/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_label41+token_ring.11.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 00:32:17,542 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 00:32:17,605 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-16 00:32:17,608 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 00:32:17,608 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 00:32:17,629 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 00:32:17,630 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 00:32:17,630 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 00:32:17,630 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 00:32:17,633 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 00:32:17,633 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 00:32:17,634 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 00:32:17,634 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 00:32:17,635 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 00:32:17,635 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 00:32:17,635 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 00:32:17,636 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 00:32:17,636 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 00:32:17,636 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 00:32:17,637 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 00:32:17,637 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 00:32:17,640 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 00:32:17,640 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 00:32:17,640 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 00:32:17,640 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 00:32:17,640 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 00:32:17,641 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 00:32:17,641 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 00:32:17,641 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 00:32:17,641 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 00:32:17,642 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 00:32:17,642 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 00:32:17,642 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 00:32:17,642 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 00:32:17,642 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 00:32:17,643 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 00:32:17,643 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 00:32:17,643 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 00:32:17,643 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 00:32:17,643 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 00:32:17,643 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 00:32:17,643 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 00:32:17,643 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 00:32:17,643 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-16 00:32:17,842 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 00:32:17,859 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 00:32:17,860 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 00:32:17,861 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 00:32:17,861 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 00:32:17,862 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/Problem05_label41+token_ring.11.cil-2.c [2023-12-16 00:32:18,829 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 00:32:19,311 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 00:32:19,312 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label41+token_ring.11.cil-2.c [2023-12-16 00:32:19,355 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e4375589/2b11fb713b1144ab9f1b569e9a66a3a3/FLAG0a1483574 [2023-12-16 00:32:19,367 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e4375589/2b11fb713b1144ab9f1b569e9a66a3a3 [2023-12-16 00:32:19,369 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 00:32:19,370 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 00:32:19,372 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 00:32:19,372 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 00:32:19,375 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 00:32:19,375 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 12:32:19" (1/1) ... [2023-12-16 00:32:19,376 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ba43513 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:32:19, skipping insertion in model container [2023-12-16 00:32:19,376 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 12:32:19" (1/1) ... [2023-12-16 00:32:19,542 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 00:32:20,632 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_label41+token_ring.11.cil-2.c[376251,376264] [2023-12-16 00:32:20,655 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_label41+token_ring.11.cil-2.c[383339,383352] [2023-12-16 00:32:20,854 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 00:32:20,864 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 00:32:21,410 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_label41+token_ring.11.cil-2.c[376251,376264] [2023-12-16 00:32:21,418 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_label41+token_ring.11.cil-2.c[383339,383352] [2023-12-16 00:32:21,449 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 00:32:21,492 INFO L206 MainTranslator]: Completed translation [2023-12-16 00:32:21,493 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:32:21 WrapperNode [2023-12-16 00:32:21,493 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 00:32:21,494 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 00:32:21,494 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 00:32:21,494 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 00:32:21,499 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:32:21" (1/1) ... [2023-12-16 00:32:21,553 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:32:21" (1/1) ... [2023-12-16 00:32:21,835 INFO L138 Inliner]: procedures = 66, calls = 74, calls flagged for inlining = 44, calls inlined = 44, statements flattened = 13173 [2023-12-16 00:32:21,835 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 00:32:21,836 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 00:32:21,836 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 00:32:21,836 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 00:32:21,843 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:32:21" (1/1) ... [2023-12-16 00:32:21,844 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:32:21" (1/1) ... [2023-12-16 00:32:21,976 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:32:21" (1/1) ... [2023-12-16 00:32:22,036 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]. [2023-12-16 00:32:22,036 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:32:21" (1/1) ... [2023-12-16 00:32:22,036 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:32:21" (1/1) ... [2023-12-16 00:32:22,140 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:32:21" (1/1) ... [2023-12-16 00:32:22,176 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:32:21" (1/1) ... [2023-12-16 00:32:22,200 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:32:21" (1/1) ... [2023-12-16 00:32:22,220 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:32:21" (1/1) ... [2023-12-16 00:32:22,318 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 00:32:22,319 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 00:32:22,319 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 00:32:22,319 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 00:32:22,320 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:32:21" (1/1) ... [2023-12-16 00:32:22,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 00:32:22,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:32:22,343 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) [2023-12-16 00:32:22,350 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 [2023-12-16 00:32:22,364 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 00:32:22,364 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-12-16 00:32:22,364 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-12-16 00:32:22,364 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-16 00:32:22,364 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-16 00:32:22,364 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-12-16 00:32:22,365 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-12-16 00:32:22,365 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-12-16 00:32:22,365 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-12-16 00:32:22,365 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-12-16 00:32:22,365 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-12-16 00:32:22,365 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-12-16 00:32:22,365 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-12-16 00:32:22,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 00:32:22,365 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 00:32:22,365 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 00:32:22,459 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 00:32:22,462 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 00:32:28,265 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 00:32:28,364 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 00:32:28,364 INFO L309 CfgBuilder]: Removed 15 assume(true) statements. [2023-12-16 00:32:28,364 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 12:32:28 BoogieIcfgContainer [2023-12-16 00:32:28,365 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 00:32:28,367 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 00:32:28,367 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 00:32:28,370 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 00:32:28,370 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 12:32:19" (1/3) ... [2023-12-16 00:32:28,371 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1693c34e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 12:32:28, skipping insertion in model container [2023-12-16 00:32:28,371 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:32:21" (2/3) ... [2023-12-16 00:32:28,372 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1693c34e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 12:32:28, skipping insertion in model container [2023-12-16 00:32:28,372 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 12:32:28" (3/3) ... [2023-12-16 00:32:28,373 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label41+token_ring.11.cil-2.c [2023-12-16 00:32:28,385 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 00:32:28,386 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-16 00:32:28,444 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 00:32:28,448 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;@3b70f387, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 00:32:28,448 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-16 00:32:28,457 INFO L276 IsEmpty]: Start isEmpty. Operand has 2448 states, 2414 states have (on average 1.876553438276719) internal successors, (4530), 2417 states have internal predecessors, (4530), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-12-16 00:32:28,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-16 00:32:28,470 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:32:28,470 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:32:28,471 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:32:28,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:32:28,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1361111705, now seen corresponding path program 1 times [2023-12-16 00:32:28,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:32:28,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370393546] [2023-12-16 00:32:28,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:32:28,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:32:28,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:32:28,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 00:32:28,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:32:28,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-16 00:32:28,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:32:28,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-16 00:32:28,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:32:28,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-16 00:32:28,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:32:28,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-16 00:32:28,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:32:28,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:32:28,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:32:28,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370393546] [2023-12-16 00:32:28,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370393546] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:32:28,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:32:28,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 00:32:28,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428124558] [2023-12-16 00:32:28,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:32:28,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 00:32:28,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:32:29,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 00:32:29,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 00:32:29,009 INFO L87 Difference]: Start difference. First operand has 2448 states, 2414 states have (on average 1.876553438276719) internal successors, (4530), 2417 states have internal predecessors, (4530), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) Second operand has 5 states, 5 states have (on average 28.2) internal successors, (141), 3 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 00:32:30,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:32:30,553 INFO L93 Difference]: Finished difference Result 5006 states and 9354 transitions. [2023-12-16 00:32:30,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 00:32:30,556 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 3 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 151 [2023-12-16 00:32:30,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:32:30,571 INFO L225 Difference]: With dead ends: 5006 [2023-12-16 00:32:30,572 INFO L226 Difference]: Without dead ends: 2564 [2023-12-16 00:32:30,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-16 00:32:30,580 INFO L413 NwaCegarLoop]: 4238 mSDtfsCounter, 902 mSDsluCounter, 12182 mSDsCounter, 0 mSdLazyCounter, 992 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 925 SdHoareTripleChecker+Valid, 16420 SdHoareTripleChecker+Invalid, 1046 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 992 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-16 00:32:30,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [925 Valid, 16420 Invalid, 1046 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [54 Valid, 992 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-16 00:32:30,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2564 states. [2023-12-16 00:32:30,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2564 to 2444. [2023-12-16 00:32:30,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2444 states, 2411 states have (on average 1.838241393612609) internal successors, (4432), 2413 states have internal predecessors, (4432), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-12-16 00:32:30,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2444 states to 2444 states and 4482 transitions. [2023-12-16 00:32:30,683 INFO L78 Accepts]: Start accepts. Automaton has 2444 states and 4482 transitions. Word has length 151 [2023-12-16 00:32:30,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:32:30,683 INFO L495 AbstractCegarLoop]: Abstraction has 2444 states and 4482 transitions. [2023-12-16 00:32:30,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 3 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 00:32:30,684 INFO L276 IsEmpty]: Start isEmpty. Operand 2444 states and 4482 transitions. [2023-12-16 00:32:30,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-16 00:32:30,693 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:32:30,693 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:32:30,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-16 00:32:30,694 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:32:30,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:32:30,695 INFO L85 PathProgramCache]: Analyzing trace with hash 774771497, now seen corresponding path program 1 times [2023-12-16 00:32:30,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:32:30,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075260753] [2023-12-16 00:32:30,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:32:30,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:32:30,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:32:30,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 00:32:30,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:32:30,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-16 00:32:30,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:32:31,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-16 00:32:31,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:32:31,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-16 00:32:31,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:32:31,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-16 00:32:31,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:32:31,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:32:31,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:32:31,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075260753] [2023-12-16 00:32:31,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075260753] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:32:31,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:32:31,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 00:32:31,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70943433] [2023-12-16 00:32:31,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:32:31,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 00:32:31,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:32:31,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 00:32:31,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-16 00:32:31,049 INFO L87 Difference]: Start difference. First operand 2444 states and 4482 transitions. Second operand has 6 states, 6 states have (on average 23.5) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 00:32:33,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:32:33,499 INFO L93 Difference]: Finished difference Result 3313 states and 5934 transitions. [2023-12-16 00:32:33,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-16 00:32:33,500 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.5) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 151 [2023-12-16 00:32:33,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:32:33,510 INFO L225 Difference]: With dead ends: 3313 [2023-12-16 00:32:33,510 INFO L226 Difference]: Without dead ends: 3007 [2023-12-16 00:32:33,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-12-16 00:32:33,513 INFO L413 NwaCegarLoop]: 4252 mSDtfsCounter, 5325 mSDsluCounter, 12699 mSDsCounter, 0 mSdLazyCounter, 2175 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5343 SdHoareTripleChecker+Valid, 16951 SdHoareTripleChecker+Invalid, 2279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 2175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-16 00:32:33,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5343 Valid, 16951 Invalid, 2279 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [104 Valid, 2175 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-16 00:32:33,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3007 states. [2023-12-16 00:32:33,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3007 to 2768. [2023-12-16 00:32:33,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2768 states, 2708 states have (on average 1.8172082717872968) internal successors, (4921), 2711 states have internal predecessors, (4921), 45 states have call successors, (45), 12 states have call predecessors, (45), 13 states have return successors, (48), 45 states have call predecessors, (48), 45 states have call successors, (48) [2023-12-16 00:32:33,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2768 states to 2768 states and 5014 transitions. [2023-12-16 00:32:33,581 INFO L78 Accepts]: Start accepts. Automaton has 2768 states and 5014 transitions. Word has length 151 [2023-12-16 00:32:33,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:32:33,582 INFO L495 AbstractCegarLoop]: Abstraction has 2768 states and 5014 transitions. [2023-12-16 00:32:33,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.5) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 00:32:33,583 INFO L276 IsEmpty]: Start isEmpty. Operand 2768 states and 5014 transitions. [2023-12-16 00:32:33,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-16 00:32:33,584 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:32:33,585 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:32:33,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-16 00:32:33,585 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:32:33,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:32:33,587 INFO L85 PathProgramCache]: Analyzing trace with hash 653545645, now seen corresponding path program 1 times [2023-12-16 00:32:33,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:32:33,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377308363] [2023-12-16 00:32:33,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:32:33,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:32:33,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:32:33,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 00:32:33,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:32:33,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-16 00:32:33,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:32:33,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-16 00:32:33,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:32:33,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-16 00:32:33,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:32:33,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-16 00:32:33,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:32:33,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:32:33,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:32:33,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377308363] [2023-12-16 00:32:33,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377308363] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:32:33,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:32:33,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 00:32:33,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038829525] [2023-12-16 00:32:33,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:32:33,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 00:32:33,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:32:33,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 00:32:33,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 00:32:33,865 INFO L87 Difference]: Start difference. First operand 2768 states and 5014 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 00:32:37,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:32:37,111 INFO L93 Difference]: Finished difference Result 4098 states and 7236 transitions. [2023-12-16 00:32:37,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-16 00:32:37,112 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 151 [2023-12-16 00:32:37,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:32:37,123 INFO L225 Difference]: With dead ends: 4098 [2023-12-16 00:32:37,123 INFO L226 Difference]: Without dead ends: 3468 [2023-12-16 00:32:37,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-16 00:32:37,130 INFO L413 NwaCegarLoop]: 4390 mSDtfsCounter, 5356 mSDsluCounter, 17256 mSDsCounter, 0 mSdLazyCounter, 3461 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5374 SdHoareTripleChecker+Valid, 21646 SdHoareTripleChecker+Invalid, 3520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 3461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-16 00:32:37,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5374 Valid, 21646 Invalid, 3520 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [59 Valid, 3461 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-16 00:32:37,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3468 states. [2023-12-16 00:32:37,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3468 to 3067. [2023-12-16 00:32:37,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3067 states, 2980 states have (on average 1.7986577181208054) internal successors, (5360), 2984 states have internal predecessors, (5360), 65 states have call successors, (65), 18 states have call predecessors, (65), 20 states have return successors, (70), 66 states have call predecessors, (70), 65 states have call successors, (70) [2023-12-16 00:32:37,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3067 states to 3067 states and 5495 transitions. [2023-12-16 00:32:37,236 INFO L78 Accepts]: Start accepts. Automaton has 3067 states and 5495 transitions. Word has length 151 [2023-12-16 00:32:37,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:32:37,237 INFO L495 AbstractCegarLoop]: Abstraction has 3067 states and 5495 transitions. [2023-12-16 00:32:37,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 00:32:37,237 INFO L276 IsEmpty]: Start isEmpty. Operand 3067 states and 5495 transitions. [2023-12-16 00:32:37,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-16 00:32:37,238 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:32:37,238 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:32:37,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-16 00:32:37,239 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:32:37,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:32:37,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1328705771, now seen corresponding path program 1 times [2023-12-16 00:32:37,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:32:37,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384774152] [2023-12-16 00:32:37,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:32:37,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:32:37,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:32:37,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 00:32:37,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:32:37,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-16 00:32:37,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:32:37,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-16 00:32:37,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:32:37,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-16 00:32:37,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:32:37,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-16 00:32:37,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:32:37,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:32:37,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:32:37,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384774152] [2023-12-16 00:32:37,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384774152] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:32:37,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:32:37,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 00:32:37,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637946967] [2023-12-16 00:32:37,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:32:37,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 00:32:37,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:32:37,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 00:32:37,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 00:32:37,499 INFO L87 Difference]: Start difference. First operand 3067 states and 5495 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 00:32:40,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:32:40,684 INFO L93 Difference]: Finished difference Result 5248 states and 9131 transitions. [2023-12-16 00:32:40,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-16 00:32:40,684 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 151 [2023-12-16 00:32:40,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:32:40,699 INFO L225 Difference]: With dead ends: 5248 [2023-12-16 00:32:40,699 INFO L226 Difference]: Without dead ends: 4319 [2023-12-16 00:32:40,703 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-16 00:32:40,704 INFO L413 NwaCegarLoop]: 4388 mSDtfsCounter, 5354 mSDsluCounter, 17256 mSDsCounter, 0 mSdLazyCounter, 3457 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5372 SdHoareTripleChecker+Valid, 21644 SdHoareTripleChecker+Invalid, 3518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 3457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-16 00:32:40,704 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5372 Valid, 21644 Invalid, 3518 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [61 Valid, 3457 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-16 00:32:40,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4319 states. [2023-12-16 00:32:40,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4319 to 3666. [2023-12-16 00:32:40,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3666 states, 3525 states have (on average 1.7699290780141843) internal successors, (6239), 3531 states have internal predecessors, (6239), 105 states have call successors, (105), 30 states have call predecessors, (105), 34 states have return successors, (118), 108 states have call predecessors, (118), 105 states have call successors, (118) [2023-12-16 00:32:40,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3666 states to 3666 states and 6462 transitions. [2023-12-16 00:32:40,822 INFO L78 Accepts]: Start accepts. Automaton has 3666 states and 6462 transitions. Word has length 151 [2023-12-16 00:32:40,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:32:40,823 INFO L495 AbstractCegarLoop]: Abstraction has 3666 states and 6462 transitions. [2023-12-16 00:32:40,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 00:32:40,823 INFO L276 IsEmpty]: Start isEmpty. Operand 3666 states and 6462 transitions. [2023-12-16 00:32:40,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-16 00:32:40,825 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:32:40,825 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:32:40,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-16 00:32:40,825 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:32:40,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:32:40,826 INFO L85 PathProgramCache]: Analyzing trace with hash 380653805, now seen corresponding path program 1 times [2023-12-16 00:32:40,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:32:40,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266168758] [2023-12-16 00:32:40,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:32:40,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:32:40,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:32:40,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 00:32:40,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:32:40,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-16 00:32:40,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:32:41,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-16 00:32:41,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:32:41,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-16 00:32:41,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:32:41,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-16 00:32:41,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:32:41,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:32:41,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:32:41,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266168758] [2023-12-16 00:32:41,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266168758] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:32:41,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:32:41,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 00:32:41,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331892126] [2023-12-16 00:32:41,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:32:41,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 00:32:41,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:32:41,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 00:32:41,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-16 00:32:41,053 INFO L87 Difference]: Start difference. First operand 3666 states and 6462 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 00:32:42,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:32:42,767 INFO L93 Difference]: Finished difference Result 5837 states and 10091 transitions. [2023-12-16 00:32:42,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 00:32:42,768 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 151 [2023-12-16 00:32:42,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:32:42,782 INFO L225 Difference]: With dead ends: 5837 [2023-12-16 00:32:42,782 INFO L226 Difference]: Without dead ends: 4309 [2023-12-16 00:32:42,785 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-16 00:32:42,786 INFO L413 NwaCegarLoop]: 4192 mSDtfsCounter, 4957 mSDsluCounter, 16550 mSDsCounter, 0 mSdLazyCounter, 1769 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4976 SdHoareTripleChecker+Valid, 20742 SdHoareTripleChecker+Invalid, 1832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 1769 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-16 00:32:42,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4976 Valid, 20742 Invalid, 1832 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 1769 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-16 00:32:42,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4309 states. [2023-12-16 00:32:42,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4309 to 3666. [2023-12-16 00:32:42,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3666 states, 3525 states have (on average 1.7685106382978724) internal successors, (6234), 3531 states have internal predecessors, (6234), 105 states have call successors, (105), 30 states have call predecessors, (105), 34 states have return successors, (118), 108 states have call predecessors, (118), 105 states have call successors, (118) [2023-12-16 00:32:42,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3666 states to 3666 states and 6457 transitions. [2023-12-16 00:32:42,877 INFO L78 Accepts]: Start accepts. Automaton has 3666 states and 6457 transitions. Word has length 151 [2023-12-16 00:32:42,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:32:42,878 INFO L495 AbstractCegarLoop]: Abstraction has 3666 states and 6457 transitions. [2023-12-16 00:32:42,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 00:32:42,878 INFO L276 IsEmpty]: Start isEmpty. Operand 3666 states and 6457 transitions. [2023-12-16 00:32:42,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-16 00:32:42,879 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:32:42,880 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:32:42,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-16 00:32:42,880 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:32:42,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:32:42,880 INFO L85 PathProgramCache]: Analyzing trace with hash -204117845, now seen corresponding path program 1 times [2023-12-16 00:32:42,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:32:42,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992698238] [2023-12-16 00:32:42,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:32:42,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:32:42,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:32:42,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 00:32:42,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:32:43,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-16 00:32:43,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:32:43,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-16 00:32:43,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:32:43,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-16 00:32:43,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:32:43,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-16 00:32:43,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:32:43,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:32:43,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:32:43,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992698238] [2023-12-16 00:32:43,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992698238] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:32:43,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:32:43,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 00:32:43,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716908340] [2023-12-16 00:32:43,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:32:43,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 00:32:43,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:32:43,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 00:32:43,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-16 00:32:43,062 INFO L87 Difference]: Start difference. First operand 3666 states and 6457 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 00:32:44,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:32:44,434 INFO L93 Difference]: Finished difference Result 5831 states and 10065 transitions. [2023-12-16 00:32:44,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 00:32:44,435 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 151 [2023-12-16 00:32:44,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:32:44,453 INFO L225 Difference]: With dead ends: 5831 [2023-12-16 00:32:44,453 INFO L226 Difference]: Without dead ends: 4303 [2023-12-16 00:32:44,459 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-16 00:32:44,459 INFO L413 NwaCegarLoop]: 4192 mSDtfsCounter, 5096 mSDsluCounter, 12441 mSDsCounter, 0 mSdLazyCounter, 1581 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5115 SdHoareTripleChecker+Valid, 16633 SdHoareTripleChecker+Invalid, 1669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-16 00:32:44,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5115 Valid, 16633 Invalid, 1669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 1581 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-16 00:32:44,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4303 states. [2023-12-16 00:32:44,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4303 to 3666. [2023-12-16 00:32:44,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3666 states, 3525 states have (on average 1.7670921985815602) internal successors, (6229), 3531 states have internal predecessors, (6229), 105 states have call successors, (105), 30 states have call predecessors, (105), 34 states have return successors, (118), 108 states have call predecessors, (118), 105 states have call successors, (118) [2023-12-16 00:32:44,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3666 states to 3666 states and 6452 transitions. [2023-12-16 00:32:44,549 INFO L78 Accepts]: Start accepts. Automaton has 3666 states and 6452 transitions. Word has length 151 [2023-12-16 00:32:44,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:32:44,549 INFO L495 AbstractCegarLoop]: Abstraction has 3666 states and 6452 transitions. [2023-12-16 00:32:44,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 00:32:44,549 INFO L276 IsEmpty]: Start isEmpty. Operand 3666 states and 6452 transitions. [2023-12-16 00:32:44,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-16 00:32:44,550 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:32:44,551 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:32:44,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-16 00:32:44,551 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:32:44,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:32:44,551 INFO L85 PathProgramCache]: Analyzing trace with hash -638623443, now seen corresponding path program 1 times [2023-12-16 00:32:44,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:32:44,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293746383] [2023-12-16 00:32:44,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:32:44,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:32:44,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:32:44,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 00:32:44,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:32:44,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-16 00:32:44,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:32:44,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-16 00:32:44,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:32:44,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-16 00:32:44,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:32:44,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-16 00:32:44,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:32:44,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:32:44,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:32:44,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293746383] [2023-12-16 00:32:44,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293746383] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:32:44,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:32:44,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 00:32:44,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451331898] [2023-12-16 00:32:44,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:32:44,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 00:32:44,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:32:44,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 00:32:44,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-16 00:32:44,720 INFO L87 Difference]: Start difference. First operand 3666 states and 6452 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 00:32:46,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:32:46,380 INFO L93 Difference]: Finished difference Result 5824 states and 10037 transitions. [2023-12-16 00:32:46,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 00:32:46,380 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 151 [2023-12-16 00:32:46,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:32:46,390 INFO L225 Difference]: With dead ends: 5824 [2023-12-16 00:32:46,390 INFO L226 Difference]: Without dead ends: 4296 [2023-12-16 00:32:46,394 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-16 00:32:46,394 INFO L413 NwaCegarLoop]: 4192 mSDtfsCounter, 4958 mSDsluCounter, 16550 mSDsCounter, 0 mSdLazyCounter, 1732 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4977 SdHoareTripleChecker+Valid, 20742 SdHoareTripleChecker+Invalid, 1795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 1732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-16 00:32:46,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4977 Valid, 20742 Invalid, 1795 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [63 Valid, 1732 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-16 00:32:46,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4296 states. [2023-12-16 00:32:46,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4296 to 3666. [2023-12-16 00:32:46,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3666 states, 3525 states have (on average 1.7656737588652482) internal successors, (6224), 3531 states have internal predecessors, (6224), 105 states have call successors, (105), 30 states have call predecessors, (105), 34 states have return successors, (118), 108 states have call predecessors, (118), 105 states have call successors, (118) [2023-12-16 00:32:46,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3666 states to 3666 states and 6447 transitions. [2023-12-16 00:32:46,476 INFO L78 Accepts]: Start accepts. Automaton has 3666 states and 6447 transitions. Word has length 151 [2023-12-16 00:32:46,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:32:46,476 INFO L495 AbstractCegarLoop]: Abstraction has 3666 states and 6447 transitions. [2023-12-16 00:32:46,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 00:32:46,476 INFO L276 IsEmpty]: Start isEmpty. Operand 3666 states and 6447 transitions. [2023-12-16 00:32:46,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-16 00:32:46,478 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:32:46,478 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:32:46,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-16 00:32:46,478 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:32:46,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:32:46,479 INFO L85 PathProgramCache]: Analyzing trace with hash -1068281749, now seen corresponding path program 1 times [2023-12-16 00:32:46,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:32:46,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890105032] [2023-12-16 00:32:46,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:32:46,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:32:46,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:32:46,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 00:32:46,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:32:46,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-16 00:32:46,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:32:46,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-16 00:32:46,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:32:46,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-16 00:32:46,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:32:46,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-16 00:32:46,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:32:46,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:32:46,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:32:46,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890105032] [2023-12-16 00:32:46,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890105032] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:32:46,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:32:46,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 00:32:46,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81845563] [2023-12-16 00:32:46,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:32:46,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 00:32:46,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:32:46,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 00:32:46,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-16 00:32:46,646 INFO L87 Difference]: Start difference. First operand 3666 states and 6447 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 00:32:48,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:32:48,119 INFO L93 Difference]: Finished difference Result 5812 states and 9999 transitions. [2023-12-16 00:32:48,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 00:32:48,120 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 151 [2023-12-16 00:32:48,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:32:48,130 INFO L225 Difference]: With dead ends: 5812 [2023-12-16 00:32:48,130 INFO L226 Difference]: Without dead ends: 4284 [2023-12-16 00:32:48,134 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-16 00:32:48,134 INFO L413 NwaCegarLoop]: 4192 mSDtfsCounter, 4955 mSDsluCounter, 16550 mSDsCounter, 0 mSdLazyCounter, 1708 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4974 SdHoareTripleChecker+Valid, 20742 SdHoareTripleChecker+Invalid, 1771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 1708 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-16 00:32:48,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4974 Valid, 20742 Invalid, 1771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 1708 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-16 00:32:48,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4284 states. [2023-12-16 00:32:48,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4284 to 3666. [2023-12-16 00:32:48,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3666 states, 3525 states have (on average 1.764255319148936) internal successors, (6219), 3531 states have internal predecessors, (6219), 105 states have call successors, (105), 30 states have call predecessors, (105), 34 states have return successors, (118), 108 states have call predecessors, (118), 105 states have call successors, (118) [2023-12-16 00:32:48,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3666 states to 3666 states and 6442 transitions. [2023-12-16 00:32:48,220 INFO L78 Accepts]: Start accepts. Automaton has 3666 states and 6442 transitions. Word has length 151 [2023-12-16 00:32:48,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:32:48,221 INFO L495 AbstractCegarLoop]: Abstraction has 3666 states and 6442 transitions. [2023-12-16 00:32:48,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 00:32:48,221 INFO L276 IsEmpty]: Start isEmpty. Operand 3666 states and 6442 transitions. [2023-12-16 00:32:48,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-16 00:32:48,223 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:32:48,223 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:32:48,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-16 00:32:48,223 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:32:48,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:32:48,224 INFO L85 PathProgramCache]: Analyzing trace with hash -121243863, now seen corresponding path program 1 times [2023-12-16 00:32:48,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:32:48,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107095835] [2023-12-16 00:32:48,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:32:48,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:32:48,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:32:48,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 00:32:48,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:32:48,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-16 00:32:48,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:32:48,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-16 00:32:48,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:32:48,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-16 00:32:48,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:32:48,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-16 00:32:48,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:32:48,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:32:48,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:32:48,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107095835] [2023-12-16 00:32:48,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107095835] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:32:48,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:32:48,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 00:32:48,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780716823] [2023-12-16 00:32:48,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:32:48,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 00:32:48,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:32:48,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 00:32:48,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 00:32:48,420 INFO L87 Difference]: Start difference. First operand 3666 states and 6442 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 00:32:51,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:32:51,363 INFO L93 Difference]: Finished difference Result 7418 states and 12588 transitions. [2023-12-16 00:32:51,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-16 00:32:51,363 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 151 [2023-12-16 00:32:51,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:32:51,376 INFO L225 Difference]: With dead ends: 7418 [2023-12-16 00:32:51,377 INFO L226 Difference]: Without dead ends: 5890 [2023-12-16 00:32:51,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-16 00:32:51,383 INFO L413 NwaCegarLoop]: 4388 mSDtfsCounter, 5325 mSDsluCounter, 17256 mSDsCounter, 0 mSdLazyCounter, 3327 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5343 SdHoareTripleChecker+Valid, 21644 SdHoareTripleChecker+Invalid, 3388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 3327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-16 00:32:51,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5343 Valid, 21644 Invalid, 3388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 3327 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-16 00:32:51,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5890 states. [2023-12-16 00:32:51,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5890 to 4887. [2023-12-16 00:32:51,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4887 states, 4638 states have (on average 1.7231565329883571) internal successors, (7992), 4648 states have internal predecessors, (7992), 185 states have call successors, (185), 54 states have call predecessors, (185), 62 states have return successors, (220), 192 states have call predecessors, (220), 185 states have call successors, (220) [2023-12-16 00:32:51,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4887 states to 4887 states and 8397 transitions. [2023-12-16 00:32:51,500 INFO L78 Accepts]: Start accepts. Automaton has 4887 states and 8397 transitions. Word has length 151 [2023-12-16 00:32:51,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:32:51,500 INFO L495 AbstractCegarLoop]: Abstraction has 4887 states and 8397 transitions. [2023-12-16 00:32:51,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 00:32:51,500 INFO L276 IsEmpty]: Start isEmpty. Operand 4887 states and 8397 transitions. [2023-12-16 00:32:51,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-16 00:32:51,503 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:32:51,503 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:32:51,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-16 00:32:51,503 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:32:51,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:32:51,503 INFO L85 PathProgramCache]: Analyzing trace with hash 740589739, now seen corresponding path program 1 times [2023-12-16 00:32:51,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:32:51,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110251374] [2023-12-16 00:32:51,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:32:51,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:32:51,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:32:51,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 00:32:51,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:32:51,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-16 00:32:51,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:32:51,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-16 00:32:51,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:32:51,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-16 00:32:51,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:32:51,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-16 00:32:51,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:32:51,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:32:51,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:32:51,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110251374] [2023-12-16 00:32:51,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110251374] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:32:51,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:32:51,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 00:32:51,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834329892] [2023-12-16 00:32:51,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:32:51,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 00:32:51,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:32:51,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 00:32:51,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 00:32:51,679 INFO L87 Difference]: Start difference. First operand 4887 states and 8397 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 00:32:54,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:32:54,725 INFO L93 Difference]: Finished difference Result 11823 states and 19739 transitions. [2023-12-16 00:32:54,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-16 00:32:54,726 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 151 [2023-12-16 00:32:54,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:32:54,746 INFO L225 Difference]: With dead ends: 11823 [2023-12-16 00:32:54,746 INFO L226 Difference]: Without dead ends: 9074 [2023-12-16 00:32:54,752 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-16 00:32:54,753 INFO L413 NwaCegarLoop]: 4388 mSDtfsCounter, 5324 mSDsluCounter, 17256 mSDsCounter, 0 mSdLazyCounter, 3314 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5342 SdHoareTripleChecker+Valid, 21644 SdHoareTripleChecker+Invalid, 3375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 3314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-16 00:32:54,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5342 Valid, 21644 Invalid, 3375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 3314 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-16 00:32:54,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9074 states. [2023-12-16 00:32:54,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9074 to 7326. [2023-12-16 00:32:54,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7326 states, 6861 states have (on average 1.6802215420492639) internal successors, (11528), 6879 states have internal predecessors, (11528), 345 states have call successors, (345), 102 states have call predecessors, (345), 118 states have return successors, (442), 360 states have call predecessors, (442), 345 states have call successors, (442) [2023-12-16 00:32:54,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7326 states to 7326 states and 12315 transitions. [2023-12-16 00:32:54,943 INFO L78 Accepts]: Start accepts. Automaton has 7326 states and 12315 transitions. Word has length 151 [2023-12-16 00:32:54,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:32:54,944 INFO L495 AbstractCegarLoop]: Abstraction has 7326 states and 12315 transitions. [2023-12-16 00:32:54,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 00:32:54,944 INFO L276 IsEmpty]: Start isEmpty. Operand 7326 states and 12315 transitions. [2023-12-16 00:32:54,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-16 00:32:54,947 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:32:54,947 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:32:54,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-16 00:32:54,948 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:32:54,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:32:54,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1309819159, now seen corresponding path program 1 times [2023-12-16 00:32:54,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:32:54,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438918205] [2023-12-16 00:32:54,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:32:54,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:32:54,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:32:55,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 00:32:55,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:32:55,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-16 00:32:55,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:32:55,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-16 00:32:55,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:32:55,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-16 00:32:55,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:32:55,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-16 00:32:55,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:32:55,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:32:55,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:32:55,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438918205] [2023-12-16 00:32:55,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438918205] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:32:55,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:32:55,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 00:32:55,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591428642] [2023-12-16 00:32:55,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:32:55,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 00:32:55,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:32:55,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 00:32:55,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 00:32:55,116 INFO L87 Difference]: Start difference. First operand 7326 states and 12315 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 00:32:58,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:32:58,269 INFO L93 Difference]: Finished difference Result 20624 states and 34083 transitions. [2023-12-16 00:32:58,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-16 00:32:58,269 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 151 [2023-12-16 00:32:58,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:32:58,309 INFO L225 Difference]: With dead ends: 20624 [2023-12-16 00:32:58,310 INFO L226 Difference]: Without dead ends: 15436 [2023-12-16 00:32:58,324 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-16 00:32:58,325 INFO L413 NwaCegarLoop]: 4388 mSDtfsCounter, 5323 mSDsluCounter, 17256 mSDsCounter, 0 mSdLazyCounter, 3301 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5341 SdHoareTripleChecker+Valid, 21644 SdHoareTripleChecker+Invalid, 3362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 3301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-16 00:32:58,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5341 Valid, 21644 Invalid, 3362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 3301 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-16 00:32:58,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15436 states. [2023-12-16 00:32:58,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15436 to 12219. [2023-12-16 00:32:58,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12219 states, 11322 states have (on average 1.6447624094682918) internal successors, (18622), 11356 states have internal predecessors, (18622), 665 states have call successors, (665), 198 states have call predecessors, (665), 230 states have return successors, (940), 696 states have call predecessors, (940), 665 states have call successors, (940) [2023-12-16 00:32:58,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12219 states to 12219 states and 20227 transitions. [2023-12-16 00:32:58,677 INFO L78 Accepts]: Start accepts. Automaton has 12219 states and 20227 transitions. Word has length 151 [2023-12-16 00:32:58,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:32:58,678 INFO L495 AbstractCegarLoop]: Abstraction has 12219 states and 20227 transitions. [2023-12-16 00:32:58,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 00:32:58,678 INFO L276 IsEmpty]: Start isEmpty. Operand 12219 states and 20227 transitions. [2023-12-16 00:32:58,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-16 00:32:58,685 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:32:58,686 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:32:58,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-16 00:32:58,686 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:32:58,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:32:58,686 INFO L85 PathProgramCache]: Analyzing trace with hash -821772053, now seen corresponding path program 1 times [2023-12-16 00:32:58,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:32:58,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307056230] [2023-12-16 00:32:58,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:32:58,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:32:58,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:32:58,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 00:32:58,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:32:58,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-16 00:32:58,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:32:58,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-16 00:32:58,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:32:58,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-16 00:32:58,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:32:58,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-16 00:32:58,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:32:58,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:32:58,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:32:58,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307056230] [2023-12-16 00:32:58,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307056230] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:32:58,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:32:58,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 00:32:58,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081650137] [2023-12-16 00:32:58,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:32:58,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 00:32:58,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:32:58,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 00:32:58,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-16 00:32:58,839 INFO L87 Difference]: Start difference. First operand 12219 states and 20227 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 00:33:00,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:33:00,577 INFO L93 Difference]: Finished difference Result 25682 states and 42532 transitions. [2023-12-16 00:33:00,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 00:33:00,577 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 151 [2023-12-16 00:33:00,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:33:00,625 INFO L225 Difference]: With dead ends: 25682 [2023-12-16 00:33:00,625 INFO L226 Difference]: Without dead ends: 15601 [2023-12-16 00:33:00,652 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-16 00:33:00,653 INFO L413 NwaCegarLoop]: 4192 mSDtfsCounter, 4956 mSDsluCounter, 16550 mSDsCounter, 0 mSdLazyCounter, 1662 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4975 SdHoareTripleChecker+Valid, 20742 SdHoareTripleChecker+Invalid, 1725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 1662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-16 00:33:00,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4975 Valid, 20742 Invalid, 1725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 1662 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-16 00:33:00,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15601 states. [2023-12-16 00:33:00,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15601 to 12219. [2023-12-16 00:33:01,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12219 states, 11322 states have (on average 1.641847730083024) internal successors, (18589), 11356 states have internal predecessors, (18589), 665 states have call successors, (665), 198 states have call predecessors, (665), 230 states have return successors, (940), 696 states have call predecessors, (940), 665 states have call successors, (940) [2023-12-16 00:33:01,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12219 states to 12219 states and 20194 transitions. [2023-12-16 00:33:01,038 INFO L78 Accepts]: Start accepts. Automaton has 12219 states and 20194 transitions. Word has length 151 [2023-12-16 00:33:01,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:33:01,039 INFO L495 AbstractCegarLoop]: Abstraction has 12219 states and 20194 transitions. [2023-12-16 00:33:01,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 00:33:01,040 INFO L276 IsEmpty]: Start isEmpty. Operand 12219 states and 20194 transitions. [2023-12-16 00:33:01,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-16 00:33:01,045 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:33:01,045 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:33:01,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-16 00:33:01,046 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:33:01,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:33:01,046 INFO L85 PathProgramCache]: Analyzing trace with hash -1914407255, now seen corresponding path program 1 times [2023-12-16 00:33:01,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:33:01,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471554856] [2023-12-16 00:33:01,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:33:01,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:33:01,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:33:01,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 00:33:01,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:33:01,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-16 00:33:01,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:33:01,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-16 00:33:01,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:33:01,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-16 00:33:01,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:33:01,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-16 00:33:01,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:33:01,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:33:01,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:33:01,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471554856] [2023-12-16 00:33:01,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471554856] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:33:01,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:33:01,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 00:33:01,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909381665] [2023-12-16 00:33:01,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:33:01,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 00:33:01,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:33:01,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 00:33:01,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 00:33:01,225 INFO L87 Difference]: Start difference. First operand 12219 states and 20194 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 00:33:04,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:33:04,837 INFO L93 Difference]: Finished difference Result 42673 states and 69999 transitions. [2023-12-16 00:33:04,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-16 00:33:04,838 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 151 [2023-12-16 00:33:04,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:33:04,916 INFO L225 Difference]: With dead ends: 42673 [2023-12-16 00:33:04,916 INFO L226 Difference]: Without dead ends: 32592 [2023-12-16 00:33:04,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-16 00:33:04,934 INFO L413 NwaCegarLoop]: 4386 mSDtfsCounter, 5714 mSDsluCounter, 17251 mSDsCounter, 0 mSdLazyCounter, 3253 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5744 SdHoareTripleChecker+Valid, 21637 SdHoareTripleChecker+Invalid, 3317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 3253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-16 00:33:04,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5744 Valid, 21637 Invalid, 3317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 3253 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-16 00:33:04,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32592 states. [2023-12-16 00:33:05,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32592 to 22005. [2023-12-16 00:33:05,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22005 states, 20276 states have (on average 1.617330834484119) internal successors, (32793), 20342 states have internal predecessors, (32793), 1273 states have call successors, (1273), 390 states have call predecessors, (1273), 454 states have return successors, (2066), 1336 states have call predecessors, (2066), 1273 states have call successors, (2066) [2023-12-16 00:33:05,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22005 states to 22005 states and 36132 transitions. [2023-12-16 00:33:05,692 INFO L78 Accepts]: Start accepts. Automaton has 22005 states and 36132 transitions. Word has length 151 [2023-12-16 00:33:05,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:33:05,692 INFO L495 AbstractCegarLoop]: Abstraction has 22005 states and 36132 transitions. [2023-12-16 00:33:05,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 00:33:05,692 INFO L276 IsEmpty]: Start isEmpty. Operand 22005 states and 36132 transitions. [2023-12-16 00:33:05,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-16 00:33:05,701 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:33:05,701 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:33:05,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-16 00:33:05,702 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:33:05,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:33:05,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1098387755, now seen corresponding path program 1 times [2023-12-16 00:33:05,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:33:05,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024316166] [2023-12-16 00:33:05,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:33:05,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:33:05,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:33:05,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 00:33:05,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:33:05,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-16 00:33:05,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:33:05,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-16 00:33:05,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:33:05,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-16 00:33:05,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:33:05,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-16 00:33:05,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:33:05,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:33:05,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:33:05,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024316166] [2023-12-16 00:33:05,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024316166] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:33:05,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:33:05,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 00:33:05,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436751632] [2023-12-16 00:33:05,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:33:05,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 00:33:05,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:33:05,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 00:33:05,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 00:33:05,996 INFO L87 Difference]: Start difference. First operand 22005 states and 36132 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 00:33:10,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:33:10,249 INFO L93 Difference]: Finished difference Result 81465 states and 133999 transitions. [2023-12-16 00:33:10,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-16 00:33:10,249 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 151 [2023-12-16 00:33:10,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:33:10,534 INFO L225 Difference]: With dead ends: 81465 [2023-12-16 00:33:10,534 INFO L226 Difference]: Without dead ends: 61598 [2023-12-16 00:33:10,577 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-16 00:33:10,578 INFO L413 NwaCegarLoop]: 4385 mSDtfsCounter, 5411 mSDsluCounter, 17248 mSDsCounter, 0 mSdLazyCounter, 3855 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5428 SdHoareTripleChecker+Valid, 21633 SdHoareTripleChecker+Invalid, 3918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 3855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-16 00:33:10,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5428 Valid, 21633 Invalid, 3918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 3855 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-16 00:33:10,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61598 states. [2023-12-16 00:33:11,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61598 to 41254. [2023-12-16 00:33:12,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41254 states, 37893 states have (on average 1.603119309635025) internal successors, (60747), 38023 states have internal predecessors, (60747), 2457 states have call successors, (2457), 774 states have call predecessors, (2457), 902 states have return successors, (4772), 2584 states have call predecessors, (4772), 2457 states have call successors, (4772) [2023-12-16 00:33:12,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41254 states to 41254 states and 67976 transitions. [2023-12-16 00:33:12,117 INFO L78 Accepts]: Start accepts. Automaton has 41254 states and 67976 transitions. Word has length 151 [2023-12-16 00:33:12,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:33:12,118 INFO L495 AbstractCegarLoop]: Abstraction has 41254 states and 67976 transitions. [2023-12-16 00:33:12,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 00:33:12,118 INFO L276 IsEmpty]: Start isEmpty. Operand 41254 states and 67976 transitions. [2023-12-16 00:33:12,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-16 00:33:12,136 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:33:12,137 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:33:12,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-16 00:33:12,137 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:33:12,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:33:12,137 INFO L85 PathProgramCache]: Analyzing trace with hash -744087959, now seen corresponding path program 1 times [2023-12-16 00:33:12,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:33:12,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720887823] [2023-12-16 00:33:12,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:33:12,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:33:12,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:33:12,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 00:33:12,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:33:12,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-16 00:33:12,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:33:12,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-16 00:33:12,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:33:12,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-16 00:33:12,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:33:12,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-16 00:33:12,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:33:12,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:33:12,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:33:12,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720887823] [2023-12-16 00:33:12,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720887823] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:33:12,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:33:12,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 00:33:12,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474241139] [2023-12-16 00:33:12,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:33:12,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 00:33:12,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:33:12,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 00:33:12,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 00:33:12,293 INFO L87 Difference]: Start difference. First operand 41254 states and 67976 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Received shutdown request... [2023-12-16 00:33:13,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 00:33:13,254 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2023-12-16 00:33:13,254 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 590 mSDsluCounter, 761 mSDsCounter, 0 mSdLazyCounter, 603 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 590 SdHoareTripleChecker+Valid, 960 SdHoareTripleChecker+Invalid, 611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 00:33:13,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [590 Valid, 960 Invalid, 611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 603 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 00:33:13,256 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-12-16 00:33:13,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-16 00:33:13,257 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (41254states) and FLOYD_HOARE automaton (currently 9 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (1019 states constructed, input type IntersectNwa). [2023-12-16 00:33:13,258 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 00:33:13,259 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-12-16 00:33:13,261 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:33:13,263 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 00:33:13,265 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 12:33:13 BoogieIcfgContainer [2023-12-16 00:33:13,265 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 00:33:13,265 INFO L158 Benchmark]: Toolchain (without parser) took 53894.80ms. Allocated memory was 290.5MB in the beginning and 1.8GB in the end (delta: 1.5GB). Free memory was 219.4MB in the beginning and 1.3GB in the end (delta: -1.1GB). Peak memory consumption was 428.8MB. Max. memory is 8.0GB. [2023-12-16 00:33:13,265 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 188.7MB. Free memory is still 136.1MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 00:33:13,265 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2121.45ms. Allocated memory was 290.5MB in the beginning and 374.3MB in the end (delta: 83.9MB). Free memory was 219.4MB in the beginning and 211.6MB in the end (delta: 7.8MB). Peak memory consumption was 123.7MB. Max. memory is 8.0GB. [2023-12-16 00:33:13,266 INFO L158 Benchmark]: Boogie Procedure Inliner took 340.98ms. Allocated memory is still 374.3MB. Free memory was 211.6MB in the beginning and 224.7MB in the end (delta: -13.1MB). Peak memory consumption was 93.8MB. Max. memory is 8.0GB. [2023-12-16 00:33:13,266 INFO L158 Benchmark]: Boogie Preprocessor took 482.11ms. Allocated memory is still 374.3MB. Free memory was 224.7MB in the beginning and 202.7MB in the end (delta: 22.0MB). Peak memory consumption was 90.7MB. Max. memory is 8.0GB. [2023-12-16 00:33:13,266 INFO L158 Benchmark]: RCFGBuilder took 6046.34ms. Allocated memory was 374.3MB in the beginning and 1.2GB in the end (delta: 818.9MB). Free memory was 202.7MB in the beginning and 657.2MB in the end (delta: -454.6MB). Peak memory consumption was 365.4MB. Max. memory is 8.0GB. [2023-12-16 00:33:13,266 INFO L158 Benchmark]: TraceAbstraction took 44898.24ms. Allocated memory was 1.2GB in the beginning and 1.8GB in the end (delta: 595.6MB). Free memory was 656.7MB in the beginning and 1.3GB in the end (delta: -632.8MB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 00:33:13,267 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 188.7MB. Free memory is still 136.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 2121.45ms. Allocated memory was 290.5MB in the beginning and 374.3MB in the end (delta: 83.9MB). Free memory was 219.4MB in the beginning and 211.6MB in the end (delta: 7.8MB). Peak memory consumption was 123.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 340.98ms. Allocated memory is still 374.3MB. Free memory was 211.6MB in the beginning and 224.7MB in the end (delta: -13.1MB). Peak memory consumption was 93.8MB. Max. memory is 8.0GB. * Boogie Preprocessor took 482.11ms. Allocated memory is still 374.3MB. Free memory was 224.7MB in the beginning and 202.7MB in the end (delta: 22.0MB). Peak memory consumption was 90.7MB. Max. memory is 8.0GB. * RCFGBuilder took 6046.34ms. Allocated memory was 374.3MB in the beginning and 1.2GB in the end (delta: 818.9MB). Free memory was 202.7MB in the beginning and 657.2MB in the end (delta: -454.6MB). Peak memory consumption was 365.4MB. Max. memory is 8.0GB. * TraceAbstraction took 44898.24ms. Allocated memory was 1.2GB in the beginning and 1.8GB in the end (delta: 595.6MB). Free memory was 656.7MB in the beginning and 1.3GB in the end (delta: -632.8MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 11173]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 11173). Cancelled while NwaCegarLoop was constructing difference of abstraction (41254states) and FLOYD_HOARE automaton (currently 9 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (1019 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 10998]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 10998). Cancelled while NwaCegarLoop was constructing difference of abstraction (41254states) and FLOYD_HOARE automaton (currently 9 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (1019 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 2448 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 44.8s, OverallIterations: 15, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 37.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 69819 SdHoareTripleChecker+Valid, 25.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 69546 mSDsluCounter, 285424 SdHoareTripleChecker+Invalid, 21.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 225062 mSDsCounter, 936 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 36190 IncrementalHoareTripleChecker+Invalid, 37126 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 936 mSolverCounterUnsat, 60362 mSDtfsCounter, 36190 mSolverCounterSat, 0.7s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 363 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 343 ImplicationChecksByTransitivity, 7.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41254occurred in iteration=14, InterpolantAutomatonStates: 151, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 4.1s AutomataMinimizationTime, 14 MinimizatonAttempts, 44222 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 3.1s InterpolantComputationTime, 2265 NumberOfCodeBlocks, 2265 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 2250 ConstructedInterpolants, 0 QuantifiedInterpolants, 6711 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 15 InterpolantComputations, 15 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown