/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/combinations/Problem05_label43+token_ring.03.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 17:33:38,600 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 17:33:38,670 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 17:33:38,673 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 17:33:38,674 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 17:33:38,695 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 17:33:38,695 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 17:33:38,696 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 17:33:38,696 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 17:33:38,699 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 17:33:38,699 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 17:33:38,699 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 17:33:38,699 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 17:33:38,700 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 17:33:38,701 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 17:33:38,701 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 17:33:38,701 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 17:33:38,701 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 17:33:38,701 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 17:33:38,701 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 17:33:38,702 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 17:33:38,702 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 17:33:38,702 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 17:33:38,702 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 17:33:38,702 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 17:33:38,702 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 17:33:38,703 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 17:33:38,703 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 17:33:38,703 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 17:33:38,703 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 17:33:38,704 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 17:33:38,704 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 17:33:38,704 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 17:33:38,704 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 17:33:38,704 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 17:33:38,705 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 17:33:38,705 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 17:33:38,705 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 17:33:38,705 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 17:33:38,705 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 17:33:38,705 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 17:33:38,705 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 17:33:38,705 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 17:33:38,705 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 17:33:38,886 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 17:33:38,902 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 17:33:38,904 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 17:33:38,905 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 17:33:38,905 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 17:33:38,906 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/Problem05_label43+token_ring.03.cil-1.c [2023-12-15 17:33:39,930 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 17:33:40,388 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 17:33:40,389 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label43+token_ring.03.cil-1.c [2023-12-15 17:33:40,424 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/040dd629c/f489ba1a8fcb4a94b16670035ca09cad/FLAG54b0671fd [2023-12-15 17:33:40,436 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/040dd629c/f489ba1a8fcb4a94b16670035ca09cad [2023-12-15 17:33:40,438 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 17:33:40,438 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 17:33:40,440 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 17:33:40,440 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 17:33:40,443 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 17:33:40,444 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 05:33:40" (1/1) ... [2023-12-15 17:33:40,445 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fc5e4db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:33:40, skipping insertion in model container [2023-12-15 17:33:40,445 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 05:33:40" (1/1) ... [2023-12-15 17:33:40,576 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 17:33:41,785 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label43+token_ring.03.cil-1.c[381679,381692] [2023-12-15 17:33:41,803 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label43+token_ring.03.cil-1.c[383339,383352] [2023-12-15 17:33:41,925 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 17:33:41,933 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 17:33:42,635 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label43+token_ring.03.cil-1.c[381679,381692] [2023-12-15 17:33:42,638 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label43+token_ring.03.cil-1.c[383339,383352] [2023-12-15 17:33:42,657 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 17:33:42,697 INFO L206 MainTranslator]: Completed translation [2023-12-15 17:33:42,697 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:33:42 WrapperNode [2023-12-15 17:33:42,697 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 17:33:42,699 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 17:33:42,699 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 17:33:42,699 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 17:33:42,703 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:33:42" (1/1) ... [2023-12-15 17:33:42,786 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:33:42" (1/1) ... [2023-12-15 17:33:43,095 INFO L138 Inliner]: procedures = 50, calls = 51, calls flagged for inlining = 27, calls inlined = 27, statements flattened = 12699 [2023-12-15 17:33:43,096 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 17:33:43,097 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 17:33:43,097 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 17:33:43,097 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 17:33:43,105 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:33:42" (1/1) ... [2023-12-15 17:33:43,105 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:33:42" (1/1) ... [2023-12-15 17:33:43,235 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:33:42" (1/1) ... [2023-12-15 17:33:43,303 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-15 17:33:43,303 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:33:42" (1/1) ... [2023-12-15 17:33:43,303 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:33:42" (1/1) ... [2023-12-15 17:33:43,405 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:33:42" (1/1) ... [2023-12-15 17:33:43,504 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:33:42" (1/1) ... [2023-12-15 17:33:43,528 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:33:42" (1/1) ... [2023-12-15 17:33:43,545 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:33:42" (1/1) ... [2023-12-15 17:33:43,617 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 17:33:43,618 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 17:33:43,618 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 17:33:43,618 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 17:33:43,619 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:33:42" (1/1) ... [2023-12-15 17:33:43,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 17:33:43,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 17:33:43,709 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-15 17:33:43,780 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-15 17:33:43,809 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 17:33:43,809 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-12-15 17:33:43,809 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-12-15 17:33:43,809 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-15 17:33:43,809 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-15 17:33:43,809 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-12-15 17:33:43,809 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-12-15 17:33:43,809 INFO L130 BoogieDeclarations]: Found specification of procedure error [2023-12-15 17:33:43,809 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2023-12-15 17:33:43,809 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-12-15 17:33:43,810 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-12-15 17:33:43,810 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-12-15 17:33:43,810 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-12-15 17:33:43,810 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-12-15 17:33:43,810 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-12-15 17:33:43,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 17:33:43,810 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 17:33:43,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 17:33:43,937 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 17:33:43,939 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 17:33:49,328 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 17:33:49,425 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 17:33:49,425 INFO L309 CfgBuilder]: Removed 7 assume(true) statements. [2023-12-15 17:33:49,425 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 05:33:49 BoogieIcfgContainer [2023-12-15 17:33:49,426 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 17:33:49,428 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 17:33:49,428 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 17:33:49,430 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 17:33:49,430 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 05:33:40" (1/3) ... [2023-12-15 17:33:49,431 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51536aa5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 05:33:49, skipping insertion in model container [2023-12-15 17:33:49,431 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:33:42" (2/3) ... [2023-12-15 17:33:49,431 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51536aa5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 05:33:49, skipping insertion in model container [2023-12-15 17:33:49,431 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 05:33:49" (3/3) ... [2023-12-15 17:33:49,432 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label43+token_ring.03.cil-1.c [2023-12-15 17:33:49,444 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 17:33:49,445 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-15 17:33:49,513 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 17:33:49,519 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;@15d063a9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 17:33:49,520 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-15 17:33:49,533 INFO L276 IsEmpty]: Start isEmpty. Operand has 2272 states, 2243 states have (on average 1.8849754792688365) internal successors, (4228), 2248 states have internal predecessors, (4228), 19 states have call successors, (19), 7 states have call predecessors, (19), 7 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-15 17:33:49,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-15 17:33:49,546 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:33:49,547 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:33:49,547 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:33:49,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:33:49,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1198396318, now seen corresponding path program 1 times [2023-12-15 17:33:49,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:33:49,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678086111] [2023-12-15 17:33:49,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:33:49,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:33:49,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:33:49,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:33:49,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:33:49,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-15 17:33:49,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:33:49,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-15 17:33:50,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:33:50,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-15 17:33:50,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:33:50,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-15 17:33:50,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:33:50,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:33:50,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:33:50,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678086111] [2023-12-15 17:33:50,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678086111] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:33:50,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:33:50,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 17:33:50,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917909599] [2023-12-15 17:33:50,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:33:50,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 17:33:50,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:33:50,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 17:33:50,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-15 17:33:50,082 INFO L87 Difference]: Start difference. First operand has 2272 states, 2243 states have (on average 1.8849754792688365) internal successors, (4228), 2248 states have internal predecessors, (4228), 19 states have call successors, (19), 7 states have call predecessors, (19), 7 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:33:50,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:33:50,989 INFO L93 Difference]: Finished difference Result 4754 states and 8887 transitions. [2023-12-15 17:33:50,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-15 17:33:50,991 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 72 [2023-12-15 17:33:50,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:33:51,007 INFO L225 Difference]: With dead ends: 4754 [2023-12-15 17:33:51,007 INFO L226 Difference]: Without dead ends: 2485 [2023-12-15 17:33:51,013 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-12-15 17:33:51,015 INFO L413 NwaCegarLoop]: 4085 mSDtfsCounter, 4475 mSDsluCounter, 12233 mSDsCounter, 0 mSdLazyCounter, 797 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4485 SdHoareTripleChecker+Valid, 16318 SdHoareTripleChecker+Invalid, 877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 797 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-15 17:33:51,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4485 Valid, 16318 Invalid, 877 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [80 Valid, 797 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-15 17:33:51,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2485 states. [2023-12-15 17:33:51,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2485 to 2404. [2023-12-15 17:33:51,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2404 states, 2358 states have (on average 1.8379983036471585) internal successors, (4334), 2362 states have internal predecessors, (4334), 31 states have call successors, (31), 13 states have call predecessors, (31), 13 states have return successors, (32), 29 states have call predecessors, (32), 29 states have call successors, (32) [2023-12-15 17:33:51,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2404 states to 2404 states and 4397 transitions. [2023-12-15 17:33:51,097 INFO L78 Accepts]: Start accepts. Automaton has 2404 states and 4397 transitions. Word has length 72 [2023-12-15 17:33:51,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:33:51,098 INFO L495 AbstractCegarLoop]: Abstraction has 2404 states and 4397 transitions. [2023-12-15 17:33:51,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:33:51,098 INFO L276 IsEmpty]: Start isEmpty. Operand 2404 states and 4397 transitions. [2023-12-15 17:33:51,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-15 17:33:51,100 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:33:51,100 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:33:51,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-15 17:33:51,101 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:33:51,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:33:51,101 INFO L85 PathProgramCache]: Analyzing trace with hash -934532770, now seen corresponding path program 1 times [2023-12-15 17:33:51,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:33:51,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274087394] [2023-12-15 17:33:51,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:33:51,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:33:51,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:33:51,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:33:51,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:33:51,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-15 17:33:51,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:33:51,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-15 17:33:51,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:33:51,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-15 17:33:51,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:33:51,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-15 17:33:51,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:33:51,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:33:51,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:33:51,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274087394] [2023-12-15 17:33:51,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274087394] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:33:51,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:33:51,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 17:33:51,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770726752] [2023-12-15 17:33:51,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:33:51,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 17:33:51,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:33:51,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 17:33:51,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:33:51,259 INFO L87 Difference]: Start difference. First operand 2404 states and 4397 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:33:52,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:33:52,346 INFO L93 Difference]: Finished difference Result 2937 states and 5237 transitions. [2023-12-15 17:33:52,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 17:33:52,347 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 72 [2023-12-15 17:33:52,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:33:52,356 INFO L225 Difference]: With dead ends: 2937 [2023-12-15 17:33:52,356 INFO L226 Difference]: Without dead ends: 2663 [2023-12-15 17:33:52,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-15 17:33:52,358 INFO L413 NwaCegarLoop]: 4173 mSDtfsCounter, 4467 mSDsluCounter, 16502 mSDsCounter, 0 mSdLazyCounter, 1301 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4477 SdHoareTripleChecker+Valid, 20675 SdHoareTripleChecker+Invalid, 1348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-15 17:33:52,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4477 Valid, 20675 Invalid, 1348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1301 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-15 17:33:52,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2663 states. [2023-12-15 17:33:52,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2663 to 2532. [2023-12-15 17:33:52,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2532 states, 2467 states have (on average 1.8252938792055127) internal successors, (4503), 2472 states have internal predecessors, (4503), 43 states have call successors, (43), 19 states have call predecessors, (43), 20 states have return successors, (46), 42 states have call predecessors, (46), 41 states have call successors, (46) [2023-12-15 17:33:52,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2532 states to 2532 states and 4592 transitions. [2023-12-15 17:33:52,405 INFO L78 Accepts]: Start accepts. Automaton has 2532 states and 4592 transitions. Word has length 72 [2023-12-15 17:33:52,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:33:52,405 INFO L495 AbstractCegarLoop]: Abstraction has 2532 states and 4592 transitions. [2023-12-15 17:33:52,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:33:52,405 INFO L276 IsEmpty]: Start isEmpty. Operand 2532 states and 4592 transitions. [2023-12-15 17:33:52,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-15 17:33:52,407 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:33:52,407 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:33:52,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-15 17:33:52,408 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:33:52,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:33:52,408 INFO L85 PathProgramCache]: Analyzing trace with hash -373832992, now seen corresponding path program 1 times [2023-12-15 17:33:52,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:33:52,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768769659] [2023-12-15 17:33:52,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:33:52,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:33:52,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:33:52,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:33:52,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:33:52,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-15 17:33:52,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:33:52,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-15 17:33:52,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:33:52,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-15 17:33:52,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:33:52,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-15 17:33:52,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:33:52,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:33:52,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:33:52,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768769659] [2023-12-15 17:33:52,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768769659] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:33:52,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:33:52,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 17:33:52,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685780448] [2023-12-15 17:33:52,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:33:52,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 17:33:52,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:33:52,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 17:33:52,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:33:52,513 INFO L87 Difference]: Start difference. First operand 2532 states and 4592 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:33:53,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:33:53,571 INFO L93 Difference]: Finished difference Result 3398 states and 5954 transitions. [2023-12-15 17:33:53,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 17:33:53,572 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 72 [2023-12-15 17:33:53,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:33:53,581 INFO L225 Difference]: With dead ends: 3398 [2023-12-15 17:33:53,581 INFO L226 Difference]: Without dead ends: 2996 [2023-12-15 17:33:53,582 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-15 17:33:53,583 INFO L413 NwaCegarLoop]: 4171 mSDtfsCounter, 4465 mSDsluCounter, 16502 mSDsCounter, 0 mSdLazyCounter, 1297 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4475 SdHoareTripleChecker+Valid, 20673 SdHoareTripleChecker+Invalid, 1346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-15 17:33:53,583 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4475 Valid, 20673 Invalid, 1346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1297 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-15 17:33:53,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2996 states. [2023-12-15 17:33:53,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2996 to 2789. [2023-12-15 17:33:53,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2789 states, 2686 states have (on average 1.802680565897245) internal successors, (4842), 2693 states have internal predecessors, (4842), 67 states have call successors, (67), 31 states have call predecessors, (67), 34 states have return successors, (78), 68 states have call predecessors, (78), 65 states have call successors, (78) [2023-12-15 17:33:53,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2789 states to 2789 states and 4987 transitions. [2023-12-15 17:33:53,634 INFO L78 Accepts]: Start accepts. Automaton has 2789 states and 4987 transitions. Word has length 72 [2023-12-15 17:33:53,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:33:53,634 INFO L495 AbstractCegarLoop]: Abstraction has 2789 states and 4987 transitions. [2023-12-15 17:33:53,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:33:53,634 INFO L276 IsEmpty]: Start isEmpty. Operand 2789 states and 4987 transitions. [2023-12-15 17:33:53,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-15 17:33:53,636 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:33:53,636 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:33:53,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-15 17:33:53,636 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:33:53,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:33:53,637 INFO L85 PathProgramCache]: Analyzing trace with hash 59896094, now seen corresponding path program 1 times [2023-12-15 17:33:53,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:33:53,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289224849] [2023-12-15 17:33:53,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:33:53,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:33:53,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:33:53,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:33:53,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:33:53,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-15 17:33:53,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:33:53,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-15 17:33:53,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:33:53,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-15 17:33:53,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:33:53,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-15 17:33:53,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:33:53,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:33:53,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:33:53,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289224849] [2023-12-15 17:33:53,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289224849] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:33:53,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:33:53,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 17:33:53,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072774095] [2023-12-15 17:33:53,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:33:53,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 17:33:53,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:33:53,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 17:33:53,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:33:53,725 INFO L87 Difference]: Start difference. First operand 2789 states and 4987 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:33:54,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:33:54,211 INFO L93 Difference]: Finished difference Result 3643 states and 6340 transitions. [2023-12-15 17:33:54,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 17:33:54,211 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 72 [2023-12-15 17:33:54,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:33:54,220 INFO L225 Difference]: With dead ends: 3643 [2023-12-15 17:33:54,220 INFO L226 Difference]: Without dead ends: 2984 [2023-12-15 17:33:54,222 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-15 17:33:54,223 INFO L413 NwaCegarLoop]: 4068 mSDtfsCounter, 4402 mSDsluCounter, 12126 mSDsCounter, 0 mSdLazyCounter, 576 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4413 SdHoareTripleChecker+Valid, 16194 SdHoareTripleChecker+Invalid, 646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 17:33:54,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4413 Valid, 16194 Invalid, 646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 576 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 17:33:54,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2984 states. [2023-12-15 17:33:54,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2984 to 2789. [2023-12-15 17:33:54,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2789 states, 2686 states have (on average 1.800819061801936) internal successors, (4837), 2693 states have internal predecessors, (4837), 67 states have call successors, (67), 31 states have call predecessors, (67), 34 states have return successors, (78), 68 states have call predecessors, (78), 65 states have call successors, (78) [2023-12-15 17:33:54,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2789 states to 2789 states and 4982 transitions. [2023-12-15 17:33:54,278 INFO L78 Accepts]: Start accepts. Automaton has 2789 states and 4982 transitions. Word has length 72 [2023-12-15 17:33:54,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:33:54,278 INFO L495 AbstractCegarLoop]: Abstraction has 2789 states and 4982 transitions. [2023-12-15 17:33:54,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:33:54,278 INFO L276 IsEmpty]: Start isEmpty. Operand 2789 states and 4982 transitions. [2023-12-15 17:33:54,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-15 17:33:54,279 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:33:54,279 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:33:54,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-15 17:33:54,280 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:33:54,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:33:54,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1320813344, now seen corresponding path program 1 times [2023-12-15 17:33:54,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:33:54,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77319230] [2023-12-15 17:33:54,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:33:54,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:33:54,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:33:54,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:33:54,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:33:54,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-15 17:33:54,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:33:54,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-15 17:33:54,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:33:54,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-15 17:33:54,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:33:54,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-15 17:33:54,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:33:54,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:33:54,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:33:54,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77319230] [2023-12-15 17:33:54,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77319230] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:33:54,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:33:54,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 17:33:54,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323831489] [2023-12-15 17:33:54,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:33:54,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 17:33:54,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:33:54,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 17:33:54,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:33:54,366 INFO L87 Difference]: Start difference. First operand 2789 states and 4982 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:33:55,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:33:55,434 INFO L93 Difference]: Finished difference Result 4456 states and 7571 transitions. [2023-12-15 17:33:55,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-15 17:33:55,434 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 72 [2023-12-15 17:33:55,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:33:55,448 INFO L225 Difference]: With dead ends: 4456 [2023-12-15 17:33:55,448 INFO L226 Difference]: Without dead ends: 3797 [2023-12-15 17:33:55,451 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-15 17:33:55,452 INFO L413 NwaCegarLoop]: 4169 mSDtfsCounter, 4572 mSDsluCounter, 16497 mSDsCounter, 0 mSdLazyCounter, 1254 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4586 SdHoareTripleChecker+Valid, 20666 SdHoareTripleChecker+Invalid, 1306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-15 17:33:55,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4586 Valid, 20666 Invalid, 1306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 1254 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-15 17:33:55,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3797 states. [2023-12-15 17:33:55,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3797 to 3300. [2023-12-15 17:33:55,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3300 states, 3125 states have (on average 1.76384) internal successors, (5512), 3136 states have internal predecessors, (5512), 111 states have call successors, (111), 55 states have call predecessors, (111), 62 states have return successors, (144), 116 states have call predecessors, (144), 109 states have call successors, (144) [2023-12-15 17:33:55,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3300 states to 3300 states and 5767 transitions. [2023-12-15 17:33:55,549 INFO L78 Accepts]: Start accepts. Automaton has 3300 states and 5767 transitions. Word has length 72 [2023-12-15 17:33:55,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:33:55,549 INFO L495 AbstractCegarLoop]: Abstraction has 3300 states and 5767 transitions. [2023-12-15 17:33:55,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:33:55,550 INFO L276 IsEmpty]: Start isEmpty. Operand 3300 states and 5767 transitions. [2023-12-15 17:33:55,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-15 17:33:55,551 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:33:55,551 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:33:55,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-15 17:33:55,552 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:33:55,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:33:55,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1361488094, now seen corresponding path program 1 times [2023-12-15 17:33:55,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:33:55,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526621607] [2023-12-15 17:33:55,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:33:55,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:33:55,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:33:55,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:33:55,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:33:55,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-15 17:33:55,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:33:55,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-15 17:33:55,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:33:55,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-15 17:33:55,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:33:55,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-15 17:33:55,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:33:55,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:33:55,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:33:55,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526621607] [2023-12-15 17:33:55,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526621607] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:33:55,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:33:55,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 17:33:55,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150427073] [2023-12-15 17:33:55,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:33:55,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 17:33:55,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:33:55,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 17:33:55,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:33:55,683 INFO L87 Difference]: Start difference. First operand 3300 states and 5767 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:33:56,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:33:56,804 INFO L93 Difference]: Finished difference Result 6297 states and 10420 transitions. [2023-12-15 17:33:56,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-15 17:33:56,805 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 72 [2023-12-15 17:33:56,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:33:56,822 INFO L225 Difference]: With dead ends: 6297 [2023-12-15 17:33:56,822 INFO L226 Difference]: Without dead ends: 5127 [2023-12-15 17:33:56,826 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-15 17:33:56,827 INFO L413 NwaCegarLoop]: 4168 mSDtfsCounter, 4474 mSDsluCounter, 16494 mSDsCounter, 0 mSdLazyCounter, 1412 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4483 SdHoareTripleChecker+Valid, 20662 SdHoareTripleChecker+Invalid, 1463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-15 17:33:56,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4483 Valid, 20662 Invalid, 1463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1412 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-15 17:33:56,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5127 states. [2023-12-15 17:33:56,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5127 to 4238. [2023-12-15 17:33:56,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4238 states, 3923 states have (on average 1.712464950293143) internal successors, (6718), 3942 states have internal predecessors, (6718), 195 states have call successors, (195), 103 states have call predecessors, (195), 118 states have return successors, (290), 208 states have call predecessors, (290), 193 states have call successors, (290) [2023-12-15 17:33:56,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4238 states to 4238 states and 7203 transitions. [2023-12-15 17:33:56,964 INFO L78 Accepts]: Start accepts. Automaton has 4238 states and 7203 transitions. Word has length 72 [2023-12-15 17:33:56,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:33:56,964 INFO L495 AbstractCegarLoop]: Abstraction has 4238 states and 7203 transitions. [2023-12-15 17:33:56,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:33:56,965 INFO L276 IsEmpty]: Start isEmpty. Operand 4238 states and 7203 transitions. [2023-12-15 17:33:56,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-15 17:33:56,970 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:33:56,970 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:33:56,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-15 17:33:56,970 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:33:56,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:33:56,971 INFO L85 PathProgramCache]: Analyzing trace with hash -1546693792, now seen corresponding path program 1 times [2023-12-15 17:33:56,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:33:56,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886624724] [2023-12-15 17:33:56,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:33:56,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:33:56,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:33:57,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:33:57,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:33:57,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-15 17:33:57,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:33:57,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-15 17:33:57,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:33:57,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-15 17:33:57,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:33:57,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-15 17:33:57,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:33:57,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:33:57,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:33:57,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886624724] [2023-12-15 17:33:57,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886624724] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:33:57,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:33:57,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 17:33:57,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924438737] [2023-12-15 17:33:57,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:33:57,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 17:33:57,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:33:57,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 17:33:57,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:33:57,069 INFO L87 Difference]: Start difference. First operand 4238 states and 7203 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:33:58,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:33:58,109 INFO L93 Difference]: Finished difference Result 9417 states and 15228 transitions. [2023-12-15 17:33:58,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-15 17:33:58,110 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 72 [2023-12-15 17:33:58,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:33:58,134 INFO L225 Difference]: With dead ends: 9417 [2023-12-15 17:33:58,134 INFO L226 Difference]: Without dead ends: 7309 [2023-12-15 17:33:58,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-15 17:33:58,143 INFO L413 NwaCegarLoop]: 4169 mSDtfsCounter, 4462 mSDsluCounter, 16497 mSDsCounter, 0 mSdLazyCounter, 1210 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4476 SdHoareTripleChecker+Valid, 20666 SdHoareTripleChecker+Invalid, 1263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-15 17:33:58,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4476 Valid, 20666 Invalid, 1263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 1210 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-15 17:33:58,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7309 states. [2023-12-15 17:33:58,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7309 to 6209. [2023-12-15 17:33:58,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6209 states, 5622 states have (on average 1.6577730345072927) internal successors, (9320), 5657 states have internal predecessors, (9320), 355 states have call successors, (355), 199 states have call predecessors, (355), 230 states have return successors, (628), 384 states have call predecessors, (628), 353 states have call successors, (628) [2023-12-15 17:33:58,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6209 states to 6209 states and 10303 transitions. [2023-12-15 17:33:58,349 INFO L78 Accepts]: Start accepts. Automaton has 6209 states and 10303 transitions. Word has length 72 [2023-12-15 17:33:58,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:33:58,349 INFO L495 AbstractCegarLoop]: Abstraction has 6209 states and 10303 transitions. [2023-12-15 17:33:58,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:33:58,350 INFO L276 IsEmpty]: Start isEmpty. Operand 6209 states and 10303 transitions. [2023-12-15 17:33:58,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-15 17:33:58,354 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:33:58,354 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:33:58,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-15 17:33:58,354 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:33:58,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:33:58,354 INFO L85 PathProgramCache]: Analyzing trace with hash -1102793118, now seen corresponding path program 1 times [2023-12-15 17:33:58,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:33:58,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256838551] [2023-12-15 17:33:58,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:33:58,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:33:58,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:33:58,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:33:58,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:33:58,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-15 17:33:58,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:33:58,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-15 17:33:58,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:33:58,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-15 17:33:58,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:33:58,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-15 17:33:58,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:33:58,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:33:58,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:33:58,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256838551] [2023-12-15 17:33:58,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256838551] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:33:58,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:33:58,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 17:33:58,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537149980] [2023-12-15 17:33:58,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:33:58,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 17:33:58,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:33:58,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 17:33:58,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-15 17:33:58,433 INFO L87 Difference]: Start difference. First operand 6209 states and 10303 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:33:59,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:33:59,457 INFO L93 Difference]: Finished difference Result 13635 states and 21859 transitions. [2023-12-15 17:33:59,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-15 17:33:59,457 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 72 [2023-12-15 17:33:59,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:33:59,479 INFO L225 Difference]: With dead ends: 13635 [2023-12-15 17:33:59,479 INFO L226 Difference]: Without dead ends: 9557 [2023-12-15 17:33:59,489 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-12-15 17:33:59,491 INFO L413 NwaCegarLoop]: 4189 mSDtfsCounter, 4620 mSDsluCounter, 12266 mSDsCounter, 0 mSdLazyCounter, 1032 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4647 SdHoareTripleChecker+Valid, 16455 SdHoareTripleChecker+Invalid, 1107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1032 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-15 17:33:59,491 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4647 Valid, 16455 Invalid, 1107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1032 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-15 17:33:59,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9557 states. [2023-12-15 17:33:59,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9557 to 8223. [2023-12-15 17:33:59,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8223 states, 7329 states have (on average 1.6159094010096875) internal successors, (11843), 7397 states have internal predecessors, (11843), 544 states have call successors, (544), 301 states have call predecessors, (544), 348 states have return successors, (899), 556 states have call predecessors, (899), 542 states have call successors, (899) [2023-12-15 17:33:59,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8223 states to 8223 states and 13286 transitions. [2023-12-15 17:33:59,767 INFO L78 Accepts]: Start accepts. Automaton has 8223 states and 13286 transitions. Word has length 72 [2023-12-15 17:33:59,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:33:59,767 INFO L495 AbstractCegarLoop]: Abstraction has 8223 states and 13286 transitions. [2023-12-15 17:33:59,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 17:33:59,768 INFO L276 IsEmpty]: Start isEmpty. Operand 8223 states and 13286 transitions. [2023-12-15 17:33:59,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-12-15 17:33:59,778 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:33:59,778 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:33:59,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-15 17:33:59,779 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:33:59,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:33:59,780 INFO L85 PathProgramCache]: Analyzing trace with hash -342362740, now seen corresponding path program 1 times [2023-12-15 17:33:59,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:33:59,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32441289] [2023-12-15 17:33:59,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:33:59,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:33:59,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:33:59,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:33:59,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:33:59,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-15 17:33:59,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:33:59,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-15 17:33:59,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:33:59,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-15 17:33:59,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:33:59,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-15 17:33:59,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:33:59,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-15 17:33:59,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:33:59,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-15 17:33:59,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:33:59,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-12-15 17:33:59,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:33:59,899 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-15 17:33:59,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:33:59,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32441289] [2023-12-15 17:33:59,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32441289] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 17:33:59,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [830885006] [2023-12-15 17:33:59,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:33:59,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:33:59,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 17:33:59,902 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 17:33:59,907 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 17:34:00,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:34:00,023 INFO L262 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 17:34:00,031 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 17:34:00,077 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-15 17:34:00,078 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 17:34:00,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [830885006] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:34:00,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 17:34:00,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-12-15 17:34:00,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476454883] [2023-12-15 17:34:00,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:34:00,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 17:34:00,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:34:00,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 17:34:00,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:34:00,079 INFO L87 Difference]: Start difference. First operand 8223 states and 13286 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-15 17:34:00,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:34:00,347 INFO L93 Difference]: Finished difference Result 20254 states and 31860 transitions. [2023-12-15 17:34:00,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 17:34:00,347 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 116 [2023-12-15 17:34:00,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:34:00,378 INFO L225 Difference]: With dead ends: 20254 [2023-12-15 17:34:00,378 INFO L226 Difference]: Without dead ends: 14162 [2023-12-15 17:34:00,394 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:34:00,394 INFO L413 NwaCegarLoop]: 4161 mSDtfsCounter, 4134 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4134 SdHoareTripleChecker+Valid, 4346 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:34:00,395 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4134 Valid, 4346 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:34:00,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14162 states. [2023-12-15 17:34:00,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14162 to 14108. [2023-12-15 17:34:00,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14108 states, 12354 states have (on average 1.5695321353407803) internal successors, (19390), 12487 states have internal predecessors, (19390), 1056 states have call successors, (1056), 601 states have call predecessors, (1056), 696 states have return successors, (1737), 1051 states have call predecessors, (1737), 1054 states have call successors, (1737) [2023-12-15 17:34:00,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14108 states to 14108 states and 22183 transitions. [2023-12-15 17:34:00,924 INFO L78 Accepts]: Start accepts. Automaton has 14108 states and 22183 transitions. Word has length 116 [2023-12-15 17:34:00,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:34:00,925 INFO L495 AbstractCegarLoop]: Abstraction has 14108 states and 22183 transitions. [2023-12-15 17:34:00,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-15 17:34:00,925 INFO L276 IsEmpty]: Start isEmpty. Operand 14108 states and 22183 transitions. [2023-12-15 17:34:00,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-12-15 17:34:00,941 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:34:00,941 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:34:00,950 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-15 17:34:01,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:34:01,148 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:34:01,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:34:01,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1138616078, now seen corresponding path program 1 times [2023-12-15 17:34:01,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:34:01,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582863280] [2023-12-15 17:34:01,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:34:01,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:34:01,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:34:01,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:34:01,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:34:01,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-15 17:34:01,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:34:01,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-15 17:34:01,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:34:01,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-15 17:34:01,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:34:01,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-15 17:34:01,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:34:01,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-15 17:34:01,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:34:01,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-15 17:34:01,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:34:01,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-12-15 17:34:01,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:34:01,239 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-15 17:34:01,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:34:01,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582863280] [2023-12-15 17:34:01,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582863280] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 17:34:01,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1604581309] [2023-12-15 17:34:01,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:34:01,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:34:01,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 17:34:01,241 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 17:34:01,243 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 17:34:01,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:34:01,336 INFO L262 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 17:34:01,345 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 17:34:01,384 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-15 17:34:01,384 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 17:34:01,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1604581309] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:34:01,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 17:34:01,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-12-15 17:34:01,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100185809] [2023-12-15 17:34:01,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:34:01,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 17:34:01,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:34:01,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 17:34:01,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:34:01,386 INFO L87 Difference]: Start difference. First operand 14108 states and 22183 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-15 17:34:01,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:34:01,906 INFO L93 Difference]: Finished difference Result 37757 states and 58509 transitions. [2023-12-15 17:34:01,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 17:34:01,907 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 116 [2023-12-15 17:34:01,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:34:01,976 INFO L225 Difference]: With dead ends: 37757 [2023-12-15 17:34:01,977 INFO L226 Difference]: Without dead ends: 25780 [2023-12-15 17:34:02,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:34:02,012 INFO L413 NwaCegarLoop]: 4161 mSDtfsCounter, 4139 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4139 SdHoareTripleChecker+Valid, 4346 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:34:02,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4139 Valid, 4346 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:34:02,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25780 states. [2023-12-15 17:34:02,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25780 to 25676. [2023-12-15 17:34:02,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25676 states, 22228 states have (on average 1.5367104552816269) internal successors, (34158), 22491 states have internal predecessors, (34158), 2054 states have call successors, (2054), 1201 states have call predecessors, (2054), 1392 states have return successors, (3387), 2015 states have call predecessors, (3387), 2052 states have call successors, (3387) [2023-12-15 17:34:03,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25676 states to 25676 states and 39599 transitions. [2023-12-15 17:34:03,089 INFO L78 Accepts]: Start accepts. Automaton has 25676 states and 39599 transitions. Word has length 116 [2023-12-15 17:34:03,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:34:03,090 INFO L495 AbstractCegarLoop]: Abstraction has 25676 states and 39599 transitions. [2023-12-15 17:34:03,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-15 17:34:03,090 INFO L276 IsEmpty]: Start isEmpty. Operand 25676 states and 39599 transitions. [2023-12-15 17:34:03,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-12-15 17:34:03,119 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:34:03,119 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:34:03,134 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-15 17:34:03,324 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,SelfDestructingSolverStorable9 [2023-12-15 17:34:03,324 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:34:03,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:34:03,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1820104396, now seen corresponding path program 1 times [2023-12-15 17:34:03,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:34:03,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641488002] [2023-12-15 17:34:03,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:34:03,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:34:03,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:34:03,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:34:03,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:34:03,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-15 17:34:03,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:34:03,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-15 17:34:03,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:34:03,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-15 17:34:03,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:34:03,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-15 17:34:03,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:34:03,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-15 17:34:03,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:34:03,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-15 17:34:03,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:34:03,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-12-15 17:34:03,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:34:03,430 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-15 17:34:03,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:34:03,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641488002] [2023-12-15 17:34:03,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641488002] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 17:34:03,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1850635061] [2023-12-15 17:34:03,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:34:03,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:34:03,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 17:34:03,450 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 17:34:03,484 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-15 17:34:03,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:34:03,547 INFO L262 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 17:34:03,552 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 17:34:03,570 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-15 17:34:03,570 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 17:34:03,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1850635061] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:34:03,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 17:34:03,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-15 17:34:03,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148301494] [2023-12-15 17:34:03,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:34:03,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 17:34:03,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:34:03,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 17:34:03,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:34:03,572 INFO L87 Difference]: Start difference. First operand 25676 states and 39599 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-15 17:34:04,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:34:04,945 INFO L93 Difference]: Finished difference Result 71415 states and 109971 transitions. [2023-12-15 17:34:04,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 17:34:04,945 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 116 [2023-12-15 17:34:04,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:34:05,123 INFO L225 Difference]: With dead ends: 71415 [2023-12-15 17:34:05,123 INFO L226 Difference]: Without dead ends: 47871 [2023-12-15 17:34:05,158 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:34:05,159 INFO L413 NwaCegarLoop]: 4337 mSDtfsCounter, 182 mSDsluCounter, 4161 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 8498 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:34:05,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 8498 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:34:05,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47871 states. [2023-12-15 17:34:06,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47871 to 47871. [2023-12-15 17:34:06,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47871 states, 41116 states have (on average 1.5094123942017705) internal successors, (62061), 41572 states have internal predecessors, (62061), 3969 states have call successors, (3969), 2401 states have call predecessors, (3969), 2784 states have return successors, (7350), 3961 states have call predecessors, (7350), 3967 states have call successors, (7350) [2023-12-15 17:34:06,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47871 states to 47871 states and 73380 transitions. [2023-12-15 17:34:06,773 INFO L78 Accepts]: Start accepts. Automaton has 47871 states and 73380 transitions. Word has length 116 [2023-12-15 17:34:06,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:34:06,773 INFO L495 AbstractCegarLoop]: Abstraction has 47871 states and 73380 transitions. [2023-12-15 17:34:06,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-15 17:34:06,774 INFO L276 IsEmpty]: Start isEmpty. Operand 47871 states and 73380 transitions. [2023-12-15 17:34:06,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-12-15 17:34:06,900 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:34:06,900 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:34:06,905 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-15 17:34:07,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:34:07,106 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:34:07,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:34:07,107 INFO L85 PathProgramCache]: Analyzing trace with hash 1051187671, now seen corresponding path program 1 times [2023-12-15 17:34:07,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:34:07,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135615572] [2023-12-15 17:34:07,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:34:07,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:34:07,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:34:07,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:34:07,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:34:07,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-15 17:34:07,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:34:07,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-15 17:34:07,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:34:07,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-15 17:34:07,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:34:07,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-15 17:34:07,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:34:07,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-15 17:34:07,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:34:07,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-15 17:34:07,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:34:07,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-12-15 17:34:07,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:34:07,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-15 17:34:07,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:34:07,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-12-15 17:34:07,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:34:07,207 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-12-15 17:34:07,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:34:07,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135615572] [2023-12-15 17:34:07,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135615572] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 17:34:07,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1279542118] [2023-12-15 17:34:07,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:34:07,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:34:07,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 17:34:07,209 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 17:34:07,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-15 17:34:07,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:34:07,317 INFO L262 TraceCheckSpWp]: Trace formula consists of 592 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 17:34:07,323 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 17:34:07,411 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-15 17:34:07,412 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 17:34:07,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1279542118] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:34:07,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 17:34:07,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-12-15 17:34:07,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475019634] [2023-12-15 17:34:07,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:34:07,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 17:34:07,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:34:07,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 17:34:07,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:34:07,414 INFO L87 Difference]: Start difference. First operand 47871 states and 73380 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 2 states have internal predecessors, (107), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-15 17:34:10,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:34:10,008 INFO L93 Difference]: Finished difference Result 137299 states and 210371 transitions. [2023-12-15 17:34:10,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 17:34:10,008 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 2 states have internal predecessors, (107), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 149 [2023-12-15 17:34:10,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:34:10,328 INFO L225 Difference]: With dead ends: 137299 [2023-12-15 17:34:10,328 INFO L226 Difference]: Without dead ends: 91565 [2023-12-15 17:34:10,418 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:34:10,419 INFO L413 NwaCegarLoop]: 4164 mSDtfsCounter, 4093 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4093 SdHoareTripleChecker+Valid, 4349 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:34:10,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4093 Valid, 4349 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:34:10,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91565 states. [2023-12-15 17:34:13,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91565 to 91161. [2023-12-15 17:34:13,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91161 states, 78354 states have (on average 1.4957628200219517) internal successors, (117199), 79262 states have internal predecessors, (117199), 7383 states have call successors, (7383), 4655 states have call predecessors, (7383), 5422 states have return successors, (13774), 7307 states have call predecessors, (13774), 7381 states have call successors, (13774) [2023-12-15 17:34:14,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91161 states to 91161 states and 138356 transitions. [2023-12-15 17:34:14,157 INFO L78 Accepts]: Start accepts. Automaton has 91161 states and 138356 transitions. Word has length 149 [2023-12-15 17:34:14,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:34:14,162 INFO L495 AbstractCegarLoop]: Abstraction has 91161 states and 138356 transitions. [2023-12-15 17:34:14,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 2 states have internal predecessors, (107), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-15 17:34:14,162 INFO L276 IsEmpty]: Start isEmpty. Operand 91161 states and 138356 transitions. [2023-12-15 17:34:14,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2023-12-15 17:34:14,374 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:34:14,374 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:34:14,380 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-15 17:34:14,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:34:14,581 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:34:14,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:34:14,581 INFO L85 PathProgramCache]: Analyzing trace with hash -404294200, now seen corresponding path program 1 times [2023-12-15 17:34:14,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:34:14,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364562392] [2023-12-15 17:34:14,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:34:14,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:34:14,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:34:14,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:34:14,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:34:14,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-15 17:34:14,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:34:14,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-15 17:34:14,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:34:14,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-15 17:34:14,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:34:14,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-15 17:34:14,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:34:14,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-15 17:34:14,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:34:14,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-15 17:34:14,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:34:14,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-15 17:34:14,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:34:14,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-12-15 17:34:14,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:34:14,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-15 17:34:14,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:34:14,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-12-15 17:34:14,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:34:14,837 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-12-15 17:34:14,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:34:14,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364562392] [2023-12-15 17:34:14,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364562392] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 17:34:14,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [938456234] [2023-12-15 17:34:14,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:34:14,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:34:14,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 17:34:14,839 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) [2023-12-15 17:34:14,871 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-15 17:34:14,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:34:14,952 INFO L262 TraceCheckSpWp]: Trace formula consists of 634 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 17:34:14,955 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 17:34:15,020 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-15 17:34:15,020 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 17:34:15,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [938456234] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:34:15,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 17:34:15,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-15 17:34:15,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605065329] [2023-12-15 17:34:15,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:34:15,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 17:34:15,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:34:15,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 17:34:15,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:34:15,022 INFO L87 Difference]: Start difference. First operand 91161 states and 138356 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-15 17:34:17,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:34:17,325 INFO L93 Difference]: Finished difference Result 139099 states and 211689 transitions. [2023-12-15 17:34:17,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 17:34:17,326 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 166 [2023-12-15 17:34:17,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:34:17,563 INFO L225 Difference]: With dead ends: 139099 [2023-12-15 17:34:17,563 INFO L226 Difference]: Without dead ends: 77541 [2023-12-15 17:34:17,810 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:34:17,811 INFO L413 NwaCegarLoop]: 4158 mSDtfsCounter, 4113 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4113 SdHoareTripleChecker+Valid, 4194 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:34:17,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4113 Valid, 4194 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:34:17,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77541 states. [2023-12-15 17:34:19,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77541 to 55773. [2023-12-15 17:34:19,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55773 states, 48182 states have (on average 1.458117139180607) internal successors, (70255), 48646 states have internal predecessors, (70255), 4299 states have call successors, (4299), 2907 states have call predecessors, (4299), 3290 states have return successors, (6802), 4251 states have call predecessors, (6802), 4297 states have call successors, (6802) [2023-12-15 17:34:20,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55773 states to 55773 states and 81356 transitions. [2023-12-15 17:34:20,083 INFO L78 Accepts]: Start accepts. Automaton has 55773 states and 81356 transitions. Word has length 166 [2023-12-15 17:34:20,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:34:20,083 INFO L495 AbstractCegarLoop]: Abstraction has 55773 states and 81356 transitions. [2023-12-15 17:34:20,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-15 17:34:20,084 INFO L276 IsEmpty]: Start isEmpty. Operand 55773 states and 81356 transitions. [2023-12-15 17:34:20,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2023-12-15 17:34:20,167 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:34:20,167 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:34:20,172 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-15 17:34:20,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-15 17:34:20,372 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:34:20,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:34:20,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1161592967, now seen corresponding path program 1 times [2023-12-15 17:34:20,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:34:20,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533429497] [2023-12-15 17:34:20,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:34:20,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:34:20,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:34:20,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:34:20,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:34:20,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-15 17:34:20,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:34:20,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-15 17:34:20,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:34:20,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-15 17:34:20,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:34:20,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-15 17:34:20,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:34:20,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-15 17:34:20,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:34:20,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-15 17:34:20,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:34:20,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-15 17:34:20,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:34:20,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-12-15 17:34:20,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:34:20,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-15 17:34:20,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:34:20,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-12-15 17:34:20,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:34:20,477 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-12-15 17:34:20,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:34:20,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533429497] [2023-12-15 17:34:20,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533429497] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 17:34:20,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1856869444] [2023-12-15 17:34:20,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:34:20,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:34:20,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 17:34:20,478 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) [2023-12-15 17:34:20,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-15 17:34:20,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:34:20,586 INFO L262 TraceCheckSpWp]: Trace formula consists of 628 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 17:34:20,588 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 17:34:20,629 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-15 17:34:20,629 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 17:34:20,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1856869444] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:34:20,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 17:34:20,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-15 17:34:20,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458948870] [2023-12-15 17:34:20,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:34:20,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 17:34:20,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:34:20,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 17:34:20,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:34:20,631 INFO L87 Difference]: Start difference. First operand 55773 states and 81356 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-15 17:34:22,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:34:22,914 INFO L93 Difference]: Finished difference Result 127117 states and 189540 transitions. [2023-12-15 17:34:22,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 17:34:22,915 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 166 [2023-12-15 17:34:22,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:34:23,141 INFO L225 Difference]: With dead ends: 127117 [2023-12-15 17:34:23,141 INFO L226 Difference]: Without dead ends: 73483 [2023-12-15 17:34:23,221 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:34:23,222 INFO L413 NwaCegarLoop]: 4165 mSDtfsCounter, 4133 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4133 SdHoareTripleChecker+Valid, 4222 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 17:34:23,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4133 Valid, 4222 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 17:34:23,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73483 states. [2023-12-15 17:34:25,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73483 to 73311. [2023-12-15 17:34:25,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73311 states, 63760 states have (on average 1.4389115432873274) internal successors, (91745), 64224 states have internal predecessors, (91745), 5281 states have call successors, (5281), 3885 states have call predecessors, (5281), 4268 states have return successors, (10831), 5233 states have call predecessors, (10831), 5279 states have call successors, (10831) [2023-12-15 17:34:25,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73311 states to 73311 states and 107857 transitions. [2023-12-15 17:34:25,889 INFO L78 Accepts]: Start accepts. Automaton has 73311 states and 107857 transitions. Word has length 166 [2023-12-15 17:34:25,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:34:25,890 INFO L495 AbstractCegarLoop]: Abstraction has 73311 states and 107857 transitions. [2023-12-15 17:34:25,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-15 17:34:25,890 INFO L276 IsEmpty]: Start isEmpty. Operand 73311 states and 107857 transitions. [2023-12-15 17:34:26,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2023-12-15 17:34:26,021 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:34:26,022 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:34:26,046 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-15 17:34:26,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:34:26,226 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:34:26,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:34:26,227 INFO L85 PathProgramCache]: Analyzing trace with hash 1722529481, now seen corresponding path program 1 times [2023-12-15 17:34:26,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:34:26,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755519530] [2023-12-15 17:34:26,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:34:26,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:34:26,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:34:26,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:34:26,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:34:26,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-15 17:34:26,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:34:26,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-15 17:34:26,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:34:26,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-15 17:34:26,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:34:26,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-15 17:34:26,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:34:26,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-15 17:34:26,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:34:26,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-15 17:34:26,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:34:26,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-15 17:34:26,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:34:26,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-12-15 17:34:26,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:34:26,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-15 17:34:26,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:34:26,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-12-15 17:34:26,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:34:26,309 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-12-15 17:34:26,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:34:26,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755519530] [2023-12-15 17:34:26,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755519530] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 17:34:26,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [715832846] [2023-12-15 17:34:26,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:34:26,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:34:26,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 17:34:26,326 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) [2023-12-15 17:34:26,340 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-15 17:34:26,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:34:26,432 INFO L262 TraceCheckSpWp]: Trace formula consists of 622 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 17:34:26,433 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 17:34:26,465 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-12-15 17:34:26,465 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 17:34:26,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [715832846] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:34:26,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 17:34:26,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-15 17:34:26,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630741099] [2023-12-15 17:34:26,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:34:26,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 17:34:26,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:34:26,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 17:34:26,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:34:26,467 INFO L87 Difference]: Start difference. First operand 73311 states and 107857 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-15 17:34:28,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:34:28,762 INFO L93 Difference]: Finished difference Result 125567 states and 183328 transitions. [2023-12-15 17:34:28,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 17:34:28,762 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 166 [2023-12-15 17:34:28,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:34:28,969 INFO L225 Difference]: With dead ends: 125567 [2023-12-15 17:34:28,969 INFO L226 Difference]: Without dead ends: 76731 [2023-12-15 17:34:29,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:34:29,039 INFO L413 NwaCegarLoop]: 4199 mSDtfsCounter, 4107 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4107 SdHoareTripleChecker+Valid, 4390 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:34:29,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4107 Valid, 4390 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:34:29,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76731 states. [2023-12-15 17:34:31,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76731 to 76471. [2023-12-15 17:34:31,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76471 states, 66664 states have (on average 1.419431777271091) internal successors, (94625), 67128 states have internal predecessors, (94625), 5325 states have call successors, (5325), 4081 states have call predecessors, (5325), 4480 states have return successors, (11087), 5293 states have call predecessors, (11087), 5323 states have call successors, (11087) [2023-12-15 17:34:31,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76471 states to 76471 states and 111037 transitions. [2023-12-15 17:34:31,826 INFO L78 Accepts]: Start accepts. Automaton has 76471 states and 111037 transitions. Word has length 166 [2023-12-15 17:34:31,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:34:31,826 INFO L495 AbstractCegarLoop]: Abstraction has 76471 states and 111037 transitions. [2023-12-15 17:34:31,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-15 17:34:31,826 INFO L276 IsEmpty]: Start isEmpty. Operand 76471 states and 111037 transitions. [2023-12-15 17:34:31,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2023-12-15 17:34:31,959 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:34:31,960 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:34:31,964 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-15 17:34:32,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:34:32,164 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:34:32,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:34:32,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1066482568, now seen corresponding path program 1 times [2023-12-15 17:34:32,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:34:32,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102741854] [2023-12-15 17:34:32,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:34:32,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:34:32,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:34:32,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 17:34:32,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:34:32,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-15 17:34:32,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:34:32,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-15 17:34:32,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:34:32,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-15 17:34:32,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:34:32,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-15 17:34:32,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:34:32,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-15 17:34:32,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:34:32,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-15 17:34:32,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:34:32,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-15 17:34:32,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:34:32,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-12-15 17:34:32,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:34:32,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-15 17:34:32,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:34:32,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-12-15 17:34:32,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:34:32,272 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-12-15 17:34:32,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:34:32,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102741854] [2023-12-15 17:34:32,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102741854] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 17:34:32,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1670130631] [2023-12-15 17:34:32,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:34:32,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:34:32,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 17:34:32,274 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) [2023-12-15 17:34:32,322 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-15 17:34:32,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:34:32,406 INFO L262 TraceCheckSpWp]: Trace formula consists of 623 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 17:34:32,408 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 17:34:32,427 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-15 17:34:32,427 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 17:34:32,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1670130631] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:34:32,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 17:34:32,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-15 17:34:32,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816278937] [2023-12-15 17:34:32,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:34:32,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 17:34:32,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:34:32,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 17:34:32,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:34:32,429 INFO L87 Difference]: Start difference. First operand 76471 states and 111037 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-15 17:34:36,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:34:36,778 INFO L93 Difference]: Finished difference Result 222761 states and 325689 transitions. [2023-12-15 17:34:36,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 17:34:36,779 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 167 [2023-12-15 17:34:36,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:34:37,360 INFO L225 Difference]: With dead ends: 222761 [2023-12-15 17:34:37,360 INFO L226 Difference]: Without dead ends: 148433 Received shutdown request... [2023-12-15 17:34:37,464 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:34:37,464 INFO L413 NwaCegarLoop]: 4344 mSDtfsCounter, 183 mSDsluCounter, 4156 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 8500 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:34:37,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 8500 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:34:37,481 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 17:34:37,504 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 17:34:37,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148433 states. [2023-12-15 17:34:37,563 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location errorErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-12-15 17:34:37,569 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-15 17:34:37,768 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,SelfDestructingSolverStorable15 [2023-12-15 17:34:37,771 WARN L619 AbstractCegarLoop]: Verification canceled: while executing MinimizeSevpa. [2023-12-15 17:34:37,779 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-12-15 17:34:37,781 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:34:37,783 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 17:34:37,784 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 05:34:37 BoogieIcfgContainer [2023-12-15 17:34:37,784 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 17:34:37,785 INFO L158 Benchmark]: Toolchain (without parser) took 57346.42ms. Allocated memory was 166.7MB in the beginning and 7.4GB in the end (delta: 7.3GB). Free memory was 117.4MB in the beginning and 5.2GB in the end (delta: -5.1GB). Peak memory consumption was 2.8GB. Max. memory is 8.0GB. [2023-12-15 17:34:37,785 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 166.7MB. Free memory is still 121.2MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 17:34:37,785 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2257.66ms. Allocated memory was 166.7MB in the beginning and 208.7MB in the end (delta: 41.9MB). Free memory was 117.4MB in the beginning and 99.9MB in the end (delta: 17.5MB). Peak memory consumption was 130.7MB. Max. memory is 8.0GB. [2023-12-15 17:34:37,785 INFO L158 Benchmark]: Boogie Procedure Inliner took 397.23ms. Allocated memory was 208.7MB in the beginning and 299.9MB in the end (delta: 91.2MB). Free memory was 99.9MB in the beginning and 151.3MB in the end (delta: -51.4MB). Peak memory consumption was 77.6MB. Max. memory is 8.0GB. [2023-12-15 17:34:37,785 INFO L158 Benchmark]: Boogie Preprocessor took 520.27ms. Allocated memory is still 299.9MB. Free memory was 150.8MB in the beginning and 130.9MB in the end (delta: 19.9MB). Peak memory consumption was 74.4MB. Max. memory is 8.0GB. [2023-12-15 17:34:37,786 INFO L158 Benchmark]: RCFGBuilder took 5808.55ms. Allocated memory was 299.9MB in the beginning and 956.3MB in the end (delta: 656.4MB). Free memory was 130.9MB in the beginning and 510.5MB in the end (delta: -379.6MB). Peak memory consumption was 326.1MB. Max. memory is 8.0GB. [2023-12-15 17:34:37,786 INFO L158 Benchmark]: TraceAbstraction took 48356.73ms. Allocated memory was 956.3MB in the beginning and 7.4GB in the end (delta: 6.5GB). Free memory was 509.4MB in the beginning and 5.2GB in the end (delta: -4.7GB). Peak memory consumption was 2.4GB. Max. memory is 8.0GB. [2023-12-15 17:34:37,787 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 166.7MB. Free memory is still 121.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 2257.66ms. Allocated memory was 166.7MB in the beginning and 208.7MB in the end (delta: 41.9MB). Free memory was 117.4MB in the beginning and 99.9MB in the end (delta: 17.5MB). Peak memory consumption was 130.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 397.23ms. Allocated memory was 208.7MB in the beginning and 299.9MB in the end (delta: 91.2MB). Free memory was 99.9MB in the beginning and 151.3MB in the end (delta: -51.4MB). Peak memory consumption was 77.6MB. Max. memory is 8.0GB. * Boogie Preprocessor took 520.27ms. Allocated memory is still 299.9MB. Free memory was 150.8MB in the beginning and 130.9MB in the end (delta: 19.9MB). Peak memory consumption was 74.4MB. Max. memory is 8.0GB. * RCFGBuilder took 5808.55ms. Allocated memory was 299.9MB in the beginning and 956.3MB in the end (delta: 656.4MB). Free memory was 130.9MB in the beginning and 510.5MB in the end (delta: -379.6MB). Peak memory consumption was 326.1MB. Max. memory is 8.0GB. * TraceAbstraction took 48356.73ms. Allocated memory was 956.3MB in the beginning and 7.4GB in the end (delta: 6.5GB). Free memory was 509.4MB in the beginning and 5.2GB in the end (delta: -4.7GB). Peak memory consumption was 2.4GB. 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: 11173]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 11173). Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 11118]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 11118). Cancelled while executing MinimizeSevpa. - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 2272 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 48.3s, OverallIterations: 16, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.8s, AutomataDifference: 26.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 61126 SdHoareTripleChecker+Valid, 6.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 61021 mSDsluCounter, 195154 SdHoareTripleChecker+Invalid, 5.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 128273 mSDsCounter, 501 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 9215 IncrementalHoareTripleChecker+Invalid, 9716 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 501 mSolverCounterUnsat, 66881 mSDtfsCounter, 9215 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1559 GetRequests, 1418 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=91161occurred in iteration=12, InterpolantAutomatonStates: 124, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 15.7s AutomataMinimizationTime, 16 MinimizatonAttempts, 27196 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 2900 NumberOfCodeBlocks, 2900 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 2876 ConstructedInterpolants, 0 QuantifiedInterpolants, 5386 SizeOfPredicates, 0 NumberOfNonLiveVariables, 4551 ConjunctsInSsa, 18 ConjunctsInUnsatCore, 24 InterpolantComputations, 16 PerfectInterpolantSequences, 947/1190 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