/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/combinations/Problem05_label45+token_ring.03.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 11:29:51,533 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 11:29:51,602 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 11:29:51,606 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 11:29:51,606 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 11:29:51,629 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 11:29:51,629 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 11:29:51,629 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 11:29:51,630 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 11:29:51,633 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 11:29:51,633 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 11:29:51,633 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 11:29:51,634 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 11:29:51,635 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 11:29:51,635 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 11:29:51,635 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 11:29:51,635 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 11:29:51,636 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 11:29:51,636 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 11:29:51,636 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 11:29:51,636 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 11:29:51,636 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 11:29:51,637 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 11:29:51,637 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 11:29:51,637 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 11:29:51,637 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 11:29:51,637 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 11:29:51,637 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 11:29:51,638 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 11:29:51,638 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 11:29:51,639 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 11:29:51,639 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 11:29:51,639 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 11:29:51,639 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 11:29:51,639 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 11:29:51,639 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 11:29:51,640 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 11:29:51,640 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 11:29:51,640 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 11:29:51,640 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 11:29:51,640 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 11:29:51,640 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 11:29:51,641 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 11:29:51,641 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-20 11:29:51,801 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 11:29:51,815 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 11:29:51,817 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 11:29:51,818 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 11:29:51,818 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 11:29:51,819 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/Problem05_label45+token_ring.03.cil-1.c [2023-12-20 11:29:52,820 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 11:29:53,305 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 11:29:53,306 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label45+token_ring.03.cil-1.c [2023-12-20 11:29:53,359 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9f9ee9fb/01a98da4f72147a987d7b88a478f2007/FLAG58fd2e545 [2023-12-20 11:29:53,370 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9f9ee9fb/01a98da4f72147a987d7b88a478f2007 [2023-12-20 11:29:53,372 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 11:29:53,373 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 11:29:53,375 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 11:29:53,375 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 11:29:53,378 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 11:29:53,378 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 11:29:53" (1/1) ... [2023-12-20 11:29:53,379 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6250eb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:29:53, skipping insertion in model container [2023-12-20 11:29:53,379 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 11:29:53" (1/1) ... [2023-12-20 11:29:53,542 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 11:29:54,764 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_label45+token_ring.03.cil-1.c[380323,380336] [2023-12-20 11:29:54,786 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_label45+token_ring.03.cil-1.c[383339,383352] [2023-12-20 11:29:54,908 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 11:29:54,917 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 11:29:55,484 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_label45+token_ring.03.cil-1.c[380323,380336] [2023-12-20 11:29:55,488 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_label45+token_ring.03.cil-1.c[383339,383352] [2023-12-20 11:29:55,505 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 11:29:55,547 INFO L206 MainTranslator]: Completed translation [2023-12-20 11:29:55,548 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:29:55 WrapperNode [2023-12-20 11:29:55,548 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 11:29:55,549 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 11:29:55,549 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 11:29:55,549 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 11:29:55,554 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:29:55" (1/1) ... [2023-12-20 11:29:55,620 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:29:55" (1/1) ... [2023-12-20 11:29:55,915 INFO L138 Inliner]: procedures = 50, calls = 51, calls flagged for inlining = 27, calls inlined = 27, statements flattened = 12699 [2023-12-20 11:29:55,916 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 11:29:55,917 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 11:29:55,917 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 11:29:55,917 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 11:29:55,925 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:29:55" (1/1) ... [2023-12-20 11:29:55,926 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:29:55" (1/1) ... [2023-12-20 11:29:55,995 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:29:55" (1/1) ... [2023-12-20 11:29:56,095 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]. [2023-12-20 11:29:56,095 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:29:55" (1/1) ... [2023-12-20 11:29:56,096 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:29:55" (1/1) ... [2023-12-20 11:29:56,309 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:29:55" (1/1) ... [2023-12-20 11:29:56,348 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:29:55" (1/1) ... [2023-12-20 11:29:56,367 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:29:55" (1/1) ... [2023-12-20 11:29:56,387 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:29:55" (1/1) ... [2023-12-20 11:29:56,487 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 11:29:56,488 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 11:29:56,489 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 11:29:56,489 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 11:29:56,490 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:29:55" (1/1) ... [2023-12-20 11:29:56,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 11:29:56,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 11:29:56,574 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-20 11:29:56,613 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-20 11:29:56,644 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 11:29:56,644 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-12-20 11:29:56,644 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-12-20 11:29:56,646 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-20 11:29:56,646 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-20 11:29:56,646 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-12-20 11:29:56,647 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-12-20 11:29:56,647 INFO L130 BoogieDeclarations]: Found specification of procedure error [2023-12-20 11:29:56,647 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2023-12-20 11:29:56,647 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-12-20 11:29:56,647 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-12-20 11:29:56,647 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-12-20 11:29:56,647 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-12-20 11:29:56,647 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-12-20 11:29:56,647 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-12-20 11:29:56,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 11:29:56,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 11:29:56,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 11:29:56,756 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 11:29:56,758 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 11:30:02,130 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 11:30:02,216 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 11:30:02,217 INFO L309 CfgBuilder]: Removed 7 assume(true) statements. [2023-12-20 11:30:02,217 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 11:30:02 BoogieIcfgContainer [2023-12-20 11:30:02,217 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 11:30:02,220 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 11:30:02,220 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 11:30:02,223 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 11:30:02,223 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 11:29:53" (1/3) ... [2023-12-20 11:30:02,223 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2797a634 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 11:30:02, skipping insertion in model container [2023-12-20 11:30:02,223 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 11:29:55" (2/3) ... [2023-12-20 11:30:02,224 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2797a634 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 11:30:02, skipping insertion in model container [2023-12-20 11:30:02,224 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 11:30:02" (3/3) ... [2023-12-20 11:30:02,225 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label45+token_ring.03.cil-1.c [2023-12-20 11:30:02,238 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 11:30:02,238 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-20 11:30:02,306 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 11:30:02,310 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;@43d55ce4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 11:30:02,311 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-20 11:30:02,320 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) [2023-12-20 11:30:02,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-20 11:30:02,334 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:30:02,334 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] [2023-12-20 11:30:02,335 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:30:02,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:30:02,341 INFO L85 PathProgramCache]: Analyzing trace with hash 910636931, now seen corresponding path program 1 times [2023-12-20 11:30:02,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:30:02,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6980439] [2023-12-20 11:30:02,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:30:02,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:30:02,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:02,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:30:02,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:02,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-20 11:30:02,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:02,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-20 11:30:02,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:02,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-20 11:30:02,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:02,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-20 11:30:02,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:02,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 11:30:02,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:30:02,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6980439] [2023-12-20 11:30:02,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6980439] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:30:02,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:30:02,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 11:30:02,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120374444] [2023-12-20 11:30:02,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:30:02,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 11:30:02,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:30:02,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 11:30:02,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-20 11:30:02,779 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) [2023-12-20 11:30:03,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:30:03,744 INFO L93 Difference]: Finished difference Result 4754 states and 8887 transitions. [2023-12-20 11:30:03,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-20 11:30:03,746 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 [2023-12-20 11:30:03,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:30:03,766 INFO L225 Difference]: With dead ends: 4754 [2023-12-20 11:30:03,767 INFO L226 Difference]: Without dead ends: 2485 [2023-12-20 11:30:03,775 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 [2023-12-20 11:30:03,777 INFO L413 NwaCegarLoop]: 4085 mSDtfsCounter, 4475 mSDsluCounter, 12233 mSDsCounter, 0 mSdLazyCounter, 797 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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 [2023-12-20 11:30:03,779 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] [2023-12-20 11:30:03,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2485 states. [2023-12-20 11:30:03,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2485 to 2404. [2023-12-20 11:30:03,872 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) [2023-12-20 11:30:03,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2404 states to 2404 states and 4397 transitions. [2023-12-20 11:30:03,881 INFO L78 Accepts]: Start accepts. Automaton has 2404 states and 4397 transitions. Word has length 72 [2023-12-20 11:30:03,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:30:03,881 INFO L495 AbstractCegarLoop]: Abstraction has 2404 states and 4397 transitions. [2023-12-20 11:30:03,882 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) [2023-12-20 11:30:03,882 INFO L276 IsEmpty]: Start isEmpty. Operand 2404 states and 4397 transitions. [2023-12-20 11:30:03,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-20 11:30:03,884 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:30:03,884 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] [2023-12-20 11:30:03,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 11:30:03,885 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:30:03,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:30:03,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1174500479, now seen corresponding path program 1 times [2023-12-20 11:30:03,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:30:03,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954661087] [2023-12-20 11:30:03,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:30:03,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:30:03,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:03,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:30:03,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:04,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-20 11:30:04,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:04,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-20 11:30:04,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:04,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-20 11:30:04,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:04,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-20 11:30:04,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:04,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 11:30:04,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:30:04,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954661087] [2023-12-20 11:30:04,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954661087] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:30:04,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:30:04,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:30:04,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543208266] [2023-12-20 11:30:04,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:30:04,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:30:04,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:30:04,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:30:04,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:30:04,064 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) [2023-12-20 11:30:05,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:30:05,233 INFO L93 Difference]: Finished difference Result 2937 states and 5237 transitions. [2023-12-20 11:30:05,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 11:30:05,234 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 [2023-12-20 11:30:05,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:30:05,244 INFO L225 Difference]: With dead ends: 2937 [2023-12-20 11:30:05,245 INFO L226 Difference]: Without dead ends: 2663 [2023-12-20 11:30:05,247 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 [2023-12-20 11:30:05,248 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, 0.1s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-20 11:30:05,249 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4477 Valid, 20675 Invalid, 1348 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [47 Valid, 1301 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-20 11:30:05,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2663 states. [2023-12-20 11:30:05,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2663 to 2532. [2023-12-20 11:30:05,314 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) [2023-12-20 11:30:05,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2532 states to 2532 states and 4592 transitions. [2023-12-20 11:30:05,323 INFO L78 Accepts]: Start accepts. Automaton has 2532 states and 4592 transitions. Word has length 72 [2023-12-20 11:30:05,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:30:05,323 INFO L495 AbstractCegarLoop]: Abstraction has 2532 states and 4592 transitions. [2023-12-20 11:30:05,323 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) [2023-12-20 11:30:05,324 INFO L276 IsEmpty]: Start isEmpty. Operand 2532 states and 4592 transitions. [2023-12-20 11:30:05,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-20 11:30:05,325 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:30:05,325 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] [2023-12-20 11:30:05,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 11:30:05,326 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:30:05,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:30:05,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1735200257, now seen corresponding path program 1 times [2023-12-20 11:30:05,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:30:05,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882248691] [2023-12-20 11:30:05,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:30:05,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:30:05,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:05,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:30:05,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:05,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-20 11:30:05,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:05,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-20 11:30:05,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:05,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-20 11:30:05,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:05,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-20 11:30:05,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:05,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 11:30:05,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:30:05,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882248691] [2023-12-20 11:30:05,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882248691] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:30:05,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:30:05,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:30:05,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939952825] [2023-12-20 11:30:05,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:30:05,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:30:05,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:30:05,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:30:05,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:30:05,503 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) [2023-12-20 11:30:06,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:30:06,595 INFO L93 Difference]: Finished difference Result 3398 states and 5954 transitions. [2023-12-20 11:30:06,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 11:30:06,596 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 [2023-12-20 11:30:06,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:30:06,606 INFO L225 Difference]: With dead ends: 3398 [2023-12-20 11:30:06,606 INFO L226 Difference]: Without dead ends: 2996 [2023-12-20 11:30:06,609 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 [2023-12-20 11:30:06,609 INFO L413 NwaCegarLoop]: 4171 mSDtfsCounter, 4465 mSDsluCounter, 16502 mSDsCounter, 0 mSdLazyCounter, 1297 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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 [2023-12-20 11:30:06,611 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] [2023-12-20 11:30:06,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2996 states. [2023-12-20 11:30:06,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2996 to 2789. [2023-12-20 11:30:06,705 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) [2023-12-20 11:30:06,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2789 states to 2789 states and 4987 transitions. [2023-12-20 11:30:06,714 INFO L78 Accepts]: Start accepts. Automaton has 2789 states and 4987 transitions. Word has length 72 [2023-12-20 11:30:06,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:30:06,716 INFO L495 AbstractCegarLoop]: Abstraction has 2789 states and 4987 transitions. [2023-12-20 11:30:06,716 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) [2023-12-20 11:30:06,716 INFO L276 IsEmpty]: Start isEmpty. Operand 2789 states and 4987 transitions. [2023-12-20 11:30:06,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-20 11:30:06,720 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:30:06,721 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] [2023-12-20 11:30:06,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 11:30:06,721 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:30:06,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:30:06,722 INFO L85 PathProgramCache]: Analyzing trace with hash -2126037953, now seen corresponding path program 1 times [2023-12-20 11:30:06,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:30:06,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748031795] [2023-12-20 11:30:06,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:30:06,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:30:06,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:06,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:30:06,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:06,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-20 11:30:06,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:06,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-20 11:30:06,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:06,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-20 11:30:06,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:06,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-20 11:30:06,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:06,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 11:30:06,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:30:06,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748031795] [2023-12-20 11:30:06,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748031795] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:30:06,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:30:06,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:30:06,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286736627] [2023-12-20 11:30:06,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:30:06,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:30:06,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:30:06,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:30:06,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:30:06,885 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) [2023-12-20 11:30:07,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:30:07,387 INFO L93 Difference]: Finished difference Result 3643 states and 6340 transitions. [2023-12-20 11:30:07,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 11:30:07,387 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 [2023-12-20 11:30:07,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:30:07,397 INFO L225 Difference]: With dead ends: 3643 [2023-12-20 11:30:07,398 INFO L226 Difference]: Without dead ends: 2984 [2023-12-20 11:30:07,401 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 [2023-12-20 11:30:07,401 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, 0.3s IncrementalHoareTripleChecker+Time [2023-12-20 11:30:07,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4413 Valid, 16194 Invalid, 646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 576 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-20 11:30:07,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2984 states. [2023-12-20 11:30:07,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2984 to 2789. [2023-12-20 11:30:07,460 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) [2023-12-20 11:30:07,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2789 states to 2789 states and 4982 transitions. [2023-12-20 11:30:07,470 INFO L78 Accepts]: Start accepts. Automaton has 2789 states and 4982 transitions. Word has length 72 [2023-12-20 11:30:07,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:30:07,471 INFO L495 AbstractCegarLoop]: Abstraction has 2789 states and 4982 transitions. [2023-12-20 11:30:07,471 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) [2023-12-20 11:30:07,471 INFO L276 IsEmpty]: Start isEmpty. Operand 2789 states and 4982 transitions. [2023-12-20 11:30:07,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-20 11:30:07,472 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:30:07,472 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] [2023-12-20 11:30:07,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 11:30:07,472 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:30:07,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:30:07,473 INFO L85 PathProgramCache]: Analyzing trace with hash -865120703, now seen corresponding path program 1 times [2023-12-20 11:30:07,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:30:07,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138397839] [2023-12-20 11:30:07,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:30:07,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:30:07,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:07,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:30:07,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:07,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-20 11:30:07,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:07,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-20 11:30:07,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:07,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-20 11:30:07,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:07,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-20 11:30:07,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:07,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 11:30:07,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:30:07,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138397839] [2023-12-20 11:30:07,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138397839] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:30:07,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:30:07,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:30:07,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190141557] [2023-12-20 11:30:07,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:30:07,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:30:07,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:30:07,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:30:07,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:30:07,609 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) [2023-12-20 11:30:08,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:30:08,599 INFO L93 Difference]: Finished difference Result 4456 states and 7571 transitions. [2023-12-20 11:30:08,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 11:30:08,599 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 [2023-12-20 11:30:08,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:30:08,611 INFO L225 Difference]: With dead ends: 4456 [2023-12-20 11:30:08,611 INFO L226 Difference]: Without dead ends: 3797 [2023-12-20 11:30:08,613 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 [2023-12-20 11:30:08,614 INFO L413 NwaCegarLoop]: 4169 mSDtfsCounter, 4572 mSDsluCounter, 16497 mSDsCounter, 0 mSdLazyCounter, 1254 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4586 SdHoareTripleChecker+Valid, 20666 SdHoareTripleChecker+Invalid, 1306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-20 11:30:08,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4586 Valid, 20666 Invalid, 1306 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [52 Valid, 1254 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-20 11:30:08,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3797 states. [2023-12-20 11:30:08,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3797 to 3300. [2023-12-20 11:30:08,686 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) [2023-12-20 11:30:08,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3300 states to 3300 states and 5767 transitions. [2023-12-20 11:30:08,693 INFO L78 Accepts]: Start accepts. Automaton has 3300 states and 5767 transitions. Word has length 72 [2023-12-20 11:30:08,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:30:08,693 INFO L495 AbstractCegarLoop]: Abstraction has 3300 states and 5767 transitions. [2023-12-20 11:30:08,693 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) [2023-12-20 11:30:08,694 INFO L276 IsEmpty]: Start isEmpty. Operand 3300 states and 5767 transitions. [2023-12-20 11:30:08,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-20 11:30:08,695 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:30:08,695 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] [2023-12-20 11:30:08,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 11:30:08,695 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:30:08,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:30:08,695 INFO L85 PathProgramCache]: Analyzing trace with hash -824445953, now seen corresponding path program 1 times [2023-12-20 11:30:08,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:30:08,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895218078] [2023-12-20 11:30:08,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:30:08,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:30:08,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:08,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:30:08,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:08,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-20 11:30:08,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:08,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-20 11:30:08,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:08,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-20 11:30:08,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:08,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-20 11:30:08,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:08,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 11:30:08,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:30:08,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895218078] [2023-12-20 11:30:08,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895218078] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:30:08,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:30:08,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:30:08,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28291680] [2023-12-20 11:30:08,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:30:08,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:30:08,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:30:08,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:30:08,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:30:08,808 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) [2023-12-20 11:30:09,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:30:09,942 INFO L93 Difference]: Finished difference Result 6297 states and 10420 transitions. [2023-12-20 11:30:09,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 11:30:09,942 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 [2023-12-20 11:30:09,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:30:09,959 INFO L225 Difference]: With dead ends: 6297 [2023-12-20 11:30:09,959 INFO L226 Difference]: Without dead ends: 5127 [2023-12-20 11:30:09,964 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 [2023-12-20 11:30:09,965 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 [2023-12-20 11:30:09,965 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] [2023-12-20 11:30:09,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5127 states. [2023-12-20 11:30:10,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5127 to 4238. [2023-12-20 11:30:10,067 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) [2023-12-20 11:30:10,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4238 states to 4238 states and 7203 transitions. [2023-12-20 11:30:10,076 INFO L78 Accepts]: Start accepts. Automaton has 4238 states and 7203 transitions. Word has length 72 [2023-12-20 11:30:10,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:30:10,077 INFO L495 AbstractCegarLoop]: Abstraction has 4238 states and 7203 transitions. [2023-12-20 11:30:10,077 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) [2023-12-20 11:30:10,077 INFO L276 IsEmpty]: Start isEmpty. Operand 4238 states and 7203 transitions. [2023-12-20 11:30:10,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-20 11:30:10,079 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:30:10,079 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] [2023-12-20 11:30:10,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 11:30:10,079 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:30:10,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:30:10,079 INFO L85 PathProgramCache]: Analyzing trace with hash 562339457, now seen corresponding path program 1 times [2023-12-20 11:30:10,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:30:10,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968251810] [2023-12-20 11:30:10,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:30:10,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:30:10,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:10,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:30:10,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:10,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-20 11:30:10,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:10,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-20 11:30:10,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:10,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-20 11:30:10,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:10,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-20 11:30:10,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:10,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 11:30:10,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:30:10,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968251810] [2023-12-20 11:30:10,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968251810] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:30:10,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:30:10,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 11:30:10,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117362396] [2023-12-20 11:30:10,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:30:10,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 11:30:10,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:30:10,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 11:30:10,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:30:10,163 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) [2023-12-20 11:30:11,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:30:11,274 INFO L93 Difference]: Finished difference Result 9417 states and 15228 transitions. [2023-12-20 11:30:11,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 11:30:11,274 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 [2023-12-20 11:30:11,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:30:11,312 INFO L225 Difference]: With dead ends: 9417 [2023-12-20 11:30:11,312 INFO L226 Difference]: Without dead ends: 7309 [2023-12-20 11:30:11,318 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 [2023-12-20 11:30:11,319 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, 0.8s IncrementalHoareTripleChecker+Time [2023-12-20 11:30:11,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4476 Valid, 20666 Invalid, 1263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 1210 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-20 11:30:11,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7309 states. [2023-12-20 11:30:11,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7309 to 6209. [2023-12-20 11:30:11,473 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) [2023-12-20 11:30:11,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6209 states to 6209 states and 10303 transitions. [2023-12-20 11:30:11,487 INFO L78 Accepts]: Start accepts. Automaton has 6209 states and 10303 transitions. Word has length 72 [2023-12-20 11:30:11,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:30:11,487 INFO L495 AbstractCegarLoop]: Abstraction has 6209 states and 10303 transitions. [2023-12-20 11:30:11,488 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) [2023-12-20 11:30:11,488 INFO L276 IsEmpty]: Start isEmpty. Operand 6209 states and 10303 transitions. [2023-12-20 11:30:11,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-20 11:30:11,492 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:30:11,492 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] [2023-12-20 11:30:11,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-20 11:30:11,492 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:30:11,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:30:11,492 INFO L85 PathProgramCache]: Analyzing trace with hash 1006240131, now seen corresponding path program 1 times [2023-12-20 11:30:11,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:30:11,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947129272] [2023-12-20 11:30:11,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:30:11,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:30:11,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:11,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:30:11,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:11,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-20 11:30:11,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:11,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-20 11:30:11,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:11,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-20 11:30:11,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:11,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-20 11:30:11,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:11,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 11:30:11,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:30:11,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947129272] [2023-12-20 11:30:11,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947129272] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:30:11,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 11:30:11,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 11:30:11,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109079051] [2023-12-20 11:30:11,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:30:11,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 11:30:11,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:30:11,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 11:30:11,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-20 11:30:11,563 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) [2023-12-20 11:30:12,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:30:12,462 INFO L93 Difference]: Finished difference Result 13635 states and 21859 transitions. [2023-12-20 11:30:12,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-20 11:30:12,462 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 [2023-12-20 11:30:12,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:30:12,488 INFO L225 Difference]: With dead ends: 13635 [2023-12-20 11:30:12,488 INFO L226 Difference]: Without dead ends: 9557 [2023-12-20 11:30:12,502 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 [2023-12-20 11:30:12,503 INFO L413 NwaCegarLoop]: 4189 mSDtfsCounter, 4620 mSDsluCounter, 12266 mSDsCounter, 0 mSdLazyCounter, 1032 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.6s IncrementalHoareTripleChecker+Time [2023-12-20 11:30:12,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4647 Valid, 16455 Invalid, 1107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1032 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-20 11:30:12,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9557 states. [2023-12-20 11:30:12,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9557 to 8223. [2023-12-20 11:30:12,715 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) [2023-12-20 11:30:12,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8223 states to 8223 states and 13286 transitions. [2023-12-20 11:30:12,732 INFO L78 Accepts]: Start accepts. Automaton has 8223 states and 13286 transitions. Word has length 72 [2023-12-20 11:30:12,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:30:12,733 INFO L495 AbstractCegarLoop]: Abstraction has 8223 states and 13286 transitions. [2023-12-20 11:30:12,733 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) [2023-12-20 11:30:12,733 INFO L276 IsEmpty]: Start isEmpty. Operand 8223 states and 13286 transitions. [2023-12-20 11:30:12,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-12-20 11:30:12,830 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:30:12,831 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] [2023-12-20 11:30:12,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-20 11:30:12,831 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:30:12,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:30:12,833 INFO L85 PathProgramCache]: Analyzing trace with hash 1971442477, now seen corresponding path program 1 times [2023-12-20 11:30:12,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:30:12,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661868073] [2023-12-20 11:30:12,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:30:12,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:30:12,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:12,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:30:12,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:12,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-20 11:30:12,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:12,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-20 11:30:12,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:12,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-20 11:30:12,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:12,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-20 11:30:12,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:12,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-20 11:30:12,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:12,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-20 11:30:12,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:12,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-12-20 11:30:12,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:12,945 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-20 11:30:12,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:30:12,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661868073] [2023-12-20 11:30:12,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661868073] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 11:30:12,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1701090118] [2023-12-20 11:30:12,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:30:12,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 11:30:12,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 11:30:12,950 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 11:30:12,954 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-20 11:30:13,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:13,091 INFO L262 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 11:30:13,099 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 11:30:13,173 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-20 11:30:13,173 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 11:30:13,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1701090118] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:30:13,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 11:30:13,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-12-20 11:30:13,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743476450] [2023-12-20 11:30:13,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:30:13,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 11:30:13,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:30:13,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 11:30:13,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:30:13,175 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) [2023-12-20 11:30:13,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:30:13,530 INFO L93 Difference]: Finished difference Result 20254 states and 31860 transitions. [2023-12-20 11:30:13,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 11:30:13,531 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 [2023-12-20 11:30:13,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:30:13,578 INFO L225 Difference]: With dead ends: 20254 [2023-12-20 11:30:13,578 INFO L226 Difference]: Without dead ends: 14162 [2023-12-20 11:30:13,598 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 [2023-12-20 11:30:13,599 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 [2023-12-20 11:30:13,599 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] [2023-12-20 11:30:13,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14162 states. [2023-12-20 11:30:14,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14162 to 14108. [2023-12-20 11:30:14,161 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) [2023-12-20 11:30:14,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14108 states to 14108 states and 22183 transitions. [2023-12-20 11:30:14,195 INFO L78 Accepts]: Start accepts. Automaton has 14108 states and 22183 transitions. Word has length 116 [2023-12-20 11:30:14,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:30:14,195 INFO L495 AbstractCegarLoop]: Abstraction has 14108 states and 22183 transitions. [2023-12-20 11:30:14,195 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) [2023-12-20 11:30:14,196 INFO L276 IsEmpty]: Start isEmpty. Operand 14108 states and 22183 transitions. [2023-12-20 11:30:14,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-12-20 11:30:14,218 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:30:14,218 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] [2023-12-20 11:30:14,226 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-20 11:30:14,426 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 [2023-12-20 11:30:14,427 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:30:14,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:30:14,427 INFO L85 PathProgramCache]: Analyzing trace with hash -842546001, now seen corresponding path program 1 times [2023-12-20 11:30:14,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:30:14,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212570963] [2023-12-20 11:30:14,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:30:14,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:30:14,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:14,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:30:14,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:14,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-20 11:30:14,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:14,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-20 11:30:14,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:14,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-20 11:30:14,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:14,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-20 11:30:14,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:14,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-20 11:30:14,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:14,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-20 11:30:14,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:14,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-12-20 11:30:14,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:14,528 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-20 11:30:14,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:30:14,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212570963] [2023-12-20 11:30:14,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212570963] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 11:30:14,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [108774002] [2023-12-20 11:30:14,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:30:14,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 11:30:14,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 11:30:14,530 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) [2023-12-20 11:30:14,560 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-20 11:30:14,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:14,638 INFO L262 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 11:30:14,645 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 11:30:14,687 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-20 11:30:14,687 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 11:30:14,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [108774002] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:30:14,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 11:30:14,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-12-20 11:30:14,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064073326] [2023-12-20 11:30:14,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:30:14,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 11:30:14,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:30:14,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 11:30:14,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:30:14,690 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) [2023-12-20 11:30:15,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:30:15,379 INFO L93 Difference]: Finished difference Result 37757 states and 58509 transitions. [2023-12-20 11:30:15,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 11:30:15,379 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 [2023-12-20 11:30:15,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:30:15,563 INFO L225 Difference]: With dead ends: 37757 [2023-12-20 11:30:15,563 INFO L226 Difference]: Without dead ends: 25780 [2023-12-20 11:30:15,587 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 [2023-12-20 11:30:15,587 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 [2023-12-20 11:30:15,588 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] [2023-12-20 11:30:15,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25780 states. [2023-12-20 11:30:16,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25780 to 25676. [2023-12-20 11:30:16,265 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) [2023-12-20 11:30:16,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25676 states to 25676 states and 39599 transitions. [2023-12-20 11:30:16,326 INFO L78 Accepts]: Start accepts. Automaton has 25676 states and 39599 transitions. Word has length 116 [2023-12-20 11:30:16,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:30:16,327 INFO L495 AbstractCegarLoop]: Abstraction has 25676 states and 39599 transitions. [2023-12-20 11:30:16,327 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) [2023-12-20 11:30:16,327 INFO L276 IsEmpty]: Start isEmpty. Operand 25676 states and 39599 transitions. [2023-12-20 11:30:16,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-12-20 11:30:16,361 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:30:16,361 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] [2023-12-20 11:30:16,368 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-20 11:30:16,566 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 [2023-12-20 11:30:16,566 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:30:16,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:30:16,567 INFO L85 PathProgramCache]: Analyzing trace with hash -161057683, now seen corresponding path program 1 times [2023-12-20 11:30:16,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:30:16,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785819625] [2023-12-20 11:30:16,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:30:16,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:30:16,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:16,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:30:16,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:16,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-20 11:30:16,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:16,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-20 11:30:16,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:16,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-20 11:30:16,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:16,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-20 11:30:16,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:16,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-20 11:30:16,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:16,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-20 11:30:16,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:16,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-12-20 11:30:16,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:16,671 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-20 11:30:16,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:30:16,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785819625] [2023-12-20 11:30:16,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785819625] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 11:30:16,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1881869065] [2023-12-20 11:30:16,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:30:16,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 11:30:16,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 11:30:16,672 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) [2023-12-20 11:30:16,704 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-20 11:30:16,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:16,780 INFO L262 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 11:30:16,785 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 11:30:16,801 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-20 11:30:16,802 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 11:30:16,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1881869065] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:30:16,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 11:30:16,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-20 11:30:16,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60345414] [2023-12-20 11:30:16,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:30:16,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 11:30:16,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:30:16,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 11:30:16,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:30:16,803 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) [2023-12-20 11:30:18,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:30:18,011 INFO L93 Difference]: Finished difference Result 71415 states and 109971 transitions. [2023-12-20 11:30:18,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 11:30:18,012 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 [2023-12-20 11:30:18,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:30:18,167 INFO L225 Difference]: With dead ends: 71415 [2023-12-20 11:30:18,167 INFO L226 Difference]: Without dead ends: 47871 [2023-12-20 11:30:18,209 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 [2023-12-20 11:30:18,210 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 [2023-12-20 11:30:18,210 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] [2023-12-20 11:30:18,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47871 states. [2023-12-20 11:30:19,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47871 to 47871. [2023-12-20 11:30:19,941 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) [2023-12-20 11:30:20,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47871 states to 47871 states and 73380 transitions. [2023-12-20 11:30:20,081 INFO L78 Accepts]: Start accepts. Automaton has 47871 states and 73380 transitions. Word has length 116 [2023-12-20 11:30:20,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:30:20,082 INFO L495 AbstractCegarLoop]: Abstraction has 47871 states and 73380 transitions. [2023-12-20 11:30:20,082 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) [2023-12-20 11:30:20,082 INFO L276 IsEmpty]: Start isEmpty. Operand 47871 states and 73380 transitions. [2023-12-20 11:30:20,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-12-20 11:30:20,188 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:30:20,188 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] [2023-12-20 11:30:20,198 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-20 11:30:20,394 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 [2023-12-20 11:30:20,395 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:30:20,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:30:20,395 INFO L85 PathProgramCache]: Analyzing trace with hash 858256470, now seen corresponding path program 1 times [2023-12-20 11:30:20,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:30:20,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193752559] [2023-12-20 11:30:20,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:30:20,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:30:20,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:20,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:30:20,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:20,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-20 11:30:20,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:20,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-20 11:30:20,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:20,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-20 11:30:20,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:20,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-20 11:30:20,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:20,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-20 11:30:20,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:20,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-20 11:30:20,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:20,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-12-20 11:30:20,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:20,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-20 11:30:20,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:20,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-12-20 11:30:20,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:20,497 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-12-20 11:30:20,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:30:20,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193752559] [2023-12-20 11:30:20,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193752559] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 11:30:20,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1812146926] [2023-12-20 11:30:20,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:30:20,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 11:30:20,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 11:30:20,514 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) [2023-12-20 11:30:20,538 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-20 11:30:20,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:20,634 INFO L262 TraceCheckSpWp]: Trace formula consists of 592 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 11:30:20,639 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 11:30:20,721 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-20 11:30:20,721 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 11:30:20,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1812146926] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:30:20,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 11:30:20,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-12-20 11:30:20,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416024305] [2023-12-20 11:30:20,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:30:20,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 11:30:20,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:30:20,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 11:30:20,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:30:20,724 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) [2023-12-20 11:30:23,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:30:23,332 INFO L93 Difference]: Finished difference Result 137299 states and 210371 transitions. [2023-12-20 11:30:23,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 11:30:23,332 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 [2023-12-20 11:30:23,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:30:23,668 INFO L225 Difference]: With dead ends: 137299 [2023-12-20 11:30:23,668 INFO L226 Difference]: Without dead ends: 91565 [2023-12-20 11:30:23,764 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 [2023-12-20 11:30:23,765 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 [2023-12-20 11:30:23,765 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] [2023-12-20 11:30:23,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91565 states. [2023-12-20 11:30:26,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91565 to 91161. [2023-12-20 11:30:26,936 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) [2023-12-20 11:30:27,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91161 states to 91161 states and 138356 transitions. [2023-12-20 11:30:27,237 INFO L78 Accepts]: Start accepts. Automaton has 91161 states and 138356 transitions. Word has length 149 [2023-12-20 11:30:27,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:30:27,237 INFO L495 AbstractCegarLoop]: Abstraction has 91161 states and 138356 transitions. [2023-12-20 11:30:27,237 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) [2023-12-20 11:30:27,237 INFO L276 IsEmpty]: Start isEmpty. Operand 91161 states and 138356 transitions. [2023-12-20 11:30:27,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2023-12-20 11:30:27,462 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:30:27,462 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] [2023-12-20 11:30:27,467 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-20 11:30:27,667 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 [2023-12-20 11:30:27,667 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:30:27,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:30:27,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1665344232, now seen corresponding path program 1 times [2023-12-20 11:30:27,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:30:27,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562461171] [2023-12-20 11:30:27,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:30:27,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:30:27,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:27,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:30:27,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:27,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-20 11:30:27,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:27,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-20 11:30:27,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:27,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-20 11:30:27,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:27,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-20 11:30:27,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:27,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-20 11:30:27,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:27,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-20 11:30:27,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:27,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-20 11:30:27,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:27,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-12-20 11:30:27,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:27,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-20 11:30:27,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:27,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-12-20 11:30:27,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:27,784 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-12-20 11:30:27,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:30:27,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562461171] [2023-12-20 11:30:27,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562461171] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 11:30:27,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1003360058] [2023-12-20 11:30:27,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:30:27,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 11:30:27,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 11:30:27,785 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) [2023-12-20 11:30:27,808 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-20 11:30:27,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:27,909 INFO L262 TraceCheckSpWp]: Trace formula consists of 634 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 11:30:27,913 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 11:30:27,986 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-20 11:30:27,986 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 11:30:27,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1003360058] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:30:27,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 11:30:27,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-20 11:30:27,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833028658] [2023-12-20 11:30:27,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:30:27,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 11:30:27,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:30:27,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 11:30:27,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:30:27,988 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) [2023-12-20 11:30:30,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:30:30,483 INFO L93 Difference]: Finished difference Result 139099 states and 211689 transitions. [2023-12-20 11:30:30,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 11:30:30,484 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 [2023-12-20 11:30:30,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:30:30,703 INFO L225 Difference]: With dead ends: 139099 [2023-12-20 11:30:30,703 INFO L226 Difference]: Without dead ends: 77541 [2023-12-20 11:30:30,801 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 [2023-12-20 11:30:30,801 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 [2023-12-20 11:30:30,802 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] [2023-12-20 11:30:30,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77541 states. [2023-12-20 11:30:33,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77541 to 55773. [2023-12-20 11:30:33,184 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) [2023-12-20 11:30:33,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55773 states to 55773 states and 81356 transitions. [2023-12-20 11:30:33,320 INFO L78 Accepts]: Start accepts. Automaton has 55773 states and 81356 transitions. Word has length 166 [2023-12-20 11:30:33,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:30:33,321 INFO L495 AbstractCegarLoop]: Abstraction has 55773 states and 81356 transitions. [2023-12-20 11:30:33,321 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) [2023-12-20 11:30:33,321 INFO L276 IsEmpty]: Start isEmpty. Operand 55773 states and 81356 transitions. [2023-12-20 11:30:33,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2023-12-20 11:30:33,429 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:30:33,429 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] [2023-12-20 11:30:33,439 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-20 11:30:33,636 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 [2023-12-20 11:30:33,637 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:30:33,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:30:33,638 INFO L85 PathProgramCache]: Analyzing trace with hash -1063735897, now seen corresponding path program 1 times [2023-12-20 11:30:33,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:30:33,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678515150] [2023-12-20 11:30:33,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:30:33,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:30:33,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:33,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:30:33,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:33,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-20 11:30:33,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:33,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-20 11:30:33,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:33,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-20 11:30:33,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:33,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-20 11:30:33,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:33,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-20 11:30:33,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:33,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-20 11:30:33,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:33,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-20 11:30:33,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:33,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-12-20 11:30:33,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:33,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-20 11:30:33,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:33,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-12-20 11:30:33,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:33,763 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-12-20 11:30:33,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:30:33,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678515150] [2023-12-20 11:30:33,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678515150] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 11:30:33,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2050590968] [2023-12-20 11:30:33,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:30:33,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 11:30:33,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 11:30:33,764 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) [2023-12-20 11:30:33,767 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-20 11:30:33,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:33,875 INFO L262 TraceCheckSpWp]: Trace formula consists of 628 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-20 11:30:33,877 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 11:30:33,920 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-20 11:30:33,921 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 11:30:33,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2050590968] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:30:33,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 11:30:33,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-20 11:30:33,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9627515] [2023-12-20 11:30:33,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:30:33,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 11:30:33,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:30:33,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 11:30:33,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:30:33,922 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) [2023-12-20 11:30:36,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:30:36,199 INFO L93 Difference]: Finished difference Result 127117 states and 189540 transitions. [2023-12-20 11:30:36,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 11:30:36,200 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 [2023-12-20 11:30:36,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:30:36,434 INFO L225 Difference]: With dead ends: 127117 [2023-12-20 11:30:36,434 INFO L226 Difference]: Without dead ends: 73483 [2023-12-20 11:30:36,536 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 [2023-12-20 11:30:36,537 INFO L413 NwaCegarLoop]: 4165 mSDtfsCounter, 4133 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 11:30:36,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4133 Valid, 4222 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 11:30:36,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73483 states. [2023-12-20 11:30:39,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73483 to 73311. [2023-12-20 11:30:39,251 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) [2023-12-20 11:30:39,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73311 states to 73311 states and 107857 transitions. [2023-12-20 11:30:39,440 INFO L78 Accepts]: Start accepts. Automaton has 73311 states and 107857 transitions. Word has length 166 [2023-12-20 11:30:39,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:30:39,440 INFO L495 AbstractCegarLoop]: Abstraction has 73311 states and 107857 transitions. [2023-12-20 11:30:39,440 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) [2023-12-20 11:30:39,441 INFO L276 IsEmpty]: Start isEmpty. Operand 73311 states and 107857 transitions. [2023-12-20 11:30:39,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2023-12-20 11:30:39,573 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:30:39,573 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] [2023-12-20 11:30:39,588 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-20 11:30:39,778 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 [2023-12-20 11:30:39,778 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:30:39,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:30:39,779 INFO L85 PathProgramCache]: Analyzing trace with hash -502799383, now seen corresponding path program 1 times [2023-12-20 11:30:39,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:30:39,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130900902] [2023-12-20 11:30:39,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:30:39,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:30:39,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:39,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:30:39,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:39,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-20 11:30:40,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:40,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-20 11:30:40,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:40,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-20 11:30:40,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:40,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-20 11:30:40,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:40,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-20 11:30:40,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:40,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-20 11:30:40,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:40,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-20 11:30:40,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:40,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-12-20 11:30:40,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:40,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-20 11:30:40,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:40,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-12-20 11:30:40,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:40,064 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-12-20 11:30:40,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:30:40,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130900902] [2023-12-20 11:30:40,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130900902] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 11:30:40,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2261845] [2023-12-20 11:30:40,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:30:40,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 11:30:40,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 11:30:40,081 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) [2023-12-20 11:30:40,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-20 11:30:40,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:40,195 INFO L262 TraceCheckSpWp]: Trace formula consists of 622 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-20 11:30:40,199 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 11:30:40,237 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-12-20 11:30:40,237 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 11:30:40,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2261845] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:30:40,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 11:30:40,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-20 11:30:40,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207559084] [2023-12-20 11:30:40,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:30:40,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 11:30:40,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:30:40,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 11:30:40,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:30:40,238 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) [2023-12-20 11:30:42,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:30:42,527 INFO L93 Difference]: Finished difference Result 125567 states and 183328 transitions. [2023-12-20 11:30:42,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 11:30:42,528 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 [2023-12-20 11:30:42,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:30:42,771 INFO L225 Difference]: With dead ends: 125567 [2023-12-20 11:30:42,771 INFO L226 Difference]: Without dead ends: 76731 [2023-12-20 11:30:42,853 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 [2023-12-20 11:30:42,853 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 [2023-12-20 11:30:42,853 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] [2023-12-20 11:30:42,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76731 states. [2023-12-20 11:30:45,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76731 to 76471. [2023-12-20 11:30:45,547 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) [2023-12-20 11:30:45,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76471 states to 76471 states and 111037 transitions. [2023-12-20 11:30:45,729 INFO L78 Accepts]: Start accepts. Automaton has 76471 states and 111037 transitions. Word has length 166 [2023-12-20 11:30:45,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:30:45,729 INFO L495 AbstractCegarLoop]: Abstraction has 76471 states and 111037 transitions. [2023-12-20 11:30:45,729 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) [2023-12-20 11:30:45,729 INFO L276 IsEmpty]: Start isEmpty. Operand 76471 states and 111037 transitions. [2023-12-20 11:30:45,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2023-12-20 11:30:45,853 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:30:45,853 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] [2023-12-20 11:30:45,867 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-20 11:30:46,059 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 [2023-12-20 11:30:46,060 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:30:46,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:30:46,061 INFO L85 PathProgramCache]: Analyzing trace with hash -200593914, now seen corresponding path program 1 times [2023-12-20 11:30:46,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:30:46,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754576686] [2023-12-20 11:30:46,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:30:46,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:30:46,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:46,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:30:46,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:46,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-20 11:30:46,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:46,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-20 11:30:46,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:46,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-20 11:30:46,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:46,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-20 11:30:46,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:46,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-20 11:30:46,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:46,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-20 11:30:46,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:46,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-20 11:30:46,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:46,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-12-20 11:30:46,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:46,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-20 11:30:46,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:46,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-12-20 11:30:46,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:46,160 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-12-20 11:30:46,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:30:46,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754576686] [2023-12-20 11:30:46,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754576686] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 11:30:46,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1537138869] [2023-12-20 11:30:46,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:30:46,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 11:30:46,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 11:30:46,161 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) [2023-12-20 11:30:46,164 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-20 11:30:46,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:46,271 INFO L262 TraceCheckSpWp]: Trace formula consists of 623 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 11:30:46,273 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 11:30:46,291 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-20 11:30:46,291 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 11:30:46,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1537138869] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:30:46,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 11:30:46,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-20 11:30:46,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236410200] [2023-12-20 11:30:46,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:30:46,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 11:30:46,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:30:46,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 11:30:46,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:30:46,292 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) [2023-12-20 11:30:50,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:30:50,849 INFO L93 Difference]: Finished difference Result 222761 states and 325689 transitions. [2023-12-20 11:30:50,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 11:30:50,850 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 [2023-12-20 11:30:50,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:30:51,373 INFO L225 Difference]: With dead ends: 222761 [2023-12-20 11:30:51,373 INFO L226 Difference]: Without dead ends: 148433 [2023-12-20 11:30:51,594 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 [2023-12-20 11:30:51,595 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 [2023-12-20 11:30:51,595 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] [2023-12-20 11:30:51,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148433 states. [2023-12-20 11:30:56,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148433 to 148309. [2023-12-20 11:30:56,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148309 states, 129038 states have (on average 1.4057021962522667) internal successors, (181389), 129964 states have internal predecessors, (181389), 10407 states have call successors, (10407), 8041 states have call predecessors, (10407), 8862 states have return successors, (25491), 10367 states have call predecessors, (25491), 10405 states have call successors, (25491) [2023-12-20 11:30:57,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148309 states to 148309 states and 217287 transitions. [2023-12-20 11:30:57,212 INFO L78 Accepts]: Start accepts. Automaton has 148309 states and 217287 transitions. Word has length 167 [2023-12-20 11:30:57,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:30:57,212 INFO L495 AbstractCegarLoop]: Abstraction has 148309 states and 217287 transitions. [2023-12-20 11:30:57,212 INFO L496 AbstractCegarLoop]: INTERPOLANT 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) [2023-12-20 11:30:57,213 INFO L276 IsEmpty]: Start isEmpty. Operand 148309 states and 217287 transitions. [2023-12-20 11:30:57,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2023-12-20 11:30:57,732 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 11:30:57,732 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, 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, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 11:30:57,741 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-20 11:30:57,936 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 [2023-12-20 11:30:57,939 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 11:30:57,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 11:30:57,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1832539457, now seen corresponding path program 1 times [2023-12-20 11:30:57,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 11:30:57,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127519877] [2023-12-20 11:30:57,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:30:57,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 11:30:57,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:57,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 11:30:57,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:57,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-20 11:30:57,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:57,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-20 11:30:57,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:58,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-20 11:30:58,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:58,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-20 11:30:58,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:58,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-20 11:30:58,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:58,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-20 11:30:58,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:58,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-20 11:30:58,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:58,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-12-20 11:30:58,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:58,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-20 11:30:58,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:58,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-12-20 11:30:58,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:58,036 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2023-12-20 11:30:58,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 11:30:58,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127519877] [2023-12-20 11:30:58,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127519877] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 11:30:58,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2064377746] [2023-12-20 11:30:58,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 11:30:58,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 11:30:58,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 11:30:58,041 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 11:30:58,060 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-20 11:30:58,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 11:30:58,160 INFO L262 TraceCheckSpWp]: Trace formula consists of 629 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 11:30:58,163 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 11:30:58,240 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-12-20 11:30:58,240 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 11:30:58,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2064377746] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 11:30:58,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 11:30:58,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-20 11:30:58,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120431016] [2023-12-20 11:30:58,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 11:30:58,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 11:30:58,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 11:30:58,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 11:30:58,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 11:30:58,241 INFO L87 Difference]: Start difference. First operand 148309 states and 217287 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 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) [2023-12-20 11:31:02,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 11:31:02,445 INFO L93 Difference]: Finished difference Result 239937 states and 358198 transitions. [2023-12-20 11:31:02,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 11:31:02,446 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 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 167 [2023-12-20 11:31:02,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 11:31:02,860 INFO L225 Difference]: With dead ends: 239937 [2023-12-20 11:31:02,860 INFO L226 Difference]: Without dead ends: 122905 [2023-12-20 11:31:03,126 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 [2023-12-20 11:31:03,128 INFO L413 NwaCegarLoop]: 4154 mSDtfsCounter, 4108 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4108 SdHoareTripleChecker+Valid, 4188 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 [2023-12-20 11:31:03,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4108 Valid, 4188 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 11:31:03,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122905 states. [2023-12-20 11:31:06,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122905 to 88801. [2023-12-20 11:31:06,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88801 states, 77428 states have (on average 1.3731854109624426) internal successors, (106323), 77910 states have internal predecessors, (106323), 6135 states have call successors, (6135), 4809 states have call predecessors, (6135), 5236 states have return successors, (13131), 6113 states have call predecessors, (13131), 6133 states have call successors, (13131) [2023-12-20 11:31:06,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88801 states to 88801 states and 125589 transitions. [2023-12-20 11:31:06,738 INFO L78 Accepts]: Start accepts. Automaton has 88801 states and 125589 transitions. Word has length 167 [2023-12-20 11:31:06,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 11:31:06,739 INFO L495 AbstractCegarLoop]: Abstraction has 88801 states and 125589 transitions. [2023-12-20 11:31:06,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 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) [2023-12-20 11:31:06,739 INFO L276 IsEmpty]: Start isEmpty. Operand 88801 states and 125589 transitions.