/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/array-examples/standard_copy4_ground-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-18 16:33:17,603 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-18 16:33:17,684 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-18 16:33:17,688 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-18 16:33:17,688 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-18 16:33:17,725 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-18 16:33:17,726 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-18 16:33:17,726 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-18 16:33:17,727 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-18 16:33:17,727 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-18 16:33:17,727 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-18 16:33:17,728 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-18 16:33:17,728 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-18 16:33:17,729 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-18 16:33:17,729 INFO L153 SettingsManager]: * Use SBE=true [2023-12-18 16:33:17,729 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-18 16:33:17,730 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-18 16:33:17,730 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-18 16:33:17,730 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-18 16:33:17,731 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-18 16:33:17,731 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-18 16:33:17,732 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-18 16:33:17,732 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-18 16:33:17,732 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-18 16:33:17,733 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-18 16:33:17,733 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-18 16:33:17,733 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-18 16:33:17,733 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-18 16:33:17,734 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-18 16:33:17,734 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-18 16:33:17,735 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-18 16:33:17,735 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-18 16:33:17,736 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-18 16:33:17,736 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-18 16:33:17,736 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-18 16:33:17,736 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-18 16:33:17,736 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-18 16:33:17,736 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-18 16:33:17,737 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-18 16:33:17,737 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-18 16:33:17,737 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-18 16:33:17,737 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-18 16:33:17,738 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-18 16:33:17,738 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-18 16:33:17,950 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-18 16:33:17,972 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-18 16:33:17,974 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-18 16:33:17,974 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-18 16:33:17,975 INFO L274 PluginConnector]: CDTParser initialized [2023-12-18 16:33:17,976 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_copy4_ground-1.i [2023-12-18 16:33:19,185 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-18 16:33:19,360 INFO L384 CDTParser]: Found 1 translation units. [2023-12-18 16:33:19,360 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_copy4_ground-1.i [2023-12-18 16:33:19,366 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93b8ca33c/7513e98840364c98b1671e6d83177b8d/FLAGaef3727f3 [2023-12-18 16:33:19,376 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93b8ca33c/7513e98840364c98b1671e6d83177b8d [2023-12-18 16:33:19,378 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-18 16:33:19,379 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-18 16:33:19,380 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-18 16:33:19,380 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-18 16:33:19,389 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-18 16:33:19,390 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 04:33:19" (1/1) ... [2023-12-18 16:33:19,391 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@544285d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 04:33:19, skipping insertion in model container [2023-12-18 16:33:19,391 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 04:33:19" (1/1) ... [2023-12-18 16:33:19,412 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-18 16:33:19,521 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_copy4_ground-1.i[816,829] [2023-12-18 16:33:19,535 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-18 16:33:19,542 INFO L202 MainTranslator]: Completed pre-run [2023-12-18 16:33:19,551 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_copy4_ground-1.i[816,829] [2023-12-18 16:33:19,558 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-18 16:33:19,569 INFO L206 MainTranslator]: Completed translation [2023-12-18 16:33:19,570 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 04:33:19 WrapperNode [2023-12-18 16:33:19,570 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-18 16:33:19,571 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-18 16:33:19,571 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-18 16:33:19,571 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-18 16:33:19,580 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 04:33:19" (1/1) ... [2023-12-18 16:33:19,592 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 04:33:19" (1/1) ... [2023-12-18 16:33:19,607 INFO L138 Inliner]: procedures = 16, calls = 33, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 112 [2023-12-18 16:33:19,607 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-18 16:33:19,608 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-18 16:33:19,608 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-18 16:33:19,608 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-18 16:33:19,615 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 04:33:19" (1/1) ... [2023-12-18 16:33:19,615 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 04:33:19" (1/1) ... [2023-12-18 16:33:19,617 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 04:33:19" (1/1) ... [2023-12-18 16:33:19,639 INFO L175 MemorySlicer]: Split 13 memory accesses to 6 slices as follows [2, 3, 2, 2, 2, 2]. 23 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0, 0]. The 5 writes are split as follows [0, 1, 1, 1, 1, 1]. [2023-12-18 16:33:19,640 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 04:33:19" (1/1) ... [2023-12-18 16:33:19,640 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 04:33:19" (1/1) ... [2023-12-18 16:33:19,645 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 04:33:19" (1/1) ... [2023-12-18 16:33:19,647 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 04:33:19" (1/1) ... [2023-12-18 16:33:19,648 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 04:33:19" (1/1) ... [2023-12-18 16:33:19,649 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 04:33:19" (1/1) ... [2023-12-18 16:33:19,652 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-18 16:33:19,666 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-18 16:33:19,666 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-18 16:33:19,666 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-18 16:33:19,667 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 04:33:19" (1/1) ... [2023-12-18 16:33:19,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-18 16:33:19,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 16:33:19,694 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) [2023-12-18 16:33:19,711 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 [2023-12-18 16:33:19,728 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-18 16:33:19,728 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-18 16:33:19,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-18 16:33:19,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-12-18 16:33:19,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-12-18 16:33:19,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-12-18 16:33:19,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-12-18 16:33:19,731 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-18 16:33:19,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-12-18 16:33:19,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-12-18 16:33:19,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-12-18 16:33:19,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-12-18 16:33:19,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-12-18 16:33:19,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-12-18 16:33:19,732 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-18 16:33:19,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-18 16:33:19,732 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-12-18 16:33:19,732 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-12-18 16:33:19,732 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-12-18 16:33:19,732 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-12-18 16:33:19,733 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-12-18 16:33:19,733 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-12-18 16:33:19,733 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-18 16:33:19,837 INFO L241 CfgBuilder]: Building ICFG [2023-12-18 16:33:19,840 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-18 16:33:19,986 INFO L282 CfgBuilder]: Performing block encoding [2023-12-18 16:33:20,018 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-18 16:33:20,018 INFO L309 CfgBuilder]: Removed 6 assume(true) statements. [2023-12-18 16:33:20,019 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 04:33:20 BoogieIcfgContainer [2023-12-18 16:33:20,019 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-18 16:33:20,021 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-18 16:33:20,021 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-18 16:33:20,024 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-18 16:33:20,024 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 04:33:19" (1/3) ... [2023-12-18 16:33:20,025 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d9b4bc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 04:33:20, skipping insertion in model container [2023-12-18 16:33:20,025 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 04:33:19" (2/3) ... [2023-12-18 16:33:20,025 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d9b4bc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 04:33:20, skipping insertion in model container [2023-12-18 16:33:20,025 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 04:33:20" (3/3) ... [2023-12-18 16:33:20,026 INFO L112 eAbstractionObserver]: Analyzing ICFG standard_copy4_ground-1.i [2023-12-18 16:33:20,040 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-18 16:33:20,041 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-18 16:33:20,081 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-18 16:33:20,086 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;@66795481, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-18 16:33:20,087 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-18 16:33:20,090 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 16 states have (on average 1.875) internal successors, (30), 17 states have internal predecessors, (30), 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) [2023-12-18 16:33:20,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-12-18 16:33:20,094 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 16:33:20,095 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 16:33:20,095 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 16:33:20,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 16:33:20,099 INFO L85 PathProgramCache]: Analyzing trace with hash 597340837, now seen corresponding path program 1 times [2023-12-18 16:33:20,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 16:33:20,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051426997] [2023-12-18 16:33:20,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 16:33:20,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 16:33:20,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 16:33:20,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 16:33:20,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 16:33:20,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051426997] [2023-12-18 16:33:20,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051426997] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 16:33:20,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 16:33:20,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-18 16:33:20,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522535275] [2023-12-18 16:33:20,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 16:33:20,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 16:33:20,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 16:33:20,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 16:33:20,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 16:33:20,421 INFO L87 Difference]: Start difference. First operand has 18 states, 16 states have (on average 1.875) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 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) [2023-12-18 16:33:20,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 16:33:20,474 INFO L93 Difference]: Finished difference Result 35 states and 59 transitions. [2023-12-18 16:33:20,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 16:33:20,477 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 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 [2023-12-18 16:33:20,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 16:33:20,482 INFO L225 Difference]: With dead ends: 35 [2023-12-18 16:33:20,482 INFO L226 Difference]: Without dead ends: 17 [2023-12-18 16:33:20,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 16:33:20,488 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 16:33:20,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 29 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 16:33:20,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2023-12-18 16:33:20,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2023-12-18 16:33:20,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.375) internal successors, (22), 16 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 16:33:20,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 22 transitions. [2023-12-18 16:33:20,518 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 22 transitions. Word has length 14 [2023-12-18 16:33:20,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 16:33:20,518 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 22 transitions. [2023-12-18 16:33:20,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 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) [2023-12-18 16:33:20,519 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 22 transitions. [2023-12-18 16:33:20,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-18 16:33:20,519 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 16:33:20,520 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 16:33:20,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-18 16:33:20,520 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 16:33:20,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 16:33:20,521 INFO L85 PathProgramCache]: Analyzing trace with hash -502109116, now seen corresponding path program 1 times [2023-12-18 16:33:20,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 16:33:20,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042849294] [2023-12-18 16:33:20,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 16:33:20,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 16:33:20,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 16:33:20,624 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 16:33:20,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 16:33:20,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042849294] [2023-12-18 16:33:20,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042849294] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 16:33:20,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1109845164] [2023-12-18 16:33:20,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 16:33:20,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 16:33:20,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 16:33:20,632 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) [2023-12-18 16:33:20,640 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-18 16:33:20,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 16:33:20,717 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-18 16:33:20,721 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 16:33:20,735 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-18 16:33:20,735 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-18 16:33:20,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1109845164] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 16:33:20,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-18 16:33:20,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-12-18 16:33:20,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182531423] [2023-12-18 16:33:20,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 16:33:20,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 16:33:20,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 16:33:20,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 16:33:20,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-18 16:33:20,738 INFO L87 Difference]: Start difference. First operand 17 states and 22 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 16:33:20,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 16:33:20,766 INFO L93 Difference]: Finished difference Result 33 states and 45 transitions. [2023-12-18 16:33:20,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 16:33:20,767 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-12-18 16:33:20,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 16:33:20,767 INFO L225 Difference]: With dead ends: 33 [2023-12-18 16:33:20,767 INFO L226 Difference]: Without dead ends: 21 [2023-12-18 16:33:20,768 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-18 16:33:20,769 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 16:33:20,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 20 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 16:33:20,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2023-12-18 16:33:20,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2023-12-18 16:33:20,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.3) internal successors, (26), 20 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) [2023-12-18 16:33:20,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 26 transitions. [2023-12-18 16:33:20,774 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 26 transitions. Word has length 15 [2023-12-18 16:33:20,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 16:33:20,774 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 26 transitions. [2023-12-18 16:33:20,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 16:33:20,775 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 26 transitions. [2023-12-18 16:33:20,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-18 16:33:20,776 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 16:33:20,776 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 16:33:20,788 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-18 16:33:20,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 16:33:20,989 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 16:33:20,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 16:33:20,990 INFO L85 PathProgramCache]: Analyzing trace with hash -489823800, now seen corresponding path program 1 times [2023-12-18 16:33:20,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 16:33:20,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381693692] [2023-12-18 16:33:20,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 16:33:20,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 16:33:21,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 16:33:21,109 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-18 16:33:21,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 16:33:21,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381693692] [2023-12-18 16:33:21,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381693692] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 16:33:21,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1562285768] [2023-12-18 16:33:21,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 16:33:21,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 16:33:21,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 16:33:21,112 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 16:33:21,130 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-18 16:33:21,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 16:33:21,228 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-18 16:33:21,230 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 16:33:21,262 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-18 16:33:21,262 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 16:33:21,319 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-18 16:33:21,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1562285768] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 16:33:21,320 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 16:33:21,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-12-18 16:33:21,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238189591] [2023-12-18 16:33:21,321 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 16:33:21,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 16:33:21,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 16:33:21,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 16:33:21,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-12-18 16:33:21,325 INFO L87 Difference]: Start difference. First operand 21 states and 26 transitions. Second operand has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 6 states have internal predecessors, (24), 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) [2023-12-18 16:33:21,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 16:33:21,372 INFO L93 Difference]: Finished difference Result 42 states and 54 transitions. [2023-12-18 16:33:21,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-18 16:33:21,372 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 6 states have internal predecessors, (24), 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 19 [2023-12-18 16:33:21,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 16:33:21,373 INFO L225 Difference]: With dead ends: 42 [2023-12-18 16:33:21,373 INFO L226 Difference]: Without dead ends: 24 [2023-12-18 16:33:21,373 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-12-18 16:33:21,374 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 16:33:21,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 53 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 16:33:21,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-12-18 16:33:21,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2023-12-18 16:33:21,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 23 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 16:33:21,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 29 transitions. [2023-12-18 16:33:21,378 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 29 transitions. Word has length 19 [2023-12-18 16:33:21,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 16:33:21,379 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 29 transitions. [2023-12-18 16:33:21,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 6 states have internal predecessors, (24), 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) [2023-12-18 16:33:21,379 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 29 transitions. [2023-12-18 16:33:21,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-18 16:33:21,379 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 16:33:21,380 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 16:33:21,388 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-18 16:33:21,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-12-18 16:33:21,587 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 16:33:21,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 16:33:21,587 INFO L85 PathProgramCache]: Analyzing trace with hash -141746327, now seen corresponding path program 2 times [2023-12-18 16:33:21,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 16:33:21,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360141491] [2023-12-18 16:33:21,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 16:33:21,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 16:33:21,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 16:33:21,702 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-18 16:33:21,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 16:33:21,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360141491] [2023-12-18 16:33:21,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360141491] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 16:33:21,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2011695085] [2023-12-18 16:33:21,707 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-18 16:33:21,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 16:33:21,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 16:33:21,709 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) [2023-12-18 16:33:21,715 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-18 16:33:21,807 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-18 16:33:21,807 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 16:33:21,808 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-18 16:33:21,809 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 16:33:21,830 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-18 16:33:21,830 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 16:33:21,850 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-18 16:33:21,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2011695085] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 16:33:21,850 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 16:33:21,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-12-18 16:33:21,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998674943] [2023-12-18 16:33:21,851 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 16:33:21,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 16:33:21,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 16:33:21,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 16:33:21,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-12-18 16:33:21,854 INFO L87 Difference]: Start difference. First operand 24 states and 29 transitions. Second operand has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 16:33:21,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 16:33:21,932 INFO L93 Difference]: Finished difference Result 51 states and 71 transitions. [2023-12-18 16:33:21,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-18 16:33:21,933 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2023-12-18 16:33:21,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 16:33:21,934 INFO L225 Difference]: With dead ends: 51 [2023-12-18 16:33:21,934 INFO L226 Difference]: Without dead ends: 36 [2023-12-18 16:33:21,935 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-12-18 16:33:21,936 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-18 16:33:21,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 26 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-18 16:33:21,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2023-12-18 16:33:21,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2023-12-18 16:33:21,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.1714285714285715) internal successors, (41), 35 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) [2023-12-18 16:33:21,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2023-12-18 16:33:21,954 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 22 [2023-12-18 16:33:21,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 16:33:21,954 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2023-12-18 16:33:21,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 16:33:21,954 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2023-12-18 16:33:21,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-18 16:33:21,956 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 16:33:21,956 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 16:33:21,963 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-18 16:33:22,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 16:33:22,162 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 16:33:22,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 16:33:22,163 INFO L85 PathProgramCache]: Analyzing trace with hash -88441627, now seen corresponding path program 3 times [2023-12-18 16:33:22,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 16:33:22,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897019757] [2023-12-18 16:33:22,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 16:33:22,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 16:33:22,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 16:33:22,387 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-12-18 16:33:22,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 16:33:22,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897019757] [2023-12-18 16:33:22,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897019757] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 16:33:22,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1700256280] [2023-12-18 16:33:22,388 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-18 16:33:22,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 16:33:22,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 16:33:22,391 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) [2023-12-18 16:33:22,412 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-18 16:33:22,524 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-12-18 16:33:22,524 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 16:33:22,526 INFO L262 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-18 16:33:22,529 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 16:33:22,551 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-12-18 16:33:22,552 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 16:33:22,610 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-12-18 16:33:22,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1700256280] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 16:33:22,610 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 16:33:22,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-12-18 16:33:22,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709782206] [2023-12-18 16:33:22,611 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 16:33:22,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-18 16:33:22,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 16:33:22,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-18 16:33:22,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-12-18 16:33:22,613 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand has 13 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 12 states have internal predecessors, (30), 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) [2023-12-18 16:33:22,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 16:33:22,648 INFO L93 Difference]: Finished difference Result 72 states and 87 transitions. [2023-12-18 16:33:22,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-18 16:33:22,649 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2023-12-18 16:33:22,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 16:33:22,650 INFO L225 Difference]: With dead ends: 72 [2023-12-18 16:33:22,651 INFO L226 Difference]: Without dead ends: 42 [2023-12-18 16:33:22,651 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-12-18 16:33:22,651 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 16:33:22,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 16:33:22,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2023-12-18 16:33:22,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2023-12-18 16:33:22,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.146341463414634) internal successors, (47), 41 states have internal predecessors, (47), 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) [2023-12-18 16:33:22,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 47 transitions. [2023-12-18 16:33:22,662 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 47 transitions. Word has length 34 [2023-12-18 16:33:22,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 16:33:22,662 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 47 transitions. [2023-12-18 16:33:22,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 12 states have internal predecessors, (30), 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) [2023-12-18 16:33:22,663 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 47 transitions. [2023-12-18 16:33:22,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-12-18 16:33:22,665 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 16:33:22,665 INFO L195 NwaCegarLoop]: trace histogram [10, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 16:33:22,674 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-18 16:33:22,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 16:33:22,875 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 16:33:22,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 16:33:22,875 INFO L85 PathProgramCache]: Analyzing trace with hash -2094555003, now seen corresponding path program 4 times [2023-12-18 16:33:22,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 16:33:22,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130541811] [2023-12-18 16:33:22,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 16:33:22,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 16:33:22,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 16:33:23,138 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-12-18 16:33:23,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 16:33:23,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130541811] [2023-12-18 16:33:23,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130541811] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 16:33:23,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1114933456] [2023-12-18 16:33:23,138 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-18 16:33:23,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 16:33:23,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 16:33:23,140 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 16:33:23,161 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-18 16:33:23,286 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-18 16:33:23,286 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 16:33:23,288 INFO L262 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-18 16:33:23,291 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 16:33:23,314 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-12-18 16:33:23,314 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 16:33:23,515 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-12-18 16:33:23,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1114933456] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 16:33:23,516 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 16:33:23,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2023-12-18 16:33:23,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215883608] [2023-12-18 16:33:23,516 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 16:33:23,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-18 16:33:23,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 16:33:23,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-18 16:33:23,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2023-12-18 16:33:23,519 INFO L87 Difference]: Start difference. First operand 42 states and 47 transitions. Second operand has 25 states, 25 states have (on average 1.68) internal successors, (42), 24 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 16:33:23,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 16:33:23,573 INFO L93 Difference]: Finished difference Result 84 states and 105 transitions. [2023-12-18 16:33:23,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-18 16:33:23,573 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.68) internal successors, (42), 24 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2023-12-18 16:33:23,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 16:33:23,574 INFO L225 Difference]: With dead ends: 84 [2023-12-18 16:33:23,574 INFO L226 Difference]: Without dead ends: 54 [2023-12-18 16:33:23,575 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2023-12-18 16:33:23,575 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 16:33:23,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 79 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 16:33:23,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2023-12-18 16:33:23,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2023-12-18 16:33:23,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.1132075471698113) internal successors, (59), 53 states have internal predecessors, (59), 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) [2023-12-18 16:33:23,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2023-12-18 16:33:23,586 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 40 [2023-12-18 16:33:23,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 16:33:23,586 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2023-12-18 16:33:23,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.68) internal successors, (42), 24 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 16:33:23,587 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2023-12-18 16:33:23,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-18 16:33:23,588 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 16:33:23,588 INFO L195 NwaCegarLoop]: trace histogram [22, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 16:33:23,597 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-18 16:33:23,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 16:33:23,795 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 16:33:23,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 16:33:23,795 INFO L85 PathProgramCache]: Analyzing trace with hash 411582405, now seen corresponding path program 5 times [2023-12-18 16:33:23,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 16:33:23,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308842817] [2023-12-18 16:33:23,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 16:33:23,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 16:33:23,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 16:33:24,480 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-12-18 16:33:24,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 16:33:24,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308842817] [2023-12-18 16:33:24,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308842817] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 16:33:24,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2051698967] [2023-12-18 16:33:24,481 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-18 16:33:24,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 16:33:24,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 16:33:24,482 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 16:33:24,504 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-18 16:35:10,663 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2023-12-18 16:35:10,663 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 16:35:10,709 INFO L262 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-18 16:35:10,712 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 16:35:10,763 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-12-18 16:35:10,763 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 16:35:11,553 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-12-18 16:35:11,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2051698967] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 16:35:11,554 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 16:35:11,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 48 [2023-12-18 16:35:11,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14413921] [2023-12-18 16:35:11,554 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 16:35:11,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-12-18 16:35:11,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 16:35:11,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-12-18 16:35:11,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2023-12-18 16:35:11,557 INFO L87 Difference]: Start difference. First operand 54 states and 59 transitions. Second operand has 49 states, 49 states have (on average 1.346938775510204) internal successors, (66), 48 states have internal predecessors, (66), 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) [2023-12-18 16:35:11,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 16:35:11,652 INFO L93 Difference]: Finished difference Result 108 states and 141 transitions. [2023-12-18 16:35:11,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-12-18 16:35:11,652 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.346938775510204) internal successors, (66), 48 states have internal predecessors, (66), 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 52 [2023-12-18 16:35:11,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 16:35:11,653 INFO L225 Difference]: With dead ends: 108 [2023-12-18 16:35:11,653 INFO L226 Difference]: Without dead ends: 78 [2023-12-18 16:35:11,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2023-12-18 16:35:11,655 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-18 16:35:11,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 118 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-18 16:35:11,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2023-12-18 16:35:11,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2023-12-18 16:35:11,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 1.077922077922078) internal successors, (83), 77 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 16:35:11,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 83 transitions. [2023-12-18 16:35:11,661 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 83 transitions. Word has length 52 [2023-12-18 16:35:11,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 16:35:11,661 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 83 transitions. [2023-12-18 16:35:11,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.346938775510204) internal successors, (66), 48 states have internal predecessors, (66), 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) [2023-12-18 16:35:11,662 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 83 transitions. [2023-12-18 16:35:11,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-18 16:35:11,662 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 16:35:11,663 INFO L195 NwaCegarLoop]: trace histogram [46, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 16:35:11,690 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-18 16:35:11,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 16:35:11,880 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 16:35:11,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 16:35:11,881 INFO L85 PathProgramCache]: Analyzing trace with hash 553311813, now seen corresponding path program 6 times [2023-12-18 16:35:11,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 16:35:11,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294720036] [2023-12-18 16:35:11,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 16:35:11,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 16:35:11,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 16:35:13,718 INFO L134 CoverageAnalysis]: Checked inductivity of 1121 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-12-18 16:35:13,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 16:35:13,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294720036] [2023-12-18 16:35:13,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294720036] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 16:35:13,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [55178554] [2023-12-18 16:35:13,719 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-18 16:35:13,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 16:35:13,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 16:35:13,721 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 16:35:13,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-18 16:35:13,995 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2023-12-18 16:35:13,995 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 16:35:13,998 INFO L262 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-18 16:35:14,001 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 16:35:14,124 INFO L134 CoverageAnalysis]: Checked inductivity of 1121 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1111 trivial. 0 not checked. [2023-12-18 16:35:14,124 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 16:35:14,260 INFO L134 CoverageAnalysis]: Checked inductivity of 1121 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1111 trivial. 0 not checked. [2023-12-18 16:35:14,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [55178554] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 16:35:14,261 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 16:35:14,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 7, 7] total 59 [2023-12-18 16:35:14,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102909893] [2023-12-18 16:35:14,261 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 16:35:14,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2023-12-18 16:35:14,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 16:35:14,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2023-12-18 16:35:14,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1241, Invalid=2181, Unknown=0, NotChecked=0, Total=3422 [2023-12-18 16:35:14,264 INFO L87 Difference]: Start difference. First operand 78 states and 83 transitions. Second operand has 59 states, 59 states have (on average 1.3389830508474576) internal successors, (79), 59 states have internal predecessors, (79), 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) [2023-12-18 16:35:14,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 16:35:14,439 INFO L93 Difference]: Finished difference Result 133 states and 167 transitions. [2023-12-18 16:35:14,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2023-12-18 16:35:14,440 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 1.3389830508474576) internal successors, (79), 59 states have internal predecessors, (79), 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 76 [2023-12-18 16:35:14,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 16:35:14,441 INFO L225 Difference]: With dead ends: 133 [2023-12-18 16:35:14,441 INFO L226 Difference]: Without dead ends: 103 [2023-12-18 16:35:14,442 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 460 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1241, Invalid=2181, Unknown=0, NotChecked=0, Total=3422 [2023-12-18 16:35:14,443 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-18 16:35:14,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 103 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-18 16:35:14,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2023-12-18 16:35:14,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2023-12-18 16:35:14,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 102 states have (on average 1.0588235294117647) internal successors, (108), 102 states have internal predecessors, (108), 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) [2023-12-18 16:35:14,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 108 transitions. [2023-12-18 16:35:14,451 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 108 transitions. Word has length 76 [2023-12-18 16:35:14,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 16:35:14,451 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 108 transitions. [2023-12-18 16:35:14,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 1.3389830508474576) internal successors, (79), 59 states have internal predecessors, (79), 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) [2023-12-18 16:35:14,451 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 108 transitions. [2023-12-18 16:35:14,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-18 16:35:14,452 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 16:35:14,452 INFO L195 NwaCegarLoop]: trace histogram [47, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 16:35:14,464 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-18 16:35:14,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 16:35:14,659 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 16:35:14,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 16:35:14,660 INFO L85 PathProgramCache]: Analyzing trace with hash 169379428, now seen corresponding path program 7 times [2023-12-18 16:35:14,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 16:35:14,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480522358] [2023-12-18 16:35:14,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 16:35:14,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 16:35:14,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 16:35:16,594 INFO L134 CoverageAnalysis]: Checked inductivity of 1348 backedges. 0 proven. 1128 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-12-18 16:35:16,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 16:35:16,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480522358] [2023-12-18 16:35:16,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480522358] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 16:35:16,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [744610614] [2023-12-18 16:35:16,595 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-18 16:35:16,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 16:35:16,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 16:35:16,596 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 16:35:16,603 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-18 16:35:16,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 16:35:16,860 INFO L262 TraceCheckSpWp]: Trace formula consists of 801 conjuncts, 49 conjunts are in the unsatisfiable core [2023-12-18 16:35:16,864 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 16:35:16,977 INFO L134 CoverageAnalysis]: Checked inductivity of 1348 backedges. 0 proven. 1128 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-12-18 16:35:16,977 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 16:35:19,609 INFO L134 CoverageAnalysis]: Checked inductivity of 1348 backedges. 0 proven. 1128 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-12-18 16:35:19,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [744610614] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 16:35:19,610 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 16:35:19,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 98 [2023-12-18 16:35:19,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022010523] [2023-12-18 16:35:19,610 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 16:35:19,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 99 states [2023-12-18 16:35:19,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 16:35:19,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2023-12-18 16:35:19,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4851, Invalid=4851, Unknown=0, NotChecked=0, Total=9702 [2023-12-18 16:35:19,616 INFO L87 Difference]: Start difference. First operand 103 states and 108 transitions. Second operand has 99 states, 99 states have (on average 1.1717171717171717) internal successors, (116), 98 states have internal predecessors, (116), 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) [2023-12-18 16:35:19,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 16:35:19,733 INFO L93 Difference]: Finished difference Result 206 states and 264 transitions. [2023-12-18 16:35:19,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2023-12-18 16:35:19,734 INFO L78 Accepts]: Start accepts. Automaton has has 99 states, 99 states have (on average 1.1717171717171717) internal successors, (116), 98 states have internal predecessors, (116), 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 101 [2023-12-18 16:35:19,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 16:35:19,735 INFO L225 Difference]: With dead ends: 206 [2023-12-18 16:35:19,735 INFO L226 Difference]: Without dead ends: 152 [2023-12-18 16:35:19,738 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=4851, Invalid=4851, Unknown=0, NotChecked=0, Total=9702 [2023-12-18 16:35:19,738 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-18 16:35:19,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 79 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-18 16:35:19,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2023-12-18 16:35:19,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2023-12-18 16:35:19,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 151 states have (on average 1.0397350993377483) internal successors, (157), 151 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 16:35:19,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 157 transitions. [2023-12-18 16:35:19,748 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 157 transitions. Word has length 101 [2023-12-18 16:35:19,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 16:35:19,749 INFO L495 AbstractCegarLoop]: Abstraction has 152 states and 157 transitions. [2023-12-18 16:35:19,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 99 states, 99 states have (on average 1.1717171717171717) internal successors, (116), 98 states have internal predecessors, (116), 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) [2023-12-18 16:35:19,749 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 157 transitions. [2023-12-18 16:35:19,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-12-18 16:35:19,751 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 16:35:19,751 INFO L195 NwaCegarLoop]: trace histogram [96, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 16:35:19,763 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-18 16:35:19,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-12-18 16:35:19,958 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 16:35:19,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 16:35:19,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1763991269, now seen corresponding path program 8 times [2023-12-18 16:35:19,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 16:35:19,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482731105] [2023-12-18 16:35:19,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 16:35:19,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 16:35:20,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 16:35:26,046 INFO L134 CoverageAnalysis]: Checked inductivity of 4876 backedges. 0 proven. 4656 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-12-18 16:35:26,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 16:35:26,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482731105] [2023-12-18 16:35:26,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482731105] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 16:35:26,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [649956681] [2023-12-18 16:35:26,047 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-18 16:35:26,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 16:35:26,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 16:35:26,048 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 16:35:26,050 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-18 16:35:26,394 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-18 16:35:26,394 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 16:35:26,400 INFO L262 TraceCheckSpWp]: Trace formula consists of 1242 conjuncts, 98 conjunts are in the unsatisfiable core [2023-12-18 16:35:26,406 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 16:35:26,558 INFO L134 CoverageAnalysis]: Checked inductivity of 4876 backedges. 0 proven. 4656 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-12-18 16:35:26,558 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 16:35:35,886 INFO L134 CoverageAnalysis]: Checked inductivity of 4876 backedges. 0 proven. 4656 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-12-18 16:35:35,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [649956681] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 16:35:35,887 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 16:35:35,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 98, 98] total 196 [2023-12-18 16:35:35,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589390530] [2023-12-18 16:35:35,887 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 16:35:35,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 197 states [2023-12-18 16:35:35,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 16:35:35,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 197 interpolants. [2023-12-18 16:35:35,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19306, Invalid=19306, Unknown=0, NotChecked=0, Total=38612 [2023-12-18 16:35:35,899 INFO L87 Difference]: Start difference. First operand 152 states and 157 transitions. Second operand has 197 states, 197 states have (on average 1.0862944162436547) internal successors, (214), 196 states have internal predecessors, (214), 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) [2023-12-18 16:35:36,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 16:35:36,321 INFO L93 Difference]: Finished difference Result 304 states and 411 transitions. [2023-12-18 16:35:36,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 196 states. [2023-12-18 16:35:36,322 INFO L78 Accepts]: Start accepts. Automaton has has 197 states, 197 states have (on average 1.0862944162436547) internal successors, (214), 196 states have internal predecessors, (214), 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 150 [2023-12-18 16:35:36,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 16:35:36,323 INFO L225 Difference]: With dead ends: 304 [2023-12-18 16:35:36,323 INFO L226 Difference]: Without dead ends: 250 [2023-12-18 16:35:36,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 396 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 384 ImplicationChecksByTransitivity, 12.3s TimeCoverageRelationStatistics Valid=19306, Invalid=19306, Unknown=0, NotChecked=0, Total=38612 [2023-12-18 16:35:36,327 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-18 16:35:36,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 79 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-18 16:35:36,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2023-12-18 16:35:36,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 250. [2023-12-18 16:35:36,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 249 states have (on average 1.0240963855421688) internal successors, (255), 249 states have internal predecessors, (255), 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) [2023-12-18 16:35:36,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 255 transitions. [2023-12-18 16:35:36,339 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 255 transitions. Word has length 150 [2023-12-18 16:35:36,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 16:35:36,340 INFO L495 AbstractCegarLoop]: Abstraction has 250 states and 255 transitions. [2023-12-18 16:35:36,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 197 states, 197 states have (on average 1.0862944162436547) internal successors, (214), 196 states have internal predecessors, (214), 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) [2023-12-18 16:35:36,340 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 255 transitions. [2023-12-18 16:35:36,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2023-12-18 16:35:36,342 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 16:35:36,342 INFO L195 NwaCegarLoop]: trace histogram [194, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 16:35:36,353 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-18 16:35:36,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-18 16:35:36,553 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 16:35:36,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 16:35:36,553 INFO L85 PathProgramCache]: Analyzing trace with hash -1756615483, now seen corresponding path program 9 times [2023-12-18 16:35:36,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 16:35:36,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936441478] [2023-12-18 16:35:36,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 16:35:36,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 16:35:36,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 16:35:55,735 INFO L134 CoverageAnalysis]: Checked inductivity of 19135 backedges. 0 proven. 18915 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-12-18 16:35:55,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 16:35:55,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936441478] [2023-12-18 16:35:55,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936441478] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 16:35:55,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1869183503] [2023-12-18 16:35:55,736 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-18 16:35:55,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 16:35:55,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 16:35:55,737 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 16:35:55,739 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-18 16:35:57,085 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-12-18 16:35:57,085 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 16:35:57,092 INFO L262 TraceCheckSpWp]: Trace formula consists of 468 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-18 16:35:57,096 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 16:35:57,858 INFO L134 CoverageAnalysis]: Checked inductivity of 19135 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 19080 trivial. 0 not checked. [2023-12-18 16:35:57,859 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 16:35:58,693 INFO L134 CoverageAnalysis]: Checked inductivity of 19135 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 19080 trivial. 0 not checked. [2023-12-18 16:35:58,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1869183503] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 16:35:58,694 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 16:35:58,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [196, 13, 13] total 219 [2023-12-18 16:35:58,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198907781] [2023-12-18 16:35:58,694 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 16:35:58,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 219 states [2023-12-18 16:35:58,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 16:35:58,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 219 interpolants. [2023-12-18 16:35:58,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19581, Invalid=28161, Unknown=0, NotChecked=0, Total=47742 [2023-12-18 16:35:58,704 INFO L87 Difference]: Start difference. First operand 250 states and 255 transitions. Second operand has 219 states, 219 states have (on average 1.1187214611872147) internal successors, (245), 219 states have internal predecessors, (245), 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) [2023-12-18 16:35:59,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 16:35:59,305 INFO L93 Difference]: Finished difference Result 353 states and 411 transitions. [2023-12-18 16:35:59,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 219 states. [2023-12-18 16:35:59,306 INFO L78 Accepts]: Start accepts. Automaton has has 219 states, 219 states have (on average 1.1187214611872147) internal successors, (245), 219 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 248 [2023-12-18 16:35:59,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 16:35:59,308 INFO L225 Difference]: With dead ends: 353 [2023-12-18 16:35:59,308 INFO L226 Difference]: Without dead ends: 299 [2023-12-18 16:35:59,312 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 690 GetRequests, 473 SyntacticMatches, 0 SemanticMatches, 217 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4268 ImplicationChecksByTransitivity, 13.5s TimeCoverageRelationStatistics Valid=19581, Invalid=28161, Unknown=0, NotChecked=0, Total=47742 [2023-12-18 16:35:59,312 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 353 mSolverCounterSat, 247 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 247 IncrementalHoareTripleChecker+Valid, 353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-18 16:35:59,313 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 123 Invalid, 600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [247 Valid, 353 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-18 16:35:59,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2023-12-18 16:35:59,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 299. [2023-12-18 16:35:59,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 298 states have (on average 1.0201342281879195) internal successors, (304), 298 states have internal predecessors, (304), 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) [2023-12-18 16:35:59,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 304 transitions. [2023-12-18 16:35:59,325 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 304 transitions. Word has length 248 [2023-12-18 16:35:59,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 16:35:59,325 INFO L495 AbstractCegarLoop]: Abstraction has 299 states and 304 transitions. [2023-12-18 16:35:59,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 219 states, 219 states have (on average 1.1187214611872147) internal successors, (245), 219 states have internal predecessors, (245), 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) [2023-12-18 16:35:59,326 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 304 transitions. [2023-12-18 16:35:59,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2023-12-18 16:35:59,328 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 16:35:59,329 INFO L195 NwaCegarLoop]: trace histogram [195, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 16:35:59,340 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-18 16:35:59,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-18 16:35:59,529 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 16:35:59,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 16:35:59,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1460780324, now seen corresponding path program 10 times [2023-12-18 16:35:59,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 16:35:59,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401211139] [2023-12-18 16:35:59,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 16:35:59,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 16:35:59,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 16:36:19,072 INFO L134 CoverageAnalysis]: Checked inductivity of 20122 backedges. 0 proven. 19110 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-12-18 16:36:19,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 16:36:19,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401211139] [2023-12-18 16:36:19,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401211139] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 16:36:19,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1865018097] [2023-12-18 16:36:19,073 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-18 16:36:19,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 16:36:19,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 16:36:19,077 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 16:36:19,081 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-18 16:36:19,746 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-18 16:36:19,746 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 16:36:19,760 INFO L262 TraceCheckSpWp]: Trace formula consists of 2469 conjuncts, 197 conjunts are in the unsatisfiable core [2023-12-18 16:36:19,768 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 16:36:20,020 INFO L134 CoverageAnalysis]: Checked inductivity of 20122 backedges. 0 proven. 19110 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-12-18 16:36:20,021 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 16:36:57,339 INFO L134 CoverageAnalysis]: Checked inductivity of 20122 backedges. 0 proven. 19110 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-12-18 16:36:57,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1865018097] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 16:36:57,339 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 16:36:57,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [197, 197, 197] total 394 [2023-12-18 16:36:57,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025417561] [2023-12-18 16:36:57,340 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 16:36:57,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 395 states [2023-12-18 16:36:57,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 16:36:57,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 395 interpolants. [2023-12-18 16:36:57,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77815, Invalid=77815, Unknown=0, NotChecked=0, Total=155630 [2023-12-18 16:36:57,367 INFO L87 Difference]: Start difference. First operand 299 states and 304 transitions. Second operand has 395 states, 395 states have (on average 1.0430379746835443) internal successors, (412), 394 states have internal predecessors, (412), 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) [2023-12-18 16:36:58,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 16:36:58,595 INFO L93 Difference]: Finished difference Result 598 states and 804 transitions. [2023-12-18 16:36:58,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 394 states. [2023-12-18 16:36:58,596 INFO L78 Accepts]: Start accepts. Automaton has has 395 states, 395 states have (on average 1.0430379746835443) internal successors, (412), 394 states have internal predecessors, (412), 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 297 [2023-12-18 16:36:58,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 16:36:58,598 INFO L225 Difference]: With dead ends: 598 [2023-12-18 16:36:58,598 INFO L226 Difference]: Without dead ends: 496 [2023-12-18 16:36:58,604 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 789 GetRequests, 396 SyntacticMatches, 0 SemanticMatches, 393 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 780 ImplicationChecksByTransitivity, 48.9s TimeCoverageRelationStatistics Valid=77815, Invalid=77815, Unknown=0, NotChecked=0, Total=155630 [2023-12-18 16:36:58,605 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 459 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-18 16:36:58,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 144 Invalid, 460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 459 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-18 16:36:58,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2023-12-18 16:36:58,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 496. [2023-12-18 16:36:58,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 496 states, 495 states have (on average 1.0121212121212122) internal successors, (501), 495 states have internal predecessors, (501), 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) [2023-12-18 16:36:58,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 501 transitions. [2023-12-18 16:36:58,620 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 501 transitions. Word has length 297 [2023-12-18 16:36:58,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 16:36:58,621 INFO L495 AbstractCegarLoop]: Abstraction has 496 states and 501 transitions. [2023-12-18 16:36:58,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 395 states, 395 states have (on average 1.0430379746835443) internal successors, (412), 394 states have internal predecessors, (412), 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) [2023-12-18 16:36:58,622 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 501 transitions. [2023-12-18 16:36:58,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 495 [2023-12-18 16:36:58,628 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 16:36:58,628 INFO L195 NwaCegarLoop]: trace histogram [392, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 16:36:58,638 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-18 16:36:58,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-18 16:36:58,838 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 16:36:58,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 16:36:58,839 INFO L85 PathProgramCache]: Analyzing trace with hash 1970379749, now seen corresponding path program 11 times [2023-12-18 16:36:58,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 16:36:58,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230378061] [2023-12-18 16:36:58,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 16:36:58,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 16:36:59,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 16:38:17,294 INFO L134 CoverageAnalysis]: Checked inductivity of 78040 backedges. 0 proven. 77028 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-12-18 16:38:17,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 16:38:17,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230378061] [2023-12-18 16:38:17,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230378061] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 16:38:17,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1926746806] [2023-12-18 16:38:17,295 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-18 16:38:17,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 16:38:17,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 16:38:17,298 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 16:38:17,301 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process Received shutdown request... [2023-12-18 16:47:26,835 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-18 16:47:26,835 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 [2023-12-18 16:47:27,846 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 [2023-12-18 16:47:28,036 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forcibly destroying the process [2023-12-18 16:47:28,051 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 137 [2023-12-18 16:47:28,052 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-18 16:47:28,052 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-18 16:47:28,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [394] total 394 [2023-12-18 16:47:28,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331594817] [2023-12-18 16:47:28,053 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-18 16:47:28,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 395 states [2023-12-18 16:47:28,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 16:47:28,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 395 interpolants. [2023-12-18 16:47:28,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77815, Invalid=77815, Unknown=0, NotChecked=0, Total=155630 [2023-12-18 16:47:28,072 INFO L87 Difference]: Start difference. First operand 496 states and 501 transitions. Second operand has 395 states, 395 states have (on average 1.0379746835443038) internal successors, (410), 394 states have internal predecessors, (410), 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) [2023-12-18 16:47:28,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-18 16:47:28,078 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 393 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.5s TimeCoverageRelationStatistics Valid=77815, Invalid=77815, Unknown=0, NotChecked=0, Total=155630 [2023-12-18 16:47:28,079 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 16:47:28,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 16:47:28,081 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-18 16:47:28,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-18 16:47:28,082 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (496states) and FLOYD_HOARE automaton (currently 2 states, 395 states before enhancement),while ReachableStatesComputation was computing reachable states (1 states constructed, input type IntersectNwa). [2023-12-18 16:47:28,086 INFO L445 BasicCegarLoop]: Path program histogram: [11, 1, 1] [2023-12-18 16:47:28,088 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-18 16:47:28,094 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.12 04:47:28 BoogieIcfgContainer [2023-12-18 16:47:28,094 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-18 16:47:28,095 INFO L158 Benchmark]: Toolchain (without parser) took 848715.81ms. Allocated memory was 182.5MB in the beginning and 1.7GB in the end (delta: 1.6GB). Free memory was 135.7MB in the beginning and 1.5GB in the end (delta: -1.4GB). Peak memory consumption was 154.1MB. Max. memory is 8.0GB. [2023-12-18 16:47:28,095 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 182.5MB. Free memory is still 139.0MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-18 16:47:28,095 INFO L158 Benchmark]: CACSL2BoogieTranslator took 190.59ms. Allocated memory is still 182.5MB. Free memory was 135.7MB in the beginning and 124.5MB in the end (delta: 11.2MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-18 16:47:28,095 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.06ms. Allocated memory is still 182.5MB. Free memory was 124.5MB in the beginning and 122.8MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-18 16:47:28,095 INFO L158 Benchmark]: Boogie Preprocessor took 44.09ms. Allocated memory is still 182.5MB. Free memory was 122.8MB in the beginning and 120.3MB in the end (delta: 2.5MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-18 16:47:28,096 INFO L158 Benchmark]: RCFGBuilder took 353.38ms. Allocated memory is still 182.5MB. Free memory was 120.3MB in the beginning and 104.6MB in the end (delta: 15.7MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2023-12-18 16:47:28,096 INFO L158 Benchmark]: TraceAbstraction took 848073.00ms. Allocated memory was 182.5MB in the beginning and 1.7GB in the end (delta: 1.6GB). Free memory was 104.2MB in the beginning and 1.5GB in the end (delta: -1.4GB). Peak memory consumption was 122.6MB. Max. memory is 8.0GB. [2023-12-18 16:47:28,097 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 182.5MB. Free memory is still 139.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 190.59ms. Allocated memory is still 182.5MB. Free memory was 135.7MB in the beginning and 124.5MB in the end (delta: 11.2MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 36.06ms. Allocated memory is still 182.5MB. Free memory was 124.5MB in the beginning and 122.8MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 44.09ms. Allocated memory is still 182.5MB. Free memory was 122.8MB in the beginning and 120.3MB in the end (delta: 2.5MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 353.38ms. Allocated memory is still 182.5MB. Free memory was 120.3MB in the beginning and 104.6MB in the end (delta: 15.7MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * TraceAbstraction took 848073.00ms. Allocated memory was 182.5MB in the beginning and 1.7GB in the end (delta: 1.6GB). Free memory was 104.2MB in the beginning and 1.5GB in the end (delta: -1.4GB). Peak memory consumption was 122.6MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 13]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 13). Cancelled while NwaCegarLoop was constructing difference of abstraction (496states) and FLOYD_HOARE automaton (currently 2 states, 395 states before enhancement),while ReachableStatesComputation was computing reachable states (1 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 848.0s, OverallIterations: 13, TraceHistogramMax: 392, PathProgramHistogramMax: 11, EmptinessCheckTime: 0.0s, AutomataDifference: 3.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 893 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 724 mSDsCounter, 363 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1623 IncrementalHoareTripleChecker+Invalid, 1986 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 363 mSolverCounterUnsat, 169 mSDtfsCounter, 1623 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3108 GetRequests, 1661 SyntacticMatches, 0 SemanticMatches, 1447 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6233 ImplicationChecksByTransitivity, 128.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=496occurred in iteration=12, InterpolantAutomatonStates: 1068, 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, 12 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 109.2s SatisfiabilityAnalysisTime, 179.8s InterpolantComputationTime, 2616 NumberOfCodeBlocks, 2394 NumberOfCodeBlocksAsserted, 50 NumberOfCheckSat, 3621 ConstructedInterpolants, 0 QuantifiedInterpolants, 7267 SizeOfPredicates, 0 NumberOfNonLiveVariables, 6620 ConjunctsInSsa, 412 ConjunctsInUnsatCore, 34 InterpolantComputations, 2 PerfectInterpolantSequences, 46422/219219 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