/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.11.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 01:07:22,079 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 01:07:22,164 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-16 01:07:22,169 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 01:07:22,170 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 01:07:22,199 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 01:07:22,200 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 01:07:22,200 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 01:07:22,201 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 01:07:22,204 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 01:07:22,204 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 01:07:22,205 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 01:07:22,205 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 01:07:22,206 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 01:07:22,206 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 01:07:22,207 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 01:07:22,207 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 01:07:22,207 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 01:07:22,207 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 01:07:22,207 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 01:07:22,209 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 01:07:22,209 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 01:07:22,209 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 01:07:22,209 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 01:07:22,210 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 01:07:22,210 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 01:07:22,210 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 01:07:22,210 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 01:07:22,211 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 01:07:22,211 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 01:07:22,212 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 01:07:22,212 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 01:07:22,212 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 01:07:22,212 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 01:07:22,213 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 01:07:22,213 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 01:07:22,213 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 01:07:22,213 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 01:07:22,213 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 01:07:22,213 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 01:07:22,214 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 01:07:22,214 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 01:07:22,214 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 01:07:22,214 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-16 01:07:22,444 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 01:07:22,469 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 01:07:22,471 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 01:07:22,472 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 01:07:22,472 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 01:07:22,473 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.11.cil-2.c [2023-12-16 01:07:23,649 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 01:07:23,879 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 01:07:23,879 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.11.cil-2.c [2023-12-16 01:07:23,894 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a3b328ce/3a98b4b749ab49239b2d1e67422bf38f/FLAGc251e17b5 [2023-12-16 01:07:23,906 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a3b328ce/3a98b4b749ab49239b2d1e67422bf38f [2023-12-16 01:07:23,908 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 01:07:23,909 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 01:07:23,910 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 01:07:23,910 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 01:07:23,916 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 01:07:23,916 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 01:07:23" (1/1) ... [2023-12-16 01:07:23,917 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@338fd715 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:07:23, skipping insertion in model container [2023-12-16 01:07:23,917 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 01:07:23" (1/1) ... [2023-12-16 01:07:23,980 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 01:07:24,112 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/pc_sfifo_1.cil-2+token_ring.11.cil-2.c[913,926] [2023-12-16 01:07:24,155 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/pc_sfifo_1.cil-2+token_ring.11.cil-2.c[5977,5990] [2023-12-16 01:07:24,247 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 01:07:24,262 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 01:07:24,272 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/pc_sfifo_1.cil-2+token_ring.11.cil-2.c[913,926] [2023-12-16 01:07:24,284 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/pc_sfifo_1.cil-2+token_ring.11.cil-2.c[5977,5990] [2023-12-16 01:07:24,354 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 01:07:24,383 INFO L206 MainTranslator]: Completed translation [2023-12-16 01:07:24,383 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:07:24 WrapperNode [2023-12-16 01:07:24,383 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 01:07:24,384 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 01:07:24,384 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 01:07:24,384 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 01:07:24,390 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:07:24" (1/1) ... [2023-12-16 01:07:24,402 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:07:24" (1/1) ... [2023-12-16 01:07:24,452 INFO L138 Inliner]: procedures = 70, calls = 81, calls flagged for inlining = 45, calls inlined = 45, statements flattened = 1023 [2023-12-16 01:07:24,452 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 01:07:24,453 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 01:07:24,453 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 01:07:24,453 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 01:07:24,463 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:07:24" (1/1) ... [2023-12-16 01:07:24,463 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:07:24" (1/1) ... [2023-12-16 01:07:24,467 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:07:24" (1/1) ... [2023-12-16 01:07:24,491 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-16 01:07:24,492 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:07:24" (1/1) ... [2023-12-16 01:07:24,492 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:07:24" (1/1) ... [2023-12-16 01:07:24,515 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:07:24" (1/1) ... [2023-12-16 01:07:24,526 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:07:24" (1/1) ... [2023-12-16 01:07:24,529 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:07:24" (1/1) ... [2023-12-16 01:07:24,533 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:07:24" (1/1) ... [2023-12-16 01:07:24,538 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 01:07:24,548 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 01:07:24,548 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 01:07:24,548 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 01:07:24,549 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:07:24" (1/1) ... [2023-12-16 01:07:24,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 01:07:24,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 01:07:24,605 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-16 01:07:24,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-16 01:07:24,637 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 01:07:24,640 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-16 01:07:24,640 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-16 01:07:24,642 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2023-12-16 01:07:24,642 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2023-12-16 01:07:24,642 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2023-12-16 01:07:24,643 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2023-12-16 01:07:24,643 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2023-12-16 01:07:24,643 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2023-12-16 01:07:24,643 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2023-12-16 01:07:24,643 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2023-12-16 01:07:24,643 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2023-12-16 01:07:24,643 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2023-12-16 01:07:24,643 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2023-12-16 01:07:24,644 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2023-12-16 01:07:24,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 01:07:24,644 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2023-12-16 01:07:24,644 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2023-12-16 01:07:24,644 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 01:07:24,664 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 01:07:24,664 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2023-12-16 01:07:24,664 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2023-12-16 01:07:24,832 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 01:07:24,834 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 01:07:25,623 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 01:07:25,676 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 01:07:25,677 INFO L309 CfgBuilder]: Removed 18 assume(true) statements. [2023-12-16 01:07:25,677 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 01:07:25 BoogieIcfgContainer [2023-12-16 01:07:25,677 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 01:07:25,679 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 01:07:25,679 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 01:07:25,682 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 01:07:25,682 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 01:07:23" (1/3) ... [2023-12-16 01:07:25,683 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@218b702f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 01:07:25, skipping insertion in model container [2023-12-16 01:07:25,683 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:07:24" (2/3) ... [2023-12-16 01:07:25,683 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@218b702f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 01:07:25, skipping insertion in model container [2023-12-16 01:07:25,683 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 01:07:25" (3/3) ... [2023-12-16 01:07:25,684 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-2+token_ring.11.cil-2.c [2023-12-16 01:07:25,698 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 01:07:25,698 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-16 01:07:25,745 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 01:07:25,753 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;@78ee5756, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 01:07:25,754 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-16 01:07:25,767 INFO L276 IsEmpty]: Start isEmpty. Operand has 388 states, 345 states have (on average 1.7217391304347827) internal successors, (594), 350 states have internal predecessors, (594), 31 states have call successors, (31), 9 states have call predecessors, (31), 9 states have return successors, (31), 30 states have call predecessors, (31), 31 states have call successors, (31) [2023-12-16 01:07:25,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-16 01:07:25,778 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:07:25,779 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] [2023-12-16 01:07:25,779 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:07:25,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:07:25,790 INFO L85 PathProgramCache]: Analyzing trace with hash 2103410286, now seen corresponding path program 1 times [2023-12-16 01:07:25,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:07:25,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857110575] [2023-12-16 01:07:25,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:07:25,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:07:25,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:07:26,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-16 01:07:26,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:07:26,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 01:07:26,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:07:26,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:07:26,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:07:26,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857110575] [2023-12-16 01:07:26,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857110575] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:07:26,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:07:26,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 01:07:26,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778301255] [2023-12-16 01:07:26,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:07:26,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 01:07:26,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:07:26,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 01:07:26,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 01:07:26,136 INFO L87 Difference]: Start difference. First operand has 388 states, 345 states have (on average 1.7217391304347827) internal successors, (594), 350 states have internal predecessors, (594), 31 states have call successors, (31), 9 states have call predecessors, (31), 9 states have return successors, (31), 30 states have call predecessors, (31), 31 states have call successors, (31) Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-16 01:07:26,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:07:26,821 INFO L93 Difference]: Finished difference Result 818 states and 1378 transitions. [2023-12-16 01:07:26,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 01:07:26,823 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 37 [2023-12-16 01:07:26,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:07:26,836 INFO L225 Difference]: With dead ends: 818 [2023-12-16 01:07:26,836 INFO L226 Difference]: Without dead ends: 446 [2023-12-16 01:07:26,841 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 01:07:26,844 INFO L413 NwaCegarLoop]: 341 mSDtfsCounter, 829 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 420 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 854 SdHoareTripleChecker+Valid, 664 SdHoareTripleChecker+Invalid, 467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 01:07:26,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [854 Valid, 664 Invalid, 467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 420 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 01:07:26,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2023-12-16 01:07:26,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 440. [2023-12-16 01:07:26,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 392 states have (on average 1.5841836734693877) internal successors, (621), 396 states have internal predecessors, (621), 35 states have call successors, (35), 11 states have call predecessors, (35), 11 states have return successors, (39), 33 states have call predecessors, (39), 33 states have call successors, (39) [2023-12-16 01:07:26,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 695 transitions. [2023-12-16 01:07:26,913 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 695 transitions. Word has length 37 [2023-12-16 01:07:26,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:07:26,913 INFO L495 AbstractCegarLoop]: Abstraction has 440 states and 695 transitions. [2023-12-16 01:07:26,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-16 01:07:26,914 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 695 transitions. [2023-12-16 01:07:26,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-16 01:07:26,916 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:07:26,916 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] [2023-12-16 01:07:26,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-16 01:07:26,917 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:07:26,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:07:26,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1043030482, now seen corresponding path program 1 times [2023-12-16 01:07:26,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:07:26,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692592687] [2023-12-16 01:07:26,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:07:26,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:07:26,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:07:26,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-16 01:07:26,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:07:26,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-16 01:07:26,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:07:26,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:07:26,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:07:26,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692592687] [2023-12-16 01:07:26,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692592687] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:07:26,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:07:26,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 01:07:26,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215787598] [2023-12-16 01:07:26,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:07:26,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 01:07:26,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:07:26,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 01:07:26,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 01:07:26,994 INFO L87 Difference]: Start difference. First operand 440 states and 695 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-16 01:07:27,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:07:27,476 INFO L93 Difference]: Finished difference Result 674 states and 1039 transitions. [2023-12-16 01:07:27,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 01:07:27,477 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 38 [2023-12-16 01:07:27,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:07:27,481 INFO L225 Difference]: With dead ends: 674 [2023-12-16 01:07:27,481 INFO L226 Difference]: Without dead ends: 563 [2023-12-16 01:07:27,482 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 01:07:27,483 INFO L413 NwaCegarLoop]: 341 mSDtfsCounter, 842 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 382 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 867 SdHoareTripleChecker+Valid, 663 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 01:07:27,484 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [867 Valid, 663 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 382 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 01:07:27,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2023-12-16 01:07:27,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 540. [2023-12-16 01:07:27,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 540 states, 479 states have (on average 1.5427974947807934) internal successors, (739), 484 states have internal predecessors, (739), 43 states have call successors, (43), 15 states have call predecessors, (43), 16 states have return successors, (53), 41 states have call predecessors, (53), 41 states have call successors, (53) [2023-12-16 01:07:27,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 835 transitions. [2023-12-16 01:07:27,520 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 835 transitions. Word has length 38 [2023-12-16 01:07:27,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:07:27,521 INFO L495 AbstractCegarLoop]: Abstraction has 540 states and 835 transitions. [2023-12-16 01:07:27,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-16 01:07:27,521 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 835 transitions. [2023-12-16 01:07:27,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-12-16 01:07:27,523 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:07:27,523 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] [2023-12-16 01:07:27,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-16 01:07:27,524 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:07:27,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:07:27,524 INFO L85 PathProgramCache]: Analyzing trace with hash 146035582, now seen corresponding path program 1 times [2023-12-16 01:07:27,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:07:27,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366269313] [2023-12-16 01:07:27,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:07:27,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:07:27,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:07:27,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-16 01:07:27,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:07:27,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-16 01:07:27,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:07:27,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:07:27,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:07:27,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366269313] [2023-12-16 01:07:27,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366269313] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:07:27,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:07:27,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 01:07:27,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171967648] [2023-12-16 01:07:27,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:07:27,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 01:07:27,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:07:27,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 01:07:27,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 01:07:27,614 INFO L87 Difference]: Start difference. First operand 540 states and 835 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-16 01:07:28,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:07:28,174 INFO L93 Difference]: Finished difference Result 960 states and 1416 transitions. [2023-12-16 01:07:28,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 01:07:28,175 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 39 [2023-12-16 01:07:28,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:07:28,179 INFO L225 Difference]: With dead ends: 960 [2023-12-16 01:07:28,179 INFO L226 Difference]: Without dead ends: 749 [2023-12-16 01:07:28,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 01:07:28,182 INFO L413 NwaCegarLoop]: 373 mSDtfsCounter, 327 mSDsluCounter, 563 mSDsCounter, 0 mSdLazyCounter, 675 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 936 SdHoareTripleChecker+Invalid, 711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 01:07:28,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [329 Valid, 936 Invalid, 711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 675 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 01:07:28,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2023-12-16 01:07:28,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 645. [2023-12-16 01:07:28,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 645 states, 572 states have (on average 1.5174825174825175) internal successors, (868), 579 states have internal predecessors, (868), 49 states have call successors, (49), 21 states have call predecessors, (49), 22 states have return successors, (59), 45 states have call predecessors, (59), 47 states have call successors, (59) [2023-12-16 01:07:28,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 976 transitions. [2023-12-16 01:07:28,218 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 976 transitions. Word has length 39 [2023-12-16 01:07:28,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:07:28,218 INFO L495 AbstractCegarLoop]: Abstraction has 645 states and 976 transitions. [2023-12-16 01:07:28,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-16 01:07:28,218 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 976 transitions. [2023-12-16 01:07:28,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-16 01:07:28,220 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:07:28,221 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-16 01:07:28,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-16 01:07:28,221 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:07:28,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:07:28,221 INFO L85 PathProgramCache]: Analyzing trace with hash -701033479, now seen corresponding path program 1 times [2023-12-16 01:07:28,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:07:28,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764474222] [2023-12-16 01:07:28,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:07:28,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:07:28,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:07:28,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-16 01:07:28,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:07:28,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-16 01:07:28,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:07:28,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-16 01:07:28,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:07:28,300 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-16 01:07:28,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:07:28,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764474222] [2023-12-16 01:07:28,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764474222] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:07:28,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:07:28,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 01:07:28,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348919028] [2023-12-16 01:07:28,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:07:28,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 01:07:28,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:07:28,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 01:07:28,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 01:07:28,302 INFO L87 Difference]: Start difference. First operand 645 states and 976 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-16 01:07:28,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:07:28,822 INFO L93 Difference]: Finished difference Result 1161 states and 1693 transitions. [2023-12-16 01:07:28,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 01:07:28,823 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 54 [2023-12-16 01:07:28,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:07:28,827 INFO L225 Difference]: With dead ends: 1161 [2023-12-16 01:07:28,827 INFO L226 Difference]: Without dead ends: 845 [2023-12-16 01:07:28,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 01:07:28,829 INFO L413 NwaCegarLoop]: 393 mSDtfsCounter, 312 mSDsluCounter, 590 mSDsCounter, 0 mSdLazyCounter, 699 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 983 SdHoareTripleChecker+Invalid, 731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 699 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 01:07:28,830 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [314 Valid, 983 Invalid, 731 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 699 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 01:07:28,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2023-12-16 01:07:28,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 811. [2023-12-16 01:07:28,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 811 states, 714 states have (on average 1.4621848739495797) internal successors, (1044), 723 states have internal predecessors, (1044), 63 states have call successors, (63), 29 states have call predecessors, (63), 32 states have return successors, (83), 59 states have call predecessors, (83), 61 states have call successors, (83) [2023-12-16 01:07:28,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 811 states to 811 states and 1190 transitions. [2023-12-16 01:07:28,890 INFO L78 Accepts]: Start accepts. Automaton has 811 states and 1190 transitions. Word has length 54 [2023-12-16 01:07:28,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:07:28,890 INFO L495 AbstractCegarLoop]: Abstraction has 811 states and 1190 transitions. [2023-12-16 01:07:28,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-16 01:07:28,891 INFO L276 IsEmpty]: Start isEmpty. Operand 811 states and 1190 transitions. [2023-12-16 01:07:28,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-16 01:07:28,893 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:07:28,893 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-16 01:07:28,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-16 01:07:28,893 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:07:28,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:07:28,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1508684440, now seen corresponding path program 1 times [2023-12-16 01:07:28,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:07:28,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137230307] [2023-12-16 01:07:28,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:07:28,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:07:28,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:07:28,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-16 01:07:28,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:07:28,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-16 01:07:28,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:07:28,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-16 01:07:28,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:07:28,973 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-16 01:07:28,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:07:28,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137230307] [2023-12-16 01:07:28,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137230307] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:07:28,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:07:28,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 01:07:28,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889422145] [2023-12-16 01:07:28,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:07:28,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 01:07:28,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:07:28,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 01:07:28,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 01:07:28,978 INFO L87 Difference]: Start difference. First operand 811 states and 1190 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-16 01:07:29,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:07:29,393 INFO L93 Difference]: Finished difference Result 1390 states and 1969 transitions. [2023-12-16 01:07:29,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 01:07:29,395 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 59 [2023-12-16 01:07:29,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:07:29,399 INFO L225 Difference]: With dead ends: 1390 [2023-12-16 01:07:29,399 INFO L226 Difference]: Without dead ends: 988 [2023-12-16 01:07:29,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 01:07:29,407 INFO L413 NwaCegarLoop]: 347 mSDtfsCounter, 828 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 382 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 853 SdHoareTripleChecker+Valid, 675 SdHoareTripleChecker+Invalid, 422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 01:07:29,408 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [853 Valid, 675 Invalid, 422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 382 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 01:07:29,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 988 states. [2023-12-16 01:07:29,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 988 to 939. [2023-12-16 01:07:29,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 939 states, 826 states have (on average 1.4273607748184018) internal successors, (1179), 837 states have internal predecessors, (1179), 71 states have call successors, (71), 35 states have call predecessors, (71), 40 states have return successors, (97), 67 states have call predecessors, (97), 69 states have call successors, (97) [2023-12-16 01:07:29,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 939 states to 939 states and 1347 transitions. [2023-12-16 01:07:29,465 INFO L78 Accepts]: Start accepts. Automaton has 939 states and 1347 transitions. Word has length 59 [2023-12-16 01:07:29,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:07:29,466 INFO L495 AbstractCegarLoop]: Abstraction has 939 states and 1347 transitions. [2023-12-16 01:07:29,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-16 01:07:29,466 INFO L276 IsEmpty]: Start isEmpty. Operand 939 states and 1347 transitions. [2023-12-16 01:07:29,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-16 01:07:29,469 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:07:29,469 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-16 01:07:29,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-16 01:07:29,469 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:07:29,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:07:29,470 INFO L85 PathProgramCache]: Analyzing trace with hash -1389820358, now seen corresponding path program 1 times [2023-12-16 01:07:29,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:07:29,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857304215] [2023-12-16 01:07:29,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:07:29,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:07:29,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:07:29,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-16 01:07:29,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:07:29,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 01:07:29,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:07:29,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-16 01:07:29,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:07:29,602 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-16 01:07:29,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:07:29,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857304215] [2023-12-16 01:07:29,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857304215] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:07:29,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:07:29,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 01:07:29,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596539414] [2023-12-16 01:07:29,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:07:29,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 01:07:29,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:07:29,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 01:07:29,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 01:07:29,605 INFO L87 Difference]: Start difference. First operand 939 states and 1347 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-16 01:07:30,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:07:30,231 INFO L93 Difference]: Finished difference Result 1425 states and 2009 transitions. [2023-12-16 01:07:30,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 01:07:30,232 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 60 [2023-12-16 01:07:30,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:07:30,235 INFO L225 Difference]: With dead ends: 1425 [2023-12-16 01:07:30,236 INFO L226 Difference]: Without dead ends: 887 [2023-12-16 01:07:30,237 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-16 01:07:30,240 INFO L413 NwaCegarLoop]: 342 mSDtfsCounter, 264 mSDsluCounter, 877 mSDsCounter, 0 mSdLazyCounter, 977 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 1219 SdHoareTripleChecker+Invalid, 1007 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 977 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 01:07:30,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [265 Valid, 1219 Invalid, 1007 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 977 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 01:07:30,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 887 states. [2023-12-16 01:07:30,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 887 to 814. [2023-12-16 01:07:30,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 814 states, 718 states have (on average 1.4373259052924792) internal successors, (1032), 728 states have internal predecessors, (1032), 61 states have call successors, (61), 29 states have call predecessors, (61), 33 states have return successors, (79), 57 states have call predecessors, (79), 59 states have call successors, (79) [2023-12-16 01:07:30,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 814 states to 814 states and 1172 transitions. [2023-12-16 01:07:30,277 INFO L78 Accepts]: Start accepts. Automaton has 814 states and 1172 transitions. Word has length 60 [2023-12-16 01:07:30,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:07:30,279 INFO L495 AbstractCegarLoop]: Abstraction has 814 states and 1172 transitions. [2023-12-16 01:07:30,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-16 01:07:30,280 INFO L276 IsEmpty]: Start isEmpty. Operand 814 states and 1172 transitions. [2023-12-16 01:07:30,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-16 01:07:30,281 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:07:30,281 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-16 01:07:30,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-16 01:07:30,282 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:07:30,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:07:30,282 INFO L85 PathProgramCache]: Analyzing trace with hash 407819258, now seen corresponding path program 1 times [2023-12-16 01:07:30,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:07:30,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522600143] [2023-12-16 01:07:30,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:07:30,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:07:30,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:07:30,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-16 01:07:30,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:07:30,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 01:07:30,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:07:30,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-16 01:07:30,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:07:30,376 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-16 01:07:30,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:07:30,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522600143] [2023-12-16 01:07:30,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522600143] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 01:07:30,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1161925846] [2023-12-16 01:07:30,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:07:30,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 01:07:30,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 01:07:30,384 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) [2023-12-16 01:07:30,416 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-16 01:07:30,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:07:30,519 INFO L262 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-16 01:07:30,526 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 01:07:30,651 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:07:30,651 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 01:07:30,703 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-16 01:07:30,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1161925846] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-16 01:07:30,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-16 01:07:30,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 7 [2023-12-16 01:07:30,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276471678] [2023-12-16 01:07:30,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:07:30,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 01:07:30,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:07:30,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 01:07:30,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 01:07:30,705 INFO L87 Difference]: Start difference. First operand 814 states and 1172 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-16 01:07:30,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:07:30,895 INFO L93 Difference]: Finished difference Result 863 states and 1233 transitions. [2023-12-16 01:07:30,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 01:07:30,895 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 60 [2023-12-16 01:07:30,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:07:30,900 INFO L225 Difference]: With dead ends: 863 [2023-12-16 01:07:30,900 INFO L226 Difference]: Without dead ends: 860 [2023-12-16 01:07:30,901 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-16 01:07:30,902 INFO L413 NwaCegarLoop]: 580 mSDtfsCounter, 1106 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1106 SdHoareTripleChecker+Valid, 635 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 01:07:30,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1106 Valid, 635 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 01:07:30,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 860 states. [2023-12-16 01:07:30,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 860 to 813. [2023-12-16 01:07:30,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 813 states, 718 states have (on average 1.434540389972145) internal successors, (1030), 727 states have internal predecessors, (1030), 60 states have call successors, (60), 29 states have call predecessors, (60), 33 states have return successors, (79), 57 states have call predecessors, (79), 59 states have call successors, (79) [2023-12-16 01:07:30,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 813 states to 813 states and 1169 transitions. [2023-12-16 01:07:30,962 INFO L78 Accepts]: Start accepts. Automaton has 813 states and 1169 transitions. Word has length 60 [2023-12-16 01:07:30,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:07:30,962 INFO L495 AbstractCegarLoop]: Abstraction has 813 states and 1169 transitions. [2023-12-16 01:07:30,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-16 01:07:30,963 INFO L276 IsEmpty]: Start isEmpty. Operand 813 states and 1169 transitions. [2023-12-16 01:07:30,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-16 01:07:30,964 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:07:30,964 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-16 01:07:30,975 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-16 01:07:31,175 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 [2023-12-16 01:07:31,176 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:07:31,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:07:31,176 INFO L85 PathProgramCache]: Analyzing trace with hash -243836197, now seen corresponding path program 1 times [2023-12-16 01:07:31,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:07:31,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695558075] [2023-12-16 01:07:31,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:07:31,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:07:31,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:07:31,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-16 01:07:31,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:07:31,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 01:07:31,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:07:31,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-16 01:07:31,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:07:31,278 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-16 01:07:31,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:07:31,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695558075] [2023-12-16 01:07:31,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695558075] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 01:07:31,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [567464444] [2023-12-16 01:07:31,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:07:31,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 01:07:31,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 01:07:31,280 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) [2023-12-16 01:07:31,283 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-16 01:07:31,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:07:31,401 INFO L262 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-16 01:07:31,404 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 01:07:31,626 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:07:31,627 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 01:07:31,719 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-16 01:07:31,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [567464444] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 01:07:31,720 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 01:07:31,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 10 [2023-12-16 01:07:31,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588459051] [2023-12-16 01:07:31,720 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 01:07:31,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-16 01:07:31,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:07:31,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-16 01:07:31,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-12-16 01:07:31,721 INFO L87 Difference]: Start difference. First operand 813 states and 1169 transitions. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 9 states have internal predecessors, (134), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2023-12-16 01:07:33,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:07:33,010 INFO L93 Difference]: Finished difference Result 2049 states and 2821 transitions. [2023-12-16 01:07:33,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-16 01:07:33,011 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 9 states have internal predecessors, (134), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) Word has length 61 [2023-12-16 01:07:33,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:07:33,017 INFO L225 Difference]: With dead ends: 2049 [2023-12-16 01:07:33,018 INFO L226 Difference]: Without dead ends: 1651 [2023-12-16 01:07:33,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=148, Invalid=664, Unknown=0, NotChecked=0, Total=812 [2023-12-16 01:07:33,020 INFO L413 NwaCegarLoop]: 408 mSDtfsCounter, 1016 mSDsluCounter, 2228 mSDsCounter, 0 mSdLazyCounter, 2242 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1048 SdHoareTripleChecker+Valid, 2636 SdHoareTripleChecker+Invalid, 2283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 2242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-16 01:07:33,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1048 Valid, 2636 Invalid, 2283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 2242 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-16 01:07:33,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1651 states. [2023-12-16 01:07:33,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1651 to 1142. [2023-12-16 01:07:33,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1142 states, 1010 states have (on average 1.39009900990099) internal successors, (1404), 1026 states have internal predecessors, (1404), 79 states have call successors, (79), 42 states have call predecessors, (79), 51 states have return successors, (110), 74 states have call predecessors, (110), 78 states have call successors, (110) [2023-12-16 01:07:33,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1142 states to 1142 states and 1593 transitions. [2023-12-16 01:07:33,076 INFO L78 Accepts]: Start accepts. Automaton has 1142 states and 1593 transitions. Word has length 61 [2023-12-16 01:07:33,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:07:33,076 INFO L495 AbstractCegarLoop]: Abstraction has 1142 states and 1593 transitions. [2023-12-16 01:07:33,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 9 states have internal predecessors, (134), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2023-12-16 01:07:33,077 INFO L276 IsEmpty]: Start isEmpty. Operand 1142 states and 1593 transitions. [2023-12-16 01:07:33,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-16 01:07:33,079 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:07:33,079 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-16 01:07:33,088 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-16 01:07:33,288 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 [2023-12-16 01:07:33,288 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:07:33,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:07:33,289 INFO L85 PathProgramCache]: Analyzing trace with hash 736731372, now seen corresponding path program 1 times [2023-12-16 01:07:33,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:07:33,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695311494] [2023-12-16 01:07:33,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:07:33,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:07:33,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:07:33,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-16 01:07:33,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:07:33,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 01:07:33,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:07:33,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-16 01:07:33,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:07:33,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-16 01:07:33,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:07:33,364 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-16 01:07:33,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:07:33,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695311494] [2023-12-16 01:07:33,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695311494] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:07:33,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:07:33,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 01:07:33,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343344834] [2023-12-16 01:07:33,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:07:33,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 01:07:33,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:07:33,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 01:07:33,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 01:07:33,366 INFO L87 Difference]: Start difference. First operand 1142 states and 1593 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-16 01:07:33,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:07:33,828 INFO L93 Difference]: Finished difference Result 1776 states and 2416 transitions. [2023-12-16 01:07:33,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 01:07:33,829 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 78 [2023-12-16 01:07:33,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:07:33,834 INFO L225 Difference]: With dead ends: 1776 [2023-12-16 01:07:33,834 INFO L226 Difference]: Without dead ends: 1111 [2023-12-16 01:07:33,835 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 01:07:33,837 INFO L413 NwaCegarLoop]: 354 mSDtfsCounter, 841 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 867 SdHoareTripleChecker+Valid, 691 SdHoareTripleChecker+Invalid, 424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 01:07:33,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [867 Valid, 691 Invalid, 424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 01:07:33,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1111 states. [2023-12-16 01:07:33,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1111 to 1034. [2023-12-16 01:07:33,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1034 states, 915 states have (on average 1.394535519125683) internal successors, (1276), 931 states have internal predecessors, (1276), 72 states have call successors, (72), 37 states have call predecessors, (72), 45 states have return successors, (99), 66 states have call predecessors, (99), 71 states have call successors, (99) [2023-12-16 01:07:33,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1034 states to 1034 states and 1447 transitions. [2023-12-16 01:07:33,882 INFO L78 Accepts]: Start accepts. Automaton has 1034 states and 1447 transitions. Word has length 78 [2023-12-16 01:07:33,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:07:33,882 INFO L495 AbstractCegarLoop]: Abstraction has 1034 states and 1447 transitions. [2023-12-16 01:07:33,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-16 01:07:33,883 INFO L276 IsEmpty]: Start isEmpty. Operand 1034 states and 1447 transitions. [2023-12-16 01:07:33,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-16 01:07:33,885 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:07:33,885 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:07:33,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-16 01:07:33,885 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:07:33,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:07:33,886 INFO L85 PathProgramCache]: Analyzing trace with hash -853344380, now seen corresponding path program 1 times [2023-12-16 01:07:33,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:07:33,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447948687] [2023-12-16 01:07:33,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:07:33,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:07:33,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:07:33,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-16 01:07:33,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:07:33,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 01:07:33,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:07:33,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-12-16 01:07:33,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:07:33,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-16 01:07:33,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:07:33,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-16 01:07:33,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:07:33,971 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 16 proven. 20 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-16 01:07:33,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:07:33,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447948687] [2023-12-16 01:07:33,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447948687] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 01:07:33,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [460610733] [2023-12-16 01:07:33,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:07:33,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 01:07:33,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 01:07:33,973 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) [2023-12-16 01:07:33,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-16 01:07:34,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:07:34,099 INFO L262 TraceCheckSpWp]: Trace formula consists of 450 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 01:07:34,102 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 01:07:34,120 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-16 01:07:34,121 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 01:07:34,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [460610733] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:07:34,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 01:07:34,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-12-16 01:07:34,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029555211] [2023-12-16 01:07:34,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:07:34,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:07:34,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:07:34,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:07:34,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-16 01:07:34,122 INFO L87 Difference]: Start difference. First operand 1034 states and 1447 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2023-12-16 01:07:34,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:07:34,219 INFO L93 Difference]: Finished difference Result 1319 states and 1805 transitions. [2023-12-16 01:07:34,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:07:34,220 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) Word has length 92 [2023-12-16 01:07:34,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:07:34,221 INFO L225 Difference]: With dead ends: 1319 [2023-12-16 01:07:34,221 INFO L226 Difference]: Without dead ends: 324 [2023-12-16 01:07:34,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-16 01:07:34,224 INFO L413 NwaCegarLoop]: 596 mSDtfsCounter, 55 mSDsluCounter, 540 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 1136 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 01:07:34,225 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 1136 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 01:07:34,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2023-12-16 01:07:34,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 324. [2023-12-16 01:07:34,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 292 states have (on average 1.63013698630137) internal successors, (476), 293 states have internal predecessors, (476), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-12-16 01:07:34,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 526 transitions. [2023-12-16 01:07:34,239 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 526 transitions. Word has length 92 [2023-12-16 01:07:34,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:07:34,239 INFO L495 AbstractCegarLoop]: Abstraction has 324 states and 526 transitions. [2023-12-16 01:07:34,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2023-12-16 01:07:34,239 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 526 transitions. [2023-12-16 01:07:34,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-16 01:07:34,240 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:07:34,240 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:07:34,250 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-16 01:07:34,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 01:07:34,450 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:07:34,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:07:34,451 INFO L85 PathProgramCache]: Analyzing trace with hash -1592151108, now seen corresponding path program 1 times [2023-12-16 01:07:34,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:07:34,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579962026] [2023-12-16 01:07:34,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:07:34,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:07:34,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:07:34,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 01:07:34,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:07:34,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-16 01:07:34,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:07:34,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-16 01:07:34,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:07:34,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-16 01:07:34,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:07:34,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-16 01:07:34,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:07:34,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:07:34,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:07:34,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579962026] [2023-12-16 01:07:34,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579962026] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:07:34,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:07:34,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 01:07:34,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325724201] [2023-12-16 01:07:34,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:07:34,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 01:07:34,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:07:34,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 01:07:34,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 01:07:34,663 INFO L87 Difference]: Start difference. First operand 324 states and 526 transitions. Second operand has 5 states, 5 states have (on average 28.2) internal successors, (141), 3 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 01:07:36,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:07:36,253 INFO L93 Difference]: Finished difference Result 760 states and 1254 transitions. [2023-12-16 01:07:36,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 01:07:36,253 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 3 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 151 [2023-12-16 01:07:36,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:07:36,256 INFO L225 Difference]: With dead ends: 760 [2023-12-16 01:07:36,256 INFO L226 Difference]: Without dead ends: 444 [2023-12-16 01:07:36,257 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-16 01:07:36,258 INFO L413 NwaCegarLoop]: 278 mSDtfsCounter, 903 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 982 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 926 SdHoareTripleChecker+Valid, 581 SdHoareTripleChecker+Invalid, 1036 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 982 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-16 01:07:36,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [926 Valid, 581 Invalid, 1036 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 982 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-16 01:07:36,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2023-12-16 01:07:36,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 324. [2023-12-16 01:07:36,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 292 states have (on average 1.6267123287671232) internal successors, (475), 293 states have internal predecessors, (475), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-12-16 01:07:36,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 525 transitions. [2023-12-16 01:07:36,287 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 525 transitions. Word has length 151 [2023-12-16 01:07:36,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:07:36,287 INFO L495 AbstractCegarLoop]: Abstraction has 324 states and 525 transitions. [2023-12-16 01:07:36,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 3 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 01:07:36,287 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 525 transitions. [2023-12-16 01:07:36,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-16 01:07:36,291 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:07:36,291 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:07:36,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-16 01:07:36,291 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:07:36,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:07:36,292 INFO L85 PathProgramCache]: Analyzing trace with hash -1051721602, now seen corresponding path program 1 times [2023-12-16 01:07:36,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:07:36,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539187459] [2023-12-16 01:07:36,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:07:36,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:07:36,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:07:36,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 01:07:36,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:07:36,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-16 01:07:36,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:07:36,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-16 01:07:36,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:07:36,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-16 01:07:36,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:07:36,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-16 01:07:36,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:07:36,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:07:36,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:07:36,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539187459] [2023-12-16 01:07:36,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539187459] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:07:36,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:07:36,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 01:07:36,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271142169] [2023-12-16 01:07:36,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:07:36,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 01:07:36,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:07:36,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 01:07:36,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 01:07:36,501 INFO L87 Difference]: Start difference. First operand 324 states and 525 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 01:07:38,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:07:38,960 INFO L93 Difference]: Finished difference Result 776 states and 1291 transitions. [2023-12-16 01:07:38,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-16 01:07:38,961 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 151 [2023-12-16 01:07:38,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:07:38,963 INFO L225 Difference]: With dead ends: 776 [2023-12-16 01:07:38,963 INFO L226 Difference]: Without dead ends: 468 [2023-12-16 01:07:38,965 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2023-12-16 01:07:38,965 INFO L413 NwaCegarLoop]: 277 mSDtfsCounter, 985 mSDsluCounter, 770 mSDsCounter, 0 mSdLazyCounter, 1959 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1011 SdHoareTripleChecker+Valid, 1047 SdHoareTripleChecker+Invalid, 2016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1959 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-16 01:07:38,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1011 Valid, 1047 Invalid, 2016 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1959 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-16 01:07:38,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2023-12-16 01:07:38,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 326. [2023-12-16 01:07:38,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 294 states have (on average 1.619047619047619) internal successors, (476), 295 states have internal predecessors, (476), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-12-16 01:07:38,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 526 transitions. [2023-12-16 01:07:38,983 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 526 transitions. Word has length 151 [2023-12-16 01:07:38,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:07:38,983 INFO L495 AbstractCegarLoop]: Abstraction has 326 states and 526 transitions. [2023-12-16 01:07:38,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 01:07:38,984 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 526 transitions. [2023-12-16 01:07:38,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-16 01:07:38,985 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:07:38,985 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:07:38,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-16 01:07:38,985 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:07:38,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:07:38,986 INFO L85 PathProgramCache]: Analyzing trace with hash 767542782, now seen corresponding path program 1 times [2023-12-16 01:07:38,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:07:38,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093158601] [2023-12-16 01:07:38,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:07:38,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:07:39,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:07:39,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 01:07:39,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:07:39,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-16 01:07:39,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:07:39,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-16 01:07:39,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:07:39,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-16 01:07:39,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:07:39,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-16 01:07:39,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:07:39,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:07:39,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:07:39,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093158601] [2023-12-16 01:07:39,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093158601] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:07:39,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:07:39,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-16 01:07:39,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407604666] [2023-12-16 01:07:39,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:07:39,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 01:07:39,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:07:39,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 01:07:39,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-16 01:07:39,266 INFO L87 Difference]: Start difference. First operand 326 states and 526 transitions. Second operand has 8 states, 8 states have (on average 17.625) internal successors, (141), 6 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 01:07:42,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:07:42,947 INFO L93 Difference]: Finished difference Result 1227 states and 2054 transitions. [2023-12-16 01:07:42,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-16 01:07:42,947 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 6 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 151 [2023-12-16 01:07:42,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:07:42,952 INFO L225 Difference]: With dead ends: 1227 [2023-12-16 01:07:42,952 INFO L226 Difference]: Without dead ends: 919 [2023-12-16 01:07:42,954 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=99, Invalid=321, Unknown=0, NotChecked=0, Total=420 [2023-12-16 01:07:42,954 INFO L413 NwaCegarLoop]: 247 mSDtfsCounter, 1435 mSDsluCounter, 1209 mSDsCounter, 0 mSdLazyCounter, 3203 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1455 SdHoareTripleChecker+Valid, 1456 SdHoareTripleChecker+Invalid, 3312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 3203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-16 01:07:42,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1455 Valid, 1456 Invalid, 3312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 3203 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-16 01:07:42,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 919 states. [2023-12-16 01:07:42,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 919 to 656. [2023-12-16 01:07:42,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 656 states, 597 states have (on average 1.626465661641541) internal successors, (971), 599 states have internal predecessors, (971), 45 states have call successors, (45), 12 states have call predecessors, (45), 13 states have return successors, (48), 45 states have call predecessors, (48), 45 states have call successors, (48) [2023-12-16 01:07:43,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 656 states to 656 states and 1064 transitions. [2023-12-16 01:07:43,007 INFO L78 Accepts]: Start accepts. Automaton has 656 states and 1064 transitions. Word has length 151 [2023-12-16 01:07:43,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:07:43,008 INFO L495 AbstractCegarLoop]: Abstraction has 656 states and 1064 transitions. [2023-12-16 01:07:43,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 6 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 01:07:43,009 INFO L276 IsEmpty]: Start isEmpty. Operand 656 states and 1064 transitions. [2023-12-16 01:07:43,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-16 01:07:43,010 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:07:43,010 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:07:43,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-16 01:07:43,011 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:07:43,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:07:43,011 INFO L85 PathProgramCache]: Analyzing trace with hash 165236672, now seen corresponding path program 1 times [2023-12-16 01:07:43,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:07:43,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24201270] [2023-12-16 01:07:43,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:07:43,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:07:43,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:07:43,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 01:07:43,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:07:43,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-16 01:07:43,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:07:43,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-16 01:07:43,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:07:43,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-16 01:07:43,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:07:43,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-16 01:07:43,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:07:43,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:07:43,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:07:43,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24201270] [2023-12-16 01:07:43,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24201270] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:07:43,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:07:43,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 01:07:43,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909567629] [2023-12-16 01:07:43,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:07:43,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 01:07:43,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:07:43,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 01:07:43,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 01:07:43,304 INFO L87 Difference]: Start difference. First operand 656 states and 1064 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 01:07:46,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:07:46,457 INFO L93 Difference]: Finished difference Result 2010 states and 3310 transitions. [2023-12-16 01:07:46,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-16 01:07:46,457 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 151 [2023-12-16 01:07:46,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:07:46,463 INFO L225 Difference]: With dead ends: 2010 [2023-12-16 01:07:46,463 INFO L226 Difference]: Without dead ends: 1372 [2023-12-16 01:07:46,465 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-16 01:07:46,466 INFO L413 NwaCegarLoop]: 299 mSDtfsCounter, 1505 mSDsluCounter, 997 mSDsCounter, 0 mSdLazyCounter, 2997 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1523 SdHoareTripleChecker+Valid, 1296 SdHoareTripleChecker+Invalid, 3086 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 2997 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-16 01:07:46,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1523 Valid, 1296 Invalid, 3086 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 2997 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-16 01:07:46,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1372 states. [2023-12-16 01:07:46,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1372 to 959. [2023-12-16 01:07:46,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 959 states, 873 states have (on average 1.6197021764032073) internal successors, (1414), 876 states have internal predecessors, (1414), 65 states have call successors, (65), 18 states have call predecessors, (65), 20 states have return successors, (70), 66 states have call predecessors, (70), 65 states have call successors, (70) [2023-12-16 01:07:46,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 959 states to 959 states and 1549 transitions. [2023-12-16 01:07:46,518 INFO L78 Accepts]: Start accepts. Automaton has 959 states and 1549 transitions. Word has length 151 [2023-12-16 01:07:46,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:07:46,518 INFO L495 AbstractCegarLoop]: Abstraction has 959 states and 1549 transitions. [2023-12-16 01:07:46,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 01:07:46,519 INFO L276 IsEmpty]: Start isEmpty. Operand 959 states and 1549 transitions. [2023-12-16 01:07:46,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-16 01:07:46,520 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:07:46,521 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:07:46,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-16 01:07:46,521 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:07:46,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:07:46,521 INFO L85 PathProgramCache]: Analyzing trace with hash 840396798, now seen corresponding path program 1 times [2023-12-16 01:07:46,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:07:46,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734547049] [2023-12-16 01:07:46,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:07:46,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:07:46,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:07:46,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 01:07:46,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:07:46,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-16 01:07:46,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:07:46,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-16 01:07:46,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:07:46,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-16 01:07:46,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:07:46,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-16 01:07:46,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:07:46,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:07:46,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:07:46,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734547049] [2023-12-16 01:07:46,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734547049] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:07:46,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:07:46,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 01:07:46,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60138758] [2023-12-16 01:07:46,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:07:46,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 01:07:46,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:07:46,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 01:07:46,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-16 01:07:46,806 INFO L87 Difference]: Start difference. First operand 959 states and 1549 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 01:07:48,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:07:48,430 INFO L93 Difference]: Finished difference Result 2329 states and 3833 transitions. [2023-12-16 01:07:48,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 01:07:48,430 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 151 [2023-12-16 01:07:48,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:07:48,436 INFO L225 Difference]: With dead ends: 2329 [2023-12-16 01:07:48,436 INFO L226 Difference]: Without dead ends: 1388 [2023-12-16 01:07:48,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-16 01:07:48,440 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 1007 mSDsluCounter, 719 mSDsCounter, 0 mSdLazyCounter, 1760 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1026 SdHoareTripleChecker+Valid, 953 SdHoareTripleChecker+Invalid, 1823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 1760 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-16 01:07:48,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1026 Valid, 953 Invalid, 1823 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 1760 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-16 01:07:48,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1388 states. [2023-12-16 01:07:48,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1388 to 959. [2023-12-16 01:07:48,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 959 states, 873 states have (on average 1.6162657502863689) internal successors, (1411), 876 states have internal predecessors, (1411), 65 states have call successors, (65), 18 states have call predecessors, (65), 20 states have return successors, (70), 66 states have call predecessors, (70), 65 states have call successors, (70) [2023-12-16 01:07:48,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 959 states to 959 states and 1546 transitions. [2023-12-16 01:07:48,491 INFO L78 Accepts]: Start accepts. Automaton has 959 states and 1546 transitions. Word has length 151 [2023-12-16 01:07:48,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:07:48,491 INFO L495 AbstractCegarLoop]: Abstraction has 959 states and 1546 transitions. [2023-12-16 01:07:48,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 01:07:48,492 INFO L276 IsEmpty]: Start isEmpty. Operand 959 states and 1546 transitions. [2023-12-16 01:07:48,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-16 01:07:48,493 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:07:48,493 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:07:48,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-16 01:07:48,493 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:07:48,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:07:48,494 INFO L85 PathProgramCache]: Analyzing trace with hash 255625148, now seen corresponding path program 1 times [2023-12-16 01:07:48,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:07:48,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458912634] [2023-12-16 01:07:48,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:07:48,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:07:48,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:07:48,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 01:07:48,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:07:48,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-16 01:07:48,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:07:48,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-16 01:07:48,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:07:48,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-16 01:07:48,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:07:48,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-16 01:07:48,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:07:48,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:07:48,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:07:48,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458912634] [2023-12-16 01:07:48,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458912634] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:07:48,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:07:48,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 01:07:48,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961045034] [2023-12-16 01:07:48,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:07:48,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 01:07:48,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:07:48,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 01:07:48,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-16 01:07:48,716 INFO L87 Difference]: Start difference. First operand 959 states and 1546 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 01:07:50,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:07:50,268 INFO L93 Difference]: Finished difference Result 2325 states and 3816 transitions. [2023-12-16 01:07:50,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 01:07:50,269 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 151 [2023-12-16 01:07:50,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:07:50,274 INFO L225 Difference]: With dead ends: 2325 [2023-12-16 01:07:50,275 INFO L226 Difference]: Without dead ends: 1384 [2023-12-16 01:07:50,277 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-16 01:07:50,277 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 1147 mSDsluCounter, 568 mSDsCounter, 0 mSdLazyCounter, 1572 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1166 SdHoareTripleChecker+Valid, 802 SdHoareTripleChecker+Invalid, 1660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-16 01:07:50,278 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1166 Valid, 802 Invalid, 1660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 1572 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-16 01:07:50,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1384 states. [2023-12-16 01:07:50,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1384 to 959. [2023-12-16 01:07:50,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 959 states, 873 states have (on average 1.6128293241695304) internal successors, (1408), 876 states have internal predecessors, (1408), 65 states have call successors, (65), 18 states have call predecessors, (65), 20 states have return successors, (70), 66 states have call predecessors, (70), 65 states have call successors, (70) [2023-12-16 01:07:50,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 959 states to 959 states and 1543 transitions. [2023-12-16 01:07:50,332 INFO L78 Accepts]: Start accepts. Automaton has 959 states and 1543 transitions. Word has length 151 [2023-12-16 01:07:50,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:07:50,332 INFO L495 AbstractCegarLoop]: Abstraction has 959 states and 1543 transitions. [2023-12-16 01:07:50,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 01:07:50,332 INFO L276 IsEmpty]: Start isEmpty. Operand 959 states and 1543 transitions. [2023-12-16 01:07:50,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-16 01:07:50,333 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:07:50,334 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:07:50,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-16 01:07:50,334 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:07:50,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:07:50,334 INFO L85 PathProgramCache]: Analyzing trace with hash -178880450, now seen corresponding path program 1 times [2023-12-16 01:07:50,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:07:50,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746249221] [2023-12-16 01:07:50,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:07:50,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:07:50,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:07:50,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 01:07:50,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:07:50,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-16 01:07:50,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:07:50,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-16 01:07:50,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:07:50,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-16 01:07:50,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:07:50,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-16 01:07:50,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:07:50,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:07:50,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:07:50,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746249221] [2023-12-16 01:07:50,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746249221] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:07:50,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:07:50,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 01:07:50,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892745741] [2023-12-16 01:07:50,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:07:50,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 01:07:50,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:07:50,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 01:07:50,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-16 01:07:50,580 INFO L87 Difference]: Start difference. First operand 959 states and 1543 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 01:07:52,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:07:52,135 INFO L93 Difference]: Finished difference Result 2321 states and 3799 transitions. [2023-12-16 01:07:52,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 01:07:52,135 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 151 [2023-12-16 01:07:52,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:07:52,141 INFO L225 Difference]: With dead ends: 2321 [2023-12-16 01:07:52,141 INFO L226 Difference]: Without dead ends: 1380 [2023-12-16 01:07:52,144 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-16 01:07:52,145 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 1145 mSDsluCounter, 568 mSDsCounter, 0 mSdLazyCounter, 1558 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1164 SdHoareTripleChecker+Valid, 802 SdHoareTripleChecker+Invalid, 1646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-16 01:07:52,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1164 Valid, 802 Invalid, 1646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 1558 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-16 01:07:52,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1380 states. [2023-12-16 01:07:52,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1380 to 959. [2023-12-16 01:07:52,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 959 states, 873 states have (on average 1.609392898052692) internal successors, (1405), 876 states have internal predecessors, (1405), 65 states have call successors, (65), 18 states have call predecessors, (65), 20 states have return successors, (70), 66 states have call predecessors, (70), 65 states have call successors, (70) [2023-12-16 01:07:52,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 959 states to 959 states and 1540 transitions. [2023-12-16 01:07:52,202 INFO L78 Accepts]: Start accepts. Automaton has 959 states and 1540 transitions. Word has length 151 [2023-12-16 01:07:52,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:07:52,202 INFO L495 AbstractCegarLoop]: Abstraction has 959 states and 1540 transitions. [2023-12-16 01:07:52,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 01:07:52,203 INFO L276 IsEmpty]: Start isEmpty. Operand 959 states and 1540 transitions. [2023-12-16 01:07:52,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-16 01:07:52,204 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:07:52,204 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:07:52,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-16 01:07:52,204 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:07:52,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:07:52,205 INFO L85 PathProgramCache]: Analyzing trace with hash -608538756, now seen corresponding path program 1 times [2023-12-16 01:07:52,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:07:52,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527193272] [2023-12-16 01:07:52,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:07:52,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:07:52,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:07:52,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 01:07:52,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:07:52,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-16 01:07:52,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:07:52,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-16 01:07:52,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:07:52,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-16 01:07:52,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:07:52,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-16 01:07:52,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:07:52,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:07:52,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:07:52,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527193272] [2023-12-16 01:07:52,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527193272] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:07:52,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:07:52,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 01:07:52,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358155700] [2023-12-16 01:07:52,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:07:52,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 01:07:52,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:07:52,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 01:07:52,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 01:07:52,446 INFO L87 Difference]: Start difference. First operand 959 states and 1540 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 01:07:55,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:07:55,842 INFO L93 Difference]: Finished difference Result 3167 states and 5159 transitions. [2023-12-16 01:07:55,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-16 01:07:55,848 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 151 [2023-12-16 01:07:55,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:07:55,859 INFO L225 Difference]: With dead ends: 3167 [2023-12-16 01:07:55,859 INFO L226 Difference]: Without dead ends: 2226 [2023-12-16 01:07:55,863 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-16 01:07:55,864 INFO L413 NwaCegarLoop]: 430 mSDtfsCounter, 1400 mSDsluCounter, 1425 mSDsCounter, 0 mSdLazyCounter, 3340 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1418 SdHoareTripleChecker+Valid, 1855 SdHoareTripleChecker+Invalid, 3401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 3340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-16 01:07:55,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1418 Valid, 1855 Invalid, 3401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 3340 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-16 01:07:55,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2226 states. [2023-12-16 01:07:55,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2226 to 1578. [2023-12-16 01:07:55,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1578 states, 1438 states have (on average 1.6022253129346313) internal successors, (2304), 1443 states have internal predecessors, (2304), 105 states have call successors, (105), 30 states have call predecessors, (105), 34 states have return successors, (118), 108 states have call predecessors, (118), 105 states have call successors, (118) [2023-12-16 01:07:55,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 2527 transitions. [2023-12-16 01:07:55,960 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 2527 transitions. Word has length 151 [2023-12-16 01:07:55,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:07:55,960 INFO L495 AbstractCegarLoop]: Abstraction has 1578 states and 2527 transitions. [2023-12-16 01:07:55,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 01:07:55,960 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 2527 transitions. [2023-12-16 01:07:55,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-16 01:07:55,962 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:07:55,962 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:07:55,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-16 01:07:55,963 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:07:55,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:07:55,963 INFO L85 PathProgramCache]: Analyzing trace with hash -1315135362, now seen corresponding path program 1 times [2023-12-16 01:07:55,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:07:55,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165930424] [2023-12-16 01:07:55,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:07:55,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:07:55,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:07:56,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 01:07:56,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:07:56,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-16 01:07:56,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:07:56,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-16 01:07:56,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:07:56,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-16 01:07:56,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:07:56,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-16 01:07:56,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:07:56,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:07:56,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:07:56,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165930424] [2023-12-16 01:07:56,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165930424] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:07:56,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:07:56,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 01:07:56,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715552880] [2023-12-16 01:07:56,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:07:56,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 01:07:56,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:07:56,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 01:07:56,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-16 01:07:56,194 INFO L87 Difference]: Start difference. First operand 1578 states and 2527 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 01:07:57,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:07:57,643 INFO L93 Difference]: Finished difference Result 3773 states and 6134 transitions. [2023-12-16 01:07:57,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 01:07:57,644 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 151 [2023-12-16 01:07:57,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:07:57,652 INFO L225 Difference]: With dead ends: 3773 [2023-12-16 01:07:57,652 INFO L226 Difference]: Without dead ends: 2213 [2023-12-16 01:07:57,656 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-16 01:07:57,656 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 1144 mSDsluCounter, 568 mSDsCounter, 0 mSdLazyCounter, 1532 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1163 SdHoareTripleChecker+Valid, 802 SdHoareTripleChecker+Invalid, 1621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-16 01:07:57,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1163 Valid, 802 Invalid, 1621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1532 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-16 01:07:57,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2213 states. [2023-12-16 01:07:57,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2213 to 1578. [2023-12-16 01:07:57,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1578 states, 1438 states have (on average 1.5987482614742698) internal successors, (2299), 1443 states have internal predecessors, (2299), 105 states have call successors, (105), 30 states have call predecessors, (105), 34 states have return successors, (118), 108 states have call predecessors, (118), 105 states have call successors, (118) [2023-12-16 01:07:57,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 2522 transitions. [2023-12-16 01:07:57,749 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 2522 transitions. Word has length 151 [2023-12-16 01:07:57,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:07:57,749 INFO L495 AbstractCegarLoop]: Abstraction has 1578 states and 2522 transitions. [2023-12-16 01:07:57,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 01:07:57,750 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 2522 transitions. [2023-12-16 01:07:57,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-16 01:07:57,751 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:07:57,751 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:07:57,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-16 01:07:57,752 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:07:57,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:07:57,753 INFO L85 PathProgramCache]: Analyzing trace with hash -368097476, now seen corresponding path program 1 times [2023-12-16 01:07:57,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:07:57,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90688842] [2023-12-16 01:07:57,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:07:57,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:07:57,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:07:57,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 01:07:57,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:07:57,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-16 01:07:57,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:07:57,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-16 01:07:57,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:07:57,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-16 01:07:57,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:07:57,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-16 01:07:57,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:07:57,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:07:57,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:07:57,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90688842] [2023-12-16 01:07:57,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90688842] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:07:57,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:07:57,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 01:07:57,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282102522] [2023-12-16 01:07:57,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:07:57,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 01:07:57,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:07:57,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 01:07:57,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 01:07:57,967 INFO L87 Difference]: Start difference. First operand 1578 states and 2522 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 01:08:01,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:08:01,201 INFO L93 Difference]: Finished difference Result 5412 states and 8754 transitions. [2023-12-16 01:08:01,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-16 01:08:01,204 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 151 [2023-12-16 01:08:01,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:08:01,222 INFO L225 Difference]: With dead ends: 5412 [2023-12-16 01:08:01,223 INFO L226 Difference]: Without dead ends: 3852 [2023-12-16 01:08:01,229 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-16 01:08:01,230 INFO L413 NwaCegarLoop]: 430 mSDtfsCounter, 1388 mSDsluCounter, 1425 mSDsCounter, 0 mSdLazyCounter, 3298 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1406 SdHoareTripleChecker+Valid, 1855 SdHoareTripleChecker+Invalid, 3360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 3298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-16 01:08:01,230 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1406 Valid, 1855 Invalid, 3360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 3298 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-16 01:08:01,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3852 states. [2023-12-16 01:08:01,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3852 to 2816. [2023-12-16 01:08:01,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2816 states, 2568 states have (on average 1.5915109034267914) internal successors, (4087), 2577 states have internal predecessors, (4087), 185 states have call successors, (185), 54 states have call predecessors, (185), 62 states have return successors, (220), 192 states have call predecessors, (220), 185 states have call successors, (220) [2023-12-16 01:08:01,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2816 states to 2816 states and 4492 transitions. [2023-12-16 01:08:01,435 INFO L78 Accepts]: Start accepts. Automaton has 2816 states and 4492 transitions. Word has length 151 [2023-12-16 01:08:01,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:08:01,436 INFO L495 AbstractCegarLoop]: Abstraction has 2816 states and 4492 transitions. [2023-12-16 01:08:01,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 01:08:01,437 INFO L276 IsEmpty]: Start isEmpty. Operand 2816 states and 4492 transitions. [2023-12-16 01:08:01,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-16 01:08:01,439 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:08:01,439 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:08:01,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-16 01:08:01,440 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:08:01,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:08:01,440 INFO L85 PathProgramCache]: Analyzing trace with hash 493736126, now seen corresponding path program 1 times [2023-12-16 01:08:01,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:08:01,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549259576] [2023-12-16 01:08:01,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:08:01,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:08:01,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:01,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 01:08:01,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:01,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-16 01:08:01,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:01,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-16 01:08:01,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:01,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-16 01:08:01,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:01,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-16 01:08:01,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:01,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:08:01,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:08:01,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549259576] [2023-12-16 01:08:01,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549259576] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:08:01,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:08:01,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 01:08:01,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799318260] [2023-12-16 01:08:01,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:08:01,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 01:08:01,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:08:01,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 01:08:01,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 01:08:01,682 INFO L87 Difference]: Start difference. First operand 2816 states and 4492 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 01:08:04,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:08:04,634 INFO L93 Difference]: Finished difference Result 9908 states and 15998 transitions. [2023-12-16 01:08:04,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-16 01:08:04,635 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 151 [2023-12-16 01:08:04,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:08:04,681 INFO L225 Difference]: With dead ends: 9908 [2023-12-16 01:08:04,681 INFO L226 Difference]: Without dead ends: 7110 [2023-12-16 01:08:04,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-16 01:08:04,694 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 1481 mSDsluCounter, 942 mSDsCounter, 0 mSdLazyCounter, 2714 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1499 SdHoareTripleChecker+Valid, 1187 SdHoareTripleChecker+Invalid, 2818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 2714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-16 01:08:04,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1499 Valid, 1187 Invalid, 2818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 2714 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-16 01:08:04,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7110 states. [2023-12-16 01:08:05,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7110 to 5297. [2023-12-16 01:08:05,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5297 states, 4833 states have (on average 1.5867990895923856) internal successors, (7669), 4850 states have internal predecessors, (7669), 345 states have call successors, (345), 102 states have call predecessors, (345), 118 states have return successors, (442), 360 states have call predecessors, (442), 345 states have call successors, (442) [2023-12-16 01:08:05,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5297 states to 5297 states and 8456 transitions. [2023-12-16 01:08:05,035 INFO L78 Accepts]: Start accepts. Automaton has 5297 states and 8456 transitions. Word has length 151 [2023-12-16 01:08:05,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:08:05,035 INFO L495 AbstractCegarLoop]: Abstraction has 5297 states and 8456 transitions. [2023-12-16 01:08:05,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 01:08:05,035 INFO L276 IsEmpty]: Start isEmpty. Operand 5297 states and 8456 transitions. [2023-12-16 01:08:05,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-16 01:08:05,039 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:08:05,039 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:08:05,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-16 01:08:05,040 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:08:05,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:08:05,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1556672772, now seen corresponding path program 1 times [2023-12-16 01:08:05,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:08:05,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23410538] [2023-12-16 01:08:05,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:08:05,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:08:05,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:05,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 01:08:05,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:05,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-16 01:08:05,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:05,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-16 01:08:05,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:05,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-16 01:08:05,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:05,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-16 01:08:05,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:05,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:08:05,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:08:05,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23410538] [2023-12-16 01:08:05,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23410538] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:08:05,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:08:05,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 01:08:05,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444327375] [2023-12-16 01:08:05,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:08:05,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 01:08:05,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:08:05,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 01:08:05,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-16 01:08:05,300 INFO L87 Difference]: Start difference. First operand 5297 states and 8456 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 01:08:06,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:08:06,838 INFO L93 Difference]: Finished difference Result 12439 states and 20131 transitions. [2023-12-16 01:08:06,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 01:08:06,838 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 151 [2023-12-16 01:08:06,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:08:06,864 INFO L225 Difference]: With dead ends: 12439 [2023-12-16 01:08:06,864 INFO L226 Difference]: Without dead ends: 7160 [2023-12-16 01:08:06,881 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-16 01:08:06,882 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 1148 mSDsluCounter, 568 mSDsCounter, 0 mSdLazyCounter, 1491 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1167 SdHoareTripleChecker+Valid, 802 SdHoareTripleChecker+Invalid, 1580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-16 01:08:06,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1167 Valid, 802 Invalid, 1580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1491 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-16 01:08:06,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7160 states. [2023-12-16 01:08:07,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7160 to 5297. [2023-12-16 01:08:07,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5297 states, 4833 states have (on average 1.5832816056279744) internal successors, (7652), 4850 states have internal predecessors, (7652), 345 states have call successors, (345), 102 states have call predecessors, (345), 118 states have return successors, (442), 360 states have call predecessors, (442), 345 states have call successors, (442) [2023-12-16 01:08:07,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5297 states to 5297 states and 8439 transitions. [2023-12-16 01:08:07,245 INFO L78 Accepts]: Start accepts. Automaton has 5297 states and 8439 transitions. Word has length 151 [2023-12-16 01:08:07,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:08:07,245 INFO L495 AbstractCegarLoop]: Abstraction has 5297 states and 8439 transitions. [2023-12-16 01:08:07,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 01:08:07,245 INFO L276 IsEmpty]: Start isEmpty. Operand 5297 states and 8439 transitions. [2023-12-16 01:08:07,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-16 01:08:07,250 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:08:07,250 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:08:07,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-16 01:08:07,250 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:08:07,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:08:07,251 INFO L85 PathProgramCache]: Analyzing trace with hash 1645659322, now seen corresponding path program 1 times [2023-12-16 01:08:07,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:08:07,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295662032] [2023-12-16 01:08:07,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:08:07,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:08:07,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:07,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 01:08:07,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:07,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-16 01:08:07,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:07,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-16 01:08:07,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:07,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-16 01:08:07,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:07,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-16 01:08:07,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:07,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:08:07,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:08:07,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295662032] [2023-12-16 01:08:07,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295662032] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:08:07,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:08:07,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 01:08:07,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50118576] [2023-12-16 01:08:07,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:08:07,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 01:08:07,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:08:07,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 01:08:07,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 01:08:07,494 INFO L87 Difference]: Start difference. First operand 5297 states and 8439 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 01:08:11,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:08:11,247 INFO L93 Difference]: Finished difference Result 21231 states and 34150 transitions. [2023-12-16 01:08:11,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-16 01:08:11,248 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 151 [2023-12-16 01:08:11,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:08:11,292 INFO L225 Difference]: With dead ends: 21231 [2023-12-16 01:08:11,292 INFO L226 Difference]: Without dead ends: 15952 [2023-12-16 01:08:11,307 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-16 01:08:11,307 INFO L413 NwaCegarLoop]: 428 mSDtfsCounter, 1780 mSDsluCounter, 1420 mSDsCounter, 0 mSdLazyCounter, 3218 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1810 SdHoareTripleChecker+Valid, 1848 SdHoareTripleChecker+Invalid, 3283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 3218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-16 01:08:11,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1810 Valid, 1848 Invalid, 3283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 3218 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-16 01:08:11,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15952 states. [2023-12-16 01:08:11,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15952 to 10276. [2023-12-16 01:08:11,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10276 states, 9396 states have (on average 1.581311196253725) internal successors, (14858), 9429 states have internal predecessors, (14858), 649 states have call successors, (649), 198 states have call predecessors, (649), 230 states have return successors, (924), 680 states have call predecessors, (924), 649 states have call successors, (924) [2023-12-16 01:08:12,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10276 states to 10276 states and 16431 transitions. [2023-12-16 01:08:12,008 INFO L78 Accepts]: Start accepts. Automaton has 10276 states and 16431 transitions. Word has length 151 [2023-12-16 01:08:12,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:08:12,008 INFO L495 AbstractCegarLoop]: Abstraction has 10276 states and 16431 transitions. [2023-12-16 01:08:12,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 01:08:12,009 INFO L276 IsEmpty]: Start isEmpty. Operand 10276 states and 16431 transitions. [2023-12-16 01:08:12,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-16 01:08:12,016 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:08:12,016 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:08:12,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-16 01:08:12,016 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:08:12,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:08:12,017 INFO L85 PathProgramCache]: Analyzing trace with hash 363487036, now seen corresponding path program 1 times [2023-12-16 01:08:12,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:08:12,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15410783] [2023-12-16 01:08:12,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:08:12,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:08:12,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:12,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 01:08:12,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:12,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-16 01:08:12,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:12,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-16 01:08:12,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:12,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-16 01:08:12,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:12,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-16 01:08:12,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:08:12,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:08:12,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:08:12,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15410783] [2023-12-16 01:08:12,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15410783] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:08:12,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:08:12,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 01:08:12,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340654105] [2023-12-16 01:08:12,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:08:12,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 01:08:12,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:08:12,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 01:08:12,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 01:08:12,238 INFO L87 Difference]: Start difference. First operand 10276 states and 16431 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Received shutdown request... [2023-12-16 01:08:15,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-16 01:08:15,405 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-16 01:08:15,405 INFO L413 NwaCegarLoop]: 295 mSDtfsCounter, 1144 mSDsluCounter, 1070 mSDsCounter, 0 mSdLazyCounter, 2780 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1147 SdHoareTripleChecker+Valid, 1365 SdHoareTripleChecker+Invalid, 2824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 2780 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-16 01:08:15,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1147 Valid, 1365 Invalid, 2824 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 2780 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-16 01:08:15,407 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-12-16 01:08:15,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-16 01:08:15,408 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (10276states) and FLOYD_HOARE automaton (currently 15 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (21785 states constructed, input type IntersectNwa). [2023-12-16 01:08:15,409 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location error1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-12-16 01:08:15,412 INFO L445 BasicCegarLoop]: Path program 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] [2023-12-16 01:08:15,414 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 01:08:15,416 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 01:08:15 BoogieIcfgContainer [2023-12-16 01:08:15,416 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 01:08:15,416 INFO L158 Benchmark]: Toolchain (without parser) took 51507.10ms. Allocated memory was 187.7MB in the beginning and 944.8MB in the end (delta: 757.1MB). Free memory was 144.1MB in the beginning and 728.2MB in the end (delta: -584.0MB). Peak memory consumption was 561.2MB. Max. memory is 8.0GB. [2023-12-16 01:08:15,416 INFO L158 Benchmark]: CDTParser took 0.55ms. Allocated memory is still 187.7MB. Free memory is still 145.7MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 01:08:15,416 INFO L158 Benchmark]: CACSL2BoogieTranslator took 473.54ms. Allocated memory is still 187.7MB. Free memory was 143.8MB in the beginning and 117.8MB in the end (delta: 26.0MB). Peak memory consumption was 26.2MB. Max. memory is 8.0GB. [2023-12-16 01:08:15,417 INFO L158 Benchmark]: Boogie Procedure Inliner took 68.13ms. Allocated memory is still 187.7MB. Free memory was 117.8MB in the beginning and 113.0MB in the end (delta: 4.8MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2023-12-16 01:08:15,417 INFO L158 Benchmark]: Boogie Preprocessor took 94.18ms. Allocated memory is still 187.7MB. Free memory was 113.0MB in the beginning and 107.4MB in the end (delta: 5.6MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2023-12-16 01:08:15,417 INFO L158 Benchmark]: RCFGBuilder took 1129.48ms. Allocated memory is still 187.7MB. Free memory was 107.4MB in the beginning and 102.2MB in the end (delta: 5.2MB). Peak memory consumption was 10.6MB. Max. memory is 8.0GB. [2023-12-16 01:08:15,417 INFO L158 Benchmark]: TraceAbstraction took 49736.43ms. Allocated memory was 187.7MB in the beginning and 944.8MB in the end (delta: 757.1MB). Free memory was 101.2MB in the beginning and 728.2MB in the end (delta: -627.0MB). Peak memory consumption was 517.0MB. Max. memory is 8.0GB. [2023-12-16 01:08:15,419 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks [2023-12-16 01:08:15,423 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end Benchmark results are: * CDTParser took 0.55ms. Allocated memory is still 187.7MB. Free memory is still 145.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 473.54ms. Allocated memory is still 187.7MB. Free memory was 143.8MB in the beginning and 117.8MB in the end (delta: 26.0MB). Peak memory consumption was 26.2MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 68.13ms. Allocated memory is still 187.7MB. Free memory was 117.8MB in the beginning and 113.0MB in the end (delta: 4.8MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 94.18ms. Allocated memory is still 187.7MB. Free memory was 113.0MB in the beginning and 107.4MB in the end (delta: 5.6MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * RCFGBuilder took 1129.48ms. Allocated memory is still 187.7MB. Free memory was 107.4MB in the beginning and 102.2MB in the end (delta: 5.2MB). Peak memory consumption was 10.6MB. Max. memory is 8.0GB. * TraceAbstraction took 49736.43ms. Allocated memory was 187.7MB in the beginning and 944.8MB in the end (delta: 757.1MB). Free memory was 101.2MB in the beginning and 728.2MB in the end (delta: -627.0MB). Peak memory consumption was 517.0MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 390]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 390). Cancelled while NwaCegarLoop was constructing difference of abstraction (10276states) and FLOYD_HOARE automaton (currently 15 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (21785 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 27]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 27). Cancelled while NwaCegarLoop was constructing difference of abstraction (10276states) and FLOYD_HOARE automaton (currently 15 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (21785 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 388 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 49.7s, OverallIterations: 24, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 40.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 24439 SdHoareTripleChecker+Valid, 29.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 24032 mSDsluCounter, 26889 SdHoareTripleChecker+Invalid, 24.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 18715 mSDsCounter, 1481 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 38744 IncrementalHoareTripleChecker+Invalid, 40225 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1481 mSolverCounterUnsat, 8174 mSDtfsCounter, 38744 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 828 GetRequests, 600 SyntacticMatches, 0 SemanticMatches, 228 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 533 ImplicationChecksByTransitivity, 9.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10276occurred in iteration=23, InterpolantAutomatonStates: 212, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.5s AutomataMinimizationTime, 23 MinimizatonAttempts, 14806 StatesRemovedByMinimization, 22 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 4.5s InterpolantComputationTime, 2905 NumberOfCodeBlocks, 2905 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 2997 ConstructedInterpolants, 0 QuantifiedInterpolants, 7846 SizeOfPredicates, 2 NumberOfNonLiveVariables, 1174 ConjunctsInSsa, 18 ConjunctsInUnsatCore, 29 InterpolantComputations, 23 PerfectInterpolantSequences, 207/271 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown