/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.10.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 18:05:04,359 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 18:05:04,404 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 18:05:04,407 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 18:05:04,408 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 18:05:04,421 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 18:05:04,421 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 18:05:04,422 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 18:05:04,422 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 18:05:04,422 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 18:05:04,423 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 18:05:04,423 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 18:05:04,423 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 18:05:04,424 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 18:05:04,424 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 18:05:04,424 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 18:05:04,425 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 18:05:04,425 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 18:05:04,425 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 18:05:04,425 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 18:05:04,426 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 18:05:04,426 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 18:05:04,426 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 18:05:04,427 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 18:05:04,427 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 18:05:04,427 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 18:05:04,427 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 18:05:04,428 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 18:05:04,428 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 18:05:04,428 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 18:05:04,428 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 18:05:04,428 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 18:05:04,429 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 18:05:04,429 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 18:05:04,429 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 18:05:04,429 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 18:05:04,430 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 18:05:04,430 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 18:05:04,430 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 18:05:04,430 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 18:05:04,430 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 18:05:04,431 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 18:05:04,431 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 18:05:04,431 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 18:05:04,564 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 18:05:04,580 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 18:05:04,582 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 18:05:04,583 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 18:05:04,583 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 18:05:04,584 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.10.cil-1.c [2023-12-15 18:05:05,656 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 18:05:05,798 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 18:05:05,799 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.10.cil-1.c [2023-12-15 18:05:05,809 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4cc506e21/8d23dae7e7a440dfb07637e5b557fe10/FLAG5fecba1cf [2023-12-15 18:05:05,821 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4cc506e21/8d23dae7e7a440dfb07637e5b557fe10 [2023-12-15 18:05:05,823 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 18:05:05,824 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 18:05:05,824 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 18:05:05,824 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 18:05:05,828 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 18:05:05,828 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 06:05:05" (1/1) ... [2023-12-15 18:05:05,829 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27282d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:05:05, skipping insertion in model container [2023-12-15 18:05:05,829 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 06:05:05" (1/1) ... [2023-12-15 18:05:05,863 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 18:05:05,959 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.10.cil-1.c[913,926] [2023-12-15 18:05:05,987 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.10.cil-1.c[5977,5990] [2023-12-15 18:05:06,071 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 18:05:06,082 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 18:05:06,095 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.10.cil-1.c[913,926] [2023-12-15 18:05:06,109 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.10.cil-1.c[5977,5990] [2023-12-15 18:05:06,154 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 18:05:06,174 INFO L206 MainTranslator]: Completed translation [2023-12-15 18:05:06,174 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:05:06 WrapperNode [2023-12-15 18:05:06,174 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 18:05:06,175 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 18:05:06,175 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 18:05:06,175 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 18:05:06,185 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:05:06" (1/1) ... [2023-12-15 18:05:06,209 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:05:06" (1/1) ... [2023-12-15 18:05:06,239 INFO L138 Inliner]: procedures = 68, calls = 79, calls flagged for inlining = 42, calls inlined = 42, statements flattened = 969 [2023-12-15 18:05:06,239 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 18:05:06,240 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 18:05:06,240 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 18:05:06,240 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 18:05:06,248 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:05:06" (1/1) ... [2023-12-15 18:05:06,248 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:05:06" (1/1) ... [2023-12-15 18:05:06,251 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:05:06" (1/1) ... [2023-12-15 18:05:06,271 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-15 18:05:06,271 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:05:06" (1/1) ... [2023-12-15 18:05:06,271 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:05:06" (1/1) ... [2023-12-15 18:05:06,296 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:05:06" (1/1) ... [2023-12-15 18:05:06,311 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:05:06" (1/1) ... [2023-12-15 18:05:06,313 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:05:06" (1/1) ... [2023-12-15 18:05:06,315 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:05:06" (1/1) ... [2023-12-15 18:05:06,319 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 18:05:06,326 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 18:05:06,326 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 18:05:06,326 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 18:05:06,327 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:05:06" (1/1) ... [2023-12-15 18:05:06,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 18:05:06,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:05:06,367 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-15 18:05:06,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-15 18:05:06,415 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 18:05:06,416 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-15 18:05:06,416 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-15 18:05:06,417 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2023-12-15 18:05:06,417 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2023-12-15 18:05:06,418 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2023-12-15 18:05:06,418 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2023-12-15 18:05:06,418 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2023-12-15 18:05:06,418 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2023-12-15 18:05:06,418 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2023-12-15 18:05:06,418 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2023-12-15 18:05:06,419 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2023-12-15 18:05:06,419 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2023-12-15 18:05:06,419 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2023-12-15 18:05:06,419 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2023-12-15 18:05:06,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 18:05:06,419 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2023-12-15 18:05:06,419 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2023-12-15 18:05:06,419 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 18:05:06,419 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 18:05:06,420 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2023-12-15 18:05:06,420 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2023-12-15 18:05:06,420 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2023-12-15 18:05:06,420 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2023-12-15 18:05:06,558 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 18:05:06,562 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 18:05:07,370 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 18:05:07,437 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 18:05:07,437 INFO L309 CfgBuilder]: Removed 17 assume(true) statements. [2023-12-15 18:05:07,437 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 06:05:07 BoogieIcfgContainer [2023-12-15 18:05:07,437 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 18:05:07,440 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 18:05:07,440 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 18:05:07,442 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 18:05:07,442 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 06:05:05" (1/3) ... [2023-12-15 18:05:07,443 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6463f492 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 06:05:07, skipping insertion in model container [2023-12-15 18:05:07,443 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:05:06" (2/3) ... [2023-12-15 18:05:07,444 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6463f492 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 06:05:07, skipping insertion in model container [2023-12-15 18:05:07,444 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 06:05:07" (3/3) ... [2023-12-15 18:05:07,445 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-2+token_ring.10.cil-1.c [2023-12-15 18:05:07,458 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 18:05:07,458 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-15 18:05:07,514 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 18:05:07,520 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;@3b95ea65, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 18:05:07,520 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-15 18:05:07,528 INFO L276 IsEmpty]: Start isEmpty. Operand has 373 states, 328 states have (on average 1.7225609756097562) internal successors, (565), 335 states have internal predecessors, (565), 32 states have call successors, (32), 10 states have call predecessors, (32), 10 states have return successors, (32), 30 states have call predecessors, (32), 32 states have call successors, (32) [2023-12-15 18:05:07,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-15 18:05:07,537 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:05:07,538 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] [2023-12-15 18:05:07,538 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:05:07,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:05:07,544 INFO L85 PathProgramCache]: Analyzing trace with hash -2128058392, now seen corresponding path program 1 times [2023-12-15 18:05:07,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:05:07,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518915364] [2023-12-15 18:05:07,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:05:07,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:05:07,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:07,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-15 18:05:07,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:07,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 18:05:07,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:07,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:05:07,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:05:07,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518915364] [2023-12-15 18:05:07,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518915364] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:05:07,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:05:07,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 18:05:07,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626214410] [2023-12-15 18:05:07,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:05:07,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 18:05:07,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:05:07,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 18:05:07,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:05:07,779 INFO L87 Difference]: Start difference. First operand has 373 states, 328 states have (on average 1.7225609756097562) internal successors, (565), 335 states have internal predecessors, (565), 32 states have call successors, (32), 10 states have call predecessors, (32), 10 states have return successors, (32), 30 states have call predecessors, (32), 32 states have call successors, (32) Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-15 18:05:08,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:05:08,326 INFO L93 Difference]: Finished difference Result 734 states and 1234 transitions. [2023-12-15 18:05:08,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 18:05:08,328 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), 1 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 37 [2023-12-15 18:05:08,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:05:08,337 INFO L225 Difference]: With dead ends: 734 [2023-12-15 18:05:08,337 INFO L226 Difference]: Without dead ends: 375 [2023-12-15 18:05:08,341 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 [2023-12-15 18:05:08,343 INFO L413 NwaCegarLoop]: 337 mSDtfsCounter, 326 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 608 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 820 SdHoareTripleChecker+Invalid, 639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 18:05:08,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [329 Valid, 820 Invalid, 639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 608 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 18:05:08,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2023-12-15 18:05:08,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 367. [2023-12-15 18:05:08,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 325 states have (on average 1.6092307692307692) internal successors, (523), 329 states have internal predecessors, (523), 32 states have call successors, (32), 10 states have call predecessors, (32), 8 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2023-12-15 18:05:08,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 583 transitions. [2023-12-15 18:05:08,391 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 583 transitions. Word has length 37 [2023-12-15 18:05:08,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:05:08,392 INFO L495 AbstractCegarLoop]: Abstraction has 367 states and 583 transitions. [2023-12-15 18:05:08,392 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), 1 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-15 18:05:08,392 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 583 transitions. [2023-12-15 18:05:08,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-15 18:05:08,393 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:05:08,394 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] [2023-12-15 18:05:08,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-15 18:05:08,394 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:05:08,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:05:08,395 INFO L85 PathProgramCache]: Analyzing trace with hash -1284052890, now seen corresponding path program 1 times [2023-12-15 18:05:08,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:05:08,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295391821] [2023-12-15 18:05:08,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:05:08,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:05:08,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:08,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-15 18:05:08,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:08,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 18:05:08,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:08,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:05:08,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:05:08,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295391821] [2023-12-15 18:05:08,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295391821] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:05:08,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:05:08,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 18:05:08,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203022618] [2023-12-15 18:05:08,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:05:08,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 18:05:08,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:05:08,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 18:05:08,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:05:08,477 INFO L87 Difference]: Start difference. First operand 367 states and 583 transitions. 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) [2023-12-15 18:05:08,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:05:08,833 INFO L93 Difference]: Finished difference Result 484 states and 753 transitions. [2023-12-15 18:05:08,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 18:05:08,833 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 [2023-12-15 18:05:08,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:05:08,836 INFO L225 Difference]: With dead ends: 484 [2023-12-15 18:05:08,836 INFO L226 Difference]: Without dead ends: 428 [2023-12-15 18:05:08,836 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 [2023-12-15 18:05:08,837 INFO L413 NwaCegarLoop]: 331 mSDtfsCounter, 780 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 804 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 18:05:08,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [804 Valid, 641 Invalid, 433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 385 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 18:05:08,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2023-12-15 18:05:08,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 422. [2023-12-15 18:05:08,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 422 states, 373 states have (on average 1.581769436997319) internal successors, (590), 378 states have internal predecessors, (590), 36 states have call successors, (36), 12 states have call predecessors, (36), 11 states have return successors, (38), 32 states have call predecessors, (38), 32 states have call successors, (38) [2023-12-15 18:05:08,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 664 transitions. [2023-12-15 18:05:08,897 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 664 transitions. Word has length 37 [2023-12-15 18:05:08,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:05:08,897 INFO L495 AbstractCegarLoop]: Abstraction has 422 states and 664 transitions. [2023-12-15 18:05:08,897 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) [2023-12-15 18:05:08,897 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 664 transitions. [2023-12-15 18:05:08,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-15 18:05:08,898 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:05:08,898 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] [2023-12-15 18:05:08,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-15 18:05:08,899 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:05:08,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:05:08,899 INFO L85 PathProgramCache]: Analyzing trace with hash 1913421637, now seen corresponding path program 1 times [2023-12-15 18:05:08,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:05:08,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144762757] [2023-12-15 18:05:08,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:05:08,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:05:08,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:08,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-15 18:05:08,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:08,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-15 18:05:08,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:08,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:05:08,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:05:08,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144762757] [2023-12-15 18:05:08,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144762757] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:05:08,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:05:08,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 18:05:08,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045824405] [2023-12-15 18:05:08,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:05:08,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 18:05:08,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:05:08,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 18:05:08,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:05:08,942 INFO L87 Difference]: Start difference. First operand 422 states and 664 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) [2023-12-15 18:05:09,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:05:09,286 INFO L93 Difference]: Finished difference Result 656 states and 1008 transitions. [2023-12-15 18:05:09,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 18:05:09,286 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 [2023-12-15 18:05:09,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:05:09,289 INFO L225 Difference]: With dead ends: 656 [2023-12-15 18:05:09,289 INFO L226 Difference]: Without dead ends: 545 [2023-12-15 18:05:09,289 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 [2023-12-15 18:05:09,290 INFO L413 NwaCegarLoop]: 333 mSDtfsCounter, 797 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 821 SdHoareTripleChecker+Valid, 648 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 18:05:09,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [821 Valid, 648 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 18:05:09,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2023-12-15 18:05:09,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 522. [2023-12-15 18:05:09,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 522 states, 460 states have (on average 1.5391304347826087) internal successors, (708), 466 states have internal predecessors, (708), 44 states have call successors, (44), 16 states have call predecessors, (44), 16 states have return successors, (52), 40 states have call predecessors, (52), 40 states have call successors, (52) [2023-12-15 18:05:09,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 804 transitions. [2023-12-15 18:05:09,309 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 804 transitions. Word has length 38 [2023-12-15 18:05:09,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:05:09,309 INFO L495 AbstractCegarLoop]: Abstraction has 522 states and 804 transitions. [2023-12-15 18:05:09,309 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) [2023-12-15 18:05:09,309 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 804 transitions. [2023-12-15 18:05:09,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-12-15 18:05:09,311 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:05:09,311 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] [2023-12-15 18:05:09,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-15 18:05:09,311 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:05:09,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:05:09,311 INFO L85 PathProgramCache]: Analyzing trace with hash -252467639, now seen corresponding path program 1 times [2023-12-15 18:05:09,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:05:09,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656699670] [2023-12-15 18:05:09,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:05:09,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:05:09,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:09,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-15 18:05:09,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:09,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-15 18:05:09,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:09,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:05:09,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:05:09,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656699670] [2023-12-15 18:05:09,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656699670] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:05:09,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:05:09,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 18:05:09,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113997225] [2023-12-15 18:05:09,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:05:09,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 18:05:09,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:05:09,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 18:05:09,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:05:09,350 INFO L87 Difference]: Start difference. First operand 522 states and 804 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) [2023-12-15 18:05:09,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:05:09,796 INFO L93 Difference]: Finished difference Result 922 states and 1355 transitions. [2023-12-15 18:05:09,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 18:05:09,797 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 [2023-12-15 18:05:09,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:05:09,800 INFO L225 Difference]: With dead ends: 922 [2023-12-15 18:05:09,800 INFO L226 Difference]: Without dead ends: 711 [2023-12-15 18:05:09,800 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 [2023-12-15 18:05:09,801 INFO L413 NwaCegarLoop]: 366 mSDtfsCounter, 305 mSDsluCounter, 550 mSDsCounter, 0 mSdLazyCounter, 634 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 916 SdHoareTripleChecker+Invalid, 671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 18:05:09,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [307 Valid, 916 Invalid, 671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 634 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 18:05:09,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 711 states. [2023-12-15 18:05:09,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 711 to 607. [2023-12-15 18:05:09,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 607 states, 536 states have (on average 1.5167910447761195) internal successors, (813), 544 states have internal predecessors, (813), 48 states have call successors, (48), 21 states have call predecessors, (48), 21 states have return successors, (54), 42 states have call predecessors, (54), 44 states have call successors, (54) [2023-12-15 18:05:09,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 915 transitions. [2023-12-15 18:05:09,840 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 915 transitions. Word has length 39 [2023-12-15 18:05:09,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:05:09,841 INFO L495 AbstractCegarLoop]: Abstraction has 607 states and 915 transitions. [2023-12-15 18:05:09,841 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) [2023-12-15 18:05:09,841 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 915 transitions. [2023-12-15 18:05:09,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-15 18:05:09,845 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:05:09,845 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] [2023-12-15 18:05:09,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-15 18:05:09,846 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:05:09,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:05:09,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1206059197, now seen corresponding path program 1 times [2023-12-15 18:05:09,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:05:09,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291424159] [2023-12-15 18:05:09,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:05:09,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:05:09,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:09,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-15 18:05:09,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:09,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-15 18:05:09,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:09,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-15 18:05:09,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:10,007 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-15 18:05:10,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:05:10,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291424159] [2023-12-15 18:05:10,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291424159] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:05:10,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:05:10,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 18:05:10,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994216345] [2023-12-15 18:05:10,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:05:10,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 18:05:10,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:05:10,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 18:05:10,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:05:10,010 INFO L87 Difference]: Start difference. First operand 607 states and 915 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) [2023-12-15 18:05:10,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:05:10,418 INFO L93 Difference]: Finished difference Result 1084 states and 1572 transitions. [2023-12-15 18:05:10,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 18:05:10,418 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 [2023-12-15 18:05:10,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:05:10,421 INFO L225 Difference]: With dead ends: 1084 [2023-12-15 18:05:10,421 INFO L226 Difference]: Without dead ends: 788 [2023-12-15 18:05:10,422 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 [2023-12-15 18:05:10,422 INFO L413 NwaCegarLoop]: 385 mSDtfsCounter, 294 mSDsluCounter, 576 mSDsCounter, 0 mSdLazyCounter, 654 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 961 SdHoareTripleChecker+Invalid, 687 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 654 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 18:05:10,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [296 Valid, 961 Invalid, 687 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 654 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 18:05:10,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2023-12-15 18:05:10,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 754. [2023-12-15 18:05:10,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 754 states, 662 states have (on average 1.4637462235649548) internal successors, (969), 672 states have internal predecessors, (969), 60 states have call successors, (60), 28 states have call predecessors, (60), 30 states have return successors, (74), 54 states have call predecessors, (74), 56 states have call successors, (74) [2023-12-15 18:05:10,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 1103 transitions. [2023-12-15 18:05:10,445 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 1103 transitions. Word has length 54 [2023-12-15 18:05:10,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:05:10,446 INFO L495 AbstractCegarLoop]: Abstraction has 754 states and 1103 transitions. [2023-12-15 18:05:10,446 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) [2023-12-15 18:05:10,446 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 1103 transitions. [2023-12-15 18:05:10,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-15 18:05:10,447 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:05:10,447 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] [2023-12-15 18:05:10,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-15 18:05:10,447 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:05:10,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:05:10,448 INFO L85 PathProgramCache]: Analyzing trace with hash -2005994393, now seen corresponding path program 1 times [2023-12-15 18:05:10,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:05:10,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911423613] [2023-12-15 18:05:10,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:05:10,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:05:10,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:10,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-15 18:05:10,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:10,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-15 18:05:10,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:10,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 18:05:10,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:10,481 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-15 18:05:10,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:05:10,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911423613] [2023-12-15 18:05:10,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911423613] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:05:10,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:05:10,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 18:05:10,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745790965] [2023-12-15 18:05:10,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:05:10,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 18:05:10,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:05:10,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 18:05:10,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:05:10,482 INFO L87 Difference]: Start difference. First operand 754 states and 1103 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) [2023-12-15 18:05:10,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:05:10,763 INFO L93 Difference]: Finished difference Result 1312 states and 1854 transitions. [2023-12-15 18:05:10,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 18:05:10,763 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 [2023-12-15 18:05:10,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:05:10,767 INFO L225 Difference]: With dead ends: 1312 [2023-12-15 18:05:10,767 INFO L226 Difference]: Without dead ends: 910 [2023-12-15 18:05:10,767 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 [2023-12-15 18:05:10,771 INFO L413 NwaCegarLoop]: 339 mSDtfsCounter, 776 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 800 SdHoareTripleChecker+Valid, 660 SdHoareTripleChecker+Invalid, 399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 18:05:10,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [800 Valid, 660 Invalid, 399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 18:05:10,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 910 states. [2023-12-15 18:05:10,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 910 to 861. [2023-12-15 18:05:10,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 861 states, 756 states have (on average 1.4312169312169312) internal successors, (1082), 768 states have internal predecessors, (1082), 66 states have call successors, (66), 33 states have call predecessors, (66), 37 states have return successors, (84), 60 states have call predecessors, (84), 62 states have call successors, (84) [2023-12-15 18:05:10,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 861 states to 861 states and 1232 transitions. [2023-12-15 18:05:10,807 INFO L78 Accepts]: Start accepts. Automaton has 861 states and 1232 transitions. Word has length 59 [2023-12-15 18:05:10,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:05:10,807 INFO L495 AbstractCegarLoop]: Abstraction has 861 states and 1232 transitions. [2023-12-15 18:05:10,807 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) [2023-12-15 18:05:10,808 INFO L276 IsEmpty]: Start isEmpty. Operand 861 states and 1232 transitions. [2023-12-15 18:05:10,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-15 18:05:10,809 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:05:10,809 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] [2023-12-15 18:05:10,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-15 18:05:10,809 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:05:10,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:05:10,810 INFO L85 PathProgramCache]: Analyzing trace with hash -1062118076, now seen corresponding path program 1 times [2023-12-15 18:05:10,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:05:10,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047250353] [2023-12-15 18:05:10,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:05:10,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:05:10,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:10,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-15 18:05:10,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:10,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 18:05:10,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:10,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-15 18:05:10,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:10,898 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-15 18:05:10,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:05:10,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047250353] [2023-12-15 18:05:10,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047250353] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:05:10,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:05:10,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 18:05:10,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113064861] [2023-12-15 18:05:10,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:05:10,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 18:05:10,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:05:10,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 18:05:10,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 18:05:10,900 INFO L87 Difference]: Start difference. First operand 861 states and 1232 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) [2023-12-15 18:05:11,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:05:11,395 INFO L93 Difference]: Finished difference Result 1347 states and 1894 transitions. [2023-12-15 18:05:11,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 18:05:11,396 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 [2023-12-15 18:05:11,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:05:11,398 INFO L225 Difference]: With dead ends: 1347 [2023-12-15 18:05:11,398 INFO L226 Difference]: Without dead ends: 828 [2023-12-15 18:05:11,399 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 [2023-12-15 18:05:11,400 INFO L413 NwaCegarLoop]: 334 mSDtfsCounter, 246 mSDsluCounter, 856 mSDsCounter, 0 mSdLazyCounter, 911 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 1190 SdHoareTripleChecker+Invalid, 942 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 911 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 18:05:11,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [247 Valid, 1190 Invalid, 942 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 911 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 18:05:11,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828 states. [2023-12-15 18:05:11,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 828 to 755. [2023-12-15 18:05:11,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 755 states, 664 states have (on average 1.4397590361445782) internal successors, (956), 675 states have internal predecessors, (956), 58 states have call successors, (58), 28 states have call predecessors, (58), 31 states have return successors, (70), 52 states have call predecessors, (70), 54 states have call successors, (70) [2023-12-15 18:05:11,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 755 states to 755 states and 1084 transitions. [2023-12-15 18:05:11,419 INFO L78 Accepts]: Start accepts. Automaton has 755 states and 1084 transitions. Word has length 60 [2023-12-15 18:05:11,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:05:11,419 INFO L495 AbstractCegarLoop]: Abstraction has 755 states and 1084 transitions. [2023-12-15 18:05:11,419 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) [2023-12-15 18:05:11,419 INFO L276 IsEmpty]: Start isEmpty. Operand 755 states and 1084 transitions. [2023-12-15 18:05:11,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-15 18:05:11,420 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:05:11,420 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] [2023-12-15 18:05:11,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-15 18:05:11,421 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:05:11,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:05:11,421 INFO L85 PathProgramCache]: Analyzing trace with hash 735521540, now seen corresponding path program 1 times [2023-12-15 18:05:11,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:05:11,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116981309] [2023-12-15 18:05:11,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:05:11,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:05:11,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:11,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-15 18:05:11,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:11,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 18:05:11,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:11,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-15 18:05:11,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:11,475 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-15 18:05:11,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:05:11,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116981309] [2023-12-15 18:05:11,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116981309] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:05:11,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [941530286] [2023-12-15 18:05:11,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:05:11,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:05:11,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:05:11,478 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 18:05:11,504 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 18:05:11,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:11,612 INFO L262 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-15 18:05:11,618 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:05:11,690 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:05:11,690 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 18:05:11,756 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-15 18:05:11,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [941530286] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-15 18:05:11,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-15 18:05:11,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 7 [2023-12-15 18:05:11,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880676570] [2023-12-15 18:05:11,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:05:11,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 18:05:11,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:05:11,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 18:05:11,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:05:11,758 INFO L87 Difference]: Start difference. First operand 755 states and 1084 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) [2023-12-15 18:05:11,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:05:11,924 INFO L93 Difference]: Finished difference Result 804 states and 1145 transitions. [2023-12-15 18:05:11,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 18:05:11,925 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 [2023-12-15 18:05:11,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:05:11,928 INFO L225 Difference]: With dead ends: 804 [2023-12-15 18:05:11,928 INFO L226 Difference]: Without dead ends: 801 [2023-12-15 18:05:11,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-15 18:05:11,929 INFO L413 NwaCegarLoop]: 558 mSDtfsCounter, 1045 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1045 SdHoareTripleChecker+Valid, 613 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 18:05:11,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1045 Valid, 613 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 18:05:11,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 801 states. [2023-12-15 18:05:11,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 801 to 754. [2023-12-15 18:05:11,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 754 states, 664 states have (on average 1.4367469879518073) internal successors, (954), 674 states have internal predecessors, (954), 57 states have call successors, (57), 28 states have call predecessors, (57), 31 states have return successors, (70), 52 states have call predecessors, (70), 54 states have call successors, (70) [2023-12-15 18:05:11,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 1081 transitions. [2023-12-15 18:05:11,977 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 1081 transitions. Word has length 60 [2023-12-15 18:05:11,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:05:11,977 INFO L495 AbstractCegarLoop]: Abstraction has 754 states and 1081 transitions. [2023-12-15 18:05:11,977 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) [2023-12-15 18:05:11,977 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 1081 transitions. [2023-12-15 18:05:11,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-15 18:05:11,978 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:05:11,979 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] [2023-12-15 18:05:12,016 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-15 18:05:12,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:05:12,199 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:05:12,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:05:12,200 INFO L85 PathProgramCache]: Analyzing trace with hash 1325046538, now seen corresponding path program 1 times [2023-12-15 18:05:12,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:05:12,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744100416] [2023-12-15 18:05:12,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:05:12,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:05:12,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:12,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-15 18:05:12,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:12,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 18:05:12,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:12,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-15 18:05:12,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:12,304 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-15 18:05:12,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:05:12,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744100416] [2023-12-15 18:05:12,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744100416] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:05:12,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [544598996] [2023-12-15 18:05:12,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:05:12,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:05:12,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:05:12,306 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 18:05:12,322 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 18:05:12,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:12,413 INFO L262 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-15 18:05:12,414 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:05:12,598 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:05:12,599 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 18:05:12,644 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-15 18:05:12,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [544598996] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 18:05:12,645 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 18:05:12,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 10 [2023-12-15 18:05:12,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076391695] [2023-12-15 18:05:12,645 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 18:05:12,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-15 18:05:12,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:05:12,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-15 18:05:12,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-12-15 18:05:12,646 INFO L87 Difference]: Start difference. First operand 754 states and 1081 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) [2023-12-15 18:05:13,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:05:13,477 INFO L93 Difference]: Finished difference Result 1990 states and 2733 transitions. [2023-12-15 18:05:13,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-15 18:05:13,478 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 [2023-12-15 18:05:13,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:05:13,483 INFO L225 Difference]: With dead ends: 1990 [2023-12-15 18:05:13,483 INFO L226 Difference]: Without dead ends: 1592 [2023-12-15 18:05:13,486 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 [2023-12-15 18:05:13,487 INFO L413 NwaCegarLoop]: 399 mSDtfsCounter, 1002 mSDsluCounter, 1869 mSDsCounter, 0 mSdLazyCounter, 1769 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1033 SdHoareTripleChecker+Valid, 2268 SdHoareTripleChecker+Invalid, 1815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1769 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 18:05:13,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1033 Valid, 2268 Invalid, 1815 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1769 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 18:05:13,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1592 states. [2023-12-15 18:05:13,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1592 to 1083. [2023-12-15 18:05:13,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1083 states, 956 states have (on average 1.389121338912134) internal successors, (1328), 973 states have internal predecessors, (1328), 76 states have call successors, (76), 41 states have call predecessors, (76), 49 states have return successors, (101), 69 states have call predecessors, (101), 73 states have call successors, (101) [2023-12-15 18:05:13,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1083 states to 1083 states and 1505 transitions. [2023-12-15 18:05:13,525 INFO L78 Accepts]: Start accepts. Automaton has 1083 states and 1505 transitions. Word has length 61 [2023-12-15 18:05:13,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:05:13,525 INFO L495 AbstractCegarLoop]: Abstraction has 1083 states and 1505 transitions. [2023-12-15 18:05:13,525 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) [2023-12-15 18:05:13,526 INFO L276 IsEmpty]: Start isEmpty. Operand 1083 states and 1505 transitions. [2023-12-15 18:05:13,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-15 18:05:13,527 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:05:13,527 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] [2023-12-15 18:05:13,547 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-15 18:05:13,732 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,SelfDestructingSolverStorable8 [2023-12-15 18:05:13,732 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:05:13,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:05:13,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1814252762, now seen corresponding path program 1 times [2023-12-15 18:05:13,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:05:13,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624354127] [2023-12-15 18:05:13,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:05:13,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:05:13,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:13,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-15 18:05:13,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:13,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 18:05:13,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:13,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-15 18:05:13,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:13,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-15 18:05:13,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:13,770 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-15 18:05:13,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:05:13,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624354127] [2023-12-15 18:05:13,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624354127] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:05:13,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:05:13,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 18:05:13,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55819458] [2023-12-15 18:05:13,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:05:13,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 18:05:13,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:05:13,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 18:05:13,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:05:13,771 INFO L87 Difference]: Start difference. First operand 1083 states and 1505 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) [2023-12-15 18:05:14,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:05:14,076 INFO L93 Difference]: Finished difference Result 1717 states and 2328 transitions. [2023-12-15 18:05:14,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 18:05:14,076 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 [2023-12-15 18:05:14,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:05:14,080 INFO L225 Difference]: With dead ends: 1717 [2023-12-15 18:05:14,080 INFO L226 Difference]: Without dead ends: 1052 [2023-12-15 18:05:14,081 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 [2023-12-15 18:05:14,082 INFO L413 NwaCegarLoop]: 345 mSDtfsCounter, 799 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 824 SdHoareTripleChecker+Valid, 674 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 18:05:14,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [824 Valid, 674 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 361 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 18:05:14,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1052 states. [2023-12-15 18:05:14,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1052 to 975. [2023-12-15 18:05:14,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 975 states, 861 states have (on average 1.3937282229965158) internal successors, (1200), 878 states have internal predecessors, (1200), 69 states have call successors, (69), 36 states have call predecessors, (69), 43 states have return successors, (90), 61 states have call predecessors, (90), 66 states have call successors, (90) [2023-12-15 18:05:14,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 975 states to 975 states and 1359 transitions. [2023-12-15 18:05:14,113 INFO L78 Accepts]: Start accepts. Automaton has 975 states and 1359 transitions. Word has length 78 [2023-12-15 18:05:14,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:05:14,113 INFO L495 AbstractCegarLoop]: Abstraction has 975 states and 1359 transitions. [2023-12-15 18:05:14,113 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) [2023-12-15 18:05:14,113 INFO L276 IsEmpty]: Start isEmpty. Operand 975 states and 1359 transitions. [2023-12-15 18:05:14,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-15 18:05:14,118 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:05:14,118 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] [2023-12-15 18:05:14,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-15 18:05:14,118 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:05:14,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:05:14,119 INFO L85 PathProgramCache]: Analyzing trace with hash 2059529315, now seen corresponding path program 1 times [2023-12-15 18:05:14,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:05:14,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273559605] [2023-12-15 18:05:14,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:05:14,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:05:14,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:14,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-15 18:05:14,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:14,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 18:05:14,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:14,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-12-15 18:05:14,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:14,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-15 18:05:14,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:14,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-15 18:05:14,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:14,185 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 16 proven. 20 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-15 18:05:14,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:05:14,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273559605] [2023-12-15 18:05:14,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273559605] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:05:14,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [895619925] [2023-12-15 18:05:14,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:05:14,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:05:14,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:05:14,202 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 18:05:14,228 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-15 18:05:14,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:14,300 INFO L262 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 18:05:14,302 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:05:14,314 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-15 18:05:14,314 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 18:05:14,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [895619925] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:05:14,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 18:05:14,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-12-15 18:05:14,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496292601] [2023-12-15 18:05:14,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:05:14,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:05:14,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:05:14,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:05:14,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-15 18:05:14,315 INFO L87 Difference]: Start difference. First operand 975 states and 1359 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) [2023-12-15 18:05:14,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:05:14,379 INFO L93 Difference]: Finished difference Result 1200 states and 1647 transitions. [2023-12-15 18:05:14,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:05:14,379 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 [2023-12-15 18:05:14,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:05:14,381 INFO L225 Difference]: With dead ends: 1200 [2023-12-15 18:05:14,381 INFO L226 Difference]: Without dead ends: 308 [2023-12-15 18:05:14,382 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 [2023-12-15 18:05:14,383 INFO L413 NwaCegarLoop]: 569 mSDtfsCounter, 53 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 1085 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:05:14,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 1085 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:05:14,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2023-12-15 18:05:14,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 308. [2023-12-15 18:05:14,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 275 states have (on average 1.6327272727272728) internal successors, (449), 277 states have internal predecessors, (449), 26 states have call successors, (26), 7 states have call predecessors, (26), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-12-15 18:05:14,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 499 transitions. [2023-12-15 18:05:14,392 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 499 transitions. Word has length 92 [2023-12-15 18:05:14,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:05:14,393 INFO L495 AbstractCegarLoop]: Abstraction has 308 states and 499 transitions. [2023-12-15 18:05:14,393 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) [2023-12-15 18:05:14,393 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 499 transitions. [2023-12-15 18:05:14,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-15 18:05:14,394 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:05:14,394 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] [2023-12-15 18:05:14,403 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-15 18:05:14,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:05:14,600 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:05:14,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:05:14,601 INFO L85 PathProgramCache]: Analyzing trace with hash 423959296, now seen corresponding path program 1 times [2023-12-15 18:05:14,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:05:14,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867636168] [2023-12-15 18:05:14,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:05:14,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:05:14,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:14,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:05:14,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:14,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-15 18:05:14,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:14,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-15 18:05:14,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:14,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-15 18:05:14,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:14,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-15 18:05:14,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:14,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:05:14,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:05:14,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867636168] [2023-12-15 18:05:14,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867636168] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:05:14,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:05:14,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 18:05:14,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547872736] [2023-12-15 18:05:14,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:05:14,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 18:05:14,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:05:14,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 18:05:14,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 18:05:14,716 INFO L87 Difference]: Start difference. First operand 308 states and 499 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 3 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:05:15,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:05:15,843 INFO L93 Difference]: Finished difference Result 720 states and 1186 transitions. [2023-12-15 18:05:15,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 18:05:15,844 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 3 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 142 [2023-12-15 18:05:15,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:05:15,846 INFO L225 Difference]: With dead ends: 720 [2023-12-15 18:05:15,846 INFO L226 Difference]: Without dead ends: 418 [2023-12-15 18:05:15,847 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-15 18:05:15,847 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 848 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 905 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 870 SdHoareTripleChecker+Valid, 569 SdHoareTripleChecker+Invalid, 961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 905 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-15 18:05:15,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [870 Valid, 569 Invalid, 961 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 905 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-15 18:05:15,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2023-12-15 18:05:15,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 308. [2023-12-15 18:05:15,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 275 states have (on average 1.6290909090909091) internal successors, (448), 277 states have internal predecessors, (448), 26 states have call successors, (26), 7 states have call predecessors, (26), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-12-15 18:05:15,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 498 transitions. [2023-12-15 18:05:15,862 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 498 transitions. Word has length 142 [2023-12-15 18:05:15,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:05:15,862 INFO L495 AbstractCegarLoop]: Abstraction has 308 states and 498 transitions. [2023-12-15 18:05:15,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 3 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:05:15,863 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 498 transitions. [2023-12-15 18:05:15,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-15 18:05:15,863 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:05:15,864 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] [2023-12-15 18:05:15,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-15 18:05:15,864 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:05:15,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:05:15,864 INFO L85 PathProgramCache]: Analyzing trace with hash -974994306, now seen corresponding path program 1 times [2023-12-15 18:05:15,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:05:15,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185960869] [2023-12-15 18:05:15,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:05:15,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:05:15,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:15,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:05:15,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:15,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-15 18:05:15,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:15,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-15 18:05:15,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:15,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-15 18:05:15,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:15,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-15 18:05:15,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:15,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:05:15,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:05:15,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185960869] [2023-12-15 18:05:15,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185960869] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:05:15,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:05:15,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 18:05:15,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804527070] [2023-12-15 18:05:15,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:05:15,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 18:05:15,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:05:15,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 18:05:15,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 18:05:15,996 INFO L87 Difference]: Start difference. First operand 308 states and 498 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 3 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:05:17,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:05:17,113 INFO L93 Difference]: Finished difference Result 712 states and 1169 transitions. [2023-12-15 18:05:17,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 18:05:17,114 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 3 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 142 [2023-12-15 18:05:17,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:05:17,116 INFO L225 Difference]: With dead ends: 712 [2023-12-15 18:05:17,116 INFO L226 Difference]: Without dead ends: 418 [2023-12-15 18:05:17,116 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-15 18:05:17,117 INFO L413 NwaCegarLoop]: 269 mSDtfsCounter, 839 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 904 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 861 SdHoareTripleChecker+Valid, 567 SdHoareTripleChecker+Invalid, 960 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 904 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-15 18:05:17,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [861 Valid, 567 Invalid, 960 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 904 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-15 18:05:17,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2023-12-15 18:05:17,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 308. [2023-12-15 18:05:17,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 275 states have (on average 1.6254545454545455) internal successors, (447), 277 states have internal predecessors, (447), 26 states have call successors, (26), 7 states have call predecessors, (26), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-12-15 18:05:17,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 497 transitions. [2023-12-15 18:05:17,129 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 497 transitions. Word has length 142 [2023-12-15 18:05:17,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:05:17,130 INFO L495 AbstractCegarLoop]: Abstraction has 308 states and 497 transitions. [2023-12-15 18:05:17,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 3 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:05:17,130 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 497 transitions. [2023-12-15 18:05:17,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-15 18:05:17,131 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:05:17,131 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] [2023-12-15 18:05:17,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-15 18:05:17,131 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:05:17,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:05:17,132 INFO L85 PathProgramCache]: Analyzing trace with hash -540488708, now seen corresponding path program 1 times [2023-12-15 18:05:17,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:05:17,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146835488] [2023-12-15 18:05:17,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:05:17,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:05:17,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:17,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:05:17,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:17,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-15 18:05:17,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:17,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-15 18:05:17,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:17,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-15 18:05:17,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:17,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-15 18:05:17,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:17,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:05:17,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:05:17,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146835488] [2023-12-15 18:05:17,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146835488] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:05:17,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:05:17,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 18:05:17,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906741818] [2023-12-15 18:05:17,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:05:17,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 18:05:17,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:05:17,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 18:05:17,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-15 18:05:17,346 INFO L87 Difference]: Start difference. First operand 308 states and 497 transitions. Second operand has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:05:19,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:05:19,168 INFO L93 Difference]: Finished difference Result 1125 states and 1859 transitions. [2023-12-15 18:05:19,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-15 18:05:19,168 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 142 [2023-12-15 18:05:19,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:05:19,171 INFO L225 Difference]: With dead ends: 1125 [2023-12-15 18:05:19,171 INFO L226 Difference]: Without dead ends: 834 [2023-12-15 18:05:19,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-12-15 18:05:19,172 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 1274 mSDsluCounter, 716 mSDsCounter, 0 mSdLazyCounter, 1964 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1291 SdHoareTripleChecker+Valid, 957 SdHoareTripleChecker+Invalid, 2072 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 1964 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-15 18:05:19,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1291 Valid, 957 Invalid, 2072 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 1964 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-15 18:05:19,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 834 states. [2023-12-15 18:05:19,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 834 to 613. [2023-12-15 18:05:19,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 613 states, 554 states have (on average 1.6371841155234657) internal successors, (907), 557 states have internal predecessors, (907), 45 states have call successors, (45), 13 states have call predecessors, (45), 13 states have return successors, (46), 43 states have call predecessors, (46), 43 states have call successors, (46) [2023-12-15 18:05:19,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 998 transitions. [2023-12-15 18:05:19,194 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 998 transitions. Word has length 142 [2023-12-15 18:05:19,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:05:19,194 INFO L495 AbstractCegarLoop]: Abstraction has 613 states and 998 transitions. [2023-12-15 18:05:19,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:05:19,194 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 998 transitions. [2023-12-15 18:05:19,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-15 18:05:19,195 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:05:19,195 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] [2023-12-15 18:05:19,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-15 18:05:19,195 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:05:19,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:05:19,196 INFO L85 PathProgramCache]: Analyzing trace with hash -1050462404, now seen corresponding path program 1 times [2023-12-15 18:05:19,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:05:19,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336191180] [2023-12-15 18:05:19,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:05:19,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:05:19,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:19,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:05:19,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:19,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-15 18:05:19,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:19,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-15 18:05:19,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:19,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-15 18:05:19,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:19,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-15 18:05:19,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:19,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:05:19,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:05:19,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336191180] [2023-12-15 18:05:19,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336191180] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:05:19,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:05:19,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:05:19,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367853131] [2023-12-15 18:05:19,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:05:19,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:05:19,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:05:19,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:05:19,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:05:19,458 INFO L87 Difference]: Start difference. First operand 613 states and 998 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:05:22,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:05:22,165 INFO L93 Difference]: Finished difference Result 1860 states and 3077 transitions. [2023-12-15 18:05:22,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 18:05:22,167 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 142 [2023-12-15 18:05:22,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:05:22,171 INFO L225 Difference]: With dead ends: 1860 [2023-12-15 18:05:22,171 INFO L226 Difference]: Without dead ends: 1264 [2023-12-15 18:05:22,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-15 18:05:22,173 INFO L413 NwaCegarLoop]: 424 mSDtfsCounter, 1309 mSDsluCounter, 1403 mSDsCounter, 0 mSdLazyCounter, 3196 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1326 SdHoareTripleChecker+Valid, 1827 SdHoareTripleChecker+Invalid, 3257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 3196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-15 18:05:22,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1326 Valid, 1827 Invalid, 3257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 3196 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-15 18:05:22,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1264 states. [2023-12-15 18:05:22,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1264 to 895. [2023-12-15 18:05:22,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 895 states, 810 states have (on average 1.6308641975308642) internal successors, (1321), 814 states have internal predecessors, (1321), 64 states have call successors, (64), 19 states have call predecessors, (64), 20 states have return successors, (67), 63 states have call predecessors, (67), 62 states have call successors, (67) [2023-12-15 18:05:22,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 895 states to 895 states and 1452 transitions. [2023-12-15 18:05:22,207 INFO L78 Accepts]: Start accepts. Automaton has 895 states and 1452 transitions. Word has length 142 [2023-12-15 18:05:22,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:05:22,207 INFO L495 AbstractCegarLoop]: Abstraction has 895 states and 1452 transitions. [2023-12-15 18:05:22,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:05:22,207 INFO L276 IsEmpty]: Start isEmpty. Operand 895 states and 1452 transitions. [2023-12-15 18:05:22,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-15 18:05:22,208 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:05:22,208 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] [2023-12-15 18:05:22,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-15 18:05:22,208 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:05:22,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:05:22,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1194095994, now seen corresponding path program 1 times [2023-12-15 18:05:22,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:05:22,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223972423] [2023-12-15 18:05:22,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:05:22,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:05:22,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:22,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:05:22,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:22,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-15 18:05:22,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:22,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-15 18:05:22,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:22,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-15 18:05:22,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:22,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-15 18:05:22,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:22,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:05:22,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:05:22,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223972423] [2023-12-15 18:05:22,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223972423] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:05:22,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:05:22,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:05:22,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922743172] [2023-12-15 18:05:22,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:05:22,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:05:22,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:05:22,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:05:22,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:05:22,360 INFO L87 Difference]: Start difference. First operand 895 states and 1452 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:05:23,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:05:23,744 INFO L93 Difference]: Finished difference Result 2154 states and 3563 transitions. [2023-12-15 18:05:23,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 18:05:23,745 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 142 [2023-12-15 18:05:23,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:05:23,750 INFO L225 Difference]: With dead ends: 2154 [2023-12-15 18:05:23,750 INFO L226 Difference]: Without dead ends: 1276 [2023-12-15 18:05:23,752 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-15 18:05:23,752 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 1012 mSDsluCounter, 701 mSDsCounter, 0 mSdLazyCounter, 1513 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1030 SdHoareTripleChecker+Valid, 928 SdHoareTripleChecker+Invalid, 1579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-15 18:05:23,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1030 Valid, 928 Invalid, 1579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 1513 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-15 18:05:23,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1276 states. [2023-12-15 18:05:23,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1276 to 895. [2023-12-15 18:05:23,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 895 states, 810 states have (on average 1.6271604938271604) internal successors, (1318), 814 states have internal predecessors, (1318), 64 states have call successors, (64), 19 states have call predecessors, (64), 20 states have return successors, (67), 63 states have call predecessors, (67), 62 states have call successors, (67) [2023-12-15 18:05:23,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 895 states to 895 states and 1449 transitions. [2023-12-15 18:05:23,792 INFO L78 Accepts]: Start accepts. Automaton has 895 states and 1449 transitions. Word has length 142 [2023-12-15 18:05:23,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:05:23,793 INFO L495 AbstractCegarLoop]: Abstraction has 895 states and 1449 transitions. [2023-12-15 18:05:23,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:05:23,793 INFO L276 IsEmpty]: Start isEmpty. Operand 895 states and 1449 transitions. [2023-12-15 18:05:23,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-15 18:05:23,794 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:05:23,794 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] [2023-12-15 18:05:23,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-15 18:05:23,794 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:05:23,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:05:23,794 INFO L85 PathProgramCache]: Analyzing trace with hash 101460792, now seen corresponding path program 1 times [2023-12-15 18:05:23,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:05:23,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663552622] [2023-12-15 18:05:23,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:05:23,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:05:23,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:23,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:05:23,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:23,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-15 18:05:23,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:23,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-15 18:05:23,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:23,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-15 18:05:23,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:23,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-15 18:05:23,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:23,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:05:23,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:05:23,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663552622] [2023-12-15 18:05:23,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663552622] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:05:23,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:05:23,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:05:23,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851806478] [2023-12-15 18:05:23,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:05:23,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:05:23,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:05:23,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:05:23,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:05:23,981 INFO L87 Difference]: Start difference. First operand 895 states and 1449 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:05:25,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:05:25,149 INFO L93 Difference]: Finished difference Result 2150 states and 3546 transitions. [2023-12-15 18:05:25,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 18:05:25,159 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 142 [2023-12-15 18:05:25,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:05:25,163 INFO L225 Difference]: With dead ends: 2150 [2023-12-15 18:05:25,163 INFO L226 Difference]: Without dead ends: 1272 [2023-12-15 18:05:25,165 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 [2023-12-15 18:05:25,165 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 1067 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 1453 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1085 SdHoareTripleChecker+Valid, 780 SdHoareTripleChecker+Invalid, 1544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-15 18:05:25,166 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1085 Valid, 780 Invalid, 1544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1453 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-15 18:05:25,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1272 states. [2023-12-15 18:05:25,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1272 to 895. [2023-12-15 18:05:25,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 895 states, 810 states have (on average 1.623456790123457) internal successors, (1315), 814 states have internal predecessors, (1315), 64 states have call successors, (64), 19 states have call predecessors, (64), 20 states have return successors, (67), 63 states have call predecessors, (67), 62 states have call successors, (67) [2023-12-15 18:05:25,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 895 states to 895 states and 1446 transitions. [2023-12-15 18:05:25,201 INFO L78 Accepts]: Start accepts. Automaton has 895 states and 1446 transitions. Word has length 142 [2023-12-15 18:05:25,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:05:25,202 INFO L495 AbstractCegarLoop]: Abstraction has 895 states and 1446 transitions. [2023-12-15 18:05:25,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:05:25,202 INFO L276 IsEmpty]: Start isEmpty. Operand 895 states and 1446 transitions. [2023-12-15 18:05:25,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-15 18:05:25,203 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:05:25,203 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] [2023-12-15 18:05:25,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-15 18:05:25,203 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:05:25,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:05:25,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1180711494, now seen corresponding path program 1 times [2023-12-15 18:05:25,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:05:25,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027269886] [2023-12-15 18:05:25,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:05:25,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:05:25,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:25,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:05:25,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:25,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-15 18:05:25,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:25,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-15 18:05:25,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:25,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-15 18:05:25,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:25,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-15 18:05:25,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:25,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:05:25,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:05:25,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027269886] [2023-12-15 18:05:25,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027269886] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:05:25,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:05:25,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:05:25,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615203563] [2023-12-15 18:05:25,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:05:25,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:05:25,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:05:25,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:05:25,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:05:25,373 INFO L87 Difference]: Start difference. First operand 895 states and 1446 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:05:26,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:05:26,515 INFO L93 Difference]: Finished difference Result 2146 states and 3529 transitions. [2023-12-15 18:05:26,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 18:05:26,515 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 142 [2023-12-15 18:05:26,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:05:26,519 INFO L225 Difference]: With dead ends: 2146 [2023-12-15 18:05:26,519 INFO L226 Difference]: Without dead ends: 1268 [2023-12-15 18:05:26,520 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-15 18:05:26,520 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 934 mSDsluCounter, 701 mSDsCounter, 0 mSdLazyCounter, 1596 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 952 SdHoareTripleChecker+Valid, 929 SdHoareTripleChecker+Invalid, 1661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-15 18:05:26,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [952 Valid, 929 Invalid, 1661 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1596 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-15 18:05:26,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1268 states. [2023-12-15 18:05:26,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1268 to 895. [2023-12-15 18:05:26,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 895 states, 810 states have (on average 1.6197530864197531) internal successors, (1312), 814 states have internal predecessors, (1312), 64 states have call successors, (64), 19 states have call predecessors, (64), 20 states have return successors, (67), 63 states have call predecessors, (67), 62 states have call successors, (67) [2023-12-15 18:05:26,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 895 states to 895 states and 1443 transitions. [2023-12-15 18:05:26,554 INFO L78 Accepts]: Start accepts. Automaton has 895 states and 1443 transitions. Word has length 142 [2023-12-15 18:05:26,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:05:26,554 INFO L495 AbstractCegarLoop]: Abstraction has 895 states and 1443 transitions. [2023-12-15 18:05:26,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:05:26,554 INFO L276 IsEmpty]: Start isEmpty. Operand 895 states and 1443 transitions. [2023-12-15 18:05:26,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-15 18:05:26,556 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:05:26,556 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] [2023-12-15 18:05:26,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-15 18:05:26,556 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:05:26,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:05:26,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1271780088, now seen corresponding path program 1 times [2023-12-15 18:05:26,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:05:26,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104747702] [2023-12-15 18:05:26,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:05:26,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:05:26,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:26,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:05:26,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:26,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-15 18:05:26,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:26,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-15 18:05:26,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:26,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-15 18:05:26,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:26,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-15 18:05:26,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:26,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:05:26,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:05:26,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104747702] [2023-12-15 18:05:26,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104747702] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:05:26,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:05:26,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:05:26,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633639879] [2023-12-15 18:05:26,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:05:26,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:05:26,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:05:26,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:05:26,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:05:26,724 INFO L87 Difference]: Start difference. First operand 895 states and 1443 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:05:29,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:05:29,105 INFO L93 Difference]: Finished difference Result 2924 states and 4785 transitions. [2023-12-15 18:05:29,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 18:05:29,106 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 142 [2023-12-15 18:05:29,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:05:29,111 INFO L225 Difference]: With dead ends: 2924 [2023-12-15 18:05:29,112 INFO L226 Difference]: Without dead ends: 2046 [2023-12-15 18:05:29,114 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-15 18:05:29,115 INFO L413 NwaCegarLoop]: 422 mSDtfsCounter, 1282 mSDsluCounter, 1403 mSDsCounter, 0 mSdLazyCounter, 3100 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1299 SdHoareTripleChecker+Valid, 1825 SdHoareTripleChecker+Invalid, 3163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 3100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-15 18:05:29,116 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1299 Valid, 1825 Invalid, 3163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 3100 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-15 18:05:29,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2046 states. [2023-12-15 18:05:29,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2046 to 1472. [2023-12-15 18:05:29,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1472 states, 1335 states have (on average 1.6127340823970038) internal successors, (2153), 1341 states have internal predecessors, (2153), 102 states have call successors, (102), 31 states have call predecessors, (102), 34 states have return successors, (113), 103 states have call predecessors, (113), 100 states have call successors, (113) [2023-12-15 18:05:29,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1472 states to 1472 states and 2368 transitions. [2023-12-15 18:05:29,193 INFO L78 Accepts]: Start accepts. Automaton has 1472 states and 2368 transitions. Word has length 142 [2023-12-15 18:05:29,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:05:29,193 INFO L495 AbstractCegarLoop]: Abstraction has 1472 states and 2368 transitions. [2023-12-15 18:05:29,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:05:29,194 INFO L276 IsEmpty]: Start isEmpty. Operand 1472 states and 2368 transitions. [2023-12-15 18:05:29,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-15 18:05:29,195 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:05:29,195 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] [2023-12-15 18:05:29,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-15 18:05:29,195 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:05:29,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:05:29,195 INFO L85 PathProgramCache]: Analyzing trace with hash -450222598, now seen corresponding path program 1 times [2023-12-15 18:05:29,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:05:29,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994747013] [2023-12-15 18:05:29,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:05:29,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:05:29,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:29,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:05:29,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:29,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-15 18:05:29,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:29,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-15 18:05:29,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:29,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-15 18:05:29,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:29,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-15 18:05:29,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:29,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:05:29,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:05:29,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994747013] [2023-12-15 18:05:29,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994747013] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:05:29,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:05:29,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:05:29,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39498403] [2023-12-15 18:05:29,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:05:29,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:05:29,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:05:29,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:05:29,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:05:29,350 INFO L87 Difference]: Start difference. First operand 1472 states and 2368 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:05:30,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:05:30,432 INFO L93 Difference]: Finished difference Result 3486 states and 5696 transitions. [2023-12-15 18:05:30,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 18:05:30,433 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 142 [2023-12-15 18:05:30,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:05:30,439 INFO L225 Difference]: With dead ends: 3486 [2023-12-15 18:05:30,439 INFO L226 Difference]: Without dead ends: 2031 [2023-12-15 18:05:30,443 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 [2023-12-15 18:05:30,443 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 1064 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 1417 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1082 SdHoareTripleChecker+Valid, 780 SdHoareTripleChecker+Invalid, 1508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-15 18:05:30,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1082 Valid, 780 Invalid, 1508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1417 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-15 18:05:30,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2031 states. [2023-12-15 18:05:30,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2031 to 1472. [2023-12-15 18:05:30,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1472 states, 1335 states have (on average 1.6089887640449438) internal successors, (2148), 1341 states have internal predecessors, (2148), 102 states have call successors, (102), 31 states have call predecessors, (102), 34 states have return successors, (113), 103 states have call predecessors, (113), 100 states have call successors, (113) [2023-12-15 18:05:30,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1472 states to 1472 states and 2363 transitions. [2023-12-15 18:05:30,509 INFO L78 Accepts]: Start accepts. Automaton has 1472 states and 2363 transitions. Word has length 142 [2023-12-15 18:05:30,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:05:30,509 INFO L495 AbstractCegarLoop]: Abstraction has 1472 states and 2363 transitions. [2023-12-15 18:05:30,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:05:30,509 INFO L276 IsEmpty]: Start isEmpty. Operand 1472 states and 2363 transitions. [2023-12-15 18:05:30,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-15 18:05:30,511 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:05:30,511 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] [2023-12-15 18:05:30,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-15 18:05:30,511 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:05:30,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:05:30,511 INFO L85 PathProgramCache]: Analyzing trace with hash -782865736, now seen corresponding path program 1 times [2023-12-15 18:05:30,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:05:30,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589091922] [2023-12-15 18:05:30,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:05:30,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:05:30,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:30,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:05:30,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:30,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-15 18:05:30,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:30,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-15 18:05:30,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:30,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-15 18:05:30,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:30,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-15 18:05:30,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:30,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:05:30,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:05:30,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589091922] [2023-12-15 18:05:30,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589091922] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:05:30,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:05:30,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:05:30,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816921775] [2023-12-15 18:05:30,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:05:30,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:05:30,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:05:30,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:05:30,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:05:30,680 INFO L87 Difference]: Start difference. First operand 1472 states and 2363 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:05:33,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:05:33,450 INFO L93 Difference]: Finished difference Result 4991 states and 8114 transitions. [2023-12-15 18:05:33,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 18:05:33,450 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 142 [2023-12-15 18:05:33,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:05:33,461 INFO L225 Difference]: With dead ends: 4991 [2023-12-15 18:05:33,462 INFO L226 Difference]: Without dead ends: 3536 [2023-12-15 18:05:33,464 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-15 18:05:33,465 INFO L413 NwaCegarLoop]: 422 mSDtfsCounter, 1274 mSDsluCounter, 1403 mSDsCounter, 0 mSdLazyCounter, 3062 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1291 SdHoareTripleChecker+Valid, 1825 SdHoareTripleChecker+Invalid, 3125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 3062 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:05:33,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1291 Valid, 1825 Invalid, 3125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 3062 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-15 18:05:33,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3536 states. [2023-12-15 18:05:33,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3536 to 2626. [2023-12-15 18:05:33,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2626 states, 2385 states have (on average 1.60167714884696) internal successors, (3820), 2395 states have internal predecessors, (3820), 178 states have call successors, (178), 55 states have call predecessors, (178), 62 states have return successors, (211), 183 states have call predecessors, (211), 176 states have call successors, (211) [2023-12-15 18:05:33,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2626 states to 2626 states and 4209 transitions. [2023-12-15 18:05:33,563 INFO L78 Accepts]: Start accepts. Automaton has 2626 states and 4209 transitions. Word has length 142 [2023-12-15 18:05:33,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:05:33,563 INFO L495 AbstractCegarLoop]: Abstraction has 2626 states and 4209 transitions. [2023-12-15 18:05:33,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:05:33,563 INFO L276 IsEmpty]: Start isEmpty. Operand 2626 states and 4209 transitions. [2023-12-15 18:05:33,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-15 18:05:33,565 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:05:33,565 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] [2023-12-15 18:05:33,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-15 18:05:33,565 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:05:33,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:05:33,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1146066490, now seen corresponding path program 1 times [2023-12-15 18:05:33,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:05:33,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654905892] [2023-12-15 18:05:33,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:05:33,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:05:33,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:33,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:05:33,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:33,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-15 18:05:33,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:33,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-15 18:05:33,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:33,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-15 18:05:33,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:33,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-15 18:05:33,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:33,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:05:33,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:05:33,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654905892] [2023-12-15 18:05:33,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654905892] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:05:33,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:05:33,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:05:33,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900830221] [2023-12-15 18:05:33,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:05:33,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:05:33,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:05:33,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:05:33,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:05:33,722 INFO L87 Difference]: Start difference. First operand 2626 states and 4209 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:05:36,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:05:36,005 INFO L93 Difference]: Finished difference Result 9131 states and 14826 transitions. [2023-12-15 18:05:36,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 18:05:36,007 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 142 [2023-12-15 18:05:36,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:05:36,034 INFO L225 Difference]: With dead ends: 9131 [2023-12-15 18:05:36,034 INFO L226 Difference]: Without dead ends: 6522 [2023-12-15 18:05:36,042 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-15 18:05:36,043 INFO L413 NwaCegarLoop]: 422 mSDtfsCounter, 1279 mSDsluCounter, 1403 mSDsCounter, 0 mSdLazyCounter, 3044 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1296 SdHoareTripleChecker+Valid, 1825 SdHoareTripleChecker+Invalid, 3107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 3044 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-15 18:05:36,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1296 Valid, 1825 Invalid, 3107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 3044 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-15 18:05:36,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6522 states. [2023-12-15 18:05:36,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6522 to 4939. [2023-12-15 18:05:36,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4939 states, 4490 states have (on average 1.5968819599109132) internal successors, (7170), 4508 states have internal predecessors, (7170), 330 states have call successors, (330), 103 states have call predecessors, (330), 118 states have return successors, (425), 343 states have call predecessors, (425), 328 states have call successors, (425) [2023-12-15 18:05:36,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4939 states to 4939 states and 7925 transitions. [2023-12-15 18:05:36,293 INFO L78 Accepts]: Start accepts. Automaton has 4939 states and 7925 transitions. Word has length 142 [2023-12-15 18:05:36,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:05:36,293 INFO L495 AbstractCegarLoop]: Abstraction has 4939 states and 7925 transitions. [2023-12-15 18:05:36,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:05:36,294 INFO L276 IsEmpty]: Start isEmpty. Operand 4939 states and 7925 transitions. [2023-12-15 18:05:36,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-15 18:05:36,297 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:05:36,297 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] [2023-12-15 18:05:36,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-15 18:05:36,297 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:05:36,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:05:36,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1147014536, now seen corresponding path program 1 times [2023-12-15 18:05:36,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:05:36,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481161433] [2023-12-15 18:05:36,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:05:36,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:05:36,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:36,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:05:36,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:36,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-15 18:05:36,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:36,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-15 18:05:36,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:36,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-15 18:05:36,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:36,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-15 18:05:36,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:36,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:05:36,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:05:36,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481161433] [2023-12-15 18:05:36,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481161433] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:05:36,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:05:36,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:05:36,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568997085] [2023-12-15 18:05:36,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:05:36,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:05:36,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:05:36,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:05:36,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:05:36,440 INFO L87 Difference]: Start difference. First operand 4939 states and 7925 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:05:39,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:05:39,202 INFO L93 Difference]: Finished difference Result 19440 states and 31586 transitions. [2023-12-15 18:05:39,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-15 18:05:39,202 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 142 [2023-12-15 18:05:39,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:05:39,244 INFO L225 Difference]: With dead ends: 19440 [2023-12-15 18:05:39,244 INFO L226 Difference]: Without dead ends: 14518 [2023-12-15 18:05:39,260 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-15 18:05:39,260 INFO L413 NwaCegarLoop]: 252 mSDtfsCounter, 1718 mSDsluCounter, 930 mSDsCounter, 0 mSdLazyCounter, 2533 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1746 SdHoareTripleChecker+Valid, 1182 SdHoareTripleChecker+Invalid, 2635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 2533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-15 18:05:39,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1746 Valid, 1182 Invalid, 2635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 2533 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-15 18:05:39,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14518 states. [2023-12-15 18:05:39,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14518 to 9565. [2023-12-15 18:05:39,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9565 states, 8716 states have (on average 1.595915557595227) internal successors, (13910), 8750 states have internal predecessors, (13910), 618 states have call successors, (618), 199 states have call predecessors, (618), 230 states have return successors, (891), 647 states have call predecessors, (891), 616 states have call successors, (891) [2023-12-15 18:05:39,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9565 states to 9565 states and 15419 transitions. [2023-12-15 18:05:39,711 INFO L78 Accepts]: Start accepts. Automaton has 9565 states and 15419 transitions. Word has length 142 [2023-12-15 18:05:39,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:05:39,712 INFO L495 AbstractCegarLoop]: Abstraction has 9565 states and 15419 transitions. [2023-12-15 18:05:39,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:05:39,712 INFO L276 IsEmpty]: Start isEmpty. Operand 9565 states and 15419 transitions. [2023-12-15 18:05:39,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-15 18:05:39,717 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:05:39,717 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] [2023-12-15 18:05:39,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-15 18:05:39,717 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:05:39,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:05:39,717 INFO L85 PathProgramCache]: Analyzing trace with hash -675658186, now seen corresponding path program 1 times [2023-12-15 18:05:39,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:05:39,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191531758] [2023-12-15 18:05:39,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:05:39,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:05:39,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:39,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:05:39,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:39,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-15 18:05:39,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:39,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-15 18:05:39,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:39,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-15 18:05:39,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:39,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-15 18:05:39,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:39,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:05:39,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:05:39,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191531758] [2023-12-15 18:05:39,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191531758] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:05:39,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:05:39,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:05:39,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028664151] [2023-12-15 18:05:39,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:05:39,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:05:39,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:05:39,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:05:39,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:05:39,869 INFO L87 Difference]: Start difference. First operand 9565 states and 15419 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:05:43,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:05:43,345 INFO L93 Difference]: Finished difference Result 37600 states and 61338 transitions. [2023-12-15 18:05:43,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-15 18:05:43,346 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 142 [2023-12-15 18:05:43,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:05:43,519 INFO L225 Difference]: With dead ends: 37600 [2023-12-15 18:05:43,519 INFO L226 Difference]: Without dead ends: 28052 [2023-12-15 18:05:43,576 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-15 18:05:43,577 INFO L413 NwaCegarLoop]: 419 mSDtfsCounter, 1355 mSDsluCounter, 1395 mSDsCounter, 0 mSdLazyCounter, 3558 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1371 SdHoareTripleChecker+Valid, 1814 SdHoareTripleChecker+Invalid, 3623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 3558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-15 18:05:43,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1371 Valid, 1814 Invalid, 3623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 3558 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-15 18:05:43,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28052 states. [2023-12-15 18:05:44,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28052 to 18494. [2023-12-15 18:05:44,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18494 states, 16861 states have (on average 1.5918391554474824) internal successors, (26840), 16927 states have internal predecessors, (26840), 1178 states have call successors, (1178), 391 states have call predecessors, (1178), 454 states have return successors, (1969), 1239 states have call predecessors, (1969), 1176 states have call successors, (1969) [2023-12-15 18:05:44,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18494 states to 18494 states and 29987 transitions. [2023-12-15 18:05:44,517 INFO L78 Accepts]: Start accepts. Automaton has 18494 states and 29987 transitions. Word has length 142 [2023-12-15 18:05:44,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:05:44,517 INFO L495 AbstractCegarLoop]: Abstraction has 18494 states and 29987 transitions. [2023-12-15 18:05:44,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:05:44,517 INFO L276 IsEmpty]: Start isEmpty. Operand 18494 states and 29987 transitions. [2023-12-15 18:05:44,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-15 18:05:44,525 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:05:44,526 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] [2023-12-15 18:05:44,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-15 18:05:44,526 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:05:44,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:05:44,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1971946168, now seen corresponding path program 1 times [2023-12-15 18:05:44,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:05:44,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548725435] [2023-12-15 18:05:44,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:05:44,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:05:44,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:44,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:05:44,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:44,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-15 18:05:44,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:44,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-15 18:05:44,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:44,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-15 18:05:44,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:44,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-15 18:05:44,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:44,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:05:44,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:05:44,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548725435] [2023-12-15 18:05:44,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548725435] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:05:44,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:05:44,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:05:44,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310424316] [2023-12-15 18:05:44,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:05:44,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:05:44,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:05:44,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:05:44,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:05:44,684 INFO L87 Difference]: Start difference. First operand 18494 states and 29987 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:05:48,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:05:48,694 INFO L93 Difference]: Finished difference Result 72511 states and 118928 transitions. [2023-12-15 18:05:48,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-15 18:05:48,694 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 142 [2023-12-15 18:05:48,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:05:48,841 INFO L225 Difference]: With dead ends: 72511 [2023-12-15 18:05:48,841 INFO L226 Difference]: Without dead ends: 54034 [2023-12-15 18:05:48,886 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-15 18:05:48,887 INFO L413 NwaCegarLoop]: 420 mSDtfsCounter, 1566 mSDsluCounter, 1398 mSDsCounter, 0 mSdLazyCounter, 2981 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1594 SdHoareTripleChecker+Valid, 1818 SdHoareTripleChecker+Invalid, 3047 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 2981 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-15 18:05:48,887 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1594 Valid, 1818 Invalid, 3047 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 2981 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-15 18:05:48,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54034 states. [2023-12-15 18:05:50,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54034 to 36671. [2023-12-15 18:05:50,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36671 states, 33502 states have (on average 1.5920840546833024) internal successors, (53338), 33632 states have internal predecessors, (53338), 2266 states have call successors, (2266), 775 states have call predecessors, (2266), 902 states have return successors, (4579), 2391 states have call predecessors, (4579), 2264 states have call successors, (4579) [2023-12-15 18:05:50,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36671 states to 36671 states and 60183 transitions. [2023-12-15 18:05:50,548 INFO L78 Accepts]: Start accepts. Automaton has 36671 states and 60183 transitions. Word has length 142 [2023-12-15 18:05:50,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:05:50,548 INFO L495 AbstractCegarLoop]: Abstraction has 36671 states and 60183 transitions. [2023-12-15 18:05:50,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:05:50,548 INFO L276 IsEmpty]: Start isEmpty. Operand 36671 states and 60183 transitions. [2023-12-15 18:05:50,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-15 18:05:50,565 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:05:50,565 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] [2023-12-15 18:05:50,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-15 18:05:50,565 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:05:50,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:05:50,565 INFO L85 PathProgramCache]: Analyzing trace with hash -159404554, now seen corresponding path program 1 times [2023-12-15 18:05:50,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:05:50,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64420266] [2023-12-15 18:05:50,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:05:50,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:05:50,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:50,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:05:50,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:50,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-15 18:05:50,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:50,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-15 18:05:50,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:50,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-15 18:05:50,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:50,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-15 18:05:50,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:05:50,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:05:50,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:05:50,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64420266] [2023-12-15 18:05:50,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64420266] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:05:50,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:05:50,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:05:50,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266034400] [2023-12-15 18:05:50,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:05:50,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:05:50,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:05:50,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:05:50,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:05:50,718 INFO L87 Difference]: Start difference. First operand 36671 states and 60183 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:05:56,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:05:56,549 INFO L93 Difference]: Finished difference Result 142270 states and 236054 transitions. [2023-12-15 18:05:56,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-15 18:05:56,550 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 142 [2023-12-15 18:05:56,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:05:56,832 INFO L225 Difference]: With dead ends: 142270 [2023-12-15 18:05:56,832 INFO L226 Difference]: Without dead ends: 105616 [2023-12-15 18:05:56,905 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-15 18:05:56,905 INFO L413 NwaCegarLoop]: 420 mSDtfsCounter, 1336 mSDsluCounter, 1398 mSDsCounter, 0 mSdLazyCounter, 3441 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1352 SdHoareTripleChecker+Valid, 1818 SdHoareTripleChecker+Invalid, 3506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 3441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-15 18:05:56,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1352 Valid, 1818 Invalid, 3506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 3441 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-15 18:05:56,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105616 states. [2023-12-15 18:06:00,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105616 to 73024. [2023-12-15 18:06:00,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73024 states, 66847 states have (on average 1.5925920385357608) internal successors, (106460), 67105 states have internal predecessors, (106460), 4378 states have call successors, (4378), 1543 states have call predecessors, (4378), 1798 states have return successors, (11193), 4631 states have call predecessors, (11193), 4376 states have call successors, (11193) [2023-12-15 18:06:00,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73024 states to 73024 states and 122031 transitions. [2023-12-15 18:06:00,722 INFO L78 Accepts]: Start accepts. Automaton has 73024 states and 122031 transitions. Word has length 142 [2023-12-15 18:06:00,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:06:00,722 INFO L495 AbstractCegarLoop]: Abstraction has 73024 states and 122031 transitions. [2023-12-15 18:06:00,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:06:00,723 INFO L276 IsEmpty]: Start isEmpty. Operand 73024 states and 122031 transitions. [2023-12-15 18:06:00,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-15 18:06:00,771 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:06:00,772 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] [2023-12-15 18:06:00,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-15 18:06:00,772 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:06:00,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:06:00,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1197989128, now seen corresponding path program 1 times [2023-12-15 18:06:00,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:06:00,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171136010] [2023-12-15 18:06:00,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:06:00,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:06:00,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:00,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:06:00,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:00,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-15 18:06:00,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:00,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-15 18:06:00,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:00,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-15 18:06:00,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:00,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-15 18:06:00,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:00,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:06:00,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:06:00,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171136010] [2023-12-15 18:06:00,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171136010] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:06:00,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:06:00,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:06:00,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213624969] [2023-12-15 18:06:00,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:06:00,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:06:00,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:06:00,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:06:00,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:06:00,972 INFO L87 Difference]: Start difference. First operand 73024 states and 122031 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Received shutdown request... [2023-12-15 18:06:06,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-15 18:06:06,916 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 [2023-12-15 18:06:06,919 INFO L413 NwaCegarLoop]: 300 mSDtfsCounter, 1254 mSDsluCounter, 1072 mSDsCounter, 0 mSdLazyCounter, 2177 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1258 SdHoareTripleChecker+Valid, 1372 SdHoareTripleChecker+Invalid, 2227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 2177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-15 18:06:06,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1258 Valid, 1372 Invalid, 2227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 2177 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-15 18:06:06,921 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location error2Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-12-15 18:06:06,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-15 18:06:06,922 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (73024states) and FLOYD_HOARE automaton (currently 15 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (182959 states constructed, input type IntersectNwa). [2023-12-15 18:06:06,923 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location error1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-12-15 18:06:06,941 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, 1, 1, 1] [2023-12-15 18:06:06,943 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 18:06:06,944 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 06:06:06 BoogieIcfgContainer [2023-12-15 18:06:06,944 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 18:06:06,945 INFO L158 Benchmark]: Toolchain (without parser) took 61121.09ms. Allocated memory was 180.4MB in the beginning and 3.9GB in the end (delta: 3.8GB). Free memory was 139.3MB in the beginning and 2.4GB in the end (delta: -2.2GB). Peak memory consumption was 1.6GB. Max. memory is 8.0GB. [2023-12-15 18:06:06,945 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 180.4MB. Free memory is still 128.2MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 18:06:06,945 INFO L158 Benchmark]: CACSL2BoogieTranslator took 350.28ms. Allocated memory is still 180.4MB. Free memory was 138.9MB in the beginning and 113.8MB in the end (delta: 25.1MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. [2023-12-15 18:06:06,945 INFO L158 Benchmark]: Boogie Procedure Inliner took 63.89ms. Allocated memory is still 180.4MB. Free memory was 113.8MB in the beginning and 109.3MB in the end (delta: 4.5MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-15 18:06:06,945 INFO L158 Benchmark]: Boogie Preprocessor took 79.06ms. Allocated memory is still 180.4MB. Free memory was 109.3MB in the beginning and 104.1MB in the end (delta: 5.2MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2023-12-15 18:06:06,946 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 18:06:06,947 INFO L158 Benchmark]: RCFGBuilder took 1111.94ms. Allocated memory was 180.4MB in the beginning and 289.4MB in the end (delta: 109.1MB). Free memory was 103.7MB in the beginning and 215.3MB in the end (delta: -111.5MB). Peak memory consumption was 26.3MB. Max. memory is 8.0GB. [2023-12-15 18:06:06,947 INFO L158 Benchmark]: TraceAbstraction took 59504.51ms. Allocated memory was 289.4MB in the beginning and 3.9GB in the end (delta: 3.6GB). Free memory was 214.8MB in the beginning and 2.4GB in the end (delta: -2.1GB). Peak memory consumption was 1.5GB. Max. memory is 8.0GB. [2023-12-15 18:06:06,953 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 180.4MB. Free memory is still 128.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 350.28ms. Allocated memory is still 180.4MB. Free memory was 138.9MB in the beginning and 113.8MB in the end (delta: 25.1MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 63.89ms. Allocated memory is still 180.4MB. Free memory was 113.8MB in the beginning and 109.3MB in the end (delta: 4.5MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 79.06ms. Allocated memory is still 180.4MB. Free memory was 109.3MB in the beginning and 104.1MB in the end (delta: 5.2MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * RCFGBuilder took 1111.94ms. Allocated memory was 180.4MB in the beginning and 289.4MB in the end (delta: 109.1MB). Free memory was 103.7MB in the beginning and 215.3MB in the end (delta: -111.5MB). Peak memory consumption was 26.3MB. Max. memory is 8.0GB. * TraceAbstraction took 59504.51ms. Allocated memory was 289.4MB in the beginning and 3.9GB in the end (delta: 3.6GB). Free memory was 214.8MB in the beginning and 2.4GB in the end (delta: -2.1GB). Peak memory consumption was 1.5GB. 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 (73024states) and FLOYD_HOARE automaton (currently 15 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (182959 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 (73024states) and FLOYD_HOARE automaton (currently 15 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (182959 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 11 procedures, 373 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 59.5s, OverallIterations: 27, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 46.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 26263 SdHoareTripleChecker+Valid, 28.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 25834 mSDsluCounter, 31292 SdHoareTripleChecker+Invalid, 23.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 21804 mSDsCounter, 1592 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 43046 IncrementalHoareTripleChecker+Invalid, 44638 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1592 mSolverCounterUnsat, 9488 mSDtfsCounter, 43046 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 888 GetRequests, 637 SyntacticMatches, 0 SemanticMatches, 251 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 586 ImplicationChecksByTransitivity, 7.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=73024occurred in iteration=26, InterpolantAutomatonStates: 243, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 7.9s AutomataMinimizationTime, 26 MinimizatonAttempts, 70963 StatesRemovedByMinimization, 25 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.6s InterpolantComputationTime, 3100 NumberOfCodeBlocks, 3100 NumberOfCodeBlocksAsserted, 30 NumberOfCheckSat, 3189 ConstructedInterpolants, 0 QuantifiedInterpolants, 8430 SizeOfPredicates, 2 NumberOfNonLiveVariables, 1144 ConjunctsInSsa, 18 ConjunctsInUnsatCore, 32 InterpolantComputations, 26 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