/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/combinations/Problem05_label44+token_ring.02.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-18 22:17:57,094 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-18 22:17:57,160 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-18 22:17:57,167 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-18 22:17:57,167 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-18 22:17:57,192 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-18 22:17:57,192 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-18 22:17:57,192 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-18 22:17:57,193 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-18 22:17:57,193 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-18 22:17:57,193 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-18 22:17:57,193 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-18 22:17:57,194 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-18 22:17:57,194 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-18 22:17:57,194 INFO L153 SettingsManager]: * Use SBE=true [2023-12-18 22:17:57,195 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-18 22:17:57,195 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-18 22:17:57,195 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-18 22:17:57,195 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-18 22:17:57,195 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-18 22:17:57,196 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-18 22:17:57,199 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-18 22:17:57,199 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-18 22:17:57,200 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-18 22:17:57,202 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-18 22:17:57,202 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-18 22:17:57,203 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-18 22:17:57,203 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-18 22:17:57,203 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-18 22:17:57,203 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-18 22:17:57,204 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-18 22:17:57,204 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-18 22:17:57,204 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-18 22:17:57,204 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-18 22:17:57,205 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-18 22:17:57,205 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-18 22:17:57,205 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-18 22:17:57,205 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-18 22:17:57,205 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-18 22:17:57,205 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-18 22:17:57,205 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-18 22:17:57,205 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-18 22:17:57,206 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-18 22:17:57,206 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-18 22:17:57,465 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-18 22:17:57,486 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-18 22:17:57,488 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-18 22:17:57,489 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-18 22:17:57,489 INFO L274 PluginConnector]: CDTParser initialized [2023-12-18 22:17:57,490 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/Problem05_label44+token_ring.02.cil-1.c [2023-12-18 22:17:58,556 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-18 22:17:59,052 INFO L384 CDTParser]: Found 1 translation units. [2023-12-18 22:17:59,053 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label44+token_ring.02.cil-1.c [2023-12-18 22:17:59,100 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05b77d076/85280a0232f24e2d8d6842e1e9bf3214/FLAG77a29f56f [2023-12-18 22:17:59,114 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05b77d076/85280a0232f24e2d8d6842e1e9bf3214 [2023-12-18 22:17:59,116 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-18 22:17:59,117 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-18 22:17:59,119 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-18 22:17:59,119 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-18 22:17:59,123 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-18 22:17:59,123 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 10:17:59" (1/1) ... [2023-12-18 22:17:59,124 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d22bf43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:17:59, skipping insertion in model container [2023-12-18 22:17:59,124 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 10:17:59" (1/1) ... [2023-12-18 22:17:59,276 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-18 22:18:00,555 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_label44+token_ring.02.cil-1.c[377340,377353] [2023-12-18 22:18:00,579 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_label44+token_ring.02.cil-1.c[383339,383352] [2023-12-18 22:18:00,680 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-18 22:18:00,690 INFO L202 MainTranslator]: Completed pre-run [2023-12-18 22:18:01,281 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_label44+token_ring.02.cil-1.c[377340,377353] [2023-12-18 22:18:01,288 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_label44+token_ring.02.cil-1.c[383339,383352] [2023-12-18 22:18:01,305 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-18 22:18:01,404 INFO L206 MainTranslator]: Completed translation [2023-12-18 22:18:01,405 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:18:01 WrapperNode [2023-12-18 22:18:01,405 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-18 22:18:01,407 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-18 22:18:01,407 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-18 22:18:01,407 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-18 22:18:01,412 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:18:01" (1/1) ... [2023-12-18 22:18:01,501 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:18:01" (1/1) ... [2023-12-18 22:18:01,826 INFO L138 Inliner]: procedures = 48, calls = 47, calls flagged for inlining = 26, calls inlined = 26, statements flattened = 12633 [2023-12-18 22:18:01,826 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-18 22:18:01,827 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-18 22:18:01,827 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-18 22:18:01,827 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-18 22:18:01,835 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:18:01" (1/1) ... [2023-12-18 22:18:01,835 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:18:01" (1/1) ... [2023-12-18 22:18:01,971 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:18:01" (1/1) ... [2023-12-18 22:18:02,078 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]. [2023-12-18 22:18:02,078 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:18:01" (1/1) ... [2023-12-18 22:18:02,078 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:18:01" (1/1) ... [2023-12-18 22:18:02,291 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:18:01" (1/1) ... [2023-12-18 22:18:02,355 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:18:01" (1/1) ... [2023-12-18 22:18:02,385 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:18:01" (1/1) ... [2023-12-18 22:18:02,431 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:18:01" (1/1) ... [2023-12-18 22:18:02,467 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-18 22:18:02,468 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-18 22:18:02,468 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-18 22:18:02,468 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-18 22:18:02,468 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:18:01" (1/1) ... [2023-12-18 22:18:02,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-18 22:18:02,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 22:18:02,500 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-18 22:18:02,517 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-18 22:18:02,528 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-18 22:18:02,528 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-12-18 22:18:02,528 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-12-18 22:18:02,529 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-12-18 22:18:02,529 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-12-18 22:18:02,530 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-18 22:18:02,530 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-18 22:18:02,530 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-12-18 22:18:02,530 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-12-18 22:18:02,530 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-12-18 22:18:02,530 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-12-18 22:18:02,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-18 22:18:02,530 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-12-18 22:18:02,530 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-12-18 22:18:02,530 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-18 22:18:02,530 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-18 22:18:02,633 INFO L241 CfgBuilder]: Building ICFG [2023-12-18 22:18:02,635 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-18 22:18:08,162 INFO L282 CfgBuilder]: Performing block encoding [2023-12-18 22:18:08,249 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-18 22:18:08,249 INFO L309 CfgBuilder]: Removed 6 assume(true) statements. [2023-12-18 22:18:08,249 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 10:18:08 BoogieIcfgContainer [2023-12-18 22:18:08,250 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-18 22:18:08,253 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-18 22:18:08,253 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-18 22:18:08,255 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-18 22:18:08,256 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 10:17:59" (1/3) ... [2023-12-18 22:18:08,257 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@464803ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 10:18:08, skipping insertion in model container [2023-12-18 22:18:08,257 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:18:01" (2/3) ... [2023-12-18 22:18:08,257 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@464803ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 10:18:08, skipping insertion in model container [2023-12-18 22:18:08,257 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 10:18:08" (3/3) ... [2023-12-18 22:18:08,258 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label44+token_ring.02.cil-1.c [2023-12-18 22:18:08,269 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-18 22:18:08,269 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-18 22:18:08,345 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-18 22:18:08,351 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;@782561c5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-18 22:18:08,351 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-18 22:18:08,363 INFO L276 IsEmpty]: Start isEmpty. Operand has 2241 states, 2216 states have (on average 1.8858303249097472) internal successors, (4179), 2219 states have internal predecessors, (4179), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-18 22:18:08,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-18 22:18:08,377 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:18:08,378 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] [2023-12-18 22:18:08,378 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:18:08,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:18:08,383 INFO L85 PathProgramCache]: Analyzing trace with hash -584044612, now seen corresponding path program 1 times [2023-12-18 22:18:08,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:18:08,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859488072] [2023-12-18 22:18:08,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:18:08,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:18:08,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:08,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:18:08,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:08,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-18 22:18:08,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:08,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-18 22:18:08,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:08,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-18 22:18:08,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:08,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-18 22:18:08,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:08,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:18:08,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:18:08,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859488072] [2023-12-18 22:18:08,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859488072] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:18:08,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:18:08,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-18 22:18:08,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808520762] [2023-12-18 22:18:08,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:18:08,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-18 22:18:08,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:18:08,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-18 22:18:08,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-18 22:18:08,943 INFO L87 Difference]: Start difference. First operand has 2241 states, 2216 states have (on average 1.8858303249097472) internal successors, (4179), 2219 states have internal predecessors, (4179), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 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) [2023-12-18 22:18:09,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:18:09,753 INFO L93 Difference]: Finished difference Result 4643 states and 8686 transitions. [2023-12-18 22:18:09,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-18 22:18:09,755 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 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 61 [2023-12-18 22:18:09,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:18:09,772 INFO L225 Difference]: With dead ends: 4643 [2023-12-18 22:18:09,773 INFO L226 Difference]: Without dead ends: 2404 [2023-12-18 22:18:09,780 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-12-18 22:18:09,782 INFO L413 NwaCegarLoop]: 4057 mSDtfsCounter, 4350 mSDsluCounter, 12142 mSDsCounter, 0 mSdLazyCounter, 623 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4359 SdHoareTripleChecker+Valid, 16199 SdHoareTripleChecker+Invalid, 691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-18 22:18:09,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4359 Valid, 16199 Invalid, 691 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [68 Valid, 623 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-18 22:18:09,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2404 states. [2023-12-18 22:18:09,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2404 to 2345. [2023-12-18 22:18:09,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2345 states, 2303 states have (on average 1.84020842379505) internal successors, (4238), 2306 states have internal predecessors, (4238), 27 states have call successors, (27), 12 states have call predecessors, (27), 13 states have return successors, (30), 27 states have call predecessors, (30), 27 states have call successors, (30) [2023-12-18 22:18:09,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2345 states to 2345 states and 4295 transitions. [2023-12-18 22:18:09,875 INFO L78 Accepts]: Start accepts. Automaton has 2345 states and 4295 transitions. Word has length 61 [2023-12-18 22:18:09,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:18:09,875 INFO L495 AbstractCegarLoop]: Abstraction has 2345 states and 4295 transitions. [2023-12-18 22:18:09,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 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) [2023-12-18 22:18:09,876 INFO L276 IsEmpty]: Start isEmpty. Operand 2345 states and 4295 transitions. [2023-12-18 22:18:09,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-18 22:18:09,878 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:18:09,878 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] [2023-12-18 22:18:09,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-18 22:18:09,878 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:18:09,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:18:09,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1424404092, now seen corresponding path program 1 times [2023-12-18 22:18:09,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:18:09,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233283009] [2023-12-18 22:18:09,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:18:09,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:18:09,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:09,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:18:09,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:09,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-18 22:18:09,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:10,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-18 22:18:10,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:10,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-18 22:18:10,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:10,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-18 22:18:10,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:10,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:18:10,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:18:10,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233283009] [2023-12-18 22:18:10,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233283009] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:18:10,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:18:10,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:18:10,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441850547] [2023-12-18 22:18:10,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:18:10,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:18:10,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:18:10,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:18:10,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:18:10,043 INFO L87 Difference]: Start difference. First operand 2345 states and 4295 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 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) [2023-12-18 22:18:10,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:18:10,886 INFO L93 Difference]: Finished difference Result 2757 states and 4924 transitions. [2023-12-18 22:18:10,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-18 22:18:10,886 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 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 61 [2023-12-18 22:18:10,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:18:10,895 INFO L225 Difference]: With dead ends: 2757 [2023-12-18 22:18:10,895 INFO L226 Difference]: Without dead ends: 2541 [2023-12-18 22:18:10,897 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-18 22:18:10,898 INFO L413 NwaCegarLoop]: 4121 mSDtfsCounter, 4342 mSDsluCounter, 16314 mSDsCounter, 0 mSdLazyCounter, 1007 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4351 SdHoareTripleChecker+Valid, 20435 SdHoareTripleChecker+Invalid, 1048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1007 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-18 22:18:10,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4351 Valid, 20435 Invalid, 1048 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [41 Valid, 1007 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-18 22:18:10,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2541 states. [2023-12-18 22:18:10,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2541 to 2446. [2023-12-18 22:18:10,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2446 states, 2386 states have (on average 1.8281642917015926) internal successors, (4362), 2390 states have internal predecessors, (4362), 38 states have call successors, (38), 18 states have call predecessors, (38), 20 states have return successors, (43), 39 states have call predecessors, (43), 38 states have call successors, (43) [2023-12-18 22:18:10,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2446 states to 2446 states and 4443 transitions. [2023-12-18 22:18:10,952 INFO L78 Accepts]: Start accepts. Automaton has 2446 states and 4443 transitions. Word has length 61 [2023-12-18 22:18:10,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:18:10,952 INFO L495 AbstractCegarLoop]: Abstraction has 2446 states and 4443 transitions. [2023-12-18 22:18:10,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 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) [2023-12-18 22:18:10,952 INFO L276 IsEmpty]: Start isEmpty. Operand 2446 states and 4443 transitions. [2023-12-18 22:18:10,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-18 22:18:10,954 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:18:10,954 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] [2023-12-18 22:18:10,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-18 22:18:10,954 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:18:10,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:18:10,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1408885374, now seen corresponding path program 1 times [2023-12-18 22:18:10,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:18:10,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451790887] [2023-12-18 22:18:10,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:18:10,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:18:10,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:11,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:18:11,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:11,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-18 22:18:11,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:11,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-18 22:18:11,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:11,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-18 22:18:11,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:11,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-18 22:18:11,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:11,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:18:11,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:18:11,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451790887] [2023-12-18 22:18:11,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451790887] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:18:11,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:18:11,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:18:11,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150082322] [2023-12-18 22:18:11,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:18:11,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:18:11,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:18:11,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:18:11,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:18:11,062 INFO L87 Difference]: Start difference. First operand 2446 states and 4443 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 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) [2023-12-18 22:18:11,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:18:11,834 INFO L93 Difference]: Finished difference Result 3115 states and 5460 transitions. [2023-12-18 22:18:11,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-18 22:18:11,835 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 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 61 [2023-12-18 22:18:11,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:18:11,845 INFO L225 Difference]: With dead ends: 3115 [2023-12-18 22:18:11,845 INFO L226 Difference]: Without dead ends: 2798 [2023-12-18 22:18:11,847 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-18 22:18:11,847 INFO L413 NwaCegarLoop]: 4062 mSDtfsCounter, 4378 mSDsluCounter, 16167 mSDsCounter, 0 mSdLazyCounter, 828 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4387 SdHoareTripleChecker+Valid, 20229 SdHoareTripleChecker+Invalid, 887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 828 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-18 22:18:11,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4387 Valid, 20229 Invalid, 887 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 828 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-18 22:18:11,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2798 states. [2023-12-18 22:18:11,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2798 to 2649. [2023-12-18 22:18:11,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2649 states, 2553 states have (on average 1.8061104582843712) internal successors, (4611), 2559 states have internal predecessors, (4611), 60 states have call successors, (60), 30 states have call predecessors, (60), 34 states have return successors, (73), 63 states have call predecessors, (73), 60 states have call successors, (73) [2023-12-18 22:18:11,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2649 states to 2649 states and 4744 transitions. [2023-12-18 22:18:11,910 INFO L78 Accepts]: Start accepts. Automaton has 2649 states and 4744 transitions. Word has length 61 [2023-12-18 22:18:11,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:18:11,910 INFO L495 AbstractCegarLoop]: Abstraction has 2649 states and 4744 transitions. [2023-12-18 22:18:11,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 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) [2023-12-18 22:18:11,911 INFO L276 IsEmpty]: Start isEmpty. Operand 2649 states and 4744 transitions. [2023-12-18 22:18:11,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-18 22:18:11,912 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:18:11,912 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] [2023-12-18 22:18:11,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-18 22:18:11,912 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:18:11,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:18:11,913 INFO L85 PathProgramCache]: Analyzing trace with hash -946919876, now seen corresponding path program 1 times [2023-12-18 22:18:11,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:18:11,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788018539] [2023-12-18 22:18:11,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:18:11,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:18:11,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:11,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:18:11,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:11,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-18 22:18:11,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:11,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-18 22:18:11,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:11,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-18 22:18:11,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:11,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-18 22:18:11,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:12,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:18:12,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:18:12,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788018539] [2023-12-18 22:18:12,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788018539] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:18:12,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:18:12,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:18:12,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330858607] [2023-12-18 22:18:12,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:18:12,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:18:12,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:18:12,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:18:12,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:18:12,002 INFO L87 Difference]: Start difference. First operand 2649 states and 4744 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 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) [2023-12-18 22:18:12,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:18:12,949 INFO L93 Difference]: Finished difference Result 3887 states and 6619 transitions. [2023-12-18 22:18:12,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-18 22:18:12,950 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 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 61 [2023-12-18 22:18:12,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:18:12,966 INFO L225 Difference]: With dead ends: 3887 [2023-12-18 22:18:12,967 INFO L226 Difference]: Without dead ends: 3367 [2023-12-18 22:18:12,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-18 22:18:12,971 INFO L413 NwaCegarLoop]: 4116 mSDtfsCounter, 4350 mSDsluCounter, 16306 mSDsCounter, 0 mSdLazyCounter, 1083 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4358 SdHoareTripleChecker+Valid, 20422 SdHoareTripleChecker+Invalid, 1128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1083 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-18 22:18:12,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4358 Valid, 20422 Invalid, 1128 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [45 Valid, 1083 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-18 22:18:12,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3367 states. [2023-12-18 22:18:13,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3367 to 3033. [2023-12-18 22:18:13,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3033 states, 2869 states have (on average 1.7716974555594285) internal successors, (5083), 2879 states have internal predecessors, (5083), 100 states have call successors, (100), 54 states have call predecessors, (100), 62 states have return successors, (135), 107 states have call predecessors, (135), 100 states have call successors, (135) [2023-12-18 22:18:13,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3033 states to 3033 states and 5318 transitions. [2023-12-18 22:18:13,196 INFO L78 Accepts]: Start accepts. Automaton has 3033 states and 5318 transitions. Word has length 61 [2023-12-18 22:18:13,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:18:13,197 INFO L495 AbstractCegarLoop]: Abstraction has 3033 states and 5318 transitions. [2023-12-18 22:18:13,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 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) [2023-12-18 22:18:13,198 INFO L276 IsEmpty]: Start isEmpty. Operand 3033 states and 5318 transitions. [2023-12-18 22:18:13,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-18 22:18:13,200 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:18:13,200 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] [2023-12-18 22:18:13,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-18 22:18:13,201 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:18:13,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:18:13,201 INFO L85 PathProgramCache]: Analyzing trace with hash 981352826, now seen corresponding path program 1 times [2023-12-18 22:18:13,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:18:13,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262115454] [2023-12-18 22:18:13,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:18:13,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:18:13,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:13,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:18:13,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:13,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-18 22:18:13,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:13,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-18 22:18:13,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:13,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-18 22:18:13,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:13,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-18 22:18:13,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:13,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:18:13,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:18:13,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262115454] [2023-12-18 22:18:13,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262115454] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:18:13,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:18:13,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:18:13,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683975934] [2023-12-18 22:18:13,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:18:13,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:18:13,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:18:13,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:18:13,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:18:13,432 INFO L87 Difference]: Start difference. First operand 3033 states and 5318 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 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) [2023-12-18 22:18:14,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:18:14,339 INFO L93 Difference]: Finished difference Result 5185 states and 8559 transitions. [2023-12-18 22:18:14,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-18 22:18:14,339 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 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 61 [2023-12-18 22:18:14,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:18:14,353 INFO L225 Difference]: With dead ends: 5185 [2023-12-18 22:18:14,353 INFO L226 Difference]: Without dead ends: 4281 [2023-12-18 22:18:14,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-18 22:18:14,360 INFO L413 NwaCegarLoop]: 4117 mSDtfsCounter, 4350 mSDsluCounter, 16309 mSDsCounter, 0 mSdLazyCounter, 952 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4362 SdHoareTripleChecker+Valid, 20426 SdHoareTripleChecker+Invalid, 999 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 952 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-18 22:18:14,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4362 Valid, 20426 Invalid, 999 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 952 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-18 22:18:14,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4281 states. [2023-12-18 22:18:14,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4281 to 3818. [2023-12-18 22:18:14,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3818 states, 3522 states have (on average 1.7208972174900625) internal successors, (6061), 3540 states have internal predecessors, (6061), 176 states have call successors, (176), 102 states have call predecessors, (176), 118 states have return successors, (273), 191 states have call predecessors, (273), 176 states have call successors, (273) [2023-12-18 22:18:14,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3818 states to 3818 states and 6510 transitions. [2023-12-18 22:18:14,483 INFO L78 Accepts]: Start accepts. Automaton has 3818 states and 6510 transitions. Word has length 61 [2023-12-18 22:18:14,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:18:14,484 INFO L495 AbstractCegarLoop]: Abstraction has 3818 states and 6510 transitions. [2023-12-18 22:18:14,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 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) [2023-12-18 22:18:14,484 INFO L276 IsEmpty]: Start isEmpty. Operand 3818 states and 6510 transitions. [2023-12-18 22:18:14,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-18 22:18:14,486 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:18:14,486 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] [2023-12-18 22:18:14,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-18 22:18:14,486 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:18:14,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:18:14,487 INFO L85 PathProgramCache]: Analyzing trace with hash 1874839164, now seen corresponding path program 1 times [2023-12-18 22:18:14,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:18:14,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000734065] [2023-12-18 22:18:14,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:18:14,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:18:14,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:14,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:18:14,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:14,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-18 22:18:14,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:14,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-18 22:18:14,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:14,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-18 22:18:14,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:14,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-18 22:18:14,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:14,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:18:14,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:18:14,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000734065] [2023-12-18 22:18:14,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000734065] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:18:14,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:18:14,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-18 22:18:14,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949548342] [2023-12-18 22:18:14,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:18:14,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-18 22:18:14,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:18:14,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-18 22:18:14,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-18 22:18:14,583 INFO L87 Difference]: Start difference. First operand 3818 states and 6510 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 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) [2023-12-18 22:18:15,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:18:15,337 INFO L93 Difference]: Finished difference Result 6913 states and 11211 transitions. [2023-12-18 22:18:15,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-18 22:18:15,338 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 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 61 [2023-12-18 22:18:15,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:18:15,355 INFO L225 Difference]: With dead ends: 6913 [2023-12-18 22:18:15,355 INFO L226 Difference]: Without dead ends: 5225 [2023-12-18 22:18:15,361 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-12-18 22:18:15,362 INFO L413 NwaCegarLoop]: 4142 mSDtfsCounter, 4472 mSDsluCounter, 12167 mSDsCounter, 0 mSdLazyCounter, 808 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4497 SdHoareTripleChecker+Valid, 16309 SdHoareTripleChecker+Invalid, 875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 808 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-18 22:18:15,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4497 Valid, 16309 Invalid, 875 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 808 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-18 22:18:15,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5225 states. [2023-12-18 22:18:15,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5225 to 4690. [2023-12-18 22:18:15,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4690 states, 4236 states have (on average 1.674929178470255) internal successors, (7095), 4271 states have internal predecessors, (7095), 272 states have call successors, (272), 156 states have call predecessors, (272), 180 states have return successors, (397), 278 states have call predecessors, (397), 272 states have call successors, (397) [2023-12-18 22:18:15,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4690 states to 4690 states and 7764 transitions. [2023-12-18 22:18:15,498 INFO L78 Accepts]: Start accepts. Automaton has 4690 states and 7764 transitions. Word has length 61 [2023-12-18 22:18:15,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:18:15,498 INFO L495 AbstractCegarLoop]: Abstraction has 4690 states and 7764 transitions. [2023-12-18 22:18:15,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 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) [2023-12-18 22:18:15,498 INFO L276 IsEmpty]: Start isEmpty. Operand 4690 states and 7764 transitions. [2023-12-18 22:18:15,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-18 22:18:15,503 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:18:15,503 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:18:15,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-18 22:18:15,503 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:18:15,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:18:15,504 INFO L85 PathProgramCache]: Analyzing trace with hash -2042674346, now seen corresponding path program 1 times [2023-12-18 22:18:15,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:18:15,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028118982] [2023-12-18 22:18:15,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:18:15,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:18:15,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:15,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:18:15,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:15,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-18 22:18:15,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:15,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-18 22:18:15,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:15,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-18 22:18:15,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:15,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-18 22:18:15,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:15,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-18 22:18:15,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:15,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-18 22:18:15,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:15,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-18 22:18:15,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:15,588 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-18 22:18:15,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:18:15,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028118982] [2023-12-18 22:18:15,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028118982] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 22:18:15,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1138142642] [2023-12-18 22:18:15,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:18:15,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 22:18:15,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 22:18:15,591 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 22:18:15,609 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-18 22:18:15,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:15,716 INFO L262 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-18 22:18:15,721 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 22:18:15,771 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-18 22:18:15,771 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-18 22:18:15,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1138142642] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:18:15,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-18 22:18:15,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-12-18 22:18:15,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262210020] [2023-12-18 22:18:15,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:18:15,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 22:18:15,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:18:15,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 22:18:15,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:18:15,773 INFO L87 Difference]: Start difference. First operand 4690 states and 7764 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-18 22:18:15,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:18:15,937 INFO L93 Difference]: Finished difference Result 9693 states and 15244 transitions. [2023-12-18 22:18:15,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 22:18:15,938 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 99 [2023-12-18 22:18:15,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:18:15,959 INFO L225 Difference]: With dead ends: 9693 [2023-12-18 22:18:15,959 INFO L226 Difference]: Without dead ends: 7133 [2023-12-18 22:18:15,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:18:15,969 INFO L413 NwaCegarLoop]: 4114 mSDtfsCounter, 4092 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4092 SdHoareTripleChecker+Valid, 4254 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 22:18:15,969 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4092 Valid, 4254 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 22:18:16,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7133 states. [2023-12-18 22:18:16,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7133 to 7105. [2023-12-18 22:18:16,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7105 states, 6237 states have (on average 1.6091069424402757) internal successors, (10036), 6305 states have internal predecessors, (10036), 510 states have call successors, (510), 308 states have call predecessors, (510), 356 states have return successors, (745), 507 states have call predecessors, (745), 510 states have call successors, (745) [2023-12-18 22:18:16,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7105 states to 7105 states and 11291 transitions. [2023-12-18 22:18:16,216 INFO L78 Accepts]: Start accepts. Automaton has 7105 states and 11291 transitions. Word has length 99 [2023-12-18 22:18:16,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:18:16,216 INFO L495 AbstractCegarLoop]: Abstraction has 7105 states and 11291 transitions. [2023-12-18 22:18:16,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-18 22:18:16,216 INFO L276 IsEmpty]: Start isEmpty. Operand 7105 states and 11291 transitions. [2023-12-18 22:18:16,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-18 22:18:16,223 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:18:16,223 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:18:16,244 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-18 22:18:16,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 22:18:16,429 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:18:16,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:18:16,429 INFO L85 PathProgramCache]: Analyzing trace with hash -1877378954, now seen corresponding path program 1 times [2023-12-18 22:18:16,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:18:16,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333658603] [2023-12-18 22:18:16,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:18:16,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:18:16,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:16,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:18:16,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:16,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-18 22:18:16,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:16,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-18 22:18:16,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:16,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-18 22:18:16,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:16,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-18 22:18:16,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:16,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-18 22:18:16,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:16,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-18 22:18:16,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:16,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-18 22:18:16,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:16,522 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-18 22:18:16,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:18:16,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333658603] [2023-12-18 22:18:16,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333658603] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 22:18:16,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1712021603] [2023-12-18 22:18:16,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:18:16,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 22:18:16,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 22:18:16,524 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 22:18:16,553 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-18 22:18:16,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:16,631 INFO L262 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-18 22:18:16,636 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 22:18:16,658 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-12-18 22:18:16,658 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-18 22:18:16,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1712021603] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:18:16,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-18 22:18:16,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-18 22:18:16,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168214441] [2023-12-18 22:18:16,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:18:16,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 22:18:16,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:18:16,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 22:18:16,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:18:16,661 INFO L87 Difference]: Start difference. First operand 7105 states and 11291 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-18 22:18:16,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:18:16,888 INFO L93 Difference]: Finished difference Result 16767 states and 25811 transitions. [2023-12-18 22:18:16,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 22:18:16,889 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 99 [2023-12-18 22:18:16,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:18:16,922 INFO L225 Difference]: With dead ends: 16767 [2023-12-18 22:18:16,922 INFO L226 Difference]: Without dead ends: 11793 [2023-12-18 22:18:16,936 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:18:16,938 INFO L413 NwaCegarLoop]: 4254 mSDtfsCounter, 145 mSDsluCounter, 4113 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 8367 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 22:18:16,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 8367 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 22:18:16,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11793 states. [2023-12-18 22:18:17,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11793 to 11793. [2023-12-18 22:18:17,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11793 states, 10112 states have (on average 1.5505340189873418) internal successors, (15679), 10229 states have internal predecessors, (15679), 975 states have call successors, (975), 608 states have call predecessors, (975), 704 states have return successors, (1596), 987 states have call predecessors, (1596), 975 states have call successors, (1596) [2023-12-18 22:18:17,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11793 states to 11793 states and 18250 transitions. [2023-12-18 22:18:17,254 INFO L78 Accepts]: Start accepts. Automaton has 11793 states and 18250 transitions. Word has length 99 [2023-12-18 22:18:17,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:18:17,255 INFO L495 AbstractCegarLoop]: Abstraction has 11793 states and 18250 transitions. [2023-12-18 22:18:17,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-18 22:18:17,256 INFO L276 IsEmpty]: Start isEmpty. Operand 11793 states and 18250 transitions. [2023-12-18 22:18:17,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-12-18 22:18:17,395 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:18:17,396 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:18:17,424 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-18 22:18:17,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-18 22:18:17,619 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:18:17,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:18:17,620 INFO L85 PathProgramCache]: Analyzing trace with hash -1335572908, now seen corresponding path program 1 times [2023-12-18 22:18:17,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:18:17,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096741442] [2023-12-18 22:18:17,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:18:17,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:18:17,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:17,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:18:17,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:17,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-18 22:18:17,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:17,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-18 22:18:17,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:17,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-18 22:18:17,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:17,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-18 22:18:17,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:17,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-18 22:18:17,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:17,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-18 22:18:17,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:17,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-18 22:18:17,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:17,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-18 22:18:17,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:17,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-12-18 22:18:17,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:17,707 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-12-18 22:18:17,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:18:17,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096741442] [2023-12-18 22:18:17,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096741442] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 22:18:17,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1689368522] [2023-12-18 22:18:17,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:18:17,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 22:18:17,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 22:18:17,709 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 22:18:17,738 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-18 22:18:17,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:17,803 INFO L262 TraceCheckSpWp]: Trace formula consists of 483 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-18 22:18:17,805 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 22:18:17,907 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-12-18 22:18:17,907 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-18 22:18:17,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1689368522] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:18:17,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-18 22:18:17,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-12-18 22:18:17,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809848049] [2023-12-18 22:18:17,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:18:17,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 22:18:17,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:18:17,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 22:18:17,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:18:17,908 INFO L87 Difference]: Start difference. First operand 11793 states and 18250 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-18 22:18:18,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:18:18,351 INFO L93 Difference]: Finished difference Result 30733 states and 46555 transitions. [2023-12-18 22:18:18,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 22:18:18,352 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 127 [2023-12-18 22:18:18,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:18:18,413 INFO L225 Difference]: With dead ends: 30733 [2023-12-18 22:18:18,413 INFO L226 Difference]: Without dead ends: 21075 [2023-12-18 22:18:18,447 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:18:18,449 INFO L413 NwaCegarLoop]: 4117 mSDtfsCounter, 4053 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4053 SdHoareTripleChecker+Valid, 4257 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 22:18:18,450 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4053 Valid, 4257 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 22:18:18,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21075 states. [2023-12-18 22:18:19,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21075 to 20969. [2023-12-18 22:18:19,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20969 states, 17708 states have (on average 1.5070589564038852) internal successors, (26687), 17939 states have internal predecessors, (26687), 1869 states have call successors, (1869), 1198 states have call predecessors, (1869), 1390 states have return successors, (3038), 1863 states have call predecessors, (3038), 1869 states have call successors, (3038) [2023-12-18 22:18:19,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20969 states to 20969 states and 31594 transitions. [2023-12-18 22:18:19,368 INFO L78 Accepts]: Start accepts. Automaton has 20969 states and 31594 transitions. Word has length 127 [2023-12-18 22:18:19,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:18:19,368 INFO L495 AbstractCegarLoop]: Abstraction has 20969 states and 31594 transitions. [2023-12-18 22:18:19,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-18 22:18:19,369 INFO L276 IsEmpty]: Start isEmpty. Operand 20969 states and 31594 transitions. [2023-12-18 22:18:19,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-18 22:18:19,419 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:18:19,420 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:18:19,441 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-18 22:18:19,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 22:18:19,625 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:18:19,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:18:19,626 INFO L85 PathProgramCache]: Analyzing trace with hash 791512030, now seen corresponding path program 1 times [2023-12-18 22:18:19,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:18:19,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679243912] [2023-12-18 22:18:19,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:18:19,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:18:19,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:19,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:18:19,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:19,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-18 22:18:19,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:19,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-18 22:18:19,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:19,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-18 22:18:19,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:19,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-18 22:18:19,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:19,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-12-18 22:18:19,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:19,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-18 22:18:19,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:19,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-18 22:18:19,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:19,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-18 22:18:19,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:19,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-18 22:18:19,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:19,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-12-18 22:18:19,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:19,729 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-12-18 22:18:19,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:18:19,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679243912] [2023-12-18 22:18:19,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679243912] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 22:18:19,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1479422173] [2023-12-18 22:18:19,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:18:19,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 22:18:19,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 22:18:19,744 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 22:18:19,790 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-18 22:18:19,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:19,858 INFO L262 TraceCheckSpWp]: Trace formula consists of 524 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-18 22:18:19,865 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 22:18:19,915 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-18 22:18:19,915 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-18 22:18:19,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1479422173] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:18:19,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-18 22:18:19,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-18 22:18:19,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762907210] [2023-12-18 22:18:19,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:18:19,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 22:18:19,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:18:19,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 22:18:19,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:18:19,916 INFO L87 Difference]: Start difference. First operand 20969 states and 31594 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-18 22:18:20,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:18:20,484 INFO L93 Difference]: Finished difference Result 33443 states and 50451 transitions. [2023-12-18 22:18:20,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 22:18:20,485 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 143 [2023-12-18 22:18:20,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:18:20,542 INFO L225 Difference]: With dead ends: 33443 [2023-12-18 22:18:20,542 INFO L226 Difference]: Without dead ends: 18715 [2023-12-18 22:18:20,576 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:18:20,576 INFO L413 NwaCegarLoop]: 4114 mSDtfsCounter, 4086 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4086 SdHoareTripleChecker+Valid, 4142 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 22:18:20,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4086 Valid, 4142 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 22:18:20,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18715 states. [2023-12-18 22:18:21,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18715 to 14099. [2023-12-18 22:18:21,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14099 states, 12046 states have (on average 1.4857214012950357) internal successors, (17897), 12167 states have internal predecessors, (17897), 1161 states have call successors, (1161), 794 states have call predecessors, (1161), 890 states have return successors, (1648), 1153 states have call predecessors, (1648), 1161 states have call successors, (1648) [2023-12-18 22:18:21,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14099 states to 14099 states and 20706 transitions. [2023-12-18 22:18:21,194 INFO L78 Accepts]: Start accepts. Automaton has 14099 states and 20706 transitions. Word has length 143 [2023-12-18 22:18:21,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:18:21,195 INFO L495 AbstractCegarLoop]: Abstraction has 14099 states and 20706 transitions. [2023-12-18 22:18:21,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-18 22:18:21,195 INFO L276 IsEmpty]: Start isEmpty. Operand 14099 states and 20706 transitions. [2023-12-18 22:18:21,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-18 22:18:21,215 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:18:21,216 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:18:21,220 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-18 22:18:21,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 22:18:21,420 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:18:21,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:18:21,421 INFO L85 PathProgramCache]: Analyzing trace with hash -2075302660, now seen corresponding path program 1 times [2023-12-18 22:18:21,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:18:21,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565038004] [2023-12-18 22:18:21,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:18:21,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:18:21,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:21,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:18:21,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:21,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-18 22:18:21,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:21,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-18 22:18:21,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:21,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-18 22:18:21,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:21,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-18 22:18:21,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:21,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-12-18 22:18:21,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:21,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-18 22:18:21,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:21,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-18 22:18:21,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:21,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-18 22:18:21,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:21,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-18 22:18:21,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:21,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-12-18 22:18:21,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:21,588 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-12-18 22:18:21,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:18:21,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565038004] [2023-12-18 22:18:21,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565038004] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 22:18:21,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1325008695] [2023-12-18 22:18:21,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:18:21,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 22:18:21,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 22:18:21,604 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 22:18:21,632 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-18 22:18:21,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:21,701 INFO L262 TraceCheckSpWp]: Trace formula consists of 515 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-18 22:18:21,704 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 22:18:21,734 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-12-18 22:18:21,734 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-18 22:18:21,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1325008695] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:18:21,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-18 22:18:21,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-18 22:18:21,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799904541] [2023-12-18 22:18:21,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:18:21,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 22:18:21,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:18:21,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 22:18:21,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:18:21,737 INFO L87 Difference]: Start difference. First operand 14099 states and 20706 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-18 22:18:22,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:18:22,057 INFO L93 Difference]: Finished difference Result 23244 states and 33469 transitions. [2023-12-18 22:18:22,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 22:18:22,072 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 143 [2023-12-18 22:18:22,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:18:22,128 INFO L225 Difference]: With dead ends: 23244 [2023-12-18 22:18:22,128 INFO L226 Difference]: Without dead ends: 14923 [2023-12-18 22:18:22,146 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:18:22,147 INFO L413 NwaCegarLoop]: 4143 mSDtfsCounter, 4079 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4079 SdHoareTripleChecker+Valid, 4288 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 22:18:22,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4079 Valid, 4288 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 22:18:22,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14923 states. [2023-12-18 22:18:22,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14923 to 14857. [2023-12-18 22:18:22,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14857 states, 12716 states have (on average 1.4599716892104435) internal successors, (18565), 12837 states have internal predecessors, (18565), 1183 states have call successors, (1183), 860 states have call predecessors, (1183), 956 states have return successors, (1736), 1175 states have call predecessors, (1736), 1183 states have call successors, (1736) [2023-12-18 22:18:22,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14857 states to 14857 states and 21484 transitions. [2023-12-18 22:18:22,594 INFO L78 Accepts]: Start accepts. Automaton has 14857 states and 21484 transitions. Word has length 143 [2023-12-18 22:18:22,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:18:22,594 INFO L495 AbstractCegarLoop]: Abstraction has 14857 states and 21484 transitions. [2023-12-18 22:18:22,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-18 22:18:22,594 INFO L276 IsEmpty]: Start isEmpty. Operand 14857 states and 21484 transitions. [2023-12-18 22:18:22,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-12-18 22:18:22,613 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:18:22,613 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:18:22,618 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-18 22:18:22,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-18 22:18:22,817 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:18:22,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:18:22,818 INFO L85 PathProgramCache]: Analyzing trace with hash -1556193784, now seen corresponding path program 1 times [2023-12-18 22:18:22,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:18:22,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864582750] [2023-12-18 22:18:22,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:18:22,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:18:22,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:22,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:18:22,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:22,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-18 22:18:22,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:22,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-18 22:18:22,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:22,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-18 22:18:22,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:22,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-18 22:18:22,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:22,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-18 22:18:22,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:22,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-18 22:18:22,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:22,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-18 22:18:22,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:22,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-18 22:18:22,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:22,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-18 22:18:22,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:22,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-12-18 22:18:22,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:22,903 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-12-18 22:18:22,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:18:22,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864582750] [2023-12-18 22:18:22,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864582750] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 22:18:22,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [871582580] [2023-12-18 22:18:22,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:18:22,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 22:18:22,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 22:18:22,904 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 22:18:22,925 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-18 22:18:23,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:23,022 INFO L262 TraceCheckSpWp]: Trace formula consists of 516 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-18 22:18:23,024 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 22:18:23,112 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-12-18 22:18:23,112 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-18 22:18:23,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [871582580] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:18:23,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-18 22:18:23,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-18 22:18:23,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128945785] [2023-12-18 22:18:23,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:18:23,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 22:18:23,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:18:23,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 22:18:23,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:18:23,114 INFO L87 Difference]: Start difference. First operand 14857 states and 21484 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-18 22:18:23,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:18:23,656 INFO L93 Difference]: Finished difference Result 39509 states and 55950 transitions. [2023-12-18 22:18:23,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 22:18:23,657 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 144 [2023-12-18 22:18:23,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:18:23,731 INFO L225 Difference]: With dead ends: 39509 [2023-12-18 22:18:23,731 INFO L226 Difference]: Without dead ends: 26789 [2023-12-18 22:18:23,759 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:18:23,759 INFO L413 NwaCegarLoop]: 4253 mSDtfsCounter, 135 mSDsluCounter, 4112 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 8365 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 22:18:23,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 8365 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 22:18:23,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26789 states. [2023-12-18 22:18:24,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26789 to 26743. [2023-12-18 22:18:24,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26743 states, 22644 states have (on average 1.4140169581346052) internal successors, (32019), 22885 states have internal predecessors, (32019), 2245 states have call successors, (2245), 1660 states have call predecessors, (2245), 1852 states have return successors, (3798), 2229 states have call predecessors, (3798), 2245 states have call successors, (3798) [2023-12-18 22:18:24,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26743 states to 26743 states and 38062 transitions. [2023-12-18 22:18:24,808 INFO L78 Accepts]: Start accepts. Automaton has 26743 states and 38062 transitions. Word has length 144 [2023-12-18 22:18:24,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:18:24,808 INFO L495 AbstractCegarLoop]: Abstraction has 26743 states and 38062 transitions. [2023-12-18 22:18:24,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-18 22:18:24,809 INFO L276 IsEmpty]: Start isEmpty. Operand 26743 states and 38062 transitions. [2023-12-18 22:18:24,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-12-18 22:18:24,877 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:18:24,878 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:18:24,886 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-18 22:18:25,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 22:18:25,079 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:18:25,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:18:25,080 INFO L85 PathProgramCache]: Analyzing trace with hash 125794537, now seen corresponding path program 1 times [2023-12-18 22:18:25,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:18:25,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539572949] [2023-12-18 22:18:25,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:18:25,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:18:25,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:25,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:18:25,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:25,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-18 22:18:25,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:25,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-18 22:18:25,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:25,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-18 22:18:25,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:25,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-18 22:18:25,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:25,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-18 22:18:25,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:25,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-18 22:18:25,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:25,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-18 22:18:25,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:25,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-18 22:18:25,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:25,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-18 22:18:25,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:25,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-12-18 22:18:25,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:25,240 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-12-18 22:18:25,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:18:25,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539572949] [2023-12-18 22:18:25,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539572949] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 22:18:25,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [498304633] [2023-12-18 22:18:25,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:18:25,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 22:18:25,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 22:18:25,257 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 22:18:25,294 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-18 22:18:25,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:25,378 INFO L262 TraceCheckSpWp]: Trace formula consists of 516 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-18 22:18:25,380 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 22:18:25,441 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-18 22:18:25,442 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-18 22:18:25,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [498304633] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:18:25,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-18 22:18:25,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-18 22:18:25,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586980138] [2023-12-18 22:18:25,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:18:25,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 22:18:25,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:18:25,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 22:18:25,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:18:25,444 INFO L87 Difference]: Start difference. First operand 26743 states and 38062 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-18 22:18:26,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:18:26,182 INFO L93 Difference]: Finished difference Result 52491 states and 75074 transitions. [2023-12-18 22:18:26,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 22:18:26,183 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 144 [2023-12-18 22:18:26,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:18:26,255 INFO L225 Difference]: With dead ends: 52491 [2023-12-18 22:18:26,255 INFO L226 Difference]: Without dead ends: 27885 [2023-12-18 22:18:26,299 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:18:26,300 INFO L413 NwaCegarLoop]: 4108 mSDtfsCounter, 4065 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4065 SdHoareTripleChecker+Valid, 4135 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 22:18:26,300 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4065 Valid, 4135 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 22:18:26,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27885 states. [2023-12-18 22:18:27,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27885 to 27841. [2023-12-18 22:18:27,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27841 states, 23682 states have (on average 1.3691833460011824) internal successors, (32425), 23923 states have internal predecessors, (32425), 2245 states have call successors, (2245), 1720 states have call predecessors, (2245), 1912 states have return successors, (3754), 2229 states have call predecessors, (3754), 2245 states have call successors, (3754) [2023-12-18 22:18:27,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27841 states to 27841 states and 38424 transitions. [2023-12-18 22:18:27,404 INFO L78 Accepts]: Start accepts. Automaton has 27841 states and 38424 transitions. Word has length 144 [2023-12-18 22:18:27,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:18:27,404 INFO L495 AbstractCegarLoop]: Abstraction has 27841 states and 38424 transitions. [2023-12-18 22:18:27,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-18 22:18:27,404 INFO L276 IsEmpty]: Start isEmpty. Operand 27841 states and 38424 transitions. [2023-12-18 22:18:27,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-12-18 22:18:27,437 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:18:27,437 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:18:27,458 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-18 22:18:27,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 22:18:27,643 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:18:27,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:18:27,644 INFO L85 PathProgramCache]: Analyzing trace with hash -782339540, now seen corresponding path program 1 times [2023-12-18 22:18:27,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:18:27,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463187655] [2023-12-18 22:18:27,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:18:27,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:18:27,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:27,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:18:27,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:27,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-18 22:18:27,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:27,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-18 22:18:27,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:27,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-18 22:18:27,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:27,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-18 22:18:27,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:27,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-18 22:18:27,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:27,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-18 22:18:27,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:27,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-18 22:18:27,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:27,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-18 22:18:27,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:27,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-18 22:18:27,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:27,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-12-18 22:18:27,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:27,742 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2023-12-18 22:18:27,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:18:27,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463187655] [2023-12-18 22:18:27,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463187655] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 22:18:27,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372682011] [2023-12-18 22:18:27,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:18:27,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 22:18:27,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 22:18:27,744 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 22:18:27,767 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-18 22:18:27,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:27,838 INFO L262 TraceCheckSpWp]: Trace formula consists of 510 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-18 22:18:27,840 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 22:18:27,854 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-18 22:18:27,854 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-18 22:18:27,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [372682011] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:18:27,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-18 22:18:27,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-18 22:18:27,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029527798] [2023-12-18 22:18:27,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:18:27,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 22:18:27,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:18:27,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 22:18:27,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:18:27,856 INFO L87 Difference]: Start difference. First operand 27841 states and 38424 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-18 22:18:29,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:18:29,275 INFO L93 Difference]: Finished difference Result 75539 states and 103548 transitions. [2023-12-18 22:18:29,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 22:18:29,275 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 144 [2023-12-18 22:18:29,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:18:29,432 INFO L225 Difference]: With dead ends: 75539 [2023-12-18 22:18:29,432 INFO L226 Difference]: Without dead ends: 49843 [2023-12-18 22:18:29,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:18:29,471 INFO L413 NwaCegarLoop]: 4247 mSDtfsCounter, 139 mSDsluCounter, 4107 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 8354 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 22:18:29,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 8354 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 22:18:29,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49843 states. [2023-12-18 22:18:31,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49843 to 49841. [2023-12-18 22:18:31,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49841 states, 41974 states have (on average 1.333468337542288) internal successors, (55971), 42455 states have internal predecessors, (55971), 4265 states have call successors, (4265), 3216 states have call predecessors, (4265), 3600 states have return successors, (8200), 4233 states have call predecessors, (8200), 4265 states have call successors, (8200) [2023-12-18 22:18:31,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49841 states to 49841 states and 68436 transitions. [2023-12-18 22:18:31,575 INFO L78 Accepts]: Start accepts. Automaton has 49841 states and 68436 transitions. Word has length 144 [2023-12-18 22:18:31,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:18:31,576 INFO L495 AbstractCegarLoop]: Abstraction has 49841 states and 68436 transitions. [2023-12-18 22:18:31,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-18 22:18:31,576 INFO L276 IsEmpty]: Start isEmpty. Operand 49841 states and 68436 transitions. [2023-12-18 22:18:31,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-18 22:18:31,626 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:18:31,626 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:18:31,631 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-18 22:18:31,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-12-18 22:18:31,831 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:18:31,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:18:31,831 INFO L85 PathProgramCache]: Analyzing trace with hash -873894743, now seen corresponding path program 1 times [2023-12-18 22:18:31,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:18:31,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514860855] [2023-12-18 22:18:31,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:18:31,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:18:31,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:31,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:18:31,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:31,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-18 22:18:31,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:31,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-18 22:18:31,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:31,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-18 22:18:31,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:31,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-18 22:18:31,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:31,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-18 22:18:31,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:31,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-18 22:18:31,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:31,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-18 22:18:31,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:31,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-12-18 22:18:31,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:31,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-18 22:18:31,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:31,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-12-18 22:18:31,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:31,927 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-12-18 22:18:31,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:18:31,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514860855] [2023-12-18 22:18:31,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514860855] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 22:18:31,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [375107620] [2023-12-18 22:18:31,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:18:31,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 22:18:31,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 22:18:31,940 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 22:18:31,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-18 22:18:32,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:32,028 INFO L262 TraceCheckSpWp]: Trace formula consists of 518 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-18 22:18:32,030 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 22:18:32,060 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-12-18 22:18:32,061 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-18 22:18:32,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [375107620] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:18:32,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-18 22:18:32,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-18 22:18:32,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778308052] [2023-12-18 22:18:32,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:18:32,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 22:18:32,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:18:32,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 22:18:32,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:18:32,066 INFO L87 Difference]: Start difference. First operand 49841 states and 68436 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-18 22:18:33,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:18:33,555 INFO L93 Difference]: Finished difference Result 87149 states and 119166 transitions. [2023-12-18 22:18:33,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 22:18:33,556 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 145 [2023-12-18 22:18:33,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:18:33,708 INFO L225 Difference]: With dead ends: 87149 [2023-12-18 22:18:33,708 INFO L226 Difference]: Without dead ends: 51011 [2023-12-18 22:18:33,847 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:18:33,853 INFO L413 NwaCegarLoop]: 4134 mSDtfsCounter, 4085 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4085 SdHoareTripleChecker+Valid, 4275 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 22:18:33,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4085 Valid, 4275 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 22:18:33,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51011 states. [2023-12-18 22:18:35,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51011 to 49721. [2023-12-18 22:18:35,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49721 states, 41854 states have (on average 1.324389544607445) internal successors, (55431), 42335 states have internal predecessors, (55431), 4265 states have call successors, (4265), 3216 states have call predecessors, (4265), 3600 states have return successors, (8200), 4233 states have call predecessors, (8200), 4265 states have call successors, (8200) [2023-12-18 22:18:35,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49721 states to 49721 states and 67896 transitions. [2023-12-18 22:18:35,778 INFO L78 Accepts]: Start accepts. Automaton has 49721 states and 67896 transitions. Word has length 145 [2023-12-18 22:18:35,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:18:35,778 INFO L495 AbstractCegarLoop]: Abstraction has 49721 states and 67896 transitions. [2023-12-18 22:18:35,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-18 22:18:35,778 INFO L276 IsEmpty]: Start isEmpty. Operand 49721 states and 67896 transitions. [2023-12-18 22:18:35,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-18 22:18:35,825 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:18:35,825 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:18:35,844 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-18 22:18:36,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-18 22:18:36,031 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:18:36,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:18:36,032 INFO L85 PathProgramCache]: Analyzing trace with hash 133090187, now seen corresponding path program 1 times [2023-12-18 22:18:36,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:18:36,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551360045] [2023-12-18 22:18:36,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:18:36,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:18:36,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:36,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:18:36,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:36,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-18 22:18:36,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:36,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-18 22:18:36,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:36,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-18 22:18:36,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:36,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-18 22:18:36,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:36,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-18 22:18:36,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:36,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-18 22:18:36,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:36,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-18 22:18:36,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:36,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-18 22:18:36,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:36,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-18 22:18:36,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:36,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-12-18 22:18:36,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:36,108 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2023-12-18 22:18:36,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:18:36,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551360045] [2023-12-18 22:18:36,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551360045] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 22:18:36,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [623334008] [2023-12-18 22:18:36,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:18:36,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 22:18:36,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 22:18:36,110 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 22:18:36,113 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-18 22:18:36,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:36,183 INFO L262 TraceCheckSpWp]: Trace formula consists of 515 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-18 22:18:36,185 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 22:18:36,217 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-12-18 22:18:36,217 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-18 22:18:36,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [623334008] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:18:36,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-18 22:18:36,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-18 22:18:36,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976708623] [2023-12-18 22:18:36,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:18:36,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 22:18:36,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:18:36,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 22:18:36,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:18:36,218 INFO L87 Difference]: Start difference. First operand 49721 states and 67896 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-18 22:18:37,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:18:37,595 INFO L93 Difference]: Finished difference Result 87253 states and 118366 transitions. [2023-12-18 22:18:37,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 22:18:37,596 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 145 [2023-12-18 22:18:37,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:18:37,720 INFO L225 Difference]: With dead ends: 87253 [2023-12-18 22:18:37,720 INFO L226 Difference]: Without dead ends: 50443 [2023-12-18 22:18:37,765 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:18:37,766 INFO L413 NwaCegarLoop]: 4123 mSDtfsCounter, 4085 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4085 SdHoareTripleChecker+Valid, 4262 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 22:18:37,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4085 Valid, 4262 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 22:18:37,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50443 states. [2023-12-18 22:18:39,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50443 to 49721. [2023-12-18 22:18:39,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49721 states, 41854 states have (on average 1.3172217709179528) internal successors, (55131), 42335 states have internal predecessors, (55131), 4265 states have call successors, (4265), 3216 states have call predecessors, (4265), 3600 states have return successors, (8200), 4233 states have call predecessors, (8200), 4265 states have call successors, (8200) [2023-12-18 22:18:39,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49721 states to 49721 states and 67596 transitions. [2023-12-18 22:18:39,814 INFO L78 Accepts]: Start accepts. Automaton has 49721 states and 67596 transitions. Word has length 145 [2023-12-18 22:18:39,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:18:39,814 INFO L495 AbstractCegarLoop]: Abstraction has 49721 states and 67596 transitions. [2023-12-18 22:18:39,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-18 22:18:39,815 INFO L276 IsEmpty]: Start isEmpty. Operand 49721 states and 67596 transitions. [2023-12-18 22:18:39,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-18 22:18:39,856 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:18:39,856 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:18:39,861 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-18 22:18:40,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-18 22:18:40,061 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:18:40,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:18:40,061 INFO L85 PathProgramCache]: Analyzing trace with hash -40298357, now seen corresponding path program 1 times [2023-12-18 22:18:40,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:18:40,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950018843] [2023-12-18 22:18:40,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:18:40,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:18:40,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:40,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:18:40,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:40,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-18 22:18:40,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:40,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-18 22:18:40,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:40,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-18 22:18:40,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:40,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-18 22:18:40,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:40,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-18 22:18:40,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:40,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-18 22:18:40,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:40,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-18 22:18:40,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:40,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-18 22:18:40,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:40,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-18 22:18:40,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:40,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-12-18 22:18:40,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:40,117 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2023-12-18 22:18:40,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:18:40,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950018843] [2023-12-18 22:18:40,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950018843] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:18:40,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:18:40,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-18 22:18:40,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141104276] [2023-12-18 22:18:40,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:18:40,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-18 22:18:40,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:18:40,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-18 22:18:40,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-18 22:18:40,119 INFO L87 Difference]: Start difference. First operand 49721 states and 67596 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-18 22:18:41,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:18:41,657 INFO L93 Difference]: Finished difference Result 95091 states and 127259 transitions. [2023-12-18 22:18:41,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-18 22:18:41,657 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 145 [2023-12-18 22:18:41,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:18:41,763 INFO L225 Difference]: With dead ends: 95091 [2023-12-18 22:18:41,763 INFO L226 Difference]: Without dead ends: 47513 [2023-12-18 22:18:41,815 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-18 22:18:41,816 INFO L413 NwaCegarLoop]: 4059 mSDtfsCounter, 273 mSDsluCounter, 11974 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 16033 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-18 22:18:41,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [289 Valid, 16033 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-18 22:18:41,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47513 states. [2023-12-18 22:18:43,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47513 to 44823. [2023-12-18 22:18:43,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44823 states, 38040 states have (on average 1.3237381703470033) internal successors, (50355), 38933 states have internal predecessors, (50355), 3253 states have call successors, (3253), 2472 states have call predecessors, (3253), 3528 states have return successors, (6773), 3449 states have call predecessors, (6773), 3253 states have call successors, (6773) [2023-12-18 22:18:43,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44823 states to 44823 states and 60381 transitions. [2023-12-18 22:18:43,566 INFO L78 Accepts]: Start accepts. Automaton has 44823 states and 60381 transitions. Word has length 145 [2023-12-18 22:18:43,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:18:43,566 INFO L495 AbstractCegarLoop]: Abstraction has 44823 states and 60381 transitions. [2023-12-18 22:18:43,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-18 22:18:43,566 INFO L276 IsEmpty]: Start isEmpty. Operand 44823 states and 60381 transitions. [2023-12-18 22:18:43,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-18 22:18:43,605 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:18:43,605 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:18:43,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-18 22:18:43,605 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:18:43,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:18:43,606 INFO L85 PathProgramCache]: Analyzing trace with hash -2081503833, now seen corresponding path program 1 times [2023-12-18 22:18:43,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:18:43,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831540542] [2023-12-18 22:18:43,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:18:43,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:18:43,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:43,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:18:43,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:43,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-18 22:18:43,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:43,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-18 22:18:43,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:43,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-18 22:18:43,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:43,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-18 22:18:43,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:43,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-18 22:18:43,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:43,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-18 22:18:43,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:43,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-18 22:18:43,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:43,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-12-18 22:18:43,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:43,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-18 22:18:43,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:43,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-12-18 22:18:43,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:43,671 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2023-12-18 22:18:43,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:18:43,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831540542] [2023-12-18 22:18:43,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831540542] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:18:43,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:18:43,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-18 22:18:43,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180407144] [2023-12-18 22:18:43,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:18:43,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-18 22:18:43,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:18:43,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-18 22:18:43,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-18 22:18:43,672 INFO L87 Difference]: Start difference. First operand 44823 states and 60381 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-18 22:18:44,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:18:44,862 INFO L93 Difference]: Finished difference Result 79543 states and 106038 transitions. [2023-12-18 22:18:44,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-18 22:18:44,862 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 145 [2023-12-18 22:18:44,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:18:44,946 INFO L225 Difference]: With dead ends: 79543 [2023-12-18 22:18:44,947 INFO L226 Difference]: Without dead ends: 36855 [2023-12-18 22:18:44,997 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-18 22:18:44,997 INFO L413 NwaCegarLoop]: 4058 mSDtfsCounter, 273 mSDsluCounter, 11973 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 16031 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-18 22:18:44,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [289 Valid, 16031 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-18 22:18:45,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36855 states. [2023-12-18 22:18:46,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36855 to 34305. [2023-12-18 22:18:46,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34305 states, 29268 states have (on average 1.3431392647259806) internal successors, (39311), 29905 states have internal predecessors, (39311), 2427 states have call successors, (2427), 1856 states have call predecessors, (2427), 2608 states have return successors, (4799), 2559 states have call predecessors, (4799), 2427 states have call successors, (4799) [2023-12-18 22:18:46,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34305 states to 34305 states and 46537 transitions. [2023-12-18 22:18:46,409 INFO L78 Accepts]: Start accepts. Automaton has 34305 states and 46537 transitions. Word has length 145 [2023-12-18 22:18:46,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:18:46,409 INFO L495 AbstractCegarLoop]: Abstraction has 34305 states and 46537 transitions. [2023-12-18 22:18:46,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-18 22:18:46,409 INFO L276 IsEmpty]: Start isEmpty. Operand 34305 states and 46537 transitions. [2023-12-18 22:18:46,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-12-18 22:18:46,435 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:18:46,435 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:18:46,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-18 22:18:46,436 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:18:46,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:18:46,436 INFO L85 PathProgramCache]: Analyzing trace with hash 213627841, now seen corresponding path program 1 times [2023-12-18 22:18:46,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:18:46,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690376602] [2023-12-18 22:18:46,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:18:46,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:18:46,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:46,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:18:46,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:46,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-18 22:18:46,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:46,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-18 22:18:46,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:46,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-18 22:18:46,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:46,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-18 22:18:46,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:46,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-18 22:18:46,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:46,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-18 22:18:46,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:46,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-18 22:18:46,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:46,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-18 22:18:46,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:46,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-18 22:18:46,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:46,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-12-18 22:18:46,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:46,506 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2023-12-18 22:18:46,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:18:46,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690376602] [2023-12-18 22:18:46,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690376602] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 22:18:46,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [929057404] [2023-12-18 22:18:46,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:18:46,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 22:18:46,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 22:18:46,521 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 22:18:46,521 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-18 22:18:46,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:46,623 INFO L262 TraceCheckSpWp]: Trace formula consists of 527 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-18 22:18:46,625 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 22:18:46,650 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-18 22:18:46,650 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-18 22:18:46,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [929057404] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:18:46,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-18 22:18:46,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-18 22:18:46,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984340219] [2023-12-18 22:18:46,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:18:46,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 22:18:46,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:18:46,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 22:18:46,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:18:46,652 INFO L87 Difference]: Start difference. First operand 34305 states and 46537 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-18 22:18:47,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:18:47,588 INFO L93 Difference]: Finished difference Result 56199 states and 77803 transitions. [2023-12-18 22:18:47,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 22:18:47,588 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 149 [2023-12-18 22:18:47,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:18:47,665 INFO L225 Difference]: With dead ends: 56199 [2023-12-18 22:18:47,665 INFO L226 Difference]: Without dead ends: 34391 [2023-12-18 22:18:47,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:18:47,702 INFO L413 NwaCegarLoop]: 4198 mSDtfsCounter, 122 mSDsluCounter, 4094 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 8292 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 22:18:47,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 8292 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 22:18:47,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34391 states. [2023-12-18 22:18:48,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34391 to 34305. [2023-12-18 22:18:48,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34305 states, 29268 states have (on average 1.319564028973623) internal successors, (38621), 29905 states have internal predecessors, (38621), 2427 states have call successors, (2427), 1856 states have call predecessors, (2427), 2608 states have return successors, (4799), 2559 states have call predecessors, (4799), 2427 states have call successors, (4799) [2023-12-18 22:18:49,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34305 states to 34305 states and 45847 transitions. [2023-12-18 22:18:49,042 INFO L78 Accepts]: Start accepts. Automaton has 34305 states and 45847 transitions. Word has length 149 [2023-12-18 22:18:49,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:18:49,043 INFO L495 AbstractCegarLoop]: Abstraction has 34305 states and 45847 transitions. [2023-12-18 22:18:49,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-18 22:18:49,043 INFO L276 IsEmpty]: Start isEmpty. Operand 34305 states and 45847 transitions. [2023-12-18 22:18:49,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-12-18 22:18:49,073 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:18:49,074 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:18:49,080 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-12-18 22:18:49,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 22:18:49,279 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:18:49,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:18:49,280 INFO L85 PathProgramCache]: Analyzing trace with hash 22552195, now seen corresponding path program 1 times [2023-12-18 22:18:49,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:18:49,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553965171] [2023-12-18 22:18:49,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:18:49,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:18:49,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:49,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:18:49,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:49,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-18 22:18:49,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:49,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-18 22:18:49,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:49,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-18 22:18:49,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:49,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-18 22:18:49,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:49,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-18 22:18:49,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:49,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-18 22:18:49,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:49,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-18 22:18:49,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:49,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-18 22:18:49,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:49,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-18 22:18:49,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:49,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-12-18 22:18:49,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:49,371 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2023-12-18 22:18:49,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:18:49,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553965171] [2023-12-18 22:18:49,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553965171] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 22:18:49,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1574107943] [2023-12-18 22:18:49,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:18:49,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 22:18:49,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 22:18:49,388 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 22:18:49,412 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-18 22:18:49,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:49,517 INFO L262 TraceCheckSpWp]: Trace formula consists of 533 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-18 22:18:49,519 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 22:18:49,552 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-18 22:18:49,552 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-18 22:18:49,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1574107943] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:18:49,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-18 22:18:49,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-18 22:18:49,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640615308] [2023-12-18 22:18:49,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:18:49,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 22:18:49,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:18:49,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 22:18:49,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:18:49,553 INFO L87 Difference]: Start difference. First operand 34305 states and 45847 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-18 22:18:50,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:18:50,381 INFO L93 Difference]: Finished difference Result 59056 states and 79662 transitions. [2023-12-18 22:18:50,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 22:18:50,382 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 149 [2023-12-18 22:18:50,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:18:50,453 INFO L225 Difference]: With dead ends: 59056 [2023-12-18 22:18:50,454 INFO L226 Difference]: Without dead ends: 29190 [2023-12-18 22:18:50,495 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:18:50,496 INFO L413 NwaCegarLoop]: 4110 mSDtfsCounter, 4100 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4100 SdHoareTripleChecker+Valid, 4136 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 22:18:50,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4100 Valid, 4136 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 22:18:50,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29190 states. [2023-12-18 22:18:51,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29190 to 28076. [2023-12-18 22:18:51,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28076 states, 24079 states have (on average 1.2930769550230492) internal successors, (31136), 24573 states have internal predecessors, (31136), 1931 states have call successors, (1931), 1480 states have call predecessors, (1931), 2064 states have return successors, (3537), 2030 states have call predecessors, (3537), 1931 states have call successors, (3537) [2023-12-18 22:18:51,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28076 states to 28076 states and 36604 transitions. [2023-12-18 22:18:51,443 INFO L78 Accepts]: Start accepts. Automaton has 28076 states and 36604 transitions. Word has length 149 [2023-12-18 22:18:51,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:18:51,443 INFO L495 AbstractCegarLoop]: Abstraction has 28076 states and 36604 transitions. [2023-12-18 22:18:51,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-18 22:18:51,443 INFO L276 IsEmpty]: Start isEmpty. Operand 28076 states and 36604 transitions. [2023-12-18 22:18:51,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-12-18 22:18:51,462 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:18:51,462 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:18:51,474 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-18 22:18:51,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 22:18:51,668 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:18:51,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:18:51,669 INFO L85 PathProgramCache]: Analyzing trace with hash 231065803, now seen corresponding path program 1 times [2023-12-18 22:18:51,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:18:51,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431406804] [2023-12-18 22:18:51,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:18:51,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:18:51,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:51,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:18:51,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:51,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-18 22:18:51,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:51,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-18 22:18:51,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:51,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-18 22:18:51,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:51,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-18 22:18:51,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:51,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-18 22:18:51,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:51,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-18 22:18:51,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:51,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-18 22:18:51,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:51,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-18 22:18:51,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:51,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-18 22:18:51,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:51,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-12-18 22:18:51,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:51,778 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2023-12-18 22:18:51,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:18:51,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431406804] [2023-12-18 22:18:51,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431406804] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 22:18:51,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1476992273] [2023-12-18 22:18:51,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:18:51,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 22:18:51,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 22:18:51,780 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 22:18:51,796 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-18 22:18:51,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:51,882 INFO L262 TraceCheckSpWp]: Trace formula consists of 527 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-18 22:18:51,885 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 22:18:51,911 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-18 22:18:51,911 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-18 22:18:51,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1476992273] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:18:51,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-18 22:18:51,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-18 22:18:51,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578410192] [2023-12-18 22:18:51,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:18:51,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 22:18:51,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:18:51,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 22:18:51,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:18:51,913 INFO L87 Difference]: Start difference. First operand 28076 states and 36604 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-18 22:18:52,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:18:52,687 INFO L93 Difference]: Finished difference Result 46492 states and 61510 transitions. [2023-12-18 22:18:52,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 22:18:52,688 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 149 [2023-12-18 22:18:52,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:18:52,751 INFO L225 Difference]: With dead ends: 46492 [2023-12-18 22:18:52,751 INFO L226 Difference]: Without dead ends: 28146 [2023-12-18 22:18:52,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:18:52,785 INFO L413 NwaCegarLoop]: 4228 mSDtfsCounter, 117 mSDsluCounter, 4093 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 8321 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 22:18:52,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 8321 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 22:18:52,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28146 states. [2023-12-18 22:18:53,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28146 to 28076. [2023-12-18 22:18:53,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28076 states, 24079 states have (on average 1.2652518792308651) internal successors, (30466), 24573 states have internal predecessors, (30466), 1931 states have call successors, (1931), 1480 states have call predecessors, (1931), 2064 states have return successors, (3537), 2030 states have call predecessors, (3537), 1931 states have call successors, (3537) [2023-12-18 22:18:53,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28076 states to 28076 states and 35934 transitions. [2023-12-18 22:18:53,800 INFO L78 Accepts]: Start accepts. Automaton has 28076 states and 35934 transitions. Word has length 149 [2023-12-18 22:18:53,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:18:53,800 INFO L495 AbstractCegarLoop]: Abstraction has 28076 states and 35934 transitions. [2023-12-18 22:18:53,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-18 22:18:53,800 INFO L276 IsEmpty]: Start isEmpty. Operand 28076 states and 35934 transitions. [2023-12-18 22:18:53,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-12-18 22:18:53,817 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:18:53,817 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:18:53,822 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-18 22:18:54,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-12-18 22:18:54,022 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:18:54,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:18:54,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1895509714, now seen corresponding path program 1 times [2023-12-18 22:18:54,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:18:54,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7373731] [2023-12-18 22:18:54,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:18:54,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:18:54,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:54,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:18:54,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:54,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-18 22:18:54,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:54,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-18 22:18:54,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:54,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-18 22:18:54,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:54,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-18 22:18:54,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:54,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-18 22:18:54,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:54,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-18 22:18:54,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:54,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-18 22:18:54,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:54,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-18 22:18:54,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:54,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-18 22:18:54,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:54,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-12-18 22:18:54,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:54,092 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2023-12-18 22:18:54,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:18:54,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7373731] [2023-12-18 22:18:54,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7373731] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 22:18:54,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1183138341] [2023-12-18 22:18:54,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:18:54,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 22:18:54,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 22:18:54,093 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 22:18:54,100 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-18 22:18:54,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:54,188 INFO L262 TraceCheckSpWp]: Trace formula consists of 529 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-18 22:18:54,190 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 22:18:54,203 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-18 22:18:54,204 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-18 22:18:54,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1183138341] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:18:54,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-18 22:18:54,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-18 22:18:54,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749140615] [2023-12-18 22:18:54,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:18:54,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 22:18:54,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:18:54,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 22:18:54,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:18:54,205 INFO L87 Difference]: Start difference. First operand 28076 states and 35934 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-18 22:18:54,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:18:54,955 INFO L93 Difference]: Finished difference Result 40654 states and 52475 transitions. [2023-12-18 22:18:54,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 22:18:54,956 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 150 [2023-12-18 22:18:54,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:18:55,015 INFO L225 Difference]: With dead ends: 40654 [2023-12-18 22:18:55,015 INFO L226 Difference]: Without dead ends: 28124 [2023-12-18 22:18:55,045 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:18:55,047 INFO L413 NwaCegarLoop]: 4219 mSDtfsCounter, 135 mSDsluCounter, 4094 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 8313 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 22:18:55,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 8313 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 22:18:55,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28124 states. [2023-12-18 22:18:55,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28124 to 28076. [2023-12-18 22:18:55,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28076 states, 24079 states have (on average 1.2547032684081565) internal successors, (30212), 24573 states have internal predecessors, (30212), 1931 states have call successors, (1931), 1480 states have call predecessors, (1931), 2064 states have return successors, (3537), 2030 states have call predecessors, (3537), 1931 states have call successors, (3537) [2023-12-18 22:18:55,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28076 states to 28076 states and 35680 transitions. [2023-12-18 22:18:55,998 INFO L78 Accepts]: Start accepts. Automaton has 28076 states and 35680 transitions. Word has length 150 [2023-12-18 22:18:55,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:18:55,998 INFO L495 AbstractCegarLoop]: Abstraction has 28076 states and 35680 transitions. [2023-12-18 22:18:55,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-18 22:18:55,999 INFO L276 IsEmpty]: Start isEmpty. Operand 28076 states and 35680 transitions. [2023-12-18 22:18:56,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-18 22:18:56,017 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:18:56,017 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:18:56,024 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-18 22:18:56,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 22:18:56,222 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:18:56,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:18:56,224 INFO L85 PathProgramCache]: Analyzing trace with hash -35872841, now seen corresponding path program 1 times [2023-12-18 22:18:56,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:18:56,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802180232] [2023-12-18 22:18:56,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:18:56,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:18:56,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:56,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:18:56,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:56,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-18 22:18:56,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:56,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-18 22:18:56,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:56,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-18 22:18:56,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:56,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-18 22:18:56,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:56,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-18 22:18:56,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:56,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-18 22:18:56,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:56,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-18 22:18:56,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:56,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-18 22:18:56,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:56,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-18 22:18:56,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:56,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-18 22:18:56,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:56,338 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2023-12-18 22:18:56,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:18:56,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802180232] [2023-12-18 22:18:56,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802180232] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 22:18:56,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [824926837] [2023-12-18 22:18:56,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:18:56,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 22:18:56,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 22:18:56,340 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 22:18:56,343 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-18 22:18:56,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:56,433 INFO L262 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-18 22:18:56,436 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 22:18:56,503 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2023-12-18 22:18:56,503 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-18 22:18:56,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [824926837] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:18:56,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-18 22:18:56,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2023-12-18 22:18:56,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079270747] [2023-12-18 22:18:56,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:18:56,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-18 22:18:56,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:18:56,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-18 22:18:56,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-18 22:18:56,504 INFO L87 Difference]: Start difference. First operand 28076 states and 35680 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-18 22:18:57,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:18:57,235 INFO L93 Difference]: Finished difference Result 37698 states and 47779 transitions. [2023-12-18 22:18:57,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-18 22:18:57,235 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 151 [2023-12-18 22:18:57,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:18:57,274 INFO L225 Difference]: With dead ends: 37698 [2023-12-18 22:18:57,274 INFO L226 Difference]: Without dead ends: 20707 [2023-12-18 22:18:57,295 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-12-18 22:18:57,296 INFO L413 NwaCegarLoop]: 4049 mSDtfsCounter, 4122 mSDsluCounter, 8052 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4131 SdHoareTripleChecker+Valid, 12101 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-18 22:18:57,296 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4131 Valid, 12101 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-18 22:18:57,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20707 states. [2023-12-18 22:18:57,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20707 to 20647. [2023-12-18 22:18:57,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20647 states, 17810 states have (on average 1.2582257158899495) internal successors, (22409), 18137 states have internal predecessors, (22409), 1387 states have call successors, (1387), 1056 states have call predecessors, (1387), 1448 states have return successors, (2451), 1457 states have call predecessors, (2451), 1387 states have call successors, (2451) [2023-12-18 22:18:58,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20647 states to 20647 states and 26247 transitions. [2023-12-18 22:18:58,047 INFO L78 Accepts]: Start accepts. Automaton has 20647 states and 26247 transitions. Word has length 151 [2023-12-18 22:18:58,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:18:58,047 INFO L495 AbstractCegarLoop]: Abstraction has 20647 states and 26247 transitions. [2023-12-18 22:18:58,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-18 22:18:58,047 INFO L276 IsEmpty]: Start isEmpty. Operand 20647 states and 26247 transitions. [2023-12-18 22:18:58,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-18 22:18:58,055 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:18:58,056 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:18:58,062 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-18 22:18:58,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 22:18:58,260 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:18:58,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:18:58,261 INFO L85 PathProgramCache]: Analyzing trace with hash 435483509, now seen corresponding path program 1 times [2023-12-18 22:18:58,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:18:58,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223694715] [2023-12-18 22:18:58,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:18:58,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:18:58,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:58,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:18:58,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:58,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-18 22:18:58,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:58,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-18 22:18:58,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:58,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-18 22:18:58,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:58,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-18 22:18:58,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:58,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-18 22:18:58,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:58,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-18 22:18:58,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:58,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-18 22:18:58,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:58,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-18 22:18:58,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:58,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-18 22:18:58,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:58,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-18 22:18:58,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:58,338 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2023-12-18 22:18:58,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:18:58,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223694715] [2023-12-18 22:18:58,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223694715] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 22:18:58,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [581903595] [2023-12-18 22:18:58,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:18:58,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 22:18:58,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 22:18:58,339 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 22:18:58,368 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-18 22:18:58,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:58,437 INFO L262 TraceCheckSpWp]: Trace formula consists of 528 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-18 22:18:58,439 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 22:18:58,446 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-12-18 22:18:58,446 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-18 22:18:58,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [581903595] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:18:58,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-18 22:18:58,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2023-12-18 22:18:58,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877017178] [2023-12-18 22:18:58,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:18:58,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-18 22:18:58,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:18:58,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-18 22:18:58,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-18 22:18:58,448 INFO L87 Difference]: Start difference. First operand 20647 states and 26247 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-18 22:18:58,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:18:58,981 INFO L93 Difference]: Finished difference Result 33074 states and 41670 transitions. [2023-12-18 22:18:58,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-18 22:18:58,982 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 151 [2023-12-18 22:18:58,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:18:59,008 INFO L225 Difference]: With dead ends: 33074 [2023-12-18 22:18:59,008 INFO L226 Difference]: Without dead ends: 14557 [2023-12-18 22:18:59,033 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-18 22:18:59,034 INFO L413 NwaCegarLoop]: 4102 mSDtfsCounter, 20 mSDsluCounter, 8196 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 12298 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 22:18:59,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 12298 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 22:18:59,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14557 states. [2023-12-18 22:18:59,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14557 to 14285. [2023-12-18 22:18:59,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14285 states, 12339 states have (on average 1.275386984358538) internal successors, (15737), 12549 states have internal predecessors, (15737), 956 states have call successors, (956), 736 states have call predecessors, (956), 988 states have return successors, (1535), 1001 states have call predecessors, (1535), 956 states have call successors, (1535) [2023-12-18 22:18:59,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14285 states to 14285 states and 18228 transitions. [2023-12-18 22:18:59,550 INFO L78 Accepts]: Start accepts. Automaton has 14285 states and 18228 transitions. Word has length 151 [2023-12-18 22:18:59,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:18:59,550 INFO L495 AbstractCegarLoop]: Abstraction has 14285 states and 18228 transitions. [2023-12-18 22:18:59,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-18 22:18:59,550 INFO L276 IsEmpty]: Start isEmpty. Operand 14285 states and 18228 transitions. [2023-12-18 22:18:59,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-18 22:18:59,556 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:18:59,556 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:18:59,565 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-18 22:18:59,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-12-18 22:18:59,761 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:18:59,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:18:59,762 INFO L85 PathProgramCache]: Analyzing trace with hash -1100071361, now seen corresponding path program 1 times [2023-12-18 22:18:59,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:18:59,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520415218] [2023-12-18 22:18:59,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:18:59,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:18:59,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:59,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:18:59,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:59,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-18 22:18:59,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:59,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-18 22:18:59,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:59,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-18 22:18:59,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:59,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-18 22:18:59,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:59,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-18 22:18:59,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:59,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-18 22:18:59,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:59,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-18 22:18:59,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:59,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-12-18 22:18:59,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:59,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-18 22:18:59,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:59,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-18 22:18:59,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:59,870 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2023-12-18 22:18:59,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:18:59,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520415218] [2023-12-18 22:18:59,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520415218] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 22:18:59,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [783123410] [2023-12-18 22:18:59,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:18:59,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 22:18:59,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 22:18:59,881 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 22:18:59,882 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-18 22:18:59,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:59,972 INFO L262 TraceCheckSpWp]: Trace formula consists of 526 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-18 22:18:59,974 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 22:18:59,980 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2023-12-18 22:18:59,980 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-18 22:18:59,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [783123410] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:18:59,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-18 22:18:59,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2023-12-18 22:18:59,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850933244] [2023-12-18 22:18:59,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:18:59,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-18 22:18:59,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:18:59,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-18 22:18:59,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-18 22:18:59,981 INFO L87 Difference]: Start difference. First operand 14285 states and 18228 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-18 22:19:00,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:19:00,332 INFO L93 Difference]: Finished difference Result 24323 states and 30365 transitions. [2023-12-18 22:19:00,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-18 22:19:00,332 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 151 [2023-12-18 22:19:00,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:19:00,352 INFO L225 Difference]: With dead ends: 24323 [2023-12-18 22:19:00,352 INFO L226 Difference]: Without dead ends: 12168 [2023-12-18 22:19:00,368 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-18 22:19:00,369 INFO L413 NwaCegarLoop]: 4101 mSDtfsCounter, 11 mSDsluCounter, 8196 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 12297 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 22:19:00,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 12297 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 22:19:00,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12168 states. [2023-12-18 22:19:00,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12168 to 12144. [2023-12-18 22:19:00,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12144 states, 10507 states have (on average 1.2785761873037023) internal successors, (13434), 10667 states have internal predecessors, (13434), 813 states have call successors, (813), 620 states have call predecessors, (813), 822 states have return successors, (1201), 858 states have call predecessors, (1201), 813 states have call successors, (1201) [2023-12-18 22:19:00,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12144 states to 12144 states and 15448 transitions. [2023-12-18 22:19:00,725 INFO L78 Accepts]: Start accepts. Automaton has 12144 states and 15448 transitions. Word has length 151 [2023-12-18 22:19:00,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:19:00,725 INFO L495 AbstractCegarLoop]: Abstraction has 12144 states and 15448 transitions. [2023-12-18 22:19:00,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-18 22:19:00,726 INFO L276 IsEmpty]: Start isEmpty. Operand 12144 states and 15448 transitions. [2023-12-18 22:19:00,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-18 22:19:00,730 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:19:00,730 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:19:00,737 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-12-18 22:19:00,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 22:19:00,934 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:19:00,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:19:00,934 INFO L85 PathProgramCache]: Analyzing trace with hash 197297793, now seen corresponding path program 1 times [2023-12-18 22:19:00,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:19:00,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076949508] [2023-12-18 22:19:00,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:19:00,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:19:00,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:19:00,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:19:00,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:19:01,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-18 22:19:01,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:19:01,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-18 22:19:01,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:19:01,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-18 22:19:01,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:19:01,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-18 22:19:01,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:19:01,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-18 22:19:01,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:19:01,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-18 22:19:01,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:19:01,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-18 22:19:01,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:19:01,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-12-18 22:19:01,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:19:01,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-18 22:19:01,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:19:01,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-18 22:19:01,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:19:01,067 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2023-12-18 22:19:01,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:19:01,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076949508] [2023-12-18 22:19:01,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076949508] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 22:19:01,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1682461944] [2023-12-18 22:19:01,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:19:01,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 22:19:01,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 22:19:01,086 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 22:19:01,101 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-18 22:19:01,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:19:01,195 INFO L262 TraceCheckSpWp]: Trace formula consists of 523 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-18 22:19:01,197 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 22:19:01,203 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2023-12-18 22:19:01,203 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-18 22:19:01,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1682461944] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:19:01,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-18 22:19:01,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2023-12-18 22:19:01,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919648320] [2023-12-18 22:19:01,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:19:01,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-18 22:19:01,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:19:01,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-18 22:19:01,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-18 22:19:01,205 INFO L87 Difference]: Start difference. First operand 12144 states and 15448 transitions. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-18 22:19:01,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:19:01,490 INFO L93 Difference]: Finished difference Result 17051 states and 21177 transitions. [2023-12-18 22:19:01,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-18 22:19:01,490 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 151 [2023-12-18 22:19:01,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:19:01,498 INFO L225 Difference]: With dead ends: 17051 [2023-12-18 22:19:01,498 INFO L226 Difference]: Without dead ends: 5165 [2023-12-18 22:19:01,509 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-18 22:19:01,510 INFO L413 NwaCegarLoop]: 4101 mSDtfsCounter, 2 mSDsluCounter, 8197 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 12298 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 22:19:01,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 12298 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 22:19:01,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5165 states. [2023-12-18 22:19:01,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5165 to 5165. [2023-12-18 22:19:01,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5165 states, 4671 states have (on average 1.4500107043459645) internal successors, (6773), 4693 states have internal predecessors, (6773), 276 states have call successors, (276), 200 states have call predecessors, (276), 216 states have return successors, (301), 273 states have call predecessors, (301), 276 states have call successors, (301) [2023-12-18 22:19:01,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5165 states to 5165 states and 7350 transitions. [2023-12-18 22:19:01,644 INFO L78 Accepts]: Start accepts. Automaton has 5165 states and 7350 transitions. Word has length 151 [2023-12-18 22:19:01,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:19:01,644 INFO L495 AbstractCegarLoop]: Abstraction has 5165 states and 7350 transitions. [2023-12-18 22:19:01,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-18 22:19:01,645 INFO L276 IsEmpty]: Start isEmpty. Operand 5165 states and 7350 transitions. [2023-12-18 22:19:01,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2023-12-18 22:19:01,647 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:19:01,647 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:19:01,654 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-12-18 22:19:01,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 22:19:01,852 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:19:01,852 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:19:01,853 INFO L85 PathProgramCache]: Analyzing trace with hash 944244350, now seen corresponding path program 1 times [2023-12-18 22:19:01,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:19:01,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625149332] [2023-12-18 22:19:01,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:19:01,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:19:01,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:19:01,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:19:01,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:19:01,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-18 22:19:01,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:19:01,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-18 22:19:01,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:19:01,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-18 22:19:01,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:19:01,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-18 22:19:01,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:19:01,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-18 22:19:01,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:19:01,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-12-18 22:19:01,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:19:01,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-18 22:19:01,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:19:01,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-12-18 22:19:01,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:19:01,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-18 22:19:01,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:19:01,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-18 22:19:01,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:19:01,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-18 22:19:01,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:19:01,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2023-12-18 22:19:01,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:19:01,986 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2023-12-18 22:19:01,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:19:01,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625149332] [2023-12-18 22:19:01,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625149332] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:19:01,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:19:01,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:19:01,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935379193] [2023-12-18 22:19:01,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:19:01,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:19:01,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:19:01,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:19:01,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:19:01,987 INFO L87 Difference]: Start difference. First operand 5165 states and 7350 transitions. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 5 states have internal predecessors, (104), 5 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (10), 4 states have call predecessors, (10), 5 states have call successors, (10) [2023-12-18 22:19:02,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:19:02,738 INFO L93 Difference]: Finished difference Result 5381 states and 7574 transitions. [2023-12-18 22:19:02,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-18 22:19:02,739 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 5 states have internal predecessors, (104), 5 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (10), 4 states have call predecessors, (10), 5 states have call successors, (10) Word has length 183 [2023-12-18 22:19:02,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:19:02,742 INFO L225 Difference]: With dead ends: 5381 [2023-12-18 22:19:02,742 INFO L226 Difference]: Without dead ends: 2122 [2023-12-18 22:19:02,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2023-12-18 22:19:02,745 INFO L413 NwaCegarLoop]: 4141 mSDtfsCounter, 4595 mSDsluCounter, 16264 mSDsCounter, 0 mSdLazyCounter, 900 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4628 SdHoareTripleChecker+Valid, 20405 SdHoareTripleChecker+Invalid, 969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 900 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-18 22:19:02,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4628 Valid, 20405 Invalid, 969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 900 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-18 22:19:02,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2122 states. [2023-12-18 22:19:02,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2122 to 2122. [2023-12-18 22:19:02,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2122 states, 2121 states have (on average 1.866100895803866) internal successors, (3958), 2121 states have internal predecessors, (3958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 22:19:02,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2122 states to 2122 states and 3958 transitions. [2023-12-18 22:19:02,762 INFO L78 Accepts]: Start accepts. Automaton has 2122 states and 3958 transitions. Word has length 183 [2023-12-18 22:19:02,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:19:02,762 INFO L495 AbstractCegarLoop]: Abstraction has 2122 states and 3958 transitions. [2023-12-18 22:19:02,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 5 states have internal predecessors, (104), 5 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (10), 4 states have call predecessors, (10), 5 states have call successors, (10) [2023-12-18 22:19:02,762 INFO L276 IsEmpty]: Start isEmpty. Operand 2122 states and 3958 transitions. [2023-12-18 22:19:02,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1654 [2023-12-18 22:19:02,779 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:19:02,780 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:19:02,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-18 22:19:02,780 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:19:02,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:19:02,781 INFO L85 PathProgramCache]: Analyzing trace with hash 2109015020, now seen corresponding path program 1 times [2023-12-18 22:19:02,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:19:02,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901269620] [2023-12-18 22:19:02,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:19:02,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:19:03,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:19:04,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:19:04,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:19:04,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901269620] [2023-12-18 22:19:04,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901269620] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:19:04,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:19:04,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-18 22:19:04,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318129963] [2023-12-18 22:19:04,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:19:04,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 22:19:04,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:19:04,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 22:19:04,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 22:19:04,062 INFO L87 Difference]: Start difference. First operand 2122 states and 3958 transitions. Second operand has 3 states, 3 states have (on average 551.0) internal successors, (1653), 2 states have internal predecessors, (1653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 22:19:09,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:19:09,321 INFO L93 Difference]: Finished difference Result 6076 states and 11441 transitions. [2023-12-18 22:19:09,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 22:19:09,322 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 551.0) internal successors, (1653), 2 states have internal predecessors, (1653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1653 [2023-12-18 22:19:09,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:19:09,330 INFO L225 Difference]: With dead ends: 6076 [2023-12-18 22:19:09,330 INFO L226 Difference]: Without dead ends: 3956 [2023-12-18 22:19:09,333 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 22:19:09,334 INFO L413 NwaCegarLoop]: 739 mSDtfsCounter, 517 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 5894 mSolverCounterSat, 1830 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 517 SdHoareTripleChecker+Valid, 827 SdHoareTripleChecker+Invalid, 7724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1830 IncrementalHoareTripleChecker+Valid, 5894 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2023-12-18 22:19:09,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [517 Valid, 827 Invalid, 7724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1830 Valid, 5894 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2023-12-18 22:19:09,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3956 states. [2023-12-18 22:19:09,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3956 to 3893. [2023-12-18 22:19:09,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3893 states, 3892 states have (on average 1.8661356628982528) internal successors, (7263), 3892 states have internal predecessors, (7263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 22:19:09,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3893 states to 3893 states and 7263 transitions. [2023-12-18 22:19:09,377 INFO L78 Accepts]: Start accepts. Automaton has 3893 states and 7263 transitions. Word has length 1653 [2023-12-18 22:19:09,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:19:09,380 INFO L495 AbstractCegarLoop]: Abstraction has 3893 states and 7263 transitions. [2023-12-18 22:19:09,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 551.0) internal successors, (1653), 2 states have internal predecessors, (1653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 22:19:09,380 INFO L276 IsEmpty]: Start isEmpty. Operand 3893 states and 7263 transitions. [2023-12-18 22:19:09,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1660 [2023-12-18 22:19:09,399 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:19:09,400 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:19:09,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-12-18 22:19:09,400 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:19:09,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:19:09,401 INFO L85 PathProgramCache]: Analyzing trace with hash 813703829, now seen corresponding path program 1 times [2023-12-18 22:19:09,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:19:09,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737197837] [2023-12-18 22:19:09,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:19:09,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:19:09,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:19:10,162 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:19:10,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:19:10,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737197837] [2023-12-18 22:19:10,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737197837] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:19:10,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:19:10,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-18 22:19:10,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263957832] [2023-12-18 22:19:10,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:19:10,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 22:19:10,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:19:10,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 22:19:10,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 22:19:10,165 INFO L87 Difference]: Start difference. First operand 3893 states and 7263 transitions. Second operand has 3 states, 3 states have (on average 553.0) internal successors, (1659), 2 states have internal predecessors, (1659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 22:19:14,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:19:14,505 INFO L93 Difference]: Finished difference Result 11236 states and 21147 transitions. [2023-12-18 22:19:14,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 22:19:14,506 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 553.0) internal successors, (1659), 2 states have internal predecessors, (1659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1659 [2023-12-18 22:19:14,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:19:14,516 INFO L225 Difference]: With dead ends: 11236 [2023-12-18 22:19:14,516 INFO L226 Difference]: Without dead ends: 7345 [2023-12-18 22:19:14,521 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 22:19:14,525 INFO L413 NwaCegarLoop]: 1719 mSDtfsCounter, 1950 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 5564 mSolverCounterSat, 1409 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1950 SdHoareTripleChecker+Valid, 2028 SdHoareTripleChecker+Invalid, 6973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1409 IncrementalHoareTripleChecker+Valid, 5564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-12-18 22:19:14,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1950 Valid, 2028 Invalid, 6973 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1409 Valid, 5564 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-12-18 22:19:14,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7345 states. [2023-12-18 22:19:14,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7345 to 7338. [2023-12-18 22:19:14,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7338 states, 7337 states have (on average 1.6152378356276407) internal successors, (11851), 7337 states have internal predecessors, (11851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 22:19:14,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7338 states to 7338 states and 11851 transitions. [2023-12-18 22:19:14,587 INFO L78 Accepts]: Start accepts. Automaton has 7338 states and 11851 transitions. Word has length 1659 [2023-12-18 22:19:14,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:19:14,610 INFO L495 AbstractCegarLoop]: Abstraction has 7338 states and 11851 transitions. [2023-12-18 22:19:14,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 553.0) internal successors, (1659), 2 states have internal predecessors, (1659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 22:19:14,611 INFO L276 IsEmpty]: Start isEmpty. Operand 7338 states and 11851 transitions. [2023-12-18 22:19:14,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1661 [2023-12-18 22:19:14,634 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:19:14,635 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:19:14,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-12-18 22:19:14,635 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:19:14,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:19:14,635 INFO L85 PathProgramCache]: Analyzing trace with hash 518960088, now seen corresponding path program 1 times [2023-12-18 22:19:14,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:19:14,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929416497] [2023-12-18 22:19:14,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:19:14,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:19:14,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:19:16,779 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:19:16,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:19:16,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929416497] [2023-12-18 22:19:16,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929416497] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:19:16,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:19:16,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-18 22:19:16,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151790893] [2023-12-18 22:19:16,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:19:16,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-18 22:19:16,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:19:16,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-18 22:19:16,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-18 22:19:16,784 INFO L87 Difference]: Start difference. First operand 7338 states and 11851 transitions. Second operand has 4 states, 4 states have (on average 415.0) internal successors, (1660), 3 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 22:19:24,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:19:24,051 INFO L93 Difference]: Finished difference Result 23108 states and 38076 transitions. [2023-12-18 22:19:24,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-18 22:19:24,052 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 415.0) internal successors, (1660), 3 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1660 [2023-12-18 22:19:24,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:19:24,070 INFO L225 Difference]: With dead ends: 23108 [2023-12-18 22:19:24,070 INFO L226 Difference]: Without dead ends: 14120 [2023-12-18 22:19:24,078 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-18 22:19:24,079 INFO L413 NwaCegarLoop]: 1038 mSDtfsCounter, 2406 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 9717 mSolverCounterSat, 3760 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2406 SdHoareTripleChecker+Valid, 1456 SdHoareTripleChecker+Invalid, 13477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3760 IncrementalHoareTripleChecker+Valid, 9717 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2023-12-18 22:19:24,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2406 Valid, 1456 Invalid, 13477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3760 Valid, 9717 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2023-12-18 22:19:24,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14120 states. [2023-12-18 22:19:24,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14120 to 14120. [2023-12-18 22:19:24,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14120 states, 14119 states have (on average 1.296763226857426) internal successors, (18309), 14119 states have internal predecessors, (18309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 22:19:24,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14120 states to 14120 states and 18309 transitions. [2023-12-18 22:19:24,206 INFO L78 Accepts]: Start accepts. Automaton has 14120 states and 18309 transitions. Word has length 1660 [2023-12-18 22:19:24,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:19:24,206 INFO L495 AbstractCegarLoop]: Abstraction has 14120 states and 18309 transitions. [2023-12-18 22:19:24,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 415.0) internal successors, (1660), 3 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 22:19:24,207 INFO L276 IsEmpty]: Start isEmpty. Operand 14120 states and 18309 transitions. [2023-12-18 22:19:24,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1670 [2023-12-18 22:19:24,238 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:19:24,239 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:19:24,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-12-18 22:19:24,239 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:19:24,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:19:24,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1377988990, now seen corresponding path program 1 times [2023-12-18 22:19:24,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:19:24,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343938765] [2023-12-18 22:19:24,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:19:24,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:19:24,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:19:24,968 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-18 22:19:24,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:19:24,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343938765] [2023-12-18 22:19:24,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343938765] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:19:24,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:19:24,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-18 22:19:24,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013190409] [2023-12-18 22:19:24,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:19:24,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 22:19:24,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:19:24,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 22:19:24,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 22:19:24,971 INFO L87 Difference]: Start difference. First operand 14120 states and 18309 transitions. Second operand has 3 states, 3 states have (on average 553.0) internal successors, (1659), 2 states have internal predecessors, (1659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 22:19:28,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:19:28,747 INFO L93 Difference]: Finished difference Result 41844 states and 54241 transitions. [2023-12-18 22:19:28,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 22:19:28,747 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 553.0) internal successors, (1659), 2 states have internal predecessors, (1659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1669 [2023-12-18 22:19:28,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:19:28,784 INFO L225 Difference]: With dead ends: 41844 [2023-12-18 22:19:28,785 INFO L226 Difference]: Without dead ends: 27726 [2023-12-18 22:19:28,803 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 22:19:28,804 INFO L413 NwaCegarLoop]: 1032 mSDtfsCounter, 2404 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 4608 mSolverCounterSat, 911 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2404 SdHoareTripleChecker+Valid, 1205 SdHoareTripleChecker+Invalid, 5519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 911 IncrementalHoareTripleChecker+Valid, 4608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-12-18 22:19:28,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2404 Valid, 1205 Invalid, 5519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [911 Valid, 4608 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-12-18 22:19:28,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27726 states. [2023-12-18 22:19:29,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27726 to 27724. [2023-12-18 22:19:29,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27724 states, 27723 states have (on average 1.2163546513725065) internal successors, (33721), 27723 states have internal predecessors, (33721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 22:19:29,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27724 states to 27724 states and 33721 transitions. [2023-12-18 22:19:29,084 INFO L78 Accepts]: Start accepts. Automaton has 27724 states and 33721 transitions. Word has length 1669 [2023-12-18 22:19:29,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:19:29,084 INFO L495 AbstractCegarLoop]: Abstraction has 27724 states and 33721 transitions. [2023-12-18 22:19:29,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 553.0) internal successors, (1659), 2 states have internal predecessors, (1659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 22:19:29,085 INFO L276 IsEmpty]: Start isEmpty. Operand 27724 states and 33721 transitions. [2023-12-18 22:19:29,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1672 [2023-12-18 22:19:29,132 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:19:29,132 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:19:29,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-12-18 22:19:29,133 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:19:29,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:19:29,133 INFO L85 PathProgramCache]: Analyzing trace with hash 450004538, now seen corresponding path program 1 times [2023-12-18 22:19:29,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:19:29,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372213804] [2023-12-18 22:19:29,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:19:29,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:19:29,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:19:30,265 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:19:30,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:19:30,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372213804] [2023-12-18 22:19:30,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372213804] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:19:30,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:19:30,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-18 22:19:30,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522340712] [2023-12-18 22:19:30,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:19:30,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 22:19:30,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:19:30,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 22:19:30,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 22:19:30,269 INFO L87 Difference]: Start difference. First operand 27724 states and 33721 transitions. Second operand has 3 states, 3 states have (on average 557.0) internal successors, (1671), 3 states have internal predecessors, (1671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 22:19:33,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:19:33,909 INFO L93 Difference]: Finished difference Result 82754 states and 100651 transitions. [2023-12-18 22:19:33,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 22:19:33,909 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 557.0) internal successors, (1671), 3 states have internal predecessors, (1671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1671 [2023-12-18 22:19:33,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:19:33,991 INFO L225 Difference]: With dead ends: 82754 [2023-12-18 22:19:33,992 INFO L226 Difference]: Without dead ends: 55032 [2023-12-18 22:19:34,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 22:19:34,027 INFO L413 NwaCegarLoop]: 3185 mSDtfsCounter, 387 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 5090 mSolverCounterSat, 635 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 387 SdHoareTripleChecker+Valid, 3579 SdHoareTripleChecker+Invalid, 5725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 635 IncrementalHoareTripleChecker+Valid, 5090 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-18 22:19:34,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [387 Valid, 3579 Invalid, 5725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [635 Valid, 5090 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-18 22:19:34,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55032 states. [2023-12-18 22:19:34,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55032 to 54983. [2023-12-18 22:19:34,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54983 states, 54982 states have (on average 1.1629987996071443) internal successors, (63944), 54982 states have internal predecessors, (63944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 22:19:34,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54983 states to 54983 states and 63944 transitions. [2023-12-18 22:19:34,843 INFO L78 Accepts]: Start accepts. Automaton has 54983 states and 63944 transitions. Word has length 1671 [2023-12-18 22:19:34,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:19:34,844 INFO L495 AbstractCegarLoop]: Abstraction has 54983 states and 63944 transitions. [2023-12-18 22:19:34,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 557.0) internal successors, (1671), 3 states have internal predecessors, (1671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 22:19:34,845 INFO L276 IsEmpty]: Start isEmpty. Operand 54983 states and 63944 transitions. [2023-12-18 22:19:34,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1771 [2023-12-18 22:19:34,903 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:19:34,904 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:19:34,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-12-18 22:19:34,904 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:19:34,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:19:34,914 INFO L85 PathProgramCache]: Analyzing trace with hash -89718237, now seen corresponding path program 1 times [2023-12-18 22:19:34,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:19:34,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844692150] [2023-12-18 22:19:34,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:19:34,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:19:35,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:19:35,594 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-18 22:19:35,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:19:35,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844692150] [2023-12-18 22:19:35,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844692150] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:19:35,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:19:35,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-18 22:19:35,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229675025] [2023-12-18 22:19:35,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:19:35,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 22:19:35,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:19:35,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 22:19:35,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 22:19:35,597 INFO L87 Difference]: Start difference. First operand 54983 states and 63944 transitions. Second operand has 3 states, 3 states have (on average 586.6666666666666) internal successors, (1760), 2 states have internal predecessors, (1760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 22:19:39,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:19:40,066 INFO L93 Difference]: Finished difference Result 109874 states and 127765 transitions. [2023-12-18 22:19:40,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 22:19:40,070 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 586.6666666666666) internal successors, (1760), 2 states have internal predecessors, (1760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1770 [2023-12-18 22:19:40,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:19:40,143 INFO L225 Difference]: With dead ends: 109874 [2023-12-18 22:19:40,143 INFO L226 Difference]: Without dead ends: 54893 [2023-12-18 22:19:40,166 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 22:19:40,167 INFO L413 NwaCegarLoop]: 1075 mSDtfsCounter, 2343 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 4232 mSolverCounterSat, 850 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2343 SdHoareTripleChecker+Valid, 1207 SdHoareTripleChecker+Invalid, 5082 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 850 IncrementalHoareTripleChecker+Valid, 4232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-12-18 22:19:40,167 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2343 Valid, 1207 Invalid, 5082 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [850 Valid, 4232 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-12-18 22:19:40,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54893 states. [2023-12-18 22:19:40,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54893 to 51493. [2023-12-18 22:19:40,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51493 states, 51492 states have (on average 1.1172026722597685) internal successors, (57527), 51492 states have internal predecessors, (57527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 22:19:40,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51493 states to 51493 states and 57527 transitions. [2023-12-18 22:19:40,829 INFO L78 Accepts]: Start accepts. Automaton has 51493 states and 57527 transitions. Word has length 1770 [2023-12-18 22:19:40,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:19:40,829 INFO L495 AbstractCegarLoop]: Abstraction has 51493 states and 57527 transitions. [2023-12-18 22:19:40,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 586.6666666666666) internal successors, (1760), 2 states have internal predecessors, (1760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 22:19:40,830 INFO L276 IsEmpty]: Start isEmpty. Operand 51493 states and 57527 transitions. [2023-12-18 22:19:40,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1787 [2023-12-18 22:19:40,890 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:19:40,891 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:19:40,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-12-18 22:19:40,891 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:19:40,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:19:40,891 INFO L85 PathProgramCache]: Analyzing trace with hash -1805715652, now seen corresponding path program 1 times [2023-12-18 22:19:40,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:19:40,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203469695] [2023-12-18 22:19:40,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:19:40,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:19:41,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:19:41,840 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 174 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-12-18 22:19:41,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:19:41,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203469695] [2023-12-18 22:19:41,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203469695] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:19:41,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:19:41,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-18 22:19:41,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038427803] [2023-12-18 22:19:41,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:19:41,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 22:19:41,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:19:41,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 22:19:41,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 22:19:41,843 INFO L87 Difference]: Start difference. First operand 51493 states and 57527 transitions. Second operand has 3 states, 3 states have (on average 581.6666666666666) internal successors, (1745), 3 states have internal predecessors, (1745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 22:19:45,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:19:45,865 INFO L93 Difference]: Finished difference Result 128470 states and 144369 transitions. [2023-12-18 22:19:45,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 22:19:45,866 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 581.6666666666666) internal successors, (1745), 3 states have internal predecessors, (1745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1786 [2023-12-18 22:19:45,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:19:45,956 INFO L225 Difference]: With dead ends: 128470 [2023-12-18 22:19:45,956 INFO L226 Difference]: Without dead ends: 76979 [2023-12-18 22:19:45,980 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 22:19:45,980 INFO L413 NwaCegarLoop]: 2961 mSDtfsCounter, 1953 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 4472 mSolverCounterSat, 1125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1953 SdHoareTripleChecker+Valid, 3183 SdHoareTripleChecker+Invalid, 5597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1125 IncrementalHoareTripleChecker+Valid, 4472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-12-18 22:19:45,980 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1953 Valid, 3183 Invalid, 5597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1125 Valid, 4472 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-12-18 22:19:46,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76979 states. [2023-12-18 22:19:46,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76979 to 75273. [2023-12-18 22:19:46,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75273 states, 75272 states have (on average 1.0965033478584334) internal successors, (82536), 75272 states have internal predecessors, (82536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 22:19:46,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75273 states to 75273 states and 82536 transitions. [2023-12-18 22:19:46,810 INFO L78 Accepts]: Start accepts. Automaton has 75273 states and 82536 transitions. Word has length 1786 [2023-12-18 22:19:46,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:19:46,810 INFO L495 AbstractCegarLoop]: Abstraction has 75273 states and 82536 transitions. [2023-12-18 22:19:46,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 581.6666666666666) internal successors, (1745), 3 states have internal predecessors, (1745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 22:19:46,811 INFO L276 IsEmpty]: Start isEmpty. Operand 75273 states and 82536 transitions. [2023-12-18 22:19:46,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1805 [2023-12-18 22:19:46,899 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:19:46,900 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:19:46,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-12-18 22:19:46,900 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:19:46,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:19:46,901 INFO L85 PathProgramCache]: Analyzing trace with hash 149816001, now seen corresponding path program 1 times [2023-12-18 22:19:46,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:19:46,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425523053] [2023-12-18 22:19:46,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:19:46,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:19:47,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:19:48,004 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2023-12-18 22:19:48,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:19:48,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425523053] [2023-12-18 22:19:48,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425523053] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:19:48,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:19:48,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-18 22:19:48,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413069179] [2023-12-18 22:19:48,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:19:48,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 22:19:48,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:19:48,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 22:19:48,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 22:19:48,007 INFO L87 Difference]: Start difference. First operand 75273 states and 82536 transitions. Second operand has 3 states, 3 states have (on average 564.6666666666666) internal successors, (1694), 2 states have internal predecessors, (1694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 22:19:52,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:19:52,049 INFO L93 Difference]: Finished difference Result 211694 states and 231696 transitions. [2023-12-18 22:19:52,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 22:19:52,049 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 564.6666666666666) internal successors, (1694), 2 states have internal predecessors, (1694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1804 [2023-12-18 22:19:52,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:19:52,260 INFO L225 Difference]: With dead ends: 211694 [2023-12-18 22:19:52,260 INFO L226 Difference]: Without dead ends: 136423 [2023-12-18 22:19:52,288 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 22:19:52,288 INFO L413 NwaCegarLoop]: 959 mSDtfsCounter, 2092 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 4507 mSolverCounterSat, 1361 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2092 SdHoareTripleChecker+Valid, 1086 SdHoareTripleChecker+Invalid, 5868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1361 IncrementalHoareTripleChecker+Valid, 4507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-18 22:19:52,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2092 Valid, 1086 Invalid, 5868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1361 Valid, 4507 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-18 22:19:52,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136423 states. [2023-12-18 22:19:53,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136423 to 133008. [2023-12-18 22:19:53,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133008 states, 133007 states have (on average 1.0768982083649732) internal successors, (143235), 133007 states have internal predecessors, (143235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 22:19:53,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133008 states to 133008 states and 143235 transitions. [2023-12-18 22:19:53,968 INFO L78 Accepts]: Start accepts. Automaton has 133008 states and 143235 transitions. Word has length 1804 [2023-12-18 22:19:53,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:19:53,969 INFO L495 AbstractCegarLoop]: Abstraction has 133008 states and 143235 transitions. [2023-12-18 22:19:53,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 564.6666666666666) internal successors, (1694), 2 states have internal predecessors, (1694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 22:19:53,969 INFO L276 IsEmpty]: Start isEmpty. Operand 133008 states and 143235 transitions. [2023-12-18 22:19:54,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2236 [2023-12-18 22:19:54,132 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:19:54,133 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:19:54,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-12-18 22:19:54,133 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:19:54,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:19:54,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1927559847, now seen corresponding path program 1 times [2023-12-18 22:19:54,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:19:54,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400311029] [2023-12-18 22:19:54,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:19:54,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:19:54,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:19:55,639 INFO L134 CoverageAnalysis]: Checked inductivity of 759 backedges. 724 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-12-18 22:19:55,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:19:55,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400311029] [2023-12-18 22:19:55,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400311029] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:19:55,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:19:55,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-18 22:19:55,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447245492] [2023-12-18 22:19:55,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:19:55,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 22:19:55,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:19:55,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 22:19:55,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 22:19:55,643 INFO L87 Difference]: Start difference. First operand 133008 states and 143235 transitions. Second operand has 3 states, 3 states have (on average 733.6666666666666) internal successors, (2201), 3 states have internal predecessors, (2201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 22:20:00,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:20:00,803 INFO L93 Difference]: Finished difference Result 325536 states and 350166 transitions. [2023-12-18 22:20:00,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 22:20:00,803 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 733.6666666666666) internal successors, (2201), 3 states have internal predecessors, (2201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2235 [2023-12-18 22:20:00,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:20:01,272 INFO L225 Difference]: With dead ends: 325536 [2023-12-18 22:20:01,272 INFO L226 Difference]: Without dead ends: 192530 [2023-12-18 22:20:01,314 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 22:20:01,315 INFO L413 NwaCegarLoop]: 2785 mSDtfsCounter, 1621 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 4823 mSolverCounterSat, 1149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1621 SdHoareTripleChecker+Valid, 2910 SdHoareTripleChecker+Invalid, 5972 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1149 IncrementalHoareTripleChecker+Valid, 4823 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-12-18 22:20:01,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1621 Valid, 2910 Invalid, 5972 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1149 Valid, 4823 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2023-12-18 22:20:01,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192530 states. [2023-12-18 22:20:03,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192530 to 183949. [2023-12-18 22:20:03,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183949 states, 183948 states have (on average 1.0740100463174376) internal successors, (197562), 183948 states have internal predecessors, (197562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 22:20:03,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183949 states to 183949 states and 197562 transitions. [2023-12-18 22:20:03,547 INFO L78 Accepts]: Start accepts. Automaton has 183949 states and 197562 transitions. Word has length 2235 [2023-12-18 22:20:03,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:20:03,547 INFO L495 AbstractCegarLoop]: Abstraction has 183949 states and 197562 transitions. [2023-12-18 22:20:03,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 733.6666666666666) internal successors, (2201), 3 states have internal predecessors, (2201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 22:20:03,548 INFO L276 IsEmpty]: Start isEmpty. Operand 183949 states and 197562 transitions. [2023-12-18 22:20:04,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2420 [2023-12-18 22:20:04,064 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:20:04,065 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:20:04,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-12-18 22:20:04,065 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:20:04,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:20:04,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1909516937, now seen corresponding path program 1 times [2023-12-18 22:20:04,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:20:04,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707314429] [2023-12-18 22:20:04,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:20:04,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:20:04,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:20:06,270 INFO L134 CoverageAnalysis]: Checked inductivity of 1271 backedges. 800 proven. 0 refuted. 0 times theorem prover too weak. 471 trivial. 0 not checked. [2023-12-18 22:20:06,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:20:06,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707314429] [2023-12-18 22:20:06,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707314429] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:20:06,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:20:06,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-18 22:20:06,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782917437] [2023-12-18 22:20:06,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:20:06,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 22:20:06,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:20:06,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 22:20:06,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 22:20:06,274 INFO L87 Difference]: Start difference. First operand 183949 states and 197562 transitions. Second operand has 3 states, 3 states have (on average 650.0) internal successors, (1950), 3 states have internal predecessors, (1950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 22:20:10,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:20:10,584 INFO L93 Difference]: Finished difference Result 369601 states and 396786 transitions. [2023-12-18 22:20:10,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 22:20:10,584 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 650.0) internal successors, (1950), 3 states have internal predecessors, (1950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2419 [2023-12-18 22:20:10,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:20:10,884 INFO L225 Difference]: With dead ends: 369601 [2023-12-18 22:20:10,884 INFO L226 Difference]: Without dead ends: 185654 [2023-12-18 22:20:10,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 22:20:10,975 INFO L413 NwaCegarLoop]: 2605 mSDtfsCounter, 2103 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 4410 mSolverCounterSat, 890 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2103 SdHoareTripleChecker+Valid, 2705 SdHoareTripleChecker+Invalid, 5300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 890 IncrementalHoareTripleChecker+Valid, 4410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-18 22:20:10,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2103 Valid, 2705 Invalid, 5300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [890 Valid, 4410 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-18 22:20:11,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185654 states. [2023-12-18 22:20:12,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185654 to 180552. [2023-12-18 22:20:13,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180552 states, 180551 states have (on average 1.0598556640506007) internal successors, (191358), 180551 states have internal predecessors, (191358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 22:20:13,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180552 states to 180552 states and 191358 transitions. [2023-12-18 22:20:13,576 INFO L78 Accepts]: Start accepts. Automaton has 180552 states and 191358 transitions. Word has length 2419 [2023-12-18 22:20:13,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:20:13,576 INFO L495 AbstractCegarLoop]: Abstraction has 180552 states and 191358 transitions. [2023-12-18 22:20:13,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 650.0) internal successors, (1950), 3 states have internal predecessors, (1950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 22:20:13,577 INFO L276 IsEmpty]: Start isEmpty. Operand 180552 states and 191358 transitions. [2023-12-18 22:20:13,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2428 [2023-12-18 22:20:13,781 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:20:13,781 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:20:13,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-12-18 22:20:13,782 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:20:13,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:20:13,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1923318831, now seen corresponding path program 1 times [2023-12-18 22:20:13,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:20:13,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255916781] [2023-12-18 22:20:13,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:20:13,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:20:14,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:20:15,473 INFO L134 CoverageAnalysis]: Checked inductivity of 1277 backedges. 473 proven. 0 refuted. 0 times theorem prover too weak. 804 trivial. 0 not checked. [2023-12-18 22:20:15,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:20:15,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255916781] [2023-12-18 22:20:15,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255916781] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:20:15,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:20:15,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-18 22:20:15,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331372236] [2023-12-18 22:20:15,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:20:15,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 22:20:15,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:20:15,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 22:20:15,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 22:20:15,477 INFO L87 Difference]: Start difference. First operand 180552 states and 191358 transitions. Second operand has 3 states, 3 states have (on average 603.0) internal successors, (1809), 3 states have internal predecessors, (1809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 22:20:21,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:20:21,113 INFO L93 Difference]: Finished difference Result 366258 states and 387960 transitions. [2023-12-18 22:20:21,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 22:20:21,114 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 603.0) internal successors, (1809), 3 states have internal predecessors, (1809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2427 [2023-12-18 22:20:21,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted.