average 1.7826086956521738) internal successors, (41), 24 states have internal predecessors, (41), 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 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 21:50:40,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:50:40,974 INFO L93 Difference]: Finished difference Result 46 states and 75 transitions. [2023-12-15 21:50:40,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 21:50:40,976 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-12-15 21:50:40,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:50:40,980 INFO L225 Difference]: With dead ends: 46 [2023-12-15 21:50:40,981 INFO L226 Difference]: Without dead ends: 20 [2023-12-15 21:50:40,982 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 [2023-12-15 21:50:40,985 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:50:40,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 29 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:50:40,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2023-12-15 21:50:41,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2023-12-15 21:50:41,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.368421052631579) internal successors, (26), 19 states have internal predecessors, (26), 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) [2023-12-15 21:50:41,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 26 transitions. [2023-12-15 21:50:41,008 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 26 transitions. Word has length 10 [2023-12-15 21:50:41,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:50:41,009 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 26 transitions. [2023-12-15 21:50:41,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 21:50:41,009 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 26 transitions. [2023-12-15 21:50:41,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-12-15 21:50:41,009 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:50:41,010 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:50:41,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-15 21:50:41,010 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:50:41,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:50:41,010 INFO L85 PathProgramCache]: Analyzing trace with hash -1733592953, now seen corresponding path program 1 times [2023-12-15 21:50:41,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:50:41,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123957788] [2023-12-15 21:50:41,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:50:41,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:50:41,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:50:41,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 21:50:41,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:50:41,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123957788] [2023-12-15 21:50:41,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123957788] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:50:41,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:50:41,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 21:50:41,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117812833] [2023-12-15 21:50:41,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:50:41,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 21:50:41,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:50:41,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 21:50:41,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 21:50:41,544 INFO L87 Difference]: Start difference. First operand 20 states and 26 transitions. Second operand has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 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) [2023-12-15 21:50:41,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:50:41,745 INFO L93 Difference]: Finished difference Result 52 states and 67 transitions. [2023-12-15 21:50:41,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 21:50:41,745 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-12-15 21:50:41,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:50:41,747 INFO L225 Difference]: With dead ends: 52 [2023-12-15 21:50:41,747 INFO L226 Difference]: Without dead ends: 50 [2023-12-15 21:50:41,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-12-15 21:50:41,750 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 46 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 21:50:41,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 74 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 21:50:41,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2023-12-15 21:50:41,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 30. [2023-12-15 21:50:41,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.3448275862068966) internal successors, (39), 29 states have internal predecessors, (39), 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) [2023-12-15 21:50:41,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 39 transitions. [2023-12-15 21:50:41,761 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 39 transitions. Word has length 12 [2023-12-15 21:50:41,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:50:41,762 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 39 transitions. [2023-12-15 21:50:41,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 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) [2023-12-15 21:50:41,762 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 39 transitions. [2023-12-15 21:50:41,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-12-15 21:50:41,763 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:50:41,763 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:50:41,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-15 21:50:41,763 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:50:41,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:50:41,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1967611468, now seen corresponding path program 1 times [2023-12-15 21:50:41,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:50:41,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287048124] [2023-12-15 21:50:41,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:50:41,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:50:41,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:50:42,096 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 21:50:42,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:50:42,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287048124] [2023-12-15 21:50:42,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287048124] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 21:50:42,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2093946499] [2023-12-15 21:50:42,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:50:42,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:50:42,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:50:42,100 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:50:42,128 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 21:50:42,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:50:42,178 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-15 21:50:42,182 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:50:42,219 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 7 [2023-12-15 21:50:42,262 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 21:50:42,262 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:50:42,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2093946499] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:50:42,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 21:50:42,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2023-12-15 21:50:42,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099010513] [2023-12-15 21:50:42,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:50:42,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 21:50:42,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:50:42,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 21:50:42,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-12-15 21:50:42,264 INFO L87 Difference]: Start difference. First operand 30 states and 39 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 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) [2023-12-15 21:50:42,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:50:42,324 INFO L93 Difference]: Finished difference Result 47 states and 58 transitions. [2023-12-15 21:50:42,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 21:50:42,324 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-12-15 21:50:42,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:50:42,325 INFO L225 Difference]: With dead ends: 47 [2023-12-15 21:50:42,325 INFO L226 Difference]: Without dead ends: 39 [2023-12-15 21:50:42,325 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-12-15 21:50:42,326 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 11 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:50:42,326 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 68 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:50:42,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2023-12-15 21:50:42,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 33. [2023-12-15 21:50:42,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.28125) internal successors, (41), 32 states have internal predecessors, (41), 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) [2023-12-15 21:50:42,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 41 transitions. [2023-12-15 21:50:42,330 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 41 transitions. Word has length 14 [2023-12-15 21:50:42,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:50:42,330 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 41 transitions. [2023-12-15 21:50:42,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 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) [2023-12-15 21:50:42,330 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 41 transitions. [2023-12-15 21:50:42,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-12-15 21:50:42,330 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:50:42,331 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:50:42,336 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-15 21:50:42,536 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 [2023-12-15 21:50:42,536 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:50:42,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:50:42,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1349624834, now seen corresponding path program 1 times [2023-12-15 21:50:42,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:50:42,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355185041] [2023-12-15 21:50:42,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:50:42,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:50:42,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:50:43,037 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 21:50:43,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:50:43,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355185041] [2023-12-15 21:50:43,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355185041] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 21:50:43,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1752481243] [2023-12-15 21:50:43,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:50:43,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:50:43,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:50:43,039 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:50:43,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 21:50:43,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:50:43,126 INFO L262 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 50 conjunts are in the unsatisfiable core [2023-12-15 21:50:43,129 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:50:43,145 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-15 21:50:43,149 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-15 21:50:43,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-15 21:50:43,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-15 21:50:43,226 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-12-15 21:50:43,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-15 21:50:43,233 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 18 [2023-12-15 21:50:43,237 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 12 [2023-12-15 21:50:43,243 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 11 [2023-12-15 21:50:43,291 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 7 [2023-12-15 21:50:43,298 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 7 [2023-12-15 21:50:43,311 INFO L349 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2023-12-15 21:50:43,311 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2023-12-15 21:50:43,317 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2023-12-15 21:50:43,396 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 18 [2023-12-15 21:50:43,400 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-12-15 21:50:43,422 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 21:50:43,422 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:50:43,464 WARN L854 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~head~0#1.base_17| Int) (v_ArrVal_267 (Array Int Int))) (or (not (= (select (select (store |c_#memory_int#1| |v_ULTIMATE.start_main_~head~0#1.base_17| v_ArrVal_267) |c_ULTIMATE.start_main_~head~0#1.base|) (+ |c_ULTIMATE.start_main_~head~0#1.offset| 8)) 1)) (not (= (select |c_#valid| |v_ULTIMATE.start_main_~head~0#1.base_17|) 0)))) is different from false [2023-12-15 21:50:43,748 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2023-12-15 21:50:43,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1752481243] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:50:43,748 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 21:50:43,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2023-12-15 21:50:43,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170397923] [2023-12-15 21:50:43,749 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 21:50:43,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-15 21:50:43,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:50:43,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-15 21:50:43,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=225, Unknown=1, NotChecked=30, Total=306 [2023-12-15 21:50:43,751 INFO L87 Difference]: Start difference. First operand 33 states and 41 transitions. Second operand has 18 states, 18 states have (on average 2.111111111111111) internal successors, (38), 17 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 21:50:44,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:50:44,348 INFO L93 Difference]: Finished difference Result 64 states and 82 transitions. [2023-12-15 21:50:44,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-15 21:50:44,349 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.111111111111111) internal successors, (38), 17 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-12-15 21:50:44,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:50:44,349 INFO L225 Difference]: With dead ends: 64 [2023-12-15 21:50:44,350 INFO L226 Difference]: Without dead ends: 62 [2023-12-15 21:50:44,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=126, Invalid=477, Unknown=1, NotChecked=46, Total=650 [2023-12-15 21:50:44,350 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 107 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 56 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 21:50:44,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 197 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 220 Invalid, 0 Unknown, 56 Unchecked, 0.3s Time] [2023-12-15 21:50:44,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2023-12-15 21:50:44,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 26. [2023-12-15 21:50:44,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.28) internal successors, (32), 25 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) [2023-12-15 21:50:44,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2023-12-15 21:50:44,370 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 14 [2023-12-15 21:50:44,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:50:44,370 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2023-12-15 21:50:44,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.111111111111111) internal successors, (38), 17 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 21:50:44,370 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2023-12-15 21:50:44,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-15 21:50:44,371 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:50:44,371 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:50:44,386 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-15 21:50:44,575 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 [2023-12-15 21:50:44,576 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:50:44,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:50:44,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1532136939, now seen corresponding path program 1 times [2023-12-15 21:50:44,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:50:44,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905781964] [2023-12-15 21:50:44,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:50:44,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:50:44,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:50:44,753 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 21:50:44,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:50:44,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905781964] [2023-12-15 21:50:44,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905781964] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 21:50:44,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1257164245] [2023-12-15 21:50:44,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:50:44,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:50:44,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:50:44,755 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:50:44,781 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-15 21:50:44,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:50:44,836 INFO L262 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 42 conjunts are in the unsatisfiable core [2023-12-15 21:50:44,839 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:50:44,851 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 7 [2023-12-15 21:50:44,855 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 7 [2023-12-15 21:50:44,865 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-15 21:50:44,905 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 17 [2023-12-15 21:50:44,915 INFO L349 Elim1Store]: treesize reduction 21, result has 44.7 percent of original size [2023-12-15 21:50:44,915 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 23 [2023-12-15 21:50:44,925 INFO L349 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2023-12-15 21:50:44,925 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2023-12-15 21:50:44,930 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2023-12-15 21:50:44,933 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 15 [2023-12-15 21:50:45,062 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 21:50:45,063 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:50:45,125 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:50:45,125 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 40 [2023-12-15 21:50:45,131 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:50:45,131 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 34 [2023-12-15 21:50:45,140 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2023-12-15 21:50:45,148 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-15 21:50:45,238 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 21:50:45,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1257164245] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:50:45,239 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 21:50:45,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2023-12-15 21:50:45,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454905491] [2023-12-15 21:50:45,239 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 21:50:45,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-15 21:50:45,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:50:45,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-15 21:50:45,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-12-15 21:50:45,240 INFO L87 Difference]: Start difference. First operand 26 states and 32 transitions. Second operand has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 11 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) [2023-12-15 21:50:45,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:50:45,587 INFO L93 Difference]: Finished difference Result 76 states and 95 transitions. [2023-12-15 21:50:45,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 21:50:45,588 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 11 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 15 [2023-12-15 21:50:45,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:50:45,588 INFO L225 Difference]: With dead ends: 76 [2023-12-15 21:50:45,588 INFO L226 Difference]: Without dead ends: 61 [2023-12-15 21:50:45,589 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2023-12-15 21:50:45,589 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 139 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 21:50:45,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 181 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 21:50:45,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2023-12-15 21:50:45,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 42. [2023-12-15 21:50:45,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.3170731707317074) internal successors, (54), 41 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) [2023-12-15 21:50:45,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 54 transitions. [2023-12-15 21:50:45,594 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 54 transitions. Word has length 15 [2023-12-15 21:50:45,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:50:45,594 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 54 transitions. [2023-12-15 21:50:45,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 11 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) [2023-12-15 21:50:45,594 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 54 transitions. [2023-12-15 21:50:45,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-15 21:50:45,594 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:50:45,594 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:50:45,601 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-15 21:50:45,799 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 [2023-12-15 21:50:45,799 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:50:45,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:50:45,800 INFO L85 PathProgramCache]: Analyzing trace with hash -361887496, now seen corresponding path program 1 times [2023-12-15 21:50:45,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:50:45,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294780944] [2023-12-15 21:50:45,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:50:45,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:50:45,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:50:45,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 21:50:45,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:50:45,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294780944] [2023-12-15 21:50:45,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294780944] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:50:45,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:50:45,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 21:50:45,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165684447] [2023-12-15 21:50:45,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:50:45,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 21:50:45,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:50:45,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 21:50:45,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:50:45,962 INFO L87 Difference]: Start difference. First operand 42 states and 54 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 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) [2023-12-15 21:50:46,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:50:46,102 INFO L93 Difference]: Finished difference Result 62 states and 78 transitions. [2023-12-15 21:50:46,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 21:50:46,103 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 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) Word has length 17 [2023-12-15 21:50:46,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:50:46,103 INFO L225 Difference]: With dead ends: 62 [2023-12-15 21:50:46,103 INFO L226 Difference]: Without dead ends: 52 [2023-12-15 21:50:46,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-15 21:50:46,104 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 22 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 21:50:46,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 62 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 21:50:46,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2023-12-15 21:50:46,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 44. [2023-12-15 21:50:46,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.302325581395349) internal successors, (56), 43 states have internal predecessors, (56), 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) [2023-12-15 21:50:46,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 56 transitions. [2023-12-15 21:50:46,108 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 56 transitions. Word has length 17 [2023-12-15 21:50:46,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:50:46,108 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 56 transitions. [2023-12-15 21:50:46,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 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) [2023-12-15 21:50:46,109 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 56 transitions. [2023-12-15 21:50:46,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-15 21:50:46,109 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:50:46,109 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:50:46,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-15 21:50:46,109 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:50:46,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:50:46,110 INFO L85 PathProgramCache]: Analyzing trace with hash 318170874, now seen corresponding path program 1 times [2023-12-15 21:50:46,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:50:46,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823244045] [2023-12-15 21:50:46,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:50:46,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:50:46,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:50:46,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 21:50:46,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:50:46,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823244045] [2023-12-15 21:50:46,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823244045] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:50:46,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:50:46,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 21:50:46,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745343065] [2023-12-15 21:50:46,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:50:46,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 21:50:46,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:50:46,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 21:50:46,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-15 21:50:46,221 INFO L87 Difference]: Start difference. First operand 44 states and 56 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 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) [2023-12-15 21:50:46,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:50:46,318 INFO L93 Difference]: Finished difference Result 70 states and 87 transitions. [2023-12-15 21:50:46,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 21:50:46,319 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 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) Word has length 17 [2023-12-15 21:50:46,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:50:46,319 INFO L225 Difference]: With dead ends: 70 [2023-12-15 21:50:46,319 INFO L226 Difference]: Without dead ends: 63 [2023-12-15 21:50:46,319 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-15 21:50:46,320 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 53 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 21:50:46,320 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 87 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 21:50:46,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2023-12-15 21:50:46,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 44. [2023-12-15 21:50:46,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.302325581395349) internal successors, (56), 43 states have internal predecessors, (56), 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) [2023-12-15 21:50:46,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 56 transitions. [2023-12-15 21:50:46,324 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 56 transitions. Word has length 17 [2023-12-15 21:50:46,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:50:46,324 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 56 transitions. [2023-12-15 21:50:46,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 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) [2023-12-15 21:50:46,324 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 56 transitions. [2023-12-15 21:50:46,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-15 21:50:46,325 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:50:46,325 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:50:46,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-15 21:50:46,325 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:50:46,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:50:46,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1502637200, now seen corresponding path program 1 times [2023-12-15 21:50:46,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:50:46,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615209685] [2023-12-15 21:50:46,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:50:46,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:50:46,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:50:46,738 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 21:50:46,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:50:46,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615209685] [2023-12-15 21:50:46,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615209685] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 21:50:46,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [504785480] [2023-12-15 21:50:46,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:50:46,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:50:46,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:50:46,740 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:50:46,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-15 21:50:46,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:50:46,837 INFO L262 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 71 conjunts are in the unsatisfiable core [2023-12-15 21:50:46,840 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:50:46,846 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-15 21:50:46,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-15 21:50:46,867 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 137 treesize of output 136 [2023-12-15 21:50:46,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-15 21:50:46,871 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 54 [2023-12-15 21:50:46,878 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-12-15 21:50:46,878 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 82 treesize of output 71 [2023-12-15 21:50:46,886 INFO L349 Elim1Store]: treesize reduction 21, result has 38.2 percent of original size [2023-12-15 21:50:46,887 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 19 [2023-12-15 21:50:46,899 INFO L349 Elim1Store]: treesize reduction 26, result has 35.0 percent of original size [2023-12-15 21:50:46,900 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 29 [2023-12-15 21:50:46,905 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 11 [2023-12-15 21:50:46,959 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 17 [2023-12-15 21:50:46,968 INFO L349 Elim1Store]: treesize reduction 25, result has 40.5 percent of original size [2023-12-15 21:50:46,968 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 34 [2023-12-15 21:50:46,970 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 15 [2023-12-15 21:50:46,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-15 21:50:46,979 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 36 [2023-12-15 21:50:46,989 INFO L349 Elim1Store]: treesize reduction 29, result has 46.3 percent of original size [2023-12-15 21:50:46,989 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 31 [2023-12-15 21:50:46,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-15 21:50:46,999 INFO L349 Elim1Store]: treesize reduction 4, result has 75.0 percent of original size [2023-12-15 21:50:46,999 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 22 [2023-12-15 21:50:47,297 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-12-15 21:50:47,298 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 33 [2023-12-15 21:50:47,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-15 21:50:47,301 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2023-12-15 21:50:47,341 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 21:50:47,341 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:50:47,507 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:50:47,508 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 46 [2023-12-15 21:50:47,515 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:50:47,515 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 40 [2023-12-15 21:50:47,692 INFO L349 Elim1Store]: treesize reduction 15, result has 70.0 percent of original size [2023-12-15 21:50:47,692 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 466 treesize of output 482 [2023-12-15 21:50:47,773 INFO L349 Elim1Store]: treesize reduction 14, result has 70.8 percent of original size [2023-12-15 21:50:47,773 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 566 treesize of output 545 [2023-12-15 21:50:47,861 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:50:47,862 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 11928 treesize of output 11653 [2023-12-15 21:50:47,929 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:50:47,930 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 1341 treesize of output 962 [2023-12-15 21:50:48,064 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:50:48,064 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 5428 treesize of output 5339 [2023-12-15 21:50:48,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-15 21:50:48,603 INFO L349 Elim1Store]: treesize reduction 423, result has 24.1 percent of original size [2023-12-15 21:50:48,604 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 26 case distinctions, treesize of input 10140 treesize of output 10042 [2023-12-15 21:50:48,918 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3614 treesize of output 3484 [2023-12-15 21:50:49,041 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3460 treesize of output 3384 [2023-12-15 21:50:49,160 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:50:49,160 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 3420 treesize of output 3172 [2023-12-15 21:50:49,409 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:50:49,410 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 3149 treesize of output 3009 [2023-12-15 21:50:49,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-15 21:50:49,857 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:50:49,858 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 7 new quantified variables, introduced 27 case distinctions, treesize of input 3328 treesize of output 3464 [2023-12-15 21:50:50,304 INFO L349 Elim1Store]: treesize reduction 8, result has 95.9 percent of original size [2023-12-15 21:50:50,305 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 3305 treesize of output 3119 Received shutdown request... [2023-12-15 21:51:50,998 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 21:51:50,998 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 21:51:50,998 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 21:51:51,005 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-15 21:51:51,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:51:51,199 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 18 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-4-1 term,while PolyPacSimplificationTermWalker was simplifying 4 xjuncts wrt. a ∧-51-4-4-9-4-6-4-6-5-4-4-4-4-3-3-2-3-2-1 context. [2023-12-15 21:51:51,202 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:51:51,204 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 21:51:51,205 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 09:51:51 BoogieIcfgContainer [2023-12-15 21:51:51,205 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 21:51:51,206 INFO L158 Benchmark]: Toolchain (without parser) took 71305.07ms. Allocated memory was 308.3MB in the beginning and 1.4GB in the end (delta: 1.1GB). Free memory was 255.3MB in the beginning and 955.5MB in the end (delta: -700.1MB). Peak memory consumption was 832.0MB. Max. memory is 8.0GB. [2023-12-15 21:51:51,206 INFO L158 Benchmark]: CDTParser took 0.73ms. Allocated memory is still 197.1MB. Free memory is still 148.1MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 21:51:51,206 INFO L158 Benchmark]: CACSL2BoogieTranslator took 316.66ms. Allocated memory is still 308.3MB. Free memory was 254.8MB in the beginning and 237.0MB in the end (delta: 17.8MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. [2023-12-15 21:51:51,206 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.86ms. Allocated memory is still 308.3MB. Free memory was 237.0MB in the beginning and 234.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-15 21:51:51,206 INFO L158 Benchmark]: Boogie Preprocessor took 40.02ms. Allocated memory is still 308.3MB. Free memory was 234.9MB in the beginning and 231.7MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-15 21:51:51,207 INFO L158 Benchmark]: RCFGBuilder took 428.31ms. Allocated memory is still 308.3MB. Free memory was 231.7MB in the beginning and 213.4MB in the end (delta: 18.3MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. [2023-12-15 21:51:51,207 INFO L158 Benchmark]: TraceAbstraction took 70472.94ms. Allocated memory was 308.3MB in the beginning and 1.4GB in the end (delta: 1.1GB). Free memory was 212.9MB in the beginning and 955.5MB in the end (delta: -742.6MB). Peak memory consumption was 789.0MB. Max. memory is 8.0GB. [2023-12-15 21:51:51,208 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.73ms. Allocated memory is still 197.1MB. Free memory is still 148.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 316.66ms. Allocated memory is still 308.3MB. Free memory was 254.8MB in the beginning and 237.0MB in the end (delta: 17.8MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 28.86ms. Allocated memory is still 308.3MB. Free memory was 237.0MB in the beginning and 234.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 40.02ms. Allocated memory is still 308.3MB. Free memory was 234.9MB in the beginning and 231.7MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 428.31ms. Allocated memory is still 308.3MB. Free memory was 231.7MB in the beginning and 213.4MB in the end (delta: 18.3MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. * TraceAbstraction took 70472.94ms. Allocated memory was 308.3MB in the beginning and 1.4GB in the end (delta: 1.1GB). Free memory was 212.9MB in the beginning and 955.5MB in the end (delta: -742.6MB). Peak memory consumption was 789.0MB. 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: 1062]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 1062). Cancelled while NwaCegarLoop was analyzing trace of length 18 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-4-1 term,while PolyPacSimplificationTermWalker was simplifying 4 xjuncts wrt. a ∧-51-4-4-9-4-6-4-6-5-4-4-4-4-3-3-2-3-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 70.4s, OverallIterations: 8, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 378 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 378 mSDsluCounter, 698 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 56 IncrementalHoareTripleChecker+Unchecked, 542 mSDsCounter, 56 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 681 IncrementalHoareTripleChecker+Invalid, 793 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 56 mSolverCounterUnsat, 156 mSDtfsCounter, 681 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 126 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred in iteration=6, InterpolantAutomatonStates: 52, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 108 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.8s InterpolantComputationTime, 142 NumberOfCodeBlocks, 142 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 159 ConstructedInterpolants, 13 QuantifiedInterpolants, 2807 SizeOfPredicates, 25 NumberOfNonLiveVariables, 470 ConjunctsInSsa, 113 ConjunctsInUnsatCore, 12 InterpolantComputations, 5 PerfectInterpolantSequences, 5/16 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown