/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/systemc/token_ring.10.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 00:43:51,898 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 00:43:51,963 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 00:43:51,968 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 00:43:51,969 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 00:43:51,991 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 00:43:51,991 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 00:43:51,992 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 00:43:51,992 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 00:43:51,995 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 00:43:51,995 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 00:43:51,996 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 00:43:51,996 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 00:43:51,997 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 00:43:51,997 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 00:43:51,997 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 00:43:51,998 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 00:43:51,998 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 00:43:51,998 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 00:43:51,999 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 00:43:51,999 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 00:43:51,999 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 00:43:51,999 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 00:43:51,999 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 00:43:52,000 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 00:43:52,000 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 00:43:52,000 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 00:43:52,000 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 00:43:52,000 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 00:43:52,001 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 00:43:52,001 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 00:43:52,001 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 00:43:52,002 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 00:43:52,002 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 00:43:52,002 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 00:43:52,002 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 00:43:52,002 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 00:43:52,002 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 00:43:52,002 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 00:43:52,002 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 00:43:52,002 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 00:43:52,003 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 00:43:52,003 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 00:43:52,003 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-20 00:43:52,179 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 00:43:52,197 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 00:43:52,198 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 00:43:52,199 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 00:43:52,200 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 00:43:52,201 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/token_ring.10.cil-1.c [2023-12-20 00:43:53,151 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 00:43:53,323 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 00:43:53,323 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/systemc/token_ring.10.cil-1.c [2023-12-20 00:43:53,335 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36914427b/3276b6a446cc424e9918dc6fd9505734/FLAG61a1ac609 [2023-12-20 00:43:53,349 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36914427b/3276b6a446cc424e9918dc6fd9505734 [2023-12-20 00:43:53,351 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 00:43:53,352 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 00:43:53,353 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 00:43:53,354 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 00:43:53,357 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 00:43:53,357 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 12:43:53" (1/1) ... [2023-12-20 00:43:53,358 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4205b72e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:43:53, skipping insertion in model container [2023-12-20 00:43:53,358 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 12:43:53" (1/1) ... [2023-12-20 00:43:53,399 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 00:43:53,511 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/systemc/token_ring.10.cil-1.c[671,684] [2023-12-20 00:43:53,605 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 00:43:53,614 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 00:43:53,620 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/systemc/token_ring.10.cil-1.c[671,684] [2023-12-20 00:43:53,674 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 00:43:53,690 INFO L206 MainTranslator]: Completed translation [2023-12-20 00:43:53,691 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:43:53 WrapperNode [2023-12-20 00:43:53,691 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 00:43:53,692 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 00:43:53,692 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 00:43:53,700 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 00:43:53,704 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:43:53" (1/1) ... [2023-12-20 00:43:53,712 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:43:53" (1/1) ... [2023-12-20 00:43:53,735 INFO L138 Inliner]: procedures = 48, calls = 62, calls flagged for inlining = 31, calls inlined = 31, statements flattened = 765 [2023-12-20 00:43:53,736 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 00:43:53,736 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 00:43:53,737 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 00:43:53,737 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 00:43:53,748 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:43:53" (1/1) ... [2023-12-20 00:43:53,748 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:43:53" (1/1) ... [2023-12-20 00:43:53,751 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:43:53" (1/1) ... [2023-12-20 00:43:53,761 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 00:43:53,762 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:43:53" (1/1) ... [2023-12-20 00:43:53,762 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:43:53" (1/1) ... [2023-12-20 00:43:53,768 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:43:53" (1/1) ... [2023-12-20 00:43:53,789 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:43:53" (1/1) ... [2023-12-20 00:43:53,791 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:43:53" (1/1) ... [2023-12-20 00:43:53,792 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:43:53" (1/1) ... [2023-12-20 00:43:53,796 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 00:43:53,796 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 00:43:53,796 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 00:43:53,796 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 00:43:53,797 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:43:53" (1/1) ... [2023-12-20 00:43:53,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 00:43:53,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 00:43:53,822 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 00:43:53,830 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 00:43:53,846 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 00:43:53,846 INFO L130 BoogieDeclarations]: Found specification of procedure error [2023-12-20 00:43:53,847 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2023-12-20 00:43:53,847 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-12-20 00:43:53,847 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-12-20 00:43:53,847 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-12-20 00:43:53,848 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-12-20 00:43:53,848 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-20 00:43:53,848 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-20 00:43:53,848 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-12-20 00:43:53,849 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-12-20 00:43:53,849 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-12-20 00:43:53,849 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-12-20 00:43:53,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 00:43:53,849 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-12-20 00:43:53,849 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-12-20 00:43:53,849 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 00:43:53,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 00:43:53,938 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 00:43:53,940 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 00:43:54,495 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 00:43:54,592 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 00:43:54,593 INFO L309 CfgBuilder]: Removed 13 assume(true) statements. [2023-12-20 00:43:54,593 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 12:43:54 BoogieIcfgContainer [2023-12-20 00:43:54,593 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 00:43:54,595 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 00:43:54,595 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 00:43:54,597 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 00:43:54,597 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 12:43:53" (1/3) ... [2023-12-20 00:43:54,598 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19f02440 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 12:43:54, skipping insertion in model container [2023-12-20 00:43:54,598 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:43:53" (2/3) ... [2023-12-20 00:43:54,598 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19f02440 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 12:43:54, skipping insertion in model container [2023-12-20 00:43:54,598 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 12:43:54" (3/3) ... [2023-12-20 00:43:54,599 INFO L112 eAbstractionObserver]: Analyzing ICFG token_ring.10.cil-1.c [2023-12-20 00:43:54,610 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 00:43:54,610 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-20 00:43:54,653 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 00:43:54,658 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;@8db948, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 00:43:54,658 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-20 00:43:54,664 INFO L276 IsEmpty]: Start isEmpty. Operand has 310 states, 275 states have (on average 1.7345454545454546) internal successors, (477), 279 states have internal predecessors, (477), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-20 00:43:54,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-20 00:43:54,679 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:43:54,682 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:43:54,682 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:43:54,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:43:54,686 INFO L85 PathProgramCache]: Analyzing trace with hash -2146509589, now seen corresponding path program 1 times [2023-12-20 00:43:54,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:43:54,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899795705] [2023-12-20 00:43:54,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:43:54,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:43:54,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:54,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:43:54,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:55,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-20 00:43:55,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:55,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-20 00:43:55,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:55,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-12-20 00:43:55,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:55,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-12-20 00:43:55,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:55,132 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 00:43:55,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:43:55,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899795705] [2023-12-20 00:43:55,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899795705] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:43:55,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:43:55,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 00:43:55,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106751186] [2023-12-20 00:43:55,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:43:55,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 00:43:55,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:43:55,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 00:43:55,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 00:43:55,156 INFO L87 Difference]: Start difference. First operand has 310 states, 275 states have (on average 1.7345454545454546) internal successors, (477), 279 states have internal predecessors, (477), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) Second operand has 5 states, 5 states have (on average 26.0) internal successors, (130), 3 states have internal predecessors, (130), 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 00:43:56,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:43:56,412 INFO L93 Difference]: Finished difference Result 725 states and 1249 transitions. [2023-12-20 00:43:56,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 00:43:56,414 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 3 states have internal predecessors, (130), 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 141 [2023-12-20 00:43:56,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:43:56,423 INFO L225 Difference]: With dead ends: 725 [2023-12-20 00:43:56,423 INFO L226 Difference]: Without dead ends: 417 [2023-12-20 00:43:56,426 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-20 00:43:56,428 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 851 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 904 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 873 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 960 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 904 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-20 00:43:56,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [873 Valid, 572 Invalid, 960 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 904 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-20 00:43:56,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2023-12-20 00:43:56,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 307. [2023-12-20 00:43:56,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 274 states have (on average 1.6313868613138687) internal successors, (447), 276 states have internal predecessors, (447), 26 states have call successors, (26), 7 states have call predecessors, (26), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-12-20 00:43:56,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 497 transitions. [2023-12-20 00:43:56,487 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 497 transitions. Word has length 141 [2023-12-20 00:43:56,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:43:56,488 INFO L495 AbstractCegarLoop]: Abstraction has 307 states and 497 transitions. [2023-12-20 00:43:56,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 3 states have internal predecessors, (130), 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 00:43:56,488 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 497 transitions. [2023-12-20 00:43:56,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-20 00:43:56,490 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:43:56,490 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:43:56,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 00:43:56,491 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:43:56,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:43:56,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1730569005, now seen corresponding path program 1 times [2023-12-20 00:43:56,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:43:56,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623380933] [2023-12-20 00:43:56,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:43:56,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:43:56,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:56,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:43:56,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:56,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-20 00:43:56,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:56,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-20 00:43:56,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:56,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-12-20 00:43:56,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:56,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-12-20 00:43:56,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:56,639 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 00:43:56,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:43:56,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623380933] [2023-12-20 00:43:56,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623380933] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:43:56,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:43:56,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 00:43:56,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528871171] [2023-12-20 00:43:56,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:43:56,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 00:43:56,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:43:56,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 00:43:56,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 00:43:56,642 INFO L87 Difference]: Start difference. First operand 307 states and 497 transitions. Second operand has 5 states, 5 states have (on average 26.0) internal successors, (130), 3 states have internal predecessors, (130), 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 00:43:57,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:43:57,749 INFO L93 Difference]: Finished difference Result 712 states and 1170 transitions. [2023-12-20 00:43:57,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 00:43:57,749 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 3 states have internal predecessors, (130), 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 141 [2023-12-20 00:43:57,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:43:57,754 INFO L225 Difference]: With dead ends: 712 [2023-12-20 00:43:57,754 INFO L226 Difference]: Without dead ends: 417 [2023-12-20 00:43:57,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 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 00:43:57,758 INFO L413 NwaCegarLoop]: 269 mSDtfsCounter, 840 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 900 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 862 SdHoareTripleChecker+Valid, 567 SdHoareTripleChecker+Invalid, 956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 900 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-20 00:43:57,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [862 Valid, 567 Invalid, 956 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 900 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-20 00:43:57,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2023-12-20 00:43:57,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 307. [2023-12-20 00:43:57,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 274 states have (on average 1.6277372262773722) internal successors, (446), 276 states have internal predecessors, (446), 26 states have call successors, (26), 7 states have call predecessors, (26), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-12-20 00:43:57,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 496 transitions. [2023-12-20 00:43:57,784 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 496 transitions. Word has length 141 [2023-12-20 00:43:57,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:43:57,784 INFO L495 AbstractCegarLoop]: Abstraction has 307 states and 496 transitions. [2023-12-20 00:43:57,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 3 states have internal predecessors, (130), 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 00:43:57,784 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 496 transitions. [2023-12-20 00:43:57,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-20 00:43:57,786 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:43:57,786 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:43:57,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 00:43:57,786 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:43:57,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:43:57,786 INFO L85 PathProgramCache]: Analyzing trace with hash -1979626641, now seen corresponding path program 1 times [2023-12-20 00:43:57,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:43:57,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894056174] [2023-12-20 00:43:57,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:43:57,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:43:57,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:57,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:43:57,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:57,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-20 00:43:57,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:57,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-20 00:43:57,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:57,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-12-20 00:43:57,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:57,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-12-20 00:43:57,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:57,995 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 00:43:57,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:43:57,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894056174] [2023-12-20 00:43:57,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894056174] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:43:57,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:43:57,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 00:43:57,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904051187] [2023-12-20 00:43:57,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:43:57,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 00:43:57,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:43:57,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 00:43:57,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-20 00:43:57,996 INFO L87 Difference]: Start difference. First operand 307 states and 496 transitions. Second operand has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 4 states have internal predecessors, (130), 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 00:43:59,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:43:59,951 INFO L93 Difference]: Finished difference Result 1124 states and 1858 transitions. [2023-12-20 00:43:59,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-20 00:43:59,951 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 4 states have internal predecessors, (130), 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 141 [2023-12-20 00:43:59,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:43:59,955 INFO L225 Difference]: With dead ends: 1124 [2023-12-20 00:43:59,955 INFO L226 Difference]: Without dead ends: 833 [2023-12-20 00:43:59,956 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-12-20 00:43:59,957 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 1274 mSDsluCounter, 716 mSDsCounter, 0 mSdLazyCounter, 1960 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1291 SdHoareTripleChecker+Valid, 957 SdHoareTripleChecker+Invalid, 2068 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 1960 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-20 00:43:59,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1291 Valid, 957 Invalid, 2068 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 1960 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-20 00:43:59,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 833 states. [2023-12-20 00:43:59,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 833 to 612. [2023-12-20 00:44:00,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 612 states, 553 states have (on average 1.6383363471971066) internal successors, (906), 556 states have internal predecessors, (906), 45 states have call successors, (45), 13 states have call predecessors, (45), 13 states have return successors, (46), 43 states have call predecessors, (46), 43 states have call successors, (46) [2023-12-20 00:44:00,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 997 transitions. [2023-12-20 00:44:00,004 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 997 transitions. Word has length 141 [2023-12-20 00:44:00,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:44:00,005 INFO L495 AbstractCegarLoop]: Abstraction has 612 states and 997 transitions. [2023-12-20 00:44:00,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 4 states have internal predecessors, (130), 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 00:44:00,005 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 997 transitions. [2023-12-20 00:44:00,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-20 00:44:00,011 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:44:00,011 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:44:00,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 00:44:00,013 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:44:00,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:44:00,013 INFO L85 PathProgramCache]: Analyzing trace with hash 1805366959, now seen corresponding path program 1 times [2023-12-20 00:44:00,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:44:00,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091769314] [2023-12-20 00:44:00,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:44:00,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:44:00,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:00,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:44:00,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:00,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-20 00:44:00,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:00,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-20 00:44:00,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:00,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-12-20 00:44:00,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:00,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-12-20 00:44:00,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:00,239 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 00:44:00,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:44:00,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091769314] [2023-12-20 00:44:00,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091769314] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:44:00,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:44:00,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 00:44:00,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30326433] [2023-12-20 00:44:00,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:44:00,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 00:44:00,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:44:00,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 00:44:00,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:44:00,241 INFO L87 Difference]: Start difference. First operand 612 states and 997 transitions. Second operand has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 5 states have internal predecessors, (130), 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 00:44:02,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:44:02,985 INFO L93 Difference]: Finished difference Result 1859 states and 3076 transitions. [2023-12-20 00:44:02,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 00:44:02,986 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 5 states have internal predecessors, (130), 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 141 [2023-12-20 00:44:02,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:44:02,992 INFO L225 Difference]: With dead ends: 1859 [2023-12-20 00:44:02,992 INFO L226 Difference]: Without dead ends: 1263 [2023-12-20 00:44:02,996 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 00:44:03,001 INFO L413 NwaCegarLoop]: 424 mSDtfsCounter, 1301 mSDsluCounter, 1403 mSDsCounter, 0 mSdLazyCounter, 3191 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1318 SdHoareTripleChecker+Valid, 1827 SdHoareTripleChecker+Invalid, 3252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 3191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-20 00:44:03,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1318 Valid, 1827 Invalid, 3252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 3191 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-20 00:44:03,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1263 states. [2023-12-20 00:44:03,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1263 to 894. [2023-12-20 00:44:03,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 894 states, 809 states have (on average 1.6316440049443757) internal successors, (1320), 813 states have internal predecessors, (1320), 64 states have call successors, (64), 19 states have call predecessors, (64), 20 states have return successors, (67), 63 states have call predecessors, (67), 62 states have call successors, (67) [2023-12-20 00:44:03,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 894 states to 894 states and 1451 transitions. [2023-12-20 00:44:03,041 INFO L78 Accepts]: Start accepts. Automaton has 894 states and 1451 transitions. Word has length 141 [2023-12-20 00:44:03,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:44:03,041 INFO L495 AbstractCegarLoop]: Abstraction has 894 states and 1451 transitions. [2023-12-20 00:44:03,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 5 states have internal predecessors, (130), 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 00:44:03,041 INFO L276 IsEmpty]: Start isEmpty. Operand 894 states and 1451 transitions. [2023-12-20 00:44:03,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-20 00:44:03,042 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:44:03,042 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:44:03,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 00:44:03,043 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:44:03,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:44:03,043 INFO L85 PathProgramCache]: Analyzing trace with hash -245041939, now seen corresponding path program 1 times [2023-12-20 00:44:03,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:44:03,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391010433] [2023-12-20 00:44:03,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:44:03,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:44:03,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:03,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:44:03,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:03,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-20 00:44:03,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:03,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-20 00:44:03,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:03,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-12-20 00:44:03,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:03,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-12-20 00:44:03,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:03,276 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 00:44:03,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:44:03,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391010433] [2023-12-20 00:44:03,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391010433] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:44:03,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:44:03,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 00:44:03,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14515036] [2023-12-20 00:44:03,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:44:03,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 00:44:03,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:44:03,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 00:44:03,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:44:03,285 INFO L87 Difference]: Start difference. First operand 894 states and 1451 transitions. Second operand has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 5 states have internal predecessors, (130), 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 00:44:05,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:44:05,706 INFO L93 Difference]: Finished difference Result 2936 states and 4850 transitions. [2023-12-20 00:44:05,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 00:44:05,706 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 5 states have internal predecessors, (130), 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 141 [2023-12-20 00:44:05,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:44:05,714 INFO L225 Difference]: With dead ends: 2936 [2023-12-20 00:44:05,714 INFO L226 Difference]: Without dead ends: 2058 [2023-12-20 00:44:05,715 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 00:44:05,717 INFO L413 NwaCegarLoop]: 250 mSDtfsCounter, 1403 mSDsluCounter, 932 mSDsCounter, 0 mSdLazyCounter, 2637 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1420 SdHoareTripleChecker+Valid, 1182 SdHoareTripleChecker+Invalid, 2736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 2637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-20 00:44:05,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1420 Valid, 1182 Invalid, 2736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 2637 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-20 00:44:05,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2058 states. [2023-12-20 00:44:05,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2058 to 1459. [2023-12-20 00:44:05,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1459 states, 1322 states have (on average 1.6255673222390317) internal successors, (2149), 1328 states have internal predecessors, (2149), 102 states have call successors, (102), 31 states have call predecessors, (102), 34 states have return successors, (113), 103 states have call predecessors, (113), 100 states have call successors, (113) [2023-12-20 00:44:05,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1459 states to 1459 states and 2364 transitions. [2023-12-20 00:44:05,772 INFO L78 Accepts]: Start accepts. Automaton has 1459 states and 2364 transitions. Word has length 141 [2023-12-20 00:44:05,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:44:05,772 INFO L495 AbstractCegarLoop]: Abstraction has 1459 states and 2364 transitions. [2023-12-20 00:44:05,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 5 states have internal predecessors, (130), 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 00:44:05,772 INFO L276 IsEmpty]: Start isEmpty. Operand 1459 states and 2364 transitions. [2023-12-20 00:44:05,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-20 00:44:05,773 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:44:05,773 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:44:05,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 00:44:05,774 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:44:05,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:44:05,774 INFO L85 PathProgramCache]: Analyzing trace with hash 243005167, now seen corresponding path program 1 times [2023-12-20 00:44:05,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:44:05,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435904583] [2023-12-20 00:44:05,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:44:05,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:44:05,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:05,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:44:05,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:05,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-20 00:44:05,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:05,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-20 00:44:05,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:05,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-12-20 00:44:05,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:05,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-12-20 00:44:05,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:05,930 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 00:44:05,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:44:05,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435904583] [2023-12-20 00:44:05,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435904583] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:44:05,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:44:05,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 00:44:05,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126318100] [2023-12-20 00:44:05,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:44:05,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 00:44:05,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:44:05,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 00:44:05,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:44:05,932 INFO L87 Difference]: Start difference. First operand 1459 states and 2364 transitions. Second operand has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 5 states have internal predecessors, (130), 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 00:44:07,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:44:07,269 INFO L93 Difference]: Finished difference Result 3485 states and 5746 transitions. [2023-12-20 00:44:07,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 00:44:07,269 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 5 states have internal predecessors, (130), 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 141 [2023-12-20 00:44:07,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:44:07,276 INFO L225 Difference]: With dead ends: 3485 [2023-12-20 00:44:07,276 INFO L226 Difference]: Without dead ends: 2042 [2023-12-20 00:44:07,279 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 00:44:07,279 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 939 mSDsluCounter, 701 mSDsCounter, 0 mSdLazyCounter, 1613 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 957 SdHoareTripleChecker+Valid, 929 SdHoareTripleChecker+Invalid, 1678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-20 00:44:07,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [957 Valid, 929 Invalid, 1678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1613 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-20 00:44:07,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2042 states. [2023-12-20 00:44:07,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2042 to 1459. [2023-12-20 00:44:07,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1459 states, 1322 states have (on average 1.62178517397882) internal successors, (2144), 1328 states have internal predecessors, (2144), 102 states have call successors, (102), 31 states have call predecessors, (102), 34 states have return successors, (113), 103 states have call predecessors, (113), 100 states have call successors, (113) [2023-12-20 00:44:07,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1459 states to 1459 states and 2359 transitions. [2023-12-20 00:44:07,333 INFO L78 Accepts]: Start accepts. Automaton has 1459 states and 2359 transitions. Word has length 141 [2023-12-20 00:44:07,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:44:07,333 INFO L495 AbstractCegarLoop]: Abstraction has 1459 states and 2359 transitions. [2023-12-20 00:44:07,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 5 states have internal predecessors, (130), 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 00:44:07,334 INFO L276 IsEmpty]: Start isEmpty. Operand 1459 states and 2359 transitions. [2023-12-20 00:44:07,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-20 00:44:07,335 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:44:07,335 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:44:07,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 00:44:07,335 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:44:07,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:44:07,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1039167119, now seen corresponding path program 1 times [2023-12-20 00:44:07,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:44:07,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761466781] [2023-12-20 00:44:07,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:44:07,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:44:07,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:07,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:44:07,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:07,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-20 00:44:07,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:07,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-20 00:44:07,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:07,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-12-20 00:44:07,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:07,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-12-20 00:44:07,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:07,500 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 00:44:07,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:44:07,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761466781] [2023-12-20 00:44:07,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761466781] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:44:07,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:44:07,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 00:44:07,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997265481] [2023-12-20 00:44:07,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:44:07,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 00:44:07,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:44:07,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 00:44:07,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:44:07,502 INFO L87 Difference]: Start difference. First operand 1459 states and 2359 transitions. Second operand has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 5 states have internal predecessors, (130), 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 00:44:08,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:44:08,838 INFO L93 Difference]: Finished difference Result 3479 states and 5719 transitions. [2023-12-20 00:44:08,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 00:44:08,839 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 5 states have internal predecessors, (130), 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 141 [2023-12-20 00:44:08,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:44:08,846 INFO L225 Difference]: With dead ends: 3479 [2023-12-20 00:44:08,846 INFO L226 Difference]: Without dead ends: 2036 [2023-12-20 00:44:08,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-20 00:44:08,850 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 937 mSDsluCounter, 701 mSDsCounter, 0 mSdLazyCounter, 1597 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 955 SdHoareTripleChecker+Valid, 929 SdHoareTripleChecker+Invalid, 1662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-20 00:44:08,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [955 Valid, 929 Invalid, 1662 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1597 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-20 00:44:08,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2036 states. [2023-12-20 00:44:08,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2036 to 1459. [2023-12-20 00:44:08,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1459 states, 1322 states have (on average 1.6180030257186082) internal successors, (2139), 1328 states have internal predecessors, (2139), 102 states have call successors, (102), 31 states have call predecessors, (102), 34 states have return successors, (113), 103 states have call predecessors, (113), 100 states have call successors, (113) [2023-12-20 00:44:08,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1459 states to 1459 states and 2354 transitions. [2023-12-20 00:44:08,931 INFO L78 Accepts]: Start accepts. Automaton has 1459 states and 2354 transitions. Word has length 141 [2023-12-20 00:44:08,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:44:08,931 INFO L495 AbstractCegarLoop]: Abstraction has 1459 states and 2354 transitions. [2023-12-20 00:44:08,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 5 states have internal predecessors, (130), 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 00:44:08,931 INFO L276 IsEmpty]: Start isEmpty. Operand 1459 states and 2354 transitions. [2023-12-20 00:44:08,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-20 00:44:08,932 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:44:08,933 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:44:08,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-20 00:44:08,933 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:44:08,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:44:08,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1413324463, now seen corresponding path program 1 times [2023-12-20 00:44:08,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:44:08,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804349726] [2023-12-20 00:44:08,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:44:08,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:44:08,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:09,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:44:09,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:09,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-20 00:44:09,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:09,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-20 00:44:09,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:09,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-12-20 00:44:09,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:09,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-12-20 00:44:09,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:09,112 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 00:44:09,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:44:09,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804349726] [2023-12-20 00:44:09,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804349726] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:44:09,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:44:09,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 00:44:09,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423451809] [2023-12-20 00:44:09,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:44:09,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 00:44:09,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:44:09,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 00:44:09,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:44:09,113 INFO L87 Difference]: Start difference. First operand 1459 states and 2354 transitions. Second operand has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 5 states have internal predecessors, (130), 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 00:44:11,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:44:11,697 INFO L93 Difference]: Finished difference Result 4986 states and 8159 transitions. [2023-12-20 00:44:11,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 00:44:11,712 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 5 states have internal predecessors, (130), 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 141 [2023-12-20 00:44:11,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:44:11,722 INFO L225 Difference]: With dead ends: 4986 [2023-12-20 00:44:11,722 INFO L226 Difference]: Without dead ends: 3543 [2023-12-20 00:44:11,725 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 00:44:11,726 INFO L413 NwaCegarLoop]: 422 mSDtfsCounter, 1285 mSDsluCounter, 1403 mSDsCounter, 0 mSdLazyCounter, 3111 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1302 SdHoareTripleChecker+Valid, 1825 SdHoareTripleChecker+Invalid, 3174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 3111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-20 00:44:11,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1302 Valid, 1825 Invalid, 3174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 3111 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-20 00:44:11,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3543 states. [2023-12-20 00:44:11,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3543 to 2605. [2023-12-20 00:44:11,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2605 states, 2364 states have (on average 1.612098138747885) internal successors, (3811), 2374 states have internal predecessors, (3811), 178 states have call successors, (178), 55 states have call predecessors, (178), 62 states have return successors, (211), 183 states have call predecessors, (211), 176 states have call successors, (211) [2023-12-20 00:44:11,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2605 states to 2605 states and 4200 transitions. [2023-12-20 00:44:11,807 INFO L78 Accepts]: Start accepts. Automaton has 2605 states and 4200 transitions. Word has length 141 [2023-12-20 00:44:11,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:44:11,807 INFO L495 AbstractCegarLoop]: Abstraction has 2605 states and 4200 transitions. [2023-12-20 00:44:11,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 5 states have internal predecessors, (130), 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 00:44:11,807 INFO L276 IsEmpty]: Start isEmpty. Operand 2605 states and 4200 transitions. [2023-12-20 00:44:11,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-20 00:44:11,809 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:44:11,809 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:44:11,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-20 00:44:11,809 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:44:11,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:44:11,810 INFO L85 PathProgramCache]: Analyzing trace with hash -308678223, now seen corresponding path program 1 times [2023-12-20 00:44:11,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:44:11,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473249776] [2023-12-20 00:44:11,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:44:11,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:44:11,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:11,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:44:11,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:11,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-20 00:44:11,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:11,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-20 00:44:11,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:11,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-12-20 00:44:11,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:11,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-12-20 00:44:11,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:11,962 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 00:44:11,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:44:11,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473249776] [2023-12-20 00:44:11,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473249776] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:44:11,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:44:11,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 00:44:11,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604968963] [2023-12-20 00:44:11,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:44:11,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 00:44:11,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:44:11,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 00:44:11,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:44:11,963 INFO L87 Difference]: Start difference. First operand 2605 states and 4200 transitions. Second operand has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 5 states have internal predecessors, (130), 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 00:44:13,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:44:13,103 INFO L93 Difference]: Finished difference Result 6147 states and 10062 transitions. [2023-12-20 00:44:13,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 00:44:13,104 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 5 states have internal predecessors, (130), 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 141 [2023-12-20 00:44:13,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:44:13,116 INFO L225 Difference]: With dead ends: 6147 [2023-12-20 00:44:13,116 INFO L226 Difference]: Without dead ends: 3558 [2023-12-20 00:44:13,122 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 00:44:13,124 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 1067 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 1419 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1085 SdHoareTripleChecker+Valid, 780 SdHoareTripleChecker+Invalid, 1510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-20 00:44:13,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1085 Valid, 780 Invalid, 1510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1419 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-20 00:44:13,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3558 states. [2023-12-20 00:44:13,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3558 to 2605. [2023-12-20 00:44:13,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2605 states, 2364 states have (on average 1.6082910321489001) internal successors, (3802), 2374 states have internal predecessors, (3802), 178 states have call successors, (178), 55 states have call predecessors, (178), 62 states have return successors, (211), 183 states have call predecessors, (211), 176 states have call successors, (211) [2023-12-20 00:44:13,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2605 states to 2605 states and 4191 transitions. [2023-12-20 00:44:13,213 INFO L78 Accepts]: Start accepts. Automaton has 2605 states and 4191 transitions. Word has length 141 [2023-12-20 00:44:13,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:44:13,213 INFO L495 AbstractCegarLoop]: Abstraction has 2605 states and 4191 transitions. [2023-12-20 00:44:13,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 5 states have internal predecessors, (130), 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 00:44:13,214 INFO L276 IsEmpty]: Start isEmpty. Operand 2605 states and 4191 transitions. [2023-12-20 00:44:13,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-20 00:44:13,215 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:44:13,215 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:44:13,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-20 00:44:13,215 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:44:13,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:44:13,216 INFO L85 PathProgramCache]: Analyzing trace with hash -641321361, now seen corresponding path program 1 times [2023-12-20 00:44:13,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:44:13,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068771484] [2023-12-20 00:44:13,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:44:13,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:44:13,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:13,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:44:13,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:13,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-20 00:44:13,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:13,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-20 00:44:13,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:13,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-12-20 00:44:13,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:13,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-12-20 00:44:13,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:13,388 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 00:44:13,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:44:13,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068771484] [2023-12-20 00:44:13,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068771484] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:44:13,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:44:13,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 00:44:13,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072536791] [2023-12-20 00:44:13,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:44:13,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 00:44:13,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:44:13,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 00:44:13,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:44:13,390 INFO L87 Difference]: Start difference. First operand 2605 states and 4191 transitions. Second operand has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 5 states have internal predecessors, (130), 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 00:44:16,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:44:16,020 INFO L93 Difference]: Finished difference Result 9112 states and 14847 transitions. [2023-12-20 00:44:16,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 00:44:16,021 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 5 states have internal predecessors, (130), 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 141 [2023-12-20 00:44:16,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:44:16,042 INFO L225 Difference]: With dead ends: 9112 [2023-12-20 00:44:16,043 INFO L226 Difference]: Without dead ends: 6523 [2023-12-20 00:44:16,048 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 00:44:16,049 INFO L413 NwaCegarLoop]: 422 mSDtfsCounter, 1277 mSDsluCounter, 1403 mSDsCounter, 0 mSdLazyCounter, 3073 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1294 SdHoareTripleChecker+Valid, 1825 SdHoareTripleChecker+Invalid, 3136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 3073 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-20 00:44:16,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1294 Valid, 1825 Invalid, 3136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 3073 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-20 00:44:16,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6523 states. [2023-12-20 00:44:16,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6523 to 4907. [2023-12-20 00:44:16,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4907 states, 4458 states have (on average 1.6029609690444144) internal successors, (7146), 4476 states have internal predecessors, (7146), 330 states have call successors, (330), 103 states have call predecessors, (330), 118 states have return successors, (425), 343 states have call predecessors, (425), 328 states have call successors, (425) [2023-12-20 00:44:16,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4907 states to 4907 states and 7901 transitions. [2023-12-20 00:44:16,239 INFO L78 Accepts]: Start accepts. Automaton has 4907 states and 7901 transitions. Word has length 141 [2023-12-20 00:44:16,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:44:16,239 INFO L495 AbstractCegarLoop]: Abstraction has 4907 states and 7901 transitions. [2023-12-20 00:44:16,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 5 states have internal predecessors, (130), 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 00:44:16,240 INFO L276 IsEmpty]: Start isEmpty. Operand 4907 states and 7901 transitions. [2023-12-20 00:44:16,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-20 00:44:16,243 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:44:16,243 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:44:16,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-20 00:44:16,243 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:44:16,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:44:16,243 INFO L85 PathProgramCache]: Analyzing trace with hash 1287610865, now seen corresponding path program 1 times [2023-12-20 00:44:16,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:44:16,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707654854] [2023-12-20 00:44:16,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:44:16,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:44:16,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:16,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:44:16,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:16,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-20 00:44:16,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:16,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-20 00:44:16,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:16,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-12-20 00:44:16,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:16,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-12-20 00:44:16,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:16,397 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 00:44:16,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:44:16,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707654854] [2023-12-20 00:44:16,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707654854] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:44:16,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:44:16,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 00:44:16,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862836216] [2023-12-20 00:44:16,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:44:16,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 00:44:16,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:44:16,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 00:44:16,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:44:16,398 INFO L87 Difference]: Start difference. First operand 4907 states and 7901 transitions. Second operand has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 5 states have internal predecessors, (130), 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 00:44:19,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:44:19,011 INFO L93 Difference]: Finished difference Result 17380 states and 28355 transitions. [2023-12-20 00:44:19,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 00:44:19,011 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 5 states have internal predecessors, (130), 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 141 [2023-12-20 00:44:19,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:44:19,063 INFO L225 Difference]: With dead ends: 17380 [2023-12-20 00:44:19,063 INFO L226 Difference]: Without dead ends: 12489 [2023-12-20 00:44:19,075 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 00:44:19,076 INFO L413 NwaCegarLoop]: 422 mSDtfsCounter, 1276 mSDsluCounter, 1403 mSDsCounter, 0 mSdLazyCounter, 3060 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1293 SdHoareTripleChecker+Valid, 1825 SdHoareTripleChecker+Invalid, 3123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 3060 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-20 00:44:19,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1293 Valid, 1825 Invalid, 3123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 3060 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-20 00:44:19,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12489 states. [2023-12-20 00:44:19,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12489 to 9524. [2023-12-20 00:44:19,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9524 states, 8659 states have (on average 1.5997228317357663) internal successors, (13852), 8693 states have internal predecessors, (13852), 634 states have call successors, (634), 199 states have call predecessors, (634), 230 states have return successors, (907), 663 states have call predecessors, (907), 632 states have call successors, (907) [2023-12-20 00:44:19,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9524 states to 9524 states and 15393 transitions. [2023-12-20 00:44:19,435 INFO L78 Accepts]: Start accepts. Automaton has 9524 states and 15393 transitions. Word has length 141 [2023-12-20 00:44:19,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:44:19,435 INFO L495 AbstractCegarLoop]: Abstraction has 9524 states and 15393 transitions. [2023-12-20 00:44:19,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 5 states have internal predecessors, (130), 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 00:44:19,436 INFO L276 IsEmpty]: Start isEmpty. Operand 9524 states and 15393 transitions. [2023-12-20 00:44:19,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-20 00:44:19,441 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:44:19,441 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:44:19,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-20 00:44:19,441 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:44:19,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:44:19,441 INFO L85 PathProgramCache]: Analyzing trace with hash -1005470161, now seen corresponding path program 1 times [2023-12-20 00:44:19,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:44:19,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932635476] [2023-12-20 00:44:19,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:44:19,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:44:19,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:19,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:44:19,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:19,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-20 00:44:19,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:19,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-20 00:44:19,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:19,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-12-20 00:44:19,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:19,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-12-20 00:44:19,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:19,600 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 00:44:19,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:44:19,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932635476] [2023-12-20 00:44:19,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932635476] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:44:19,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:44:19,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 00:44:19,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092649844] [2023-12-20 00:44:19,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:44:19,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 00:44:19,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:44:19,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 00:44:19,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:44:19,602 INFO L87 Difference]: Start difference. First operand 9524 states and 15393 transitions. Second operand has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 5 states have internal predecessors, (130), 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 00:44:22,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:44:22,325 INFO L93 Difference]: Finished difference Result 33915 states and 55561 transitions. [2023-12-20 00:44:22,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 00:44:22,325 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 5 states have internal predecessors, (130), 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 141 [2023-12-20 00:44:22,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:44:22,383 INFO L225 Difference]: With dead ends: 33915 [2023-12-20 00:44:22,383 INFO L226 Difference]: Without dead ends: 24407 [2023-12-20 00:44:22,404 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 00:44:22,404 INFO L413 NwaCegarLoop]: 250 mSDtfsCounter, 1364 mSDsluCounter, 932 mSDsCounter, 0 mSdLazyCounter, 2543 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1381 SdHoareTripleChecker+Valid, 1182 SdHoareTripleChecker+Invalid, 2642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 2543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-20 00:44:22,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1381 Valid, 1182 Invalid, 2642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 2543 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-20 00:44:22,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24407 states. [2023-12-20 00:44:23,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24407 to 18789. [2023-12-20 00:44:23,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18789 states, 17092 states have (on average 1.597823543178095) internal successors, (27310), 17158 states have internal predecessors, (27310), 1242 states have call successors, (1242), 391 states have call predecessors, (1242), 454 states have return successors, (2033), 1303 states have call predecessors, (2033), 1240 states have call successors, (2033) [2023-12-20 00:44:23,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18789 states to 18789 states and 30585 transitions. [2023-12-20 00:44:23,129 INFO L78 Accepts]: Start accepts. Automaton has 18789 states and 30585 transitions. Word has length 141 [2023-12-20 00:44:23,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:44:23,130 INFO L495 AbstractCegarLoop]: Abstraction has 18789 states and 30585 transitions. [2023-12-20 00:44:23,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 5 states have internal predecessors, (130), 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 00:44:23,130 INFO L276 IsEmpty]: Start isEmpty. Operand 18789 states and 30585 transitions. [2023-12-20 00:44:23,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-20 00:44:23,140 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:44:23,140 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:44:23,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-20 00:44:23,141 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:44:23,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:44:23,141 INFO L85 PathProgramCache]: Analyzing trace with hash 721674801, now seen corresponding path program 1 times [2023-12-20 00:44:23,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:44:23,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238755892] [2023-12-20 00:44:23,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:44:23,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:44:23,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:23,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:44:23,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:23,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-20 00:44:23,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:23,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-20 00:44:23,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:23,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-12-20 00:44:23,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:23,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-12-20 00:44:23,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:23,312 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 00:44:23,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:44:23,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238755892] [2023-12-20 00:44:23,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238755892] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:44:23,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:44:23,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 00:44:23,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226904367] [2023-12-20 00:44:23,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:44:23,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 00:44:23,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:44:23,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 00:44:23,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:44:23,314 INFO L87 Difference]: Start difference. First operand 18789 states and 30585 transitions. Second operand has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 5 states have internal predecessors, (130), 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 00:44:27,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:44:27,008 INFO L93 Difference]: Finished difference Result 74408 states and 122669 transitions. [2023-12-20 00:44:27,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 00:44:27,008 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 5 states have internal predecessors, (130), 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 141 [2023-12-20 00:44:27,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:44:27,178 INFO L225 Difference]: With dead ends: 74408 [2023-12-20 00:44:27,178 INFO L226 Difference]: Without dead ends: 55635 [2023-12-20 00:44:27,231 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 00:44:27,232 INFO L413 NwaCegarLoop]: 419 mSDtfsCounter, 1358 mSDsluCounter, 1395 mSDsCounter, 0 mSdLazyCounter, 3569 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1374 SdHoareTripleChecker+Valid, 1814 SdHoareTripleChecker+Invalid, 3634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 3569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-20 00:44:27,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1374 Valid, 1814 Invalid, 3634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 3569 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-20 00:44:27,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55635 states. [2023-12-20 00:44:28,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55635 to 36679. [2023-12-20 00:44:28,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36679 states, 33382 states have (on average 1.5946917500449345) internal successors, (53234), 33512 states have internal predecessors, (53234), 2394 states have call successors, (2394), 775 states have call predecessors, (2394), 902 states have return successors, (4707), 2519 states have call predecessors, (4707), 2392 states have call successors, (4707) [2023-12-20 00:44:28,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36679 states to 36679 states and 60335 transitions. [2023-12-20 00:44:28,849 INFO L78 Accepts]: Start accepts. Automaton has 36679 states and 60335 transitions. Word has length 141 [2023-12-20 00:44:28,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:44:28,851 INFO L495 AbstractCegarLoop]: Abstraction has 36679 states and 60335 transitions. [2023-12-20 00:44:28,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 5 states have internal predecessors, (130), 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 00:44:28,851 INFO L276 IsEmpty]: Start isEmpty. Operand 36679 states and 60335 transitions. [2023-12-20 00:44:28,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-20 00:44:28,866 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:44:28,866 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:44:28,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-20 00:44:28,867 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:44:28,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:44:28,868 INFO L85 PathProgramCache]: Analyzing trace with hash -925688141, now seen corresponding path program 1 times [2023-12-20 00:44:28,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:44:28,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595238430] [2023-12-20 00:44:28,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:44:28,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:44:28,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:28,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:44:28,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:28,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-20 00:44:28,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:28,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-20 00:44:29,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:29,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-12-20 00:44:29,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:29,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-12-20 00:44:29,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:29,009 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 00:44:29,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:44:29,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595238430] [2023-12-20 00:44:29,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595238430] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:44:29,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:44:29,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 00:44:29,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134993478] [2023-12-20 00:44:29,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:44:29,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 00:44:29,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:44:29,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 00:44:29,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:44:29,011 INFO L87 Difference]: Start difference. First operand 36679 states and 60335 transitions. Second operand has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 5 states have internal predecessors, (130), 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 00:44:31,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:44:31,411 INFO L93 Difference]: Finished difference Result 84579 states and 141867 transitions. [2023-12-20 00:44:31,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 00:44:31,412 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 5 states have internal predecessors, (130), 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 141 [2023-12-20 00:44:31,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:44:31,578 INFO L225 Difference]: With dead ends: 84579 [2023-12-20 00:44:31,578 INFO L226 Difference]: Without dead ends: 47916 [2023-12-20 00:44:31,665 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-20 00:44:31,666 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 940 mSDsluCounter, 700 mSDsCounter, 0 mSdLazyCounter, 1503 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 958 SdHoareTripleChecker+Valid, 928 SdHoareTripleChecker+Invalid, 1570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-20 00:44:31,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [958 Valid, 928 Invalid, 1570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1503 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-20 00:44:31,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47916 states. [2023-12-20 00:44:33,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47916 to 36679. [2023-12-20 00:44:33,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36679 states, 33382 states have (on average 1.5908273920076688) internal successors, (53105), 33512 states have internal predecessors, (53105), 2394 states have call successors, (2394), 775 states have call predecessors, (2394), 902 states have return successors, (4707), 2519 states have call predecessors, (4707), 2392 states have call successors, (4707) [2023-12-20 00:44:33,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36679 states to 36679 states and 60206 transitions. [2023-12-20 00:44:33,240 INFO L78 Accepts]: Start accepts. Automaton has 36679 states and 60206 transitions. Word has length 141 [2023-12-20 00:44:33,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:44:33,240 INFO L495 AbstractCegarLoop]: Abstraction has 36679 states and 60206 transitions. [2023-12-20 00:44:33,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 5 states have internal predecessors, (130), 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 00:44:33,241 INFO L276 IsEmpty]: Start isEmpty. Operand 36679 states and 60206 transitions. [2023-12-20 00:44:33,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-20 00:44:33,261 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:44:33,261 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:44:33,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-20 00:44:33,261 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:44:33,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:44:33,261 INFO L85 PathProgramCache]: Analyzing trace with hash 1237928433, now seen corresponding path program 1 times [2023-12-20 00:44:33,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:44:33,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069683341] [2023-12-20 00:44:33,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:44:33,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:44:33,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:33,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:44:33,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:33,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-20 00:44:33,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:33,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-20 00:44:33,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:33,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-12-20 00:44:33,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:33,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-12-20 00:44:33,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:33,421 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 00:44:33,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:44:33,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069683341] [2023-12-20 00:44:33,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069683341] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:44:33,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:44:33,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 00:44:33,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947369730] [2023-12-20 00:44:33,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:44:33,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 00:44:33,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:44:33,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 00:44:33,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:44:33,423 INFO L87 Difference]: Start difference. First operand 36679 states and 60206 transitions. Second operand has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 5 states have internal predecessors, (130), 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 00:44:38,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:44:38,277 INFO L93 Difference]: Finished difference Result 142662 states and 237101 transitions. [2023-12-20 00:44:38,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 00:44:38,278 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 5 states have internal predecessors, (130), 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 141 [2023-12-20 00:44:38,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:44:38,566 INFO L225 Difference]: With dead ends: 142662 [2023-12-20 00:44:38,566 INFO L226 Difference]: Without dead ends: 105999 [2023-12-20 00:44:38,641 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 00:44:38,641 INFO L413 NwaCegarLoop]: 420 mSDtfsCounter, 1527 mSDsluCounter, 1398 mSDsCounter, 0 mSdLazyCounter, 2967 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1555 SdHoareTripleChecker+Valid, 1818 SdHoareTripleChecker+Invalid, 3033 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 2967 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-20 00:44:38,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1555 Valid, 1818 Invalid, 3033 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 2967 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-20 00:44:38,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105999 states. [2023-12-20 00:44:41,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105999 to 73225. [2023-12-20 00:44:41,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73225 states, 66792 states have (on average 1.5904449634686788) internal successors, (106229), 67050 states have internal predecessors, (106229), 4634 states have call successors, (4634), 1543 states have call predecessors, (4634), 1798 states have return successors, (11449), 4887 states have call predecessors, (11449), 4632 states have call successors, (11449) [2023-12-20 00:44:41,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73225 states to 73225 states and 122312 transitions. [2023-12-20 00:44:41,712 INFO L78 Accepts]: Start accepts. Automaton has 73225 states and 122312 transitions. Word has length 141 [2023-12-20 00:44:41,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:44:41,712 INFO L495 AbstractCegarLoop]: Abstraction has 73225 states and 122312 transitions. [2023-12-20 00:44:41,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 5 states have internal predecessors, (130), 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 00:44:41,712 INFO L276 IsEmpty]: Start isEmpty. Operand 73225 states and 122312 transitions. [2023-12-20 00:44:41,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-20 00:44:41,747 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:44:41,747 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:44:41,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-20 00:44:41,747 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:44:41,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:44:41,747 INFO L85 PathProgramCache]: Analyzing trace with hash 199343859, now seen corresponding path program 1 times [2023-12-20 00:44:41,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:44:41,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851798429] [2023-12-20 00:44:41,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:44:41,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:44:41,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:41,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:44:41,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:41,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-20 00:44:41,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:41,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-20 00:44:41,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:41,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-12-20 00:44:41,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:41,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-12-20 00:44:41,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:41,896 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 00:44:41,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:44:41,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851798429] [2023-12-20 00:44:41,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851798429] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:44:41,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:44:41,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 00:44:41,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094799458] [2023-12-20 00:44:41,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:44:41,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 00:44:41,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:44:41,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 00:44:41,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:44:41,899 INFO L87 Difference]: Start difference. First operand 73225 states and 122312 transitions. Second operand has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 5 states have internal predecessors, (130), 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 00:44:49,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:44:49,292 INFO L93 Difference]: Finished difference Result 280838 states and 475141 transitions. [2023-12-20 00:44:49,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 00:44:49,293 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 5 states have internal predecessors, (130), 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 141 [2023-12-20 00:44:49,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:44:50,074 INFO L225 Difference]: With dead ends: 280838 [2023-12-20 00:44:50,074 INFO L226 Difference]: Without dead ends: 207629 [2023-12-20 00:44:50,234 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-20 00:44:50,234 INFO L413 NwaCegarLoop]: 420 mSDtfsCounter, 1323 mSDsluCounter, 1398 mSDsCounter, 0 mSdLazyCounter, 3381 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1339 SdHoareTripleChecker+Valid, 1818 SdHoareTripleChecker+Invalid, 3446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 3381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-20 00:44:50,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1339 Valid, 1818 Invalid, 3446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 3381 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-20 00:44:50,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207629 states. [2023-12-20 00:44:55,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207629 to 146314. [2023-12-20 00:44:55,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146314 states, 133737 states have (on average 1.5906368469458714) internal successors, (212727), 134251 states have internal predecessors, (212727), 8986 states have call successors, (8986), 3079 states have call predecessors, (8986), 3590 states have return successors, (29179), 9495 states have call predecessors, (29179), 8984 states have call successors, (29179) [2023-12-20 00:44:56,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146314 states to 146314 states and 250892 transitions. [2023-12-20 00:44:56,819 INFO L78 Accepts]: Start accepts. Automaton has 146314 states and 250892 transitions. Word has length 141 [2023-12-20 00:44:56,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:44:56,819 INFO L495 AbstractCegarLoop]: Abstraction has 146314 states and 250892 transitions. [2023-12-20 00:44:56,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 5 states have internal predecessors, (130), 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 00:44:56,819 INFO L276 IsEmpty]: Start isEmpty. Operand 146314 states and 250892 transitions. [2023-12-20 00:44:56,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-20 00:44:56,881 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:44:56,881 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:44:56,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-20 00:44:56,881 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:44:56,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:44:56,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1773821519, now seen corresponding path program 1 times [2023-12-20 00:44:56,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:44:56,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328412633] [2023-12-20 00:44:56,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:44:56,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:44:56,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:56,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:44:56,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:56,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-20 00:44:56,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:56,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-20 00:44:56,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:56,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-12-20 00:44:56,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:57,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-12-20 00:44:57,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:44:57,002 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 00:44:57,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:44:57,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328412633] [2023-12-20 00:44:57,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328412633] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:44:57,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:44:57,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 00:44:57,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472061651] [2023-12-20 00:44:57,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:44:57,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 00:44:57,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:44:57,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 00:44:57,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:44:57,004 INFO L87 Difference]: Start difference. First operand 146314 states and 250892 transitions. Second operand has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 5 states have internal predecessors, (130), 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 00:45:03,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:45:03,238 INFO L93 Difference]: Finished difference Result 333923 states and 589808 transitions. [2023-12-20 00:45:03,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 00:45:03,238 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 5 states have internal predecessors, (130), 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 141 [2023-12-20 00:45:03,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:45:03,999 INFO L225 Difference]: With dead ends: 333923 [2023-12-20 00:45:03,999 INFO L226 Difference]: Without dead ends: 187625 [2023-12-20 00:45:04,360 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 00:45:04,361 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 1071 mSDsluCounter, 551 mSDsCounter, 0 mSdLazyCounter, 1333 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1089 SdHoareTripleChecker+Valid, 779 SdHoareTripleChecker+Invalid, 1426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 1333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-20 00:45:04,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1089 Valid, 779 Invalid, 1426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 1333 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-20 00:45:04,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187625 states. [2023-12-20 00:45:10,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187625 to 146314. [2023-12-20 00:45:10,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146314 states, 133737 states have (on average 1.5868009600933175) internal successors, (212214), 134251 states have internal predecessors, (212214), 8986 states have call successors, (8986), 3079 states have call predecessors, (8986), 3590 states have return successors, (29179), 9495 states have call predecessors, (29179), 8984 states have call successors, (29179) [2023-12-20 00:45:11,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146314 states to 146314 states and 250379 transitions. [2023-12-20 00:45:11,013 INFO L78 Accepts]: Start accepts. Automaton has 146314 states and 250379 transitions. Word has length 141 [2023-12-20 00:45:11,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:45:11,014 INFO L495 AbstractCegarLoop]: Abstraction has 146314 states and 250379 transitions. [2023-12-20 00:45:11,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 5 states have internal predecessors, (130), 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 00:45:11,014 INFO L276 IsEmpty]: Start isEmpty. Operand 146314 states and 250379 transitions. [2023-12-20 00:45:11,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-20 00:45:11,298 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:45:11,298 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:45:11,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-20 00:45:11,298 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:45:11,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:45:11,298 INFO L85 PathProgramCache]: Analyzing trace with hash 379285299, now seen corresponding path program 1 times [2023-12-20 00:45:11,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:45:11,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807767488] [2023-12-20 00:45:11,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:45:11,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:45:11,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:45:11,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:45:11,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:45:11,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-20 00:45:11,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:45:11,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-20 00:45:11,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:45:11,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-12-20 00:45:11,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:45:11,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-12-20 00:45:11,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:45:11,446 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 00:45:11,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:45:11,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807767488] [2023-12-20 00:45:11,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807767488] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:45:11,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:45:11,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 00:45:11,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308780190] [2023-12-20 00:45:11,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:45:11,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 00:45:11,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:45:11,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 00:45:11,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:45:11,448 INFO L87 Difference]: Start difference. First operand 146314 states and 250379 transitions. Second operand has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 5 states have internal predecessors, (130), 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 00:45:23,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:45:23,322 INFO L93 Difference]: Finished difference Result 546691 states and 949251 transitions. [2023-12-20 00:45:23,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 00:45:23,323 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 5 states have internal predecessors, (130), 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 141 [2023-12-20 00:45:23,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:45:25,075 INFO L225 Difference]: With dead ends: 546691 [2023-12-20 00:45:25,076 INFO L226 Difference]: Without dead ends: 400393 [2023-12-20 00:45:25,530 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 00:45:25,531 INFO L413 NwaCegarLoop]: 420 mSDtfsCounter, 1297 mSDsluCounter, 1398 mSDsCounter, 0 mSdLazyCounter, 3251 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1313 SdHoareTripleChecker+Valid, 1818 SdHoareTripleChecker+Invalid, 3316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 3251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-20 00:45:25,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1313 Valid, 1818 Invalid, 3316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 3251 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-20 00:45:25,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400393 states. [2023-12-20 00:45:37,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400393 to 293004. [2023-12-20 00:45:37,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293004 states, 268395 states have (on average 1.5861770897371412) internal successors, (425722), 269421 states have internal predecessors, (425722), 17434 states have call successors, (17434), 6151 states have call predecessors, (17434), 7174 states have return successors, (77505), 18455 states have call predecessors, (77505), 17432 states have call successors, (77505)