/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.09.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 14:44:43,423 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 14:44:43,480 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 14:44:43,483 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 14:44:43,490 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 14:44:43,523 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 14:44:43,523 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 14:44:43,524 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 14:44:43,524 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 14:44:43,524 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 14:44:43,525 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 14:44:43,525 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 14:44:43,525 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 14:44:43,526 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 14:44:43,526 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 14:44:43,526 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 14:44:43,526 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 14:44:43,527 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 14:44:43,527 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 14:44:43,527 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 14:44:43,527 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 14:44:43,528 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 14:44:43,528 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 14:44:43,528 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 14:44:43,529 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 14:44:43,529 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 14:44:43,529 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 14:44:43,529 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 14:44:43,530 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 14:44:43,531 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 14:44:43,531 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 14:44:43,531 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 14:44:43,531 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 14:44:43,532 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 14:44:43,532 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 14:44:43,532 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 14:44:43,532 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 14:44:43,532 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 14:44:43,533 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 14:44:43,534 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 14:44:43,534 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 14:44:43,535 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 14:44:43,535 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 14:44:43,535 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-20 14:44:43,726 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 14:44:43,748 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 14:44:43,750 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 14:44:43,750 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 14:44:43,751 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 14:44:43,752 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.09.cil-2.c [2023-12-20 14:44:44,774 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 14:44:44,990 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 14:44:44,990 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.09.cil-2.c [2023-12-20 14:44:45,011 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c2e46e8a/3c3b48eeff4944f7a69eae6f6653ad06/FLAGa9ca4979c [2023-12-20 14:44:45,021 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c2e46e8a/3c3b48eeff4944f7a69eae6f6653ad06 [2023-12-20 14:44:45,023 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 14:44:45,024 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 14:44:45,025 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 14:44:45,026 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 14:44:45,036 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 14:44:45,037 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 02:44:45" (1/1) ... [2023-12-20 14:44:45,038 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9c4cdb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:44:45, skipping insertion in model container [2023-12-20 14:44:45,038 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 02:44:45" (1/1) ... [2023-12-20 14:44:45,081 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 14:44:45,228 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.09.cil-2.c[913,926] [2023-12-20 14:44:45,274 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.09.cil-2.c[5977,5990] [2023-12-20 14:44:45,348 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 14:44:45,361 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 14:44:45,374 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.09.cil-2.c[913,926] [2023-12-20 14:44:45,397 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.09.cil-2.c[5977,5990] [2023-12-20 14:44:45,445 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 14:44:45,466 INFO L206 MainTranslator]: Completed translation [2023-12-20 14:44:45,468 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:44:45 WrapperNode [2023-12-20 14:44:45,469 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 14:44:45,470 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 14:44:45,470 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 14:44:45,470 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 14:44:45,475 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:44:45" (1/1) ... [2023-12-20 14:44:45,486 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:44:45" (1/1) ... [2023-12-20 14:44:45,538 INFO L138 Inliner]: procedures = 66, calls = 76, calls flagged for inlining = 40, calls inlined = 40, statements flattened = 909 [2023-12-20 14:44:45,539 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 14:44:45,539 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 14:44:45,539 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 14:44:45,540 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 14:44:45,556 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:44:45" (1/1) ... [2023-12-20 14:44:45,556 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:44:45" (1/1) ... [2023-12-20 14:44:45,559 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:44:45" (1/1) ... [2023-12-20 14:44:45,573 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-20 14:44:45,574 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:44:45" (1/1) ... [2023-12-20 14:44:45,574 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:44:45" (1/1) ... [2023-12-20 14:44:45,581 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:44:45" (1/1) ... [2023-12-20 14:44:45,606 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:44:45" (1/1) ... [2023-12-20 14:44:45,608 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:44:45" (1/1) ... [2023-12-20 14:44:45,610 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:44:45" (1/1) ... [2023-12-20 14:44:45,614 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 14:44:45,615 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 14:44:45,615 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 14:44:45,615 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 14:44:45,615 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:44:45" (1/1) ... [2023-12-20 14:44:45,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 14:44:45,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:44:45,667 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-20 14:44:45,687 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-20 14:44:45,696 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 14:44:45,696 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-20 14:44:45,696 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-20 14:44:45,697 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2023-12-20 14:44:45,697 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2023-12-20 14:44:45,698 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2023-12-20 14:44:45,698 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2023-12-20 14:44:45,698 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2023-12-20 14:44:45,698 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2023-12-20 14:44:45,698 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2023-12-20 14:44:45,698 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2023-12-20 14:44:45,698 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2023-12-20 14:44:45,698 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2023-12-20 14:44:45,698 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2023-12-20 14:44:45,698 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2023-12-20 14:44:45,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 14:44:45,699 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2023-12-20 14:44:45,699 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2023-12-20 14:44:45,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 14:44:45,699 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 14:44:45,699 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2023-12-20 14:44:45,699 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2023-12-20 14:44:45,699 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2023-12-20 14:44:45,699 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2023-12-20 14:44:45,818 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 14:44:45,820 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 14:44:46,392 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 14:44:46,447 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 14:44:46,447 INFO L309 CfgBuilder]: Removed 16 assume(true) statements. [2023-12-20 14:44:46,448 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 02:44:46 BoogieIcfgContainer [2023-12-20 14:44:46,448 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 14:44:46,450 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 14:44:46,450 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 14:44:46,452 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 14:44:46,452 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 02:44:45" (1/3) ... [2023-12-20 14:44:46,453 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b7c295a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 02:44:46, skipping insertion in model container [2023-12-20 14:44:46,453 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:44:45" (2/3) ... [2023-12-20 14:44:46,453 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b7c295a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 02:44:46, skipping insertion in model container [2023-12-20 14:44:46,453 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 02:44:46" (3/3) ... [2023-12-20 14:44:46,454 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-2+token_ring.09.cil-2.c [2023-12-20 14:44:46,465 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 14:44:46,465 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-20 14:44:46,511 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 14:44:46,516 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;@63ffcdde, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 14:44:46,516 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-20 14:44:46,521 INFO L276 IsEmpty]: Start isEmpty. Operand has 350 states, 306 states have (on average 1.7189542483660132) internal successors, (526), 313 states have internal predecessors, (526), 31 states have call successors, (31), 10 states have call predecessors, (31), 10 states have return successors, (31), 29 states have call predecessors, (31), 31 states have call successors, (31) [2023-12-20 14:44:46,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-20 14:44:46,530 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:44:46,530 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] [2023-12-20 14:44:46,530 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:44:46,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:44:46,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1675024138, now seen corresponding path program 1 times [2023-12-20 14:44:46,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:44:46,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162374258] [2023-12-20 14:44:46,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:44:46,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:44:46,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:44:46,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-20 14:44:46,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:44:46,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-20 14:44:46,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:44:46,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:44:46,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:44:46,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162374258] [2023-12-20 14:44:46,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162374258] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:44:46,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:44:46,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 14:44:46,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103295566] [2023-12-20 14:44:46,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:44:46,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 14:44:46,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:44:46,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 14:44:46,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 14:44:46,798 INFO L87 Difference]: Start difference. First operand has 350 states, 306 states have (on average 1.7189542483660132) internal successors, (526), 313 states have internal predecessors, (526), 31 states have call successors, (31), 10 states have call predecessors, (31), 10 states have return successors, (31), 29 states have call predecessors, (31), 31 states have call successors, (31) Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-20 14:44:47,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:44:47,381 INFO L93 Difference]: Finished difference Result 743 states and 1246 transitions. [2023-12-20 14:44:47,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 14:44:47,383 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 [2023-12-20 14:44:47,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:44:47,399 INFO L225 Difference]: With dead ends: 743 [2023-12-20 14:44:47,400 INFO L226 Difference]: Without dead ends: 407 [2023-12-20 14:44:47,408 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 [2023-12-20 14:44:47,412 INFO L413 NwaCegarLoop]: 318 mSDtfsCounter, 728 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 750 SdHoareTripleChecker+Valid, 618 SdHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-20 14:44:47,413 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [750 Valid, 618 Invalid, 418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 371 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-20 14:44:47,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2023-12-20 14:44:47,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 401. [2023-12-20 14:44:47,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 353 states have (on average 1.5779036827195467) internal successors, (557), 358 states have internal predecessors, (557), 35 states have call successors, (35), 12 states have call predecessors, (35), 11 states have return successors, (37), 31 states have call predecessors, (37), 31 states have call successors, (37) [2023-12-20 14:44:47,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 629 transitions. [2023-12-20 14:44:47,469 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 629 transitions. Word has length 37 [2023-12-20 14:44:47,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:44:47,469 INFO L495 AbstractCegarLoop]: Abstraction has 401 states and 629 transitions. [2023-12-20 14:44:47,469 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) [2023-12-20 14:44:47,470 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 629 transitions. [2023-12-20 14:44:47,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-20 14:44:47,472 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:44:47,472 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:44:47,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 14:44:47,472 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:44:47,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:44:47,473 INFO L85 PathProgramCache]: Analyzing trace with hash -1251968860, now seen corresponding path program 1 times [2023-12-20 14:44:47,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:44:47,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565740685] [2023-12-20 14:44:47,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:44:47,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:44:47,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:44:47,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-20 14:44:47,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:44:47,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-20 14:44:47,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:44:47,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:44:47,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:44:47,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565740685] [2023-12-20 14:44:47,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565740685] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:44:47,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:44:47,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 14:44:47,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83961467] [2023-12-20 14:44:47,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:44:47,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 14:44:47,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:44:47,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 14:44:47,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 14:44:47,572 INFO L87 Difference]: Start difference. First operand 401 states and 629 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) [2023-12-20 14:44:47,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:44:47,897 INFO L93 Difference]: Finished difference Result 635 states and 973 transitions. [2023-12-20 14:44:47,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 14:44:47,898 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 [2023-12-20 14:44:47,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:44:47,901 INFO L225 Difference]: With dead ends: 635 [2023-12-20 14:44:47,901 INFO L226 Difference]: Without dead ends: 524 [2023-12-20 14:44:47,902 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 [2023-12-20 14:44:47,903 INFO L413 NwaCegarLoop]: 316 mSDtfsCounter, 741 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 335 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 764 SdHoareTripleChecker+Valid, 615 SdHoareTripleChecker+Invalid, 378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-20 14:44:47,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [764 Valid, 615 Invalid, 378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 335 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-20 14:44:47,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2023-12-20 14:44:47,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 501. [2023-12-20 14:44:47,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 501 states, 440 states have (on average 1.5340909090909092) internal successors, (675), 446 states have internal predecessors, (675), 43 states have call successors, (43), 16 states have call predecessors, (43), 16 states have return successors, (51), 39 states have call predecessors, (51), 39 states have call successors, (51) [2023-12-20 14:44:47,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 769 transitions. [2023-12-20 14:44:47,943 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 769 transitions. Word has length 38 [2023-12-20 14:44:47,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:44:47,944 INFO L495 AbstractCegarLoop]: Abstraction has 501 states and 769 transitions. [2023-12-20 14:44:47,944 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) [2023-12-20 14:44:47,944 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 769 transitions. [2023-12-20 14:44:47,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-12-20 14:44:47,946 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:44:47,946 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] [2023-12-20 14:44:47,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 14:44:47,946 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:44:47,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:44:47,947 INFO L85 PathProgramCache]: Analyzing trace with hash 906822250, now seen corresponding path program 1 times [2023-12-20 14:44:47,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:44:47,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257523378] [2023-12-20 14:44:47,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:44:47,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:44:47,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:44:47,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-20 14:44:47,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:44:47,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-20 14:44:47,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:44:48,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:44:48,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:44:48,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257523378] [2023-12-20 14:44:48,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257523378] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:44:48,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:44:48,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 14:44:48,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924332210] [2023-12-20 14:44:48,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:44:48,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 14:44:48,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:44:48,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 14:44:48,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 14:44:48,002 INFO L87 Difference]: Start difference. First operand 501 states and 769 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) [2023-12-20 14:44:48,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:44:48,394 INFO L93 Difference]: Finished difference Result 921 states and 1350 transitions. [2023-12-20 14:44:48,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 14:44:48,395 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 [2023-12-20 14:44:48,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:44:48,398 INFO L225 Difference]: With dead ends: 921 [2023-12-20 14:44:48,399 INFO L226 Difference]: Without dead ends: 710 [2023-12-20 14:44:48,399 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 [2023-12-20 14:44:48,401 INFO L413 NwaCegarLoop]: 348 mSDtfsCounter, 290 mSDsluCounter, 517 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 865 SdHoareTripleChecker+Invalid, 621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-20 14:44:48,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [292 Valid, 865 Invalid, 621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 585 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-20 14:44:48,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 710 states. [2023-12-20 14:44:48,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 710 to 606. [2023-12-20 14:44:48,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 606 states, 533 states have (on average 1.5084427767354596) internal successors, (804), 541 states have internal predecessors, (804), 49 states have call successors, (49), 22 states have call predecessors, (49), 22 states have return successors, (57), 43 states have call predecessors, (57), 45 states have call successors, (57) [2023-12-20 14:44:48,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 606 states to 606 states and 910 transitions. [2023-12-20 14:44:48,428 INFO L78 Accepts]: Start accepts. Automaton has 606 states and 910 transitions. Word has length 39 [2023-12-20 14:44:48,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:44:48,428 INFO L495 AbstractCegarLoop]: Abstraction has 606 states and 910 transitions. [2023-12-20 14:44:48,429 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) [2023-12-20 14:44:48,429 INFO L276 IsEmpty]: Start isEmpty. Operand 606 states and 910 transitions. [2023-12-20 14:44:48,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-20 14:44:48,431 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:44:48,431 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] [2023-12-20 14:44:48,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 14:44:48,431 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:44:48,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:44:48,431 INFO L85 PathProgramCache]: Analyzing trace with hash 108220691, now seen corresponding path program 1 times [2023-12-20 14:44:48,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:44:48,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478811891] [2023-12-20 14:44:48,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:44:48,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:44:48,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:44:48,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-20 14:44:48,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:44:48,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-20 14:44:48,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:44:48,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-20 14:44:48,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:44:48,490 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-20 14:44:48,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:44:48,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478811891] [2023-12-20 14:44:48,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478811891] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:44:48,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:44:48,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 14:44:48,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132521597] [2023-12-20 14:44:48,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:44:48,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 14:44:48,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:44:48,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 14:44:48,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 14:44:48,492 INFO L87 Difference]: Start difference. First operand 606 states and 910 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) [2023-12-20 14:44:48,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:44:48,829 INFO L93 Difference]: Finished difference Result 1122 states and 1627 transitions. [2023-12-20 14:44:48,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 14:44:48,830 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 [2023-12-20 14:44:48,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:44:48,835 INFO L225 Difference]: With dead ends: 1122 [2023-12-20 14:44:48,835 INFO L226 Difference]: Without dead ends: 806 [2023-12-20 14:44:48,836 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 [2023-12-20 14:44:48,841 INFO L413 NwaCegarLoop]: 368 mSDtfsCounter, 275 mSDsluCounter, 544 mSDsCounter, 0 mSdLazyCounter, 609 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 912 SdHoareTripleChecker+Invalid, 641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-20 14:44:48,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 912 Invalid, 641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 609 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-20 14:44:48,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2023-12-20 14:44:48,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 772. [2023-12-20 14:44:48,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 772 states, 675 states have (on average 1.451851851851852) internal successors, (980), 685 states have internal predecessors, (980), 63 states have call successors, (63), 30 states have call predecessors, (63), 32 states have return successors, (81), 57 states have call predecessors, (81), 59 states have call successors, (81) [2023-12-20 14:44:48,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 772 states to 772 states and 1124 transitions. [2023-12-20 14:44:48,878 INFO L78 Accepts]: Start accepts. Automaton has 772 states and 1124 transitions. Word has length 54 [2023-12-20 14:44:48,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:44:48,879 INFO L495 AbstractCegarLoop]: Abstraction has 772 states and 1124 transitions. [2023-12-20 14:44:48,879 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) [2023-12-20 14:44:48,880 INFO L276 IsEmpty]: Start isEmpty. Operand 772 states and 1124 transitions. [2023-12-20 14:44:48,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-20 14:44:48,884 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:44:48,884 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] [2023-12-20 14:44:48,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 14:44:48,885 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:44:48,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:44:48,885 INFO L85 PathProgramCache]: Analyzing trace with hash -1111684561, now seen corresponding path program 1 times [2023-12-20 14:44:48,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:44:48,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619453737] [2023-12-20 14:44:48,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:44:48,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:44:48,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:44:48,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-20 14:44:48,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:44:48,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-20 14:44:48,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:44:48,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-20 14:44:48,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:44:48,934 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-20 14:44:48,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:44:48,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619453737] [2023-12-20 14:44:48,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619453737] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:44:48,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:44:48,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 14:44:48,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920291110] [2023-12-20 14:44:48,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:44:48,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 14:44:48,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:44:48,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 14:44:48,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 14:44:48,936 INFO L87 Difference]: Start difference. First operand 772 states and 1124 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) [2023-12-20 14:44:49,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:44:49,249 INFO L93 Difference]: Finished difference Result 1351 states and 1903 transitions. [2023-12-20 14:44:49,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 14:44:49,249 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 [2023-12-20 14:44:49,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:44:49,254 INFO L225 Difference]: With dead ends: 1351 [2023-12-20 14:44:49,254 INFO L226 Difference]: Without dead ends: 949 [2023-12-20 14:44:49,257 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 [2023-12-20 14:44:49,259 INFO L413 NwaCegarLoop]: 322 mSDtfsCounter, 727 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 335 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 750 SdHoareTripleChecker+Valid, 627 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-20 14:44:49,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [750 Valid, 627 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 335 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-20 14:44:49,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 949 states. [2023-12-20 14:44:49,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 949 to 900. [2023-12-20 14:44:49,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 900 states, 787 states have (on average 1.4167725540025413) internal successors, (1115), 799 states have internal predecessors, (1115), 71 states have call successors, (71), 36 states have call predecessors, (71), 40 states have return successors, (95), 65 states have call predecessors, (95), 67 states have call successors, (95) [2023-12-20 14:44:49,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 900 states to 900 states and 1281 transitions. [2023-12-20 14:44:49,290 INFO L78 Accepts]: Start accepts. Automaton has 900 states and 1281 transitions. Word has length 59 [2023-12-20 14:44:49,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:44:49,290 INFO L495 AbstractCegarLoop]: Abstraction has 900 states and 1281 transitions. [2023-12-20 14:44:49,291 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) [2023-12-20 14:44:49,291 INFO L276 IsEmpty]: Start isEmpty. Operand 900 states and 1281 transitions. [2023-12-20 14:44:49,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-20 14:44:49,292 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:44:49,292 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, 1, 1, 1, 1, 1, 1] [2023-12-20 14:44:49,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 14:44:49,292 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:44:49,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:44:49,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1225729732, now seen corresponding path program 1 times [2023-12-20 14:44:49,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:44:49,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167688700] [2023-12-20 14:44:49,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:44:49,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:44:49,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:44:49,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-20 14:44:49,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:44:49,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-20 14:44:49,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:44:49,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-20 14:44:49,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:44:49,375 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-20 14:44:49,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:44:49,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167688700] [2023-12-20 14:44:49,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167688700] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:44:49,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:44:49,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 14:44:49,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390001520] [2023-12-20 14:44:49,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:44:49,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 14:44:49,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:44:49,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 14:44:49,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 14:44:49,377 INFO L87 Difference]: Start difference. First operand 900 states and 1281 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 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) [2023-12-20 14:44:49,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:44:49,793 INFO L93 Difference]: Finished difference Result 1386 states and 1943 transitions. [2023-12-20 14:44:49,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 14:44:49,794 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 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 [2023-12-20 14:44:49,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:44:49,797 INFO L225 Difference]: With dead ends: 1386 [2023-12-20 14:44:49,797 INFO L226 Difference]: Without dead ends: 848 [2023-12-20 14:44:49,799 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 [2023-12-20 14:44:49,799 INFO L413 NwaCegarLoop]: 317 mSDtfsCounter, 227 mSDsluCounter, 808 mSDsCounter, 0 mSdLazyCounter, 844 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 1125 SdHoareTripleChecker+Invalid, 874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 844 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-20 14:44:49,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 1125 Invalid, 874 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 844 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-20 14:44:49,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 848 states. [2023-12-20 14:44:49,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 848 to 775. [2023-12-20 14:44:49,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 775 states, 679 states have (on average 1.4256259204712813) internal successors, (968), 690 states have internal predecessors, (968), 61 states have call successors, (61), 30 states have call predecessors, (61), 33 states have return successors, (77), 55 states have call predecessors, (77), 57 states have call successors, (77) [2023-12-20 14:44:49,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 775 states to 775 states and 1106 transitions. [2023-12-20 14:44:49,825 INFO L78 Accepts]: Start accepts. Automaton has 775 states and 1106 transitions. Word has length 60 [2023-12-20 14:44:49,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:44:49,825 INFO L495 AbstractCegarLoop]: Abstraction has 775 states and 1106 transitions. [2023-12-20 14:44:49,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 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) [2023-12-20 14:44:49,825 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states and 1106 transitions. [2023-12-20 14:44:49,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-20 14:44:49,826 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:44:49,826 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, 1, 1, 1, 1, 1, 1] [2023-12-20 14:44:49,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 14:44:49,827 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:44:49,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:44:49,827 INFO L85 PathProgramCache]: Analyzing trace with hash 571909884, now seen corresponding path program 1 times [2023-12-20 14:44:49,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:44:49,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292024727] [2023-12-20 14:44:49,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:44:49,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:44:49,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:44:49,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-20 14:44:49,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:44:49,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-20 14:44:49,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:44:49,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-20 14:44:49,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:44:49,889 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-20 14:44:49,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:44:49,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292024727] [2023-12-20 14:44:49,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292024727] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:44:49,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1916320828] [2023-12-20 14:44:49,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:44:49,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:44:49,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:44:49,896 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 14:44:49,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-20 14:44:50,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:44:50,021 INFO L262 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-20 14:44:50,026 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:44:50,086 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 14:44:50,086 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 14:44:50,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1916320828] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:44:50,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 14:44:50,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-12-20 14:44:50,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262328800] [2023-12-20 14:44:50,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:44:50,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:44:50,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:44:50,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:44:50,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-20 14:44:50,088 INFO L87 Difference]: Start difference. First operand 775 states and 1106 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 3 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) [2023-12-20 14:44:50,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:44:50,179 INFO L93 Difference]: Finished difference Result 1172 states and 1643 transitions. [2023-12-20 14:44:50,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:44:50,180 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 3 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 [2023-12-20 14:44:50,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:44:50,184 INFO L225 Difference]: With dead ends: 1172 [2023-12-20 14:44:50,184 INFO L226 Difference]: Without dead ends: 773 [2023-12-20 14:44:50,186 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-20 14:44:50,187 INFO L413 NwaCegarLoop]: 543 mSDtfsCounter, 66 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 1021 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 14:44:50,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 1021 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 14:44:50,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 773 states. [2023-12-20 14:44:50,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 773 to 735. [2023-12-20 14:44:50,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 735 states, 645 states have (on average 1.413953488372093) internal successors, (912), 656 states have internal predecessors, (912), 57 states have call successors, (57), 28 states have call predecessors, (57), 31 states have return successors, (71), 51 states have call predecessors, (71), 53 states have call successors, (71) [2023-12-20 14:44:50,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 735 states to 735 states and 1040 transitions. [2023-12-20 14:44:50,220 INFO L78 Accepts]: Start accepts. Automaton has 735 states and 1040 transitions. Word has length 60 [2023-12-20 14:44:50,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:44:50,222 INFO L495 AbstractCegarLoop]: Abstraction has 735 states and 1040 transitions. [2023-12-20 14:44:50,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 3 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) [2023-12-20 14:44:50,222 INFO L276 IsEmpty]: Start isEmpty. Operand 735 states and 1040 transitions. [2023-12-20 14:44:50,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-20 14:44:50,223 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:44:50,223 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] [2023-12-20 14:44:50,243 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-20 14:44:50,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:44:50,433 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:44:50,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:44:50,433 INFO L85 PathProgramCache]: Analyzing trace with hash 1642333563, now seen corresponding path program 1 times [2023-12-20 14:44:50,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:44:50,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199753444] [2023-12-20 14:44:50,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:44:50,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:44:50,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:44:50,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-20 14:44:50,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:44:50,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-20 14:44:50,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:44:50,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-20 14:44:50,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:44:50,545 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 14:44:50,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:44:50,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199753444] [2023-12-20 14:44:50,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199753444] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:44:50,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [710137466] [2023-12-20 14:44:50,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:44:50,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:44:50,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:44:50,557 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 14:44:50,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-20 14:44:50,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:44:50,655 INFO L262 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-20 14:44:50,657 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:44:50,728 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:44:50,729 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 14:44:50,774 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-20 14:44:50,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [710137466] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-20 14:44:50,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-20 14:44:50,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 7 [2023-12-20 14:44:50,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005730460] [2023-12-20 14:44:50,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:44:50,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 14:44:50,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:44:50,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 14:44:50,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:44:50,778 INFO L87 Difference]: Start difference. First operand 735 states and 1040 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) [2023-12-20 14:44:50,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:44:50,948 INFO L93 Difference]: Finished difference Result 780 states and 1095 transitions. [2023-12-20 14:44:50,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 14:44:50,948 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 [2023-12-20 14:44:50,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:44:50,951 INFO L225 Difference]: With dead ends: 780 [2023-12-20 14:44:50,951 INFO L226 Difference]: Without dead ends: 777 [2023-12-20 14:44:50,952 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 [2023-12-20 14:44:50,953 INFO L413 NwaCegarLoop]: 517 mSDtfsCounter, 974 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 974 SdHoareTripleChecker+Valid, 570 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 14:44:50,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [974 Valid, 570 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 14:44:50,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 777 states. [2023-12-20 14:44:50,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 777 to 734. [2023-12-20 14:44:50,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 734 states, 645 states have (on average 1.4108527131782946) internal successors, (910), 655 states have internal predecessors, (910), 56 states have call successors, (56), 28 states have call predecessors, (56), 31 states have return successors, (71), 51 states have call predecessors, (71), 53 states have call successors, (71) [2023-12-20 14:44:50,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 734 states to 734 states and 1037 transitions. [2023-12-20 14:44:50,984 INFO L78 Accepts]: Start accepts. Automaton has 734 states and 1037 transitions. Word has length 60 [2023-12-20 14:44:50,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:44:50,985 INFO L495 AbstractCegarLoop]: Abstraction has 734 states and 1037 transitions. [2023-12-20 14:44:50,985 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) [2023-12-20 14:44:50,985 INFO L276 IsEmpty]: Start isEmpty. Operand 734 states and 1037 transitions. [2023-12-20 14:44:50,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-20 14:44:50,986 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:44:50,986 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] [2023-12-20 14:44:51,010 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-20 14:44:51,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-20 14:44:51,196 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:44:51,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:44:51,196 INFO L85 PathProgramCache]: Analyzing trace with hash -628477486, now seen corresponding path program 1 times [2023-12-20 14:44:51,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:44:51,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678274125] [2023-12-20 14:44:51,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:44:51,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:44:51,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:44:51,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-20 14:44:51,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:44:51,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-20 14:44:51,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:44:51,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-20 14:44:51,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:44:51,285 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 14:44:51,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:44:51,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678274125] [2023-12-20 14:44:51,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678274125] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:44:51,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [302273290] [2023-12-20 14:44:51,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:44:51,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:44:51,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:44:51,287 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 14:44:51,311 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-20 14:44:51,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:44:51,382 INFO L262 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-20 14:44:51,384 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:44:51,555 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:44:51,555 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 14:44:51,604 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-20 14:44:51,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [302273290] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 14:44:51,605 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 14:44:51,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 10 [2023-12-20 14:44:51,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814670503] [2023-12-20 14:44:51,605 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 14:44:51,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-20 14:44:51,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:44:51,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-20 14:44:51,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-12-20 14:44:51,606 INFO L87 Difference]: Start difference. First operand 734 states and 1037 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) [2023-12-20 14:44:52,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:44:52,616 INFO L93 Difference]: Finished difference Result 1800 states and 2433 transitions. [2023-12-20 14:44:52,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-20 14:44:52,616 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 [2023-12-20 14:44:52,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:44:52,621 INFO L225 Difference]: With dead ends: 1800 [2023-12-20 14:44:52,621 INFO L226 Difference]: Without dead ends: 1444 [2023-12-20 14:44:52,622 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 [2023-12-20 14:44:52,624 INFO L413 NwaCegarLoop]: 376 mSDtfsCounter, 903 mSDsluCounter, 2044 mSDsCounter, 0 mSdLazyCounter, 1982 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 933 SdHoareTripleChecker+Valid, 2420 SdHoareTripleChecker+Invalid, 2023 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1982 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-20 14:44:52,624 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [933 Valid, 2420 Invalid, 2023 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1982 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-20 14:44:52,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1444 states. [2023-12-20 14:44:52,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1444 to 1053. [2023-12-20 14:44:52,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1053 states, 927 states have (on average 1.3613807982740023) internal successors, (1262), 944 states have internal predecessors, (1262), 75 states have call successors, (75), 41 states have call predecessors, (75), 49 states have return successors, (102), 68 states have call predecessors, (102), 72 states have call successors, (102) [2023-12-20 14:44:52,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1053 states to 1053 states and 1439 transitions. [2023-12-20 14:44:52,661 INFO L78 Accepts]: Start accepts. Automaton has 1053 states and 1439 transitions. Word has length 61 [2023-12-20 14:44:52,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:44:52,661 INFO L495 AbstractCegarLoop]: Abstraction has 1053 states and 1439 transitions. [2023-12-20 14:44:52,661 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) [2023-12-20 14:44:52,661 INFO L276 IsEmpty]: Start isEmpty. Operand 1053 states and 1439 transitions. [2023-12-20 14:44:52,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-20 14:44:52,662 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:44:52,663 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] [2023-12-20 14:44:52,670 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-20 14:44:52,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:44:52,868 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:44:52,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:44:52,869 INFO L85 PathProgramCache]: Analyzing trace with hash 980123641, now seen corresponding path program 1 times [2023-12-20 14:44:52,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:44:52,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253521733] [2023-12-20 14:44:52,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:44:52,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:44:52,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:44:52,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-20 14:44:52,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:44:52,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-20 14:44:52,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:44:52,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-20 14:44:52,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:44:52,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-20 14:44:52,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:44:52,904 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-20 14:44:52,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:44:52,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253521733] [2023-12-20 14:44:52,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253521733] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:44:52,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:44:52,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 14:44:52,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718311430] [2023-12-20 14:44:52,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:44:52,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 14:44:52,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:44:52,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 14:44:52,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 14:44:52,905 INFO L87 Difference]: Start difference. First operand 1053 states and 1439 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) [2023-12-20 14:44:53,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:44:53,198 INFO L93 Difference]: Finished difference Result 1655 states and 2202 transitions. [2023-12-20 14:44:53,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 14:44:53,198 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 [2023-12-20 14:44:53,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:44:53,202 INFO L225 Difference]: With dead ends: 1655 [2023-12-20 14:44:53,202 INFO L226 Difference]: Without dead ends: 1060 [2023-12-20 14:44:53,203 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 [2023-12-20 14:44:53,204 INFO L413 NwaCegarLoop]: 327 mSDtfsCounter, 737 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 761 SdHoareTripleChecker+Valid, 637 SdHoareTripleChecker+Invalid, 377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 14:44:53,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [761 Valid, 637 Invalid, 377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 14:44:53,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1060 states. [2023-12-20 14:44:53,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1060 to 989. [2023-12-20 14:44:53,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 989 states, 870 states have (on average 1.3586206896551725) internal successors, (1182), 887 states have internal predecessors, (1182), 72 states have call successors, (72), 38 states have call predecessors, (72), 45 states have return successors, (97), 64 states have call predecessors, (97), 69 states have call successors, (97) [2023-12-20 14:44:53,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 989 states to 989 states and 1351 transitions. [2023-12-20 14:44:53,237 INFO L78 Accepts]: Start accepts. Automaton has 989 states and 1351 transitions. Word has length 78 [2023-12-20 14:44:53,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:44:53,237 INFO L495 AbstractCegarLoop]: Abstraction has 989 states and 1351 transitions. [2023-12-20 14:44:53,237 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) [2023-12-20 14:44:53,237 INFO L276 IsEmpty]: Start isEmpty. Operand 989 states and 1351 transitions. [2023-12-20 14:44:53,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-20 14:44:53,239 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:44:53,239 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] [2023-12-20 14:44:53,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-20 14:44:53,239 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:44:53,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:44:53,239 INFO L85 PathProgramCache]: Analyzing trace with hash 324762393, now seen corresponding path program 1 times [2023-12-20 14:44:53,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:44:53,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227757274] [2023-12-20 14:44:53,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:44:53,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:44:53,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:44:53,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-20 14:44:53,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:44:53,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-20 14:44:53,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:44:53,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-12-20 14:44:53,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:44:53,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-20 14:44:53,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:44:53,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-20 14:44:53,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:44:53,325 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 16 proven. 20 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-20 14:44:53,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:44:53,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227757274] [2023-12-20 14:44:53,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227757274] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:44:53,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [75737268] [2023-12-20 14:44:53,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:44:53,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:44:53,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:44:53,342 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 14:44:53,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-20 14:44:53,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:44:53,449 INFO L262 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 14:44:53,457 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:44:53,470 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-20 14:44:53,470 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 14:44:53,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [75737268] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:44:53,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 14:44:53,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-12-20 14:44:53,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906331294] [2023-12-20 14:44:53,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:44:53,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:44:53,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:44:53,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:44:53,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-20 14:44:53,472 INFO L87 Difference]: Start difference. First operand 989 states and 1351 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) [2023-12-20 14:44:53,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:44:53,535 INFO L93 Difference]: Finished difference Result 1272 states and 1702 transitions. [2023-12-20 14:44:53,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:44:53,535 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 [2023-12-20 14:44:53,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:44:53,536 INFO L225 Difference]: With dead ends: 1272 [2023-12-20 14:44:53,537 INFO L226 Difference]: Without dead ends: 285 [2023-12-20 14:44:53,538 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 [2023-12-20 14:44:53,539 INFO L413 NwaCegarLoop]: 534 mSDtfsCounter, 54 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 1013 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:44:53,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 1013 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:44:53,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2023-12-20 14:44:53,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 285. [2023-12-20 14:44:53,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 253 states have (on average 1.6284584980237153) internal successors, (412), 255 states have internal predecessors, (412), 25 states have call successors, (25), 7 states have call predecessors, (25), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-12-20 14:44:53,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 460 transitions. [2023-12-20 14:44:53,549 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 460 transitions. Word has length 92 [2023-12-20 14:44:53,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:44:53,549 INFO L495 AbstractCegarLoop]: Abstraction has 285 states and 460 transitions. [2023-12-20 14:44:53,549 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) [2023-12-20 14:44:53,549 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 460 transitions. [2023-12-20 14:44:53,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-20 14:44:53,550 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:44:53,550 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] [2023-12-20 14:44:53,559 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-20 14:44:53,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:44:53,756 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:44:53,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:44:53,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1062734095, now seen corresponding path program 1 times [2023-12-20 14:44:53,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:44:53,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47395174] [2023-12-20 14:44:53,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:44:53,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:44:53,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:44:53,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:44:53,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:44:53,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-20 14:44:53,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:44:53,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-20 14:44:53,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:44:53,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-20 14:44:53,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:44:53,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-20 14:44:53,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:44:53,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:44:53,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:44:53,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47395174] [2023-12-20 14:44:53,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47395174] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:44:53,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:44:53,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 14:44:53,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777877960] [2023-12-20 14:44:53,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:44:53,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 14:44:53,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:44:53,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 14:44:53,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 14:44:53,892 INFO L87 Difference]: Start difference. First operand 285 states and 460 transitions. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 3 states have internal predecessors, (121), 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) [2023-12-20 14:44:54,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:44:54,925 INFO L93 Difference]: Finished difference Result 661 states and 1084 transitions. [2023-12-20 14:44:54,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 14:44:54,926 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 3 states have internal predecessors, (121), 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 132 [2023-12-20 14:44:54,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:44:54,928 INFO L225 Difference]: With dead ends: 661 [2023-12-20 14:44:54,928 INFO L226 Difference]: Without dead ends: 385 [2023-12-20 14:44:54,929 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 [2023-12-20 14:44:54,929 INFO L413 NwaCegarLoop]: 251 mSDtfsCounter, 774 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 827 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 795 SdHoareTripleChecker+Valid, 528 SdHoareTripleChecker+Invalid, 881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 827 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-20 14:44:54,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [795 Valid, 528 Invalid, 881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 827 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-20 14:44:54,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2023-12-20 14:44:54,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 285. [2023-12-20 14:44:54,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 253 states have (on average 1.6245059288537549) internal successors, (411), 255 states have internal predecessors, (411), 25 states have call successors, (25), 7 states have call predecessors, (25), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-12-20 14:44:54,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 459 transitions. [2023-12-20 14:44:54,942 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 459 transitions. Word has length 132 [2023-12-20 14:44:54,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:44:54,942 INFO L495 AbstractCegarLoop]: Abstraction has 285 states and 459 transitions. [2023-12-20 14:44:54,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 3 states have internal predecessors, (121), 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) [2023-12-20 14:44:54,943 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 459 transitions. [2023-12-20 14:44:54,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-20 14:44:54,943 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:44:54,943 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] [2023-12-20 14:44:54,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-20 14:44:54,944 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:44:54,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:44:54,944 INFO L85 PathProgramCache]: Analyzing trace with hash -1181824303, now seen corresponding path program 1 times [2023-12-20 14:44:54,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:44:54,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741264453] [2023-12-20 14:44:54,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:44:54,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:44:54,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:44:54,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:44:54,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:44:55,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-20 14:44:55,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:44:55,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-20 14:44:55,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:44:55,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-20 14:44:55,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:44:55,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-20 14:44:55,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:44:55,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:44:55,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:44:55,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741264453] [2023-12-20 14:44:55,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741264453] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:44:55,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:44:55,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 14:44:55,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883186528] [2023-12-20 14:44:55,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:44:55,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 14:44:55,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:44:55,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 14:44:55,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-20 14:44:55,112 INFO L87 Difference]: Start difference. First operand 285 states and 459 transitions. Second operand has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:44:56,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:44:56,887 INFO L93 Difference]: Finished difference Result 1036 states and 1707 transitions. [2023-12-20 14:44:56,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-20 14:44:56,887 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 4 states have internal predecessors, (121), 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 132 [2023-12-20 14:44:56,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:44:56,890 INFO L225 Difference]: With dead ends: 1036 [2023-12-20 14:44:56,890 INFO L226 Difference]: Without dead ends: 767 [2023-12-20 14:44:56,891 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 [2023-12-20 14:44:56,892 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 1172 mSDsluCounter, 665 mSDsCounter, 0 mSdLazyCounter, 1789 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1188 SdHoareTripleChecker+Valid, 890 SdHoareTripleChecker+Invalid, 1893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 1789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-20 14:44:56,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1188 Valid, 890 Invalid, 1893 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 1789 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-20 14:44:56,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 767 states. [2023-12-20 14:44:56,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 767 to 566. [2023-12-20 14:44:56,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 509 states have (on average 1.6345776031434185) internal successors, (832), 512 states have internal predecessors, (832), 43 states have call successors, (43), 13 states have call predecessors, (43), 13 states have return successors, (44), 41 states have call predecessors, (44), 41 states have call successors, (44) [2023-12-20 14:44:56,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 919 transitions. [2023-12-20 14:44:56,914 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 919 transitions. Word has length 132 [2023-12-20 14:44:56,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:44:56,914 INFO L495 AbstractCegarLoop]: Abstraction has 566 states and 919 transitions. [2023-12-20 14:44:56,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:44:56,914 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 919 transitions. [2023-12-20 14:44:56,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-20 14:44:56,915 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:44:56,915 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] [2023-12-20 14:44:56,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-20 14:44:56,915 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:44:56,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:44:56,916 INFO L85 PathProgramCache]: Analyzing trace with hash -209297331, now seen corresponding path program 1 times [2023-12-20 14:44:56,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:44:56,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475467197] [2023-12-20 14:44:56,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:44:56,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:44:56,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:44:56,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:44:56,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:44:57,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-20 14:44:57,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:44:57,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-20 14:44:57,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:44:57,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-20 14:44:57,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:44:57,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-20 14:44:57,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:44:57,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:44:57,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:44:57,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475467197] [2023-12-20 14:44:57,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475467197] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:44:57,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:44:57,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:44:57,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315222345] [2023-12-20 14:44:57,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:44:57,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:44:57,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:44:57,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:44:57,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:44:57,084 INFO L87 Difference]: Start difference. First operand 566 states and 919 transitions. Second operand has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:44:59,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:44:59,482 INFO L93 Difference]: Finished difference Result 1711 states and 2821 transitions. [2023-12-20 14:44:59,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 14:44:59,482 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 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 132 [2023-12-20 14:44:59,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:44:59,486 INFO L225 Difference]: With dead ends: 1711 [2023-12-20 14:44:59,486 INFO L226 Difference]: Without dead ends: 1161 [2023-12-20 14:44:59,488 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-20 14:44:59,488 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 1270 mSDsluCounter, 903 mSDsCounter, 0 mSdLazyCounter, 2543 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1286 SdHoareTripleChecker+Valid, 1174 SdHoareTripleChecker+Invalid, 2632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 2543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-20 14:44:59,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1286 Valid, 1174 Invalid, 2632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 2543 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-20 14:44:59,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1161 states. [2023-12-20 14:44:59,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1161 to 826. [2023-12-20 14:44:59,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 826 states, 744 states have (on average 1.6276881720430108) internal successors, (1211), 748 states have internal predecessors, (1211), 61 states have call successors, (61), 19 states have call predecessors, (61), 20 states have return successors, (64), 60 states have call predecessors, (64), 59 states have call successors, (64) [2023-12-20 14:44:59,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 826 states to 826 states and 1336 transitions. [2023-12-20 14:44:59,521 INFO L78 Accepts]: Start accepts. Automaton has 826 states and 1336 transitions. Word has length 132 [2023-12-20 14:44:59,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:44:59,522 INFO L495 AbstractCegarLoop]: Abstraction has 826 states and 1336 transitions. [2023-12-20 14:44:59,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:44:59,522 INFO L276 IsEmpty]: Start isEmpty. Operand 826 states and 1336 transitions. [2023-12-20 14:44:59,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-20 14:44:59,523 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:44:59,523 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:44:59,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-20 14:44:59,524 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:44:59,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:44:59,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1517847631, now seen corresponding path program 1 times [2023-12-20 14:44:59,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:44:59,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4746549] [2023-12-20 14:44:59,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:44:59,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:44:59,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:44:59,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:44:59,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:44:59,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-20 14:44:59,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:44:59,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-20 14:44:59,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:44:59,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-20 14:44:59,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:44:59,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-20 14:44:59,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:44:59,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:44:59,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:44:59,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4746549] [2023-12-20 14:44:59,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4746549] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:44:59,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:44:59,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:44:59,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427464990] [2023-12-20 14:44:59,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:44:59,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:44:59,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:44:59,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:44:59,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:44:59,784 INFO L87 Difference]: Start difference. First operand 826 states and 1336 transitions. Second operand has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:45:02,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:45:02,128 INFO L93 Difference]: Finished difference Result 2700 states and 4444 transitions. [2023-12-20 14:45:02,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 14:45:02,129 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 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 132 [2023-12-20 14:45:02,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:45:02,137 INFO L225 Difference]: With dead ends: 2700 [2023-12-20 14:45:02,137 INFO L226 Difference]: Without dead ends: 1890 [2023-12-20 14:45:02,139 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 [2023-12-20 14:45:02,140 INFO L413 NwaCegarLoop]: 393 mSDtfsCounter, 1199 mSDsluCounter, 1301 mSDsCounter, 0 mSdLazyCounter, 2905 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1215 SdHoareTripleChecker+Valid, 1694 SdHoareTripleChecker+Invalid, 2966 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 2905 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-20 14:45:02,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1215 Valid, 1694 Invalid, 2966 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 2905 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-20 14:45:02,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1890 states. [2023-12-20 14:45:02,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1890 to 1347. [2023-12-20 14:45:02,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1347 states, 1215 states have (on average 1.6213991769547325) internal successors, (1970), 1221 states have internal predecessors, (1970), 97 states have call successors, (97), 31 states have call predecessors, (97), 34 states have return successors, (108), 98 states have call predecessors, (108), 95 states have call successors, (108) [2023-12-20 14:45:02,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1347 states to 1347 states and 2175 transitions. [2023-12-20 14:45:02,222 INFO L78 Accepts]: Start accepts. Automaton has 1347 states and 2175 transitions. Word has length 132 [2023-12-20 14:45:02,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:45:02,222 INFO L495 AbstractCegarLoop]: Abstraction has 1347 states and 2175 transitions. [2023-12-20 14:45:02,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:45:02,222 INFO L276 IsEmpty]: Start isEmpty. Operand 1347 states and 2175 transitions. [2023-12-20 14:45:02,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-20 14:45:02,223 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:45:02,223 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:45:02,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-20 14:45:02,223 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:45:02,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:45:02,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1989203981, now seen corresponding path program 1 times [2023-12-20 14:45:02,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:45:02,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592718821] [2023-12-20 14:45:02,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:45:02,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:45:02,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:02,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:45:02,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:02,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-20 14:45:02,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:02,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-20 14:45:02,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:02,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-20 14:45:02,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:02,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-20 14:45:02,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:02,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:45:02,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:45:02,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592718821] [2023-12-20 14:45:02,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592718821] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:45:02,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:45:02,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:45:02,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35981985] [2023-12-20 14:45:02,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:45:02,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:45:02,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:45:02,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:45:02,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:45:02,372 INFO L87 Difference]: Start difference. First operand 1347 states and 2175 transitions. Second operand has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:45:03,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:45:03,446 INFO L93 Difference]: Finished difference Result 3209 states and 5274 transitions. [2023-12-20 14:45:03,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 14:45:03,447 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 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 132 [2023-12-20 14:45:03,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:45:03,454 INFO L225 Difference]: With dead ends: 3209 [2023-12-20 14:45:03,454 INFO L226 Difference]: Without dead ends: 1878 [2023-12-20 14:45:03,457 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 [2023-12-20 14:45:03,458 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 987 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 1335 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1004 SdHoareTripleChecker+Valid, 723 SdHoareTripleChecker+Invalid, 1423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-20 14:45:03,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1004 Valid, 723 Invalid, 1423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 1335 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-20 14:45:03,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1878 states. [2023-12-20 14:45:03,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1878 to 1347. [2023-12-20 14:45:03,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1347 states, 1215 states have (on average 1.617283950617284) internal successors, (1965), 1221 states have internal predecessors, (1965), 97 states have call successors, (97), 31 states have call predecessors, (97), 34 states have return successors, (108), 98 states have call predecessors, (108), 95 states have call successors, (108) [2023-12-20 14:45:03,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1347 states to 1347 states and 2170 transitions. [2023-12-20 14:45:03,525 INFO L78 Accepts]: Start accepts. Automaton has 1347 states and 2170 transitions. Word has length 132 [2023-12-20 14:45:03,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:45:03,525 INFO L495 AbstractCegarLoop]: Abstraction has 1347 states and 2170 transitions. [2023-12-20 14:45:03,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:45:03,525 INFO L276 IsEmpty]: Start isEmpty. Operand 1347 states and 2170 transitions. [2023-12-20 14:45:03,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-20 14:45:03,527 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:45:03,527 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] [2023-12-20 14:45:03,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-20 14:45:03,527 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:45:03,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:45:03,527 INFO L85 PathProgramCache]: Analyzing trace with hash 341841039, now seen corresponding path program 1 times [2023-12-20 14:45:03,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:45:03,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113250121] [2023-12-20 14:45:03,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:45:03,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:45:03,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:03,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:45:03,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:03,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-20 14:45:03,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:03,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-20 14:45:03,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:03,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-20 14:45:03,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:03,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-20 14:45:03,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:03,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:45:03,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:45:03,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113250121] [2023-12-20 14:45:03,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113250121] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:45:03,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:45:03,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:45:03,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851850213] [2023-12-20 14:45:03,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:45:03,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:45:03,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:45:03,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:45:03,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:45:03,725 INFO L87 Difference]: Start difference. First operand 1347 states and 2170 transitions. Second operand has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:45:04,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:45:04,993 INFO L93 Difference]: Finished difference Result 3203 states and 5248 transitions. [2023-12-20 14:45:04,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 14:45:04,993 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 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 132 [2023-12-20 14:45:04,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:45:05,000 INFO L225 Difference]: With dead ends: 3203 [2023-12-20 14:45:05,001 INFO L226 Difference]: Without dead ends: 1872 [2023-12-20 14:45:05,004 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 [2023-12-20 14:45:05,004 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 864 mSDsluCounter, 650 mSDsCounter, 0 mSdLazyCounter, 1467 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 881 SdHoareTripleChecker+Valid, 862 SdHoareTripleChecker+Invalid, 1530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 1467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:45:05,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [881 Valid, 862 Invalid, 1530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 1467 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-20 14:45:05,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1872 states. [2023-12-20 14:45:05,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1872 to 1347. [2023-12-20 14:45:05,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1347 states, 1215 states have (on average 1.6131687242798354) internal successors, (1960), 1221 states have internal predecessors, (1960), 97 states have call successors, (97), 31 states have call predecessors, (97), 34 states have return successors, (108), 98 states have call predecessors, (108), 95 states have call successors, (108) [2023-12-20 14:45:05,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1347 states to 1347 states and 2165 transitions. [2023-12-20 14:45:05,063 INFO L78 Accepts]: Start accepts. Automaton has 1347 states and 2165 transitions. Word has length 132 [2023-12-20 14:45:05,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:45:05,063 INFO L495 AbstractCegarLoop]: Abstraction has 1347 states and 2165 transitions. [2023-12-20 14:45:05,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:45:05,064 INFO L276 IsEmpty]: Start isEmpty. Operand 1347 states and 2165 transitions. [2023-12-20 14:45:05,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-20 14:45:05,064 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:45:05,065 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] [2023-12-20 14:45:05,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-20 14:45:05,065 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:45:05,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:45:05,065 INFO L85 PathProgramCache]: Analyzing trace with hash -1789509683, now seen corresponding path program 1 times [2023-12-20 14:45:05,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:45:05,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627858673] [2023-12-20 14:45:05,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:45:05,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:45:05,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:05,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:45:05,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:05,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-20 14:45:05,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:05,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-20 14:45:05,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:05,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-20 14:45:05,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:05,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-20 14:45:05,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:05,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:45:05,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:45:05,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627858673] [2023-12-20 14:45:05,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627858673] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:45:05,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:45:05,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:45:05,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122890167] [2023-12-20 14:45:05,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:45:05,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:45:05,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:45:05,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:45:05,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:45:05,225 INFO L87 Difference]: Start difference. First operand 1347 states and 2165 transitions. Second operand has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:45:06,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:45:06,396 INFO L93 Difference]: Finished difference Result 3196 states and 5220 transitions. [2023-12-20 14:45:06,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 14:45:06,396 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 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 132 [2023-12-20 14:45:06,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:45:06,403 INFO L225 Difference]: With dead ends: 3196 [2023-12-20 14:45:06,403 INFO L226 Difference]: Without dead ends: 1865 [2023-12-20 14:45:06,406 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 [2023-12-20 14:45:06,406 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 867 mSDsluCounter, 650 mSDsCounter, 0 mSdLazyCounter, 1446 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 884 SdHoareTripleChecker+Valid, 862 SdHoareTripleChecker+Invalid, 1509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 1446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-20 14:45:06,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [884 Valid, 862 Invalid, 1509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 1446 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-20 14:45:06,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1865 states. [2023-12-20 14:45:06,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1865 to 1347. [2023-12-20 14:45:06,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1347 states, 1215 states have (on average 1.6090534979423867) internal successors, (1955), 1221 states have internal predecessors, (1955), 97 states have call successors, (97), 31 states have call predecessors, (97), 34 states have return successors, (108), 98 states have call predecessors, (108), 95 states have call successors, (108) [2023-12-20 14:45:06,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1347 states to 1347 states and 2160 transitions. [2023-12-20 14:45:06,485 INFO L78 Accepts]: Start accepts. Automaton has 1347 states and 2160 transitions. Word has length 132 [2023-12-20 14:45:06,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:45:06,485 INFO L495 AbstractCegarLoop]: Abstraction has 1347 states and 2160 transitions. [2023-12-20 14:45:06,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:45:06,485 INFO L276 IsEmpty]: Start isEmpty. Operand 1347 states and 2160 transitions. [2023-12-20 14:45:06,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-20 14:45:06,486 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:45:06,486 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:45:06,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-20 14:45:06,486 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:45:06,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:45:06,487 INFO L85 PathProgramCache]: Analyzing trace with hash 1466873039, now seen corresponding path program 1 times [2023-12-20 14:45:06,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:45:06,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468601] [2023-12-20 14:45:06,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:45:06,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:45:06,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:06,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:45:06,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:06,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-20 14:45:06,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:06,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-20 14:45:06,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:06,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-20 14:45:06,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:06,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-20 14:45:06,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:06,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:45:06,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:45:06,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468601] [2023-12-20 14:45:06,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468601] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:45:06,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:45:06,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:45:06,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462710657] [2023-12-20 14:45:06,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:45:06,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:45:06,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:45:06,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:45:06,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:45:06,625 INFO L87 Difference]: Start difference. First operand 1347 states and 2160 transitions. Second operand has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:45:07,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:45:07,691 INFO L93 Difference]: Finished difference Result 3184 states and 5182 transitions. [2023-12-20 14:45:07,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 14:45:07,692 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 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 132 [2023-12-20 14:45:07,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:45:07,697 INFO L225 Difference]: With dead ends: 3184 [2023-12-20 14:45:07,697 INFO L226 Difference]: Without dead ends: 1853 [2023-12-20 14:45:07,699 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 [2023-12-20 14:45:07,700 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 985 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 1282 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1002 SdHoareTripleChecker+Valid, 723 SdHoareTripleChecker+Invalid, 1370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-20 14:45:07,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1002 Valid, 723 Invalid, 1370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 1282 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-20 14:45:07,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1853 states. [2023-12-20 14:45:07,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1853 to 1347. [2023-12-20 14:45:07,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1347 states, 1215 states have (on average 1.6049382716049383) internal successors, (1950), 1221 states have internal predecessors, (1950), 97 states have call successors, (97), 31 states have call predecessors, (97), 34 states have return successors, (108), 98 states have call predecessors, (108), 95 states have call successors, (108) [2023-12-20 14:45:07,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1347 states to 1347 states and 2155 transitions. [2023-12-20 14:45:07,773 INFO L78 Accepts]: Start accepts. Automaton has 1347 states and 2155 transitions. Word has length 132 [2023-12-20 14:45:07,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:45:07,774 INFO L495 AbstractCegarLoop]: Abstraction has 1347 states and 2155 transitions. [2023-12-20 14:45:07,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:45:07,774 INFO L276 IsEmpty]: Start isEmpty. Operand 1347 states and 2155 transitions. [2023-12-20 14:45:07,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-20 14:45:07,775 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:45:07,775 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] [2023-12-20 14:45:07,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-20 14:45:07,776 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:45:07,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:45:07,776 INFO L85 PathProgramCache]: Analyzing trace with hash -674987439, now seen corresponding path program 1 times [2023-12-20 14:45:07,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:45:07,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058539981] [2023-12-20 14:45:07,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:45:07,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:45:07,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:07,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:45:07,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:07,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-20 14:45:07,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:07,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-20 14:45:07,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:07,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-20 14:45:07,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:07,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-20 14:45:07,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:07,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:45:07,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:45:07,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058539981] [2023-12-20 14:45:07,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058539981] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:45:07,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:45:07,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:45:07,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952850594] [2023-12-20 14:45:07,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:45:07,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:45:07,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:45:07,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:45:07,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:45:07,920 INFO L87 Difference]: Start difference. First operand 1347 states and 2155 transitions. Second operand has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:45:10,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:45:10,267 INFO L93 Difference]: Finished difference Result 4564 states and 7389 transitions. [2023-12-20 14:45:10,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 14:45:10,277 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 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 132 [2023-12-20 14:45:10,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:45:10,288 INFO L225 Difference]: With dead ends: 4564 [2023-12-20 14:45:10,288 INFO L226 Difference]: Without dead ends: 3233 [2023-12-20 14:45:10,309 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 [2023-12-20 14:45:10,310 INFO L413 NwaCegarLoop]: 393 mSDtfsCounter, 1166 mSDsluCounter, 1301 mSDsCounter, 0 mSdLazyCounter, 2781 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1182 SdHoareTripleChecker+Valid, 1694 SdHoareTripleChecker+Invalid, 2842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 2781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-20 14:45:10,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1182 Valid, 1694 Invalid, 2842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 2781 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-20 14:45:10,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3233 states. [2023-12-20 14:45:10,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3233 to 2412. [2023-12-20 14:45:10,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2412 states, 2180 states have (on average 1.5977064220183486) internal successors, (3483), 2190 states have internal predecessors, (3483), 169 states have call successors, (169), 55 states have call predecessors, (169), 62 states have return successors, (202), 174 states have call predecessors, (202), 167 states have call successors, (202) [2023-12-20 14:45:10,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2412 states to 2412 states and 3854 transitions. [2023-12-20 14:45:10,482 INFO L78 Accepts]: Start accepts. Automaton has 2412 states and 3854 transitions. Word has length 132 [2023-12-20 14:45:10,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:45:10,482 INFO L495 AbstractCegarLoop]: Abstraction has 2412 states and 3854 transitions. [2023-12-20 14:45:10,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:45:10,483 INFO L276 IsEmpty]: Start isEmpty. Operand 2412 states and 3854 transitions. [2023-12-20 14:45:10,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-20 14:45:10,485 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:45:10,485 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] [2023-12-20 14:45:10,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-20 14:45:10,485 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:45:10,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:45:10,486 INFO L85 PathProgramCache]: Analyzing trace with hash -1298269041, now seen corresponding path program 1 times [2023-12-20 14:45:10,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:45:10,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169120505] [2023-12-20 14:45:10,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:45:10,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:45:10,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:10,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:45:10,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:10,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-20 14:45:10,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:10,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-20 14:45:10,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:10,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-20 14:45:10,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:10,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-20 14:45:10,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:10,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:45:10,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:45:10,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169120505] [2023-12-20 14:45:10,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169120505] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:45:10,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:45:10,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-20 14:45:10,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17965504] [2023-12-20 14:45:10,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:45:10,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-20 14:45:10,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:45:10,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-20 14:45:10,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-20 14:45:10,686 INFO L87 Difference]: Start difference. First operand 2412 states and 3854 transitions. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 7 states have internal predecessors, (121), 2 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:45:13,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:45:13,822 INFO L93 Difference]: Finished difference Result 9071 states and 14795 transitions. [2023-12-20 14:45:13,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-20 14:45:13,823 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 7 states have internal predecessors, (121), 2 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 132 [2023-12-20 14:45:13,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:45:13,845 INFO L225 Difference]: With dead ends: 9071 [2023-12-20 14:45:13,845 INFO L226 Difference]: Without dead ends: 6675 [2023-12-20 14:45:13,853 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=132, Invalid=518, Unknown=0, NotChecked=0, Total=650 [2023-12-20 14:45:13,853 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 1534 mSDsluCounter, 1314 mSDsCounter, 0 mSdLazyCounter, 3188 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1552 SdHoareTripleChecker+Valid, 1548 SdHoareTripleChecker+Invalid, 3288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 3188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-20 14:45:13,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1552 Valid, 1548 Invalid, 3288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 3188 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-20 14:45:13,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6675 states. [2023-12-20 14:45:14,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6675 to 4573. [2023-12-20 14:45:14,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4573 states, 4141 states have (on average 1.5872977541656605) internal successors, (6573), 4159 states have internal predecessors, (6573), 313 states have call successors, (313), 103 states have call predecessors, (313), 118 states have return successors, (408), 326 states have call predecessors, (408), 311 states have call successors, (408) [2023-12-20 14:45:14,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4573 states to 4573 states and 7294 transitions. [2023-12-20 14:45:14,058 INFO L78 Accepts]: Start accepts. Automaton has 4573 states and 7294 transitions. Word has length 132 [2023-12-20 14:45:14,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:45:14,058 INFO L495 AbstractCegarLoop]: Abstraction has 4573 states and 7294 transitions. [2023-12-20 14:45:14,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 7 states have internal predecessors, (121), 2 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:45:14,059 INFO L276 IsEmpty]: Start isEmpty. Operand 4573 states and 7294 transitions. [2023-12-20 14:45:14,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-20 14:45:14,061 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:45:14,061 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] [2023-12-20 14:45:14,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-20 14:45:14,062 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:45:14,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:45:14,062 INFO L85 PathProgramCache]: Analyzing trace with hash -1102926769, now seen corresponding path program 1 times [2023-12-20 14:45:14,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:45:14,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23379614] [2023-12-20 14:45:14,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:45:14,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:45:14,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:14,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:45:14,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:14,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-20 14:45:14,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:14,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-20 14:45:14,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:14,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-20 14:45:14,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:14,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-20 14:45:14,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:14,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:45:14,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:45:14,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23379614] [2023-12-20 14:45:14,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23379614] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:45:14,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:45:14,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:45:14,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060834132] [2023-12-20 14:45:14,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:45:14,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:45:14,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:45:14,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:45:14,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:45:14,197 INFO L87 Difference]: Start difference. First operand 4573 states and 7294 transitions. Second operand has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:45:17,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:45:17,101 INFO L93 Difference]: Finished difference Result 18020 states and 29036 transitions. [2023-12-20 14:45:17,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 14:45:17,102 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 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 132 [2023-12-20 14:45:17,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:45:17,157 INFO L225 Difference]: With dead ends: 18020 [2023-12-20 14:45:17,157 INFO L226 Difference]: Without dead ends: 13463 [2023-12-20 14:45:17,174 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 [2023-12-20 14:45:17,175 INFO L413 NwaCegarLoop]: 391 mSDtfsCounter, 1493 mSDsluCounter, 1296 mSDsCounter, 0 mSdLazyCounter, 2745 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1519 SdHoareTripleChecker+Valid, 1687 SdHoareTripleChecker+Invalid, 2809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 2745 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-20 14:45:17,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1519 Valid, 1687 Invalid, 2809 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 2745 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-20 14:45:17,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13463 states. [2023-12-20 14:45:17,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13463 to 8842. [2023-12-20 14:45:17,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8842 states, 8026 states have (on average 1.5852230251682033) internal successors, (12723), 8060 states have internal predecessors, (12723), 585 states have call successors, (585), 199 states have call predecessors, (585), 230 states have return successors, (858), 614 states have call predecessors, (858), 583 states have call successors, (858) [2023-12-20 14:45:17,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8842 states to 8842 states and 14166 transitions. [2023-12-20 14:45:17,754 INFO L78 Accepts]: Start accepts. Automaton has 8842 states and 14166 transitions. Word has length 132 [2023-12-20 14:45:17,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:45:17,754 INFO L495 AbstractCegarLoop]: Abstraction has 8842 states and 14166 transitions. [2023-12-20 14:45:17,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:45:17,754 INFO L276 IsEmpty]: Start isEmpty. Operand 8842 states and 14166 transitions. [2023-12-20 14:45:17,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-20 14:45:17,760 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:45:17,761 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] [2023-12-20 14:45:17,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-20 14:45:17,761 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:45:17,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:45:17,761 INFO L85 PathProgramCache]: Analyzing trace with hash 286367245, now seen corresponding path program 1 times [2023-12-20 14:45:17,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:45:17,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165735925] [2023-12-20 14:45:17,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:45:17,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:45:17,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:17,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:45:17,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:17,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-20 14:45:17,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:17,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-20 14:45:17,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:17,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-20 14:45:17,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:17,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-20 14:45:17,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:17,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:45:17,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:45:17,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165735925] [2023-12-20 14:45:17,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165735925] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:45:17,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:45:17,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:45:17,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862301353] [2023-12-20 14:45:17,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:45:17,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:45:17,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:45:17,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:45:17,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:45:17,977 INFO L87 Difference]: Start difference. First operand 8842 states and 14166 transitions. Second operand has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:45:21,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:45:21,140 INFO L93 Difference]: Finished difference Result 34807 states and 56318 transitions. [2023-12-20 14:45:21,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 14:45:21,141 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 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 132 [2023-12-20 14:45:21,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:45:21,230 INFO L225 Difference]: With dead ends: 34807 [2023-12-20 14:45:21,231 INFO L226 Difference]: Without dead ends: 25981 [2023-12-20 14:45:21,262 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 [2023-12-20 14:45:21,263 INFO L413 NwaCegarLoop]: 390 mSDtfsCounter, 1236 mSDsluCounter, 1293 mSDsCounter, 0 mSdLazyCounter, 3240 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1251 SdHoareTripleChecker+Valid, 1683 SdHoareTripleChecker+Invalid, 3303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 3240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:45:21,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1251 Valid, 1683 Invalid, 3303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 3240 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-20 14:45:21,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25981 states. [2023-12-20 14:45:22,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25981 to 17059. [2023-12-20 14:45:22,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17059 states, 15491 states have (on average 1.5800787554063649) internal successors, (24477), 15557 states have internal predecessors, (24477), 1113 states have call successors, (1113), 391 states have call predecessors, (1113), 454 states have return successors, (1904), 1174 states have call predecessors, (1904), 1111 states have call successors, (1904) [2023-12-20 14:45:22,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17059 states to 17059 states and 27494 transitions. [2023-12-20 14:45:22,171 INFO L78 Accepts]: Start accepts. Automaton has 17059 states and 27494 transitions. Word has length 132 [2023-12-20 14:45:22,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:45:22,171 INFO L495 AbstractCegarLoop]: Abstraction has 17059 states and 27494 transitions. [2023-12-20 14:45:22,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:45:22,171 INFO L276 IsEmpty]: Start isEmpty. Operand 17059 states and 27494 transitions. [2023-12-20 14:45:22,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-20 14:45:22,180 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:45:22,180 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] [2023-12-20 14:45:22,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-20 14:45:22,180 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:45:22,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:45:22,181 INFO L85 PathProgramCache]: Analyzing trace with hash -1747026801, now seen corresponding path program 1 times [2023-12-20 14:45:22,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:45:22,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713804854] [2023-12-20 14:45:22,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:45:22,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:45:22,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:22,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:45:22,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:22,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-20 14:45:22,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:22,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-20 14:45:22,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:22,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-20 14:45:22,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:22,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-20 14:45:22,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:22,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:45:22,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:45:22,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713804854] [2023-12-20 14:45:22,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713804854] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:45:22,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:45:22,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:45:22,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72209957] [2023-12-20 14:45:22,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:45:22,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:45:22,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:45:22,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:45:22,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:45:22,323 INFO L87 Difference]: Start difference. First operand 17059 states and 27494 transitions. Second operand has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:45:26,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:45:26,116 INFO L93 Difference]: Finished difference Result 66974 states and 108972 transitions. [2023-12-20 14:45:26,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 14:45:26,117 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 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 132 [2023-12-20 14:45:26,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:45:26,271 INFO L225 Difference]: With dead ends: 66974 [2023-12-20 14:45:26,272 INFO L226 Difference]: Without dead ends: 49931 [2023-12-20 14:45:26,309 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 [2023-12-20 14:45:26,310 INFO L413 NwaCegarLoop]: 391 mSDtfsCounter, 1421 mSDsluCounter, 1296 mSDsCounter, 0 mSdLazyCounter, 2719 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1447 SdHoareTripleChecker+Valid, 1687 SdHoareTripleChecker+Invalid, 2783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 2719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-20 14:45:26,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1447 Valid, 1687 Invalid, 2783 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 2719 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-20 14:45:26,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49931 states. [2023-12-20 14:45:27,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49931 to 33812. [2023-12-20 14:45:27,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33812 states, 30772 states have (on average 1.5801052905238528) internal successors, (48623), 30902 states have internal predecessors, (48623), 2137 states have call successors, (2137), 775 states have call predecessors, (2137), 902 states have return successors, (4450), 2262 states have call predecessors, (4450), 2135 states have call successors, (4450) [2023-12-20 14:45:27,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33812 states to 33812 states and 55210 transitions. [2023-12-20 14:45:27,986 INFO L78 Accepts]: Start accepts. Automaton has 33812 states and 55210 transitions. Word has length 132 [2023-12-20 14:45:27,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:45:27,986 INFO L495 AbstractCegarLoop]: Abstraction has 33812 states and 55210 transitions. [2023-12-20 14:45:27,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:45:27,987 INFO L276 IsEmpty]: Start isEmpty. Operand 33812 states and 55210 transitions. [2023-12-20 14:45:28,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-20 14:45:28,004 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:45:28,004 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] [2023-12-20 14:45:28,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-20 14:45:28,004 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:45:28,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:45:28,005 INFO L85 PathProgramCache]: Analyzing trace with hash 681231821, now seen corresponding path program 1 times [2023-12-20 14:45:28,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:45:28,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597447342] [2023-12-20 14:45:28,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:45:28,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:45:28,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:28,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:45:28,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:28,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-20 14:45:28,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:28,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-20 14:45:28,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:28,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-20 14:45:28,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:28,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-20 14:45:28,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:28,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:45:28,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:45:28,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597447342] [2023-12-20 14:45:28,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597447342] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:45:28,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:45:28,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:45:28,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061239431] [2023-12-20 14:45:28,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:45:28,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:45:28,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:45:28,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:45:28,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:45:28,156 INFO L87 Difference]: Start difference. First operand 33812 states and 55210 transitions. Second operand has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:45:33,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:45:33,400 INFO L93 Difference]: Finished difference Result 130221 states and 214946 transitions. [2023-12-20 14:45:33,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 14:45:33,401 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 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 132 [2023-12-20 14:45:33,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:45:33,719 INFO L225 Difference]: With dead ends: 130221 [2023-12-20 14:45:33,719 INFO L226 Difference]: Without dead ends: 96425 [2023-12-20 14:45:33,816 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 [2023-12-20 14:45:33,817 INFO L413 NwaCegarLoop]: 391 mSDtfsCounter, 1223 mSDsluCounter, 1296 mSDsCounter, 0 mSdLazyCounter, 3112 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1238 SdHoareTripleChecker+Valid, 1687 SdHoareTripleChecker+Invalid, 3175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 3112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:45:33,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1238 Valid, 1687 Invalid, 3175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 3112 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-20 14:45:33,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96425 states. [2023-12-20 14:45:37,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96425 to 67317. [2023-12-20 14:45:37,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67317 states, 61397 states have (on average 1.5805495382510546) internal successors, (97041), 61655 states have internal predecessors, (97041), 4121 states have call successors, (4121), 1543 states have call predecessors, (4121), 1798 states have return successors, (10936), 4374 states have call predecessors, (10936), 4119 states have call successors, (10936) [2023-12-20 14:45:37,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67317 states to 67317 states and 112098 transitions. [2023-12-20 14:45:37,683 INFO L78 Accepts]: Start accepts. Automaton has 67317 states and 112098 transitions. Word has length 132 [2023-12-20 14:45:37,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:45:37,683 INFO L495 AbstractCegarLoop]: Abstraction has 67317 states and 112098 transitions. [2023-12-20 14:45:37,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:45:37,683 INFO L276 IsEmpty]: Start isEmpty. Operand 67317 states and 112098 transitions. [2023-12-20 14:45:37,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-20 14:45:37,719 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:45:37,719 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] [2023-12-20 14:45:37,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-20 14:45:37,719 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:45:37,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:45:37,719 INFO L85 PathProgramCache]: Analyzing trace with hash -625910577, now seen corresponding path program 1 times [2023-12-20 14:45:37,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:45:37,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857840350] [2023-12-20 14:45:37,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:45:37,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:45:37,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:37,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:45:37,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:37,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-20 14:45:37,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:37,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-20 14:45:37,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:37,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-20 14:45:37,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:37,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-20 14:45:37,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:37,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:45:37,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:45:37,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857840350] [2023-12-20 14:45:37,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857840350] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:45:37,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:45:37,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:45:37,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829276351] [2023-12-20 14:45:37,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:45:37,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:45:37,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:45:37,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:45:37,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:45:37,865 INFO L87 Difference]: Start difference. First operand 67317 states and 112098 transitions. Second operand has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:45:42,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:45:42,232 INFO L93 Difference]: Finished difference Result 153962 states and 262207 transitions. [2023-12-20 14:45:42,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 14:45:42,233 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 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 132 [2023-12-20 14:45:42,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:45:42,554 INFO L225 Difference]: With dead ends: 153962 [2023-12-20 14:45:42,555 INFO L226 Difference]: Without dead ends: 86661 [2023-12-20 14:45:42,729 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 [2023-12-20 14:45:42,729 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 870 mSDsluCounter, 649 mSDsCounter, 0 mSdLazyCounter, 1334 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 887 SdHoareTripleChecker+Valid, 861 SdHoareTripleChecker+Invalid, 1399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:45:42,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [887 Valid, 861 Invalid, 1399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1334 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-20 14:45:42,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86661 states. [2023-12-20 14:45:46,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86661 to 67317. [2023-12-20 14:45:46,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67317 states, 61397 states have (on average 1.576363665977165) internal successors, (96784), 61655 states have internal predecessors, (96784), 4121 states have call successors, (4121), 1543 states have call predecessors, (4121), 1798 states have return successors, (10936), 4374 states have call predecessors, (10936), 4119 states have call successors, (10936) [2023-12-20 14:45:46,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67317 states to 67317 states and 111841 transitions. [2023-12-20 14:45:46,350 INFO L78 Accepts]: Start accepts. Automaton has 67317 states and 111841 transitions. Word has length 132 [2023-12-20 14:45:46,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:45:46,350 INFO L495 AbstractCegarLoop]: Abstraction has 67317 states and 111841 transitions. [2023-12-20 14:45:46,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:45:46,350 INFO L276 IsEmpty]: Start isEmpty. Operand 67317 states and 111841 transitions. [2023-12-20 14:45:46,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-20 14:45:46,382 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:45:46,383 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] [2023-12-20 14:45:46,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-20 14:45:46,383 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:45:46,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:45:46,383 INFO L85 PathProgramCache]: Analyzing trace with hash 405130321, now seen corresponding path program 1 times [2023-12-20 14:45:46,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:45:46,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701642828] [2023-12-20 14:45:46,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:45:46,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:45:46,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:46,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:45:46,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:46,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-20 14:45:46,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:46,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-20 14:45:46,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:46,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-20 14:45:46,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:46,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-20 14:45:46,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:45:46,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:45:46,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:45:46,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701642828] [2023-12-20 14:45:46,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701642828] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:45:46,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:45:46,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:45:46,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161920715] [2023-12-20 14:45:46,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:45:46,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:45:46,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:45:46,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:45:46,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:45:46,668 INFO L87 Difference]: Start difference. First operand 67317 states and 111841 transitions. Second operand has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:45:54,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:45:54,574 INFO L93 Difference]: Finished difference Result 250184 states and 420684 transitions. [2023-12-20 14:45:54,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 14:45:54,574 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 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 132 [2023-12-20 14:45:54,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:45:55,278 INFO L225 Difference]: With dead ends: 250184 [2023-12-20 14:45:55,278 INFO L226 Difference]: Without dead ends: 182883 [2023-12-20 14:45:55,418 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 [2023-12-20 14:45:55,418 INFO L413 NwaCegarLoop]: 391 mSDtfsCounter, 1184 mSDsluCounter, 1296 mSDsCounter, 0 mSdLazyCounter, 2928 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1199 SdHoareTripleChecker+Valid, 1687 SdHoareTripleChecker+Invalid, 2991 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 2928 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-20 14:45:55,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1199 Valid, 1687 Invalid, 2991 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 2928 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-20 14:45:55,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182883 states. [2023-12-20 14:46:01,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182883 to 134840. [2023-12-20 14:46:02,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134840 states, 123288 states have (on average 1.5767146843163973) internal successors, (194390), 123802 states have internal predecessors, (194390), 7961 states have call successors, (7961), 3079 states have call predecessors, (7961), 3590 states have return successors, (28154), 8470 states have call predecessors, (28154), 7959 states have call successors, (28154) [2023-12-20 14:46:02,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134840 states to 134840 states and 230505 transitions. [2023-12-20 14:46:02,795 INFO L78 Accepts]: Start accepts. Automaton has 134840 states and 230505 transitions. Word has length 132 [2023-12-20 14:46:02,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:46:02,795 INFO L495 AbstractCegarLoop]: Abstraction has 134840 states and 230505 transitions. [2023-12-20 14:46:02,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:46:02,795 INFO L276 IsEmpty]: Start isEmpty. Operand 134840 states and 230505 transitions. [2023-12-20 14:46:02,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-20 14:46:02,853 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:46:02,853 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] [2023-12-20 14:46:02,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-20 14:46:02,854 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:46:02,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:46:02,854 INFO L85 PathProgramCache]: Analyzing trace with hash -1501272945, now seen corresponding path program 1 times [2023-12-20 14:46:02,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:46:02,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019256663] [2023-12-20 14:46:02,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:46:02,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:46:02,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:02,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:46:02,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:02,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-20 14:46:02,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:02,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-20 14:46:02,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:02,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-20 14:46:02,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:02,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-20 14:46:02,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:02,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:46:02,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:46:02,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019256663] [2023-12-20 14:46:02,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019256663] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:46:02,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:46:02,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:46:02,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998463420] [2023-12-20 14:46:02,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:46:02,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:46:02,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:46:02,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:46:02,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:46:02,998 INFO L87 Difference]: Start difference. First operand 134840 states and 230505 transitions. Second operand has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:46:16,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:46:16,131 INFO L93 Difference]: Finished difference Result 492425 states and 853782 transitions. [2023-12-20 14:46:16,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 14:46:16,132 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 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 132 [2023-12-20 14:46:16,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:46:17,863 INFO L225 Difference]: With dead ends: 492425 [2023-12-20 14:46:17,864 INFO L226 Difference]: Without dead ends: 357601 [2023-12-20 14:46:18,302 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-20 14:46:18,303 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 1306 mSDsluCounter, 864 mSDsCounter, 0 mSdLazyCounter, 2237 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1332 SdHoareTripleChecker+Valid, 1100 SdHoareTripleChecker+Invalid, 2335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 2237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-20 14:46:18,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1332 Valid, 1100 Invalid, 2335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 2237 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-20 14:46:18,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357601 states. [2023-12-20 14:46:31,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357601 to 269881. [2023-12-20 14:46:32,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269881 states, 247321 states have (on average 1.5773185455339418) internal successors, (390104), 248347 states have internal predecessors, (390104), 15385 states have call successors, (15385), 6151 states have call predecessors, (15385), 7174 states have return successors, (75456), 16406 states have call predecessors, (75456), 15383 states have call successors, (75456) [2023-12-20 14:46:33,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269881 states to 269881 states and 480945 transitions. [2023-12-20 14:46:33,723 INFO L78 Accepts]: Start accepts. Automaton has 269881 states and 480945 transitions. Word has length 132 [2023-12-20 14:46:33,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:46:33,724 INFO L495 AbstractCegarLoop]: Abstraction has 269881 states and 480945 transitions. [2023-12-20 14:46:33,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:46:33,724 INFO L276 IsEmpty]: Start isEmpty. Operand 269881 states and 480945 transitions. [2023-12-20 14:46:33,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-20 14:46:33,862 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:46:33,862 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] [2023-12-20 14:46:33,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-12-20 14:46:33,863 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:46:33,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:46:33,863 INFO L85 PathProgramCache]: Analyzing trace with hash 99798161, now seen corresponding path program 1 times [2023-12-20 14:46:33,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:46:33,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250287339] [2023-12-20 14:46:33,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:46:33,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:46:33,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:33,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:46:33,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:33,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-20 14:46:33,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:34,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-20 14:46:34,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:34,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-20 14:46:34,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:34,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-20 14:46:34,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:46:34,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:46:34,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:46:34,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250287339] [2023-12-20 14:46:34,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250287339] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:46:34,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:46:34,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:46:34,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453627360] [2023-12-20 14:46:34,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:46:34,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:46:34,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:46:34,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:46:34,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:46:34,016 INFO L87 Difference]: Start difference. First operand 269881 states and 480945 transitions. Second operand has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 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)