/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.07.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 00:42:52,779 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 00:42:52,816 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 00:42:52,819 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 00:42:52,819 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 00:42:52,832 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 00:42:52,832 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 00:42:52,833 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 00:42:52,833 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 00:42:52,833 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 00:42:52,833 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 00:42:52,834 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 00:42:52,834 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 00:42:52,834 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 00:42:52,834 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 00:42:52,835 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 00:42:52,835 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 00:42:52,835 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 00:42:52,835 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 00:42:52,836 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 00:42:52,836 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 00:42:52,836 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 00:42:52,836 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 00:42:52,837 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 00:42:52,837 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 00:42:52,837 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 00:42:52,837 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 00:42:52,837 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 00:42:52,838 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 00:42:52,838 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 00:42:52,838 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 00:42:52,838 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 00:42:52,838 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 00:42:52,838 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 00:42:52,839 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 00:42:52,839 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 00:42:52,839 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 00:42:52,839 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 00:42:52,839 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 00:42:52,839 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 00:42:52,840 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 00:42:52,840 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 00:42:52,840 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 00:42:52,840 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-20 00:42:52,985 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 00:42:52,998 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 00:42:53,000 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 00:42:53,001 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 00:42:53,001 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 00:42:53,002 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/token_ring.07.cil-2.c [2023-12-20 00:42:54,101 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 00:42:54,259 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 00:42:54,259 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/systemc/token_ring.07.cil-2.c [2023-12-20 00:42:54,274 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a65087350/739a0b5b3f944795aeea48f9281e07ea/FLAG63f3a9285 [2023-12-20 00:42:54,284 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a65087350/739a0b5b3f944795aeea48f9281e07ea [2023-12-20 00:42:54,286 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 00:42:54,287 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 00:42:54,288 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 00:42:54,288 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 00:42:54,291 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 00:42:54,292 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 12:42:54" (1/1) ... [2023-12-20 00:42:54,293 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a018326 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:42:54, skipping insertion in model container [2023-12-20 00:42:54,293 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 12:42:54" (1/1) ... [2023-12-20 00:42:54,331 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 00:42:54,421 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.07.cil-2.c[671,684] [2023-12-20 00:42:54,490 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 00:42:54,510 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 00:42:54,526 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.07.cil-2.c[671,684] [2023-12-20 00:42:54,562 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 00:42:54,574 INFO L206 MainTranslator]: Completed translation [2023-12-20 00:42:54,574 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:42:54 WrapperNode [2023-12-20 00:42:54,574 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 00:42:54,575 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 00:42:54,575 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 00:42:54,575 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 00:42:54,595 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:42:54" (1/1) ... [2023-12-20 00:42:54,604 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:42:54" (1/1) ... [2023-12-20 00:42:54,645 INFO L138 Inliner]: procedures = 42, calls = 53, calls flagged for inlining = 25, calls inlined = 25, statements flattened = 585 [2023-12-20 00:42:54,645 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 00:42:54,646 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 00:42:54,646 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 00:42:54,646 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 00:42:54,662 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:42:54" (1/1) ... [2023-12-20 00:42:54,662 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:42:54" (1/1) ... [2023-12-20 00:42:54,670 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:42:54" (1/1) ... [2023-12-20 00:42:54,694 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 00:42:54,694 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:42:54" (1/1) ... [2023-12-20 00:42:54,695 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:42:54" (1/1) ... [2023-12-20 00:42:54,701 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:42:54" (1/1) ... [2023-12-20 00:42:54,714 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:42:54" (1/1) ... [2023-12-20 00:42:54,716 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:42:54" (1/1) ... [2023-12-20 00:42:54,717 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:42:54" (1/1) ... [2023-12-20 00:42:54,720 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 00:42:54,720 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 00:42:54,720 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 00:42:54,721 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 00:42:54,721 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:42:54" (1/1) ... [2023-12-20 00:42:54,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 00:42:54,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 00:42:54,744 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 00:42:54,769 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 00:42:54,801 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 00:42:54,801 INFO L130 BoogieDeclarations]: Found specification of procedure error [2023-12-20 00:42:54,801 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2023-12-20 00:42:54,801 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-12-20 00:42:54,802 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-12-20 00:42:54,802 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-12-20 00:42:54,802 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-12-20 00:42:54,802 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-20 00:42:54,802 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-20 00:42:54,802 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-12-20 00:42:54,802 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-12-20 00:42:54,802 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-12-20 00:42:54,802 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-12-20 00:42:54,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 00:42:54,802 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-12-20 00:42:54,802 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-12-20 00:42:54,802 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 00:42:54,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 00:42:54,898 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 00:42:54,899 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 00:42:55,257 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 00:42:55,321 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 00:42:55,321 INFO L309 CfgBuilder]: Removed 10 assume(true) statements. [2023-12-20 00:42:55,321 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 12:42:55 BoogieIcfgContainer [2023-12-20 00:42:55,322 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 00:42:55,323 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 00:42:55,324 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 00:42:55,326 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 00:42:55,328 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 12:42:54" (1/3) ... [2023-12-20 00:42:55,329 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c568e73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 12:42:55, skipping insertion in model container [2023-12-20 00:42:55,329 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:42:54" (2/3) ... [2023-12-20 00:42:55,329 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c568e73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 12:42:55, skipping insertion in model container [2023-12-20 00:42:55,329 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 12:42:55" (3/3) ... [2023-12-20 00:42:55,330 INFO L112 eAbstractionObserver]: Analyzing ICFG token_ring.07.cil-2.c [2023-12-20 00:42:55,342 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 00:42:55,342 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-20 00:42:55,395 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 00:42:55,400 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;@6d98e2d5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 00:42:55,400 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-20 00:42:55,404 INFO L276 IsEmpty]: Start isEmpty. Operand has 241 states, 209 states have (on average 1.722488038277512) internal successors, (360), 213 states have internal predecessors, (360), 23 states have call successors, (23), 7 states have call predecessors, (23), 7 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2023-12-20 00:42:55,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-20 00:42:55,424 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:42:55,425 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] [2023-12-20 00:42:55,425 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:42:55,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:42:55,433 INFO L85 PathProgramCache]: Analyzing trace with hash -877910029, now seen corresponding path program 1 times [2023-12-20 00:42:55,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:42:55,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001212502] [2023-12-20 00:42:55,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:42:55,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:42:55,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:42:55,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:42:55,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:42:55,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-20 00:42:55,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:42:55,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-12-20 00:42:55,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:42:55,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-20 00:42:55,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:42:55,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-20 00:42:55,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:42:55,839 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 00:42:55,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:42:55,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001212502] [2023-12-20 00:42:55,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001212502] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:42:55,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:42:55,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 00:42:55,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229918508] [2023-12-20 00:42:55,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:42:55,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 00:42:55,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:42:55,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 00:42:55,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 00:42:55,868 INFO L87 Difference]: Start difference. First operand has 241 states, 209 states have (on average 1.722488038277512) internal successors, (360), 213 states have internal predecessors, (360), 23 states have call successors, (23), 7 states have call predecessors, (23), 7 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 3 states have internal predecessors, (100), 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 00:42:56,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:42:56,797 INFO L93 Difference]: Finished difference Result 555 states and 945 transitions. [2023-12-20 00:42:56,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 00:42:56,799 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 3 states have internal predecessors, (100), 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 111 [2023-12-20 00:42:56,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:42:56,823 INFO L225 Difference]: With dead ends: 555 [2023-12-20 00:42:56,823 INFO L226 Difference]: Without dead ends: 318 [2023-12-20 00:42:56,826 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 00:42:56,828 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 636 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 670 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 655 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-20 00:42:56,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [655 Valid, 449 Invalid, 720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 670 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-20 00:42:56,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2023-12-20 00:42:56,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 238. [2023-12-20 00:42:56,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 208 states have (on average 1.6153846153846154) internal successors, (336), 210 states have internal predecessors, (336), 23 states have call successors, (23), 7 states have call predecessors, (23), 6 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2023-12-20 00:42:56,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 380 transitions. [2023-12-20 00:42:56,869 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 380 transitions. Word has length 111 [2023-12-20 00:42:56,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:42:56,870 INFO L495 AbstractCegarLoop]: Abstraction has 238 states and 380 transitions. [2023-12-20 00:42:56,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 3 states have internal predecessors, (100), 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 00:42:56,870 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 380 transitions. [2023-12-20 00:42:56,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-20 00:42:56,872 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:42:56,872 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] [2023-12-20 00:42:56,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 00:42:56,872 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:42:56,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:42:56,873 INFO L85 PathProgramCache]: Analyzing trace with hash 2027763253, now seen corresponding path program 1 times [2023-12-20 00:42:56,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:42:56,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911240981] [2023-12-20 00:42:56,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:42:56,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:42:56,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:42:56,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:42:56,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:42:56,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-20 00:42:56,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:42:57,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-12-20 00:42:57,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:42:57,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-20 00:42:57,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:42:57,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-20 00:42:57,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:42:57,045 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 00:42:57,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:42:57,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911240981] [2023-12-20 00:42:57,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911240981] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:42:57,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:42:57,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 00:42:57,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246868220] [2023-12-20 00:42:57,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:42:57,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 00:42:57,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:42:57,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 00:42:57,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-20 00:42:57,052 INFO L87 Difference]: Start difference. First operand 238 states and 380 transitions. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 4 states have internal predecessors, (100), 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 00:42:58,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:42:58,261 INFO L93 Difference]: Finished difference Result 857 states and 1400 transitions. [2023-12-20 00:42:58,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-20 00:42:58,262 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 4 states have internal predecessors, (100), 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 111 [2023-12-20 00:42:58,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:42:58,267 INFO L225 Difference]: With dead ends: 857 [2023-12-20 00:42:58,267 INFO L226 Difference]: Without dead ends: 632 [2023-12-20 00:42:58,268 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-12-20 00:42:58,270 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 954 mSDsluCounter, 559 mSDsCounter, 0 mSdLazyCounter, 1449 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 968 SdHoareTripleChecker+Valid, 750 SdHoareTripleChecker+Invalid, 1545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 1449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-20 00:42:58,270 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [968 Valid, 750 Invalid, 1545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 1449 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-20 00:42:58,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2023-12-20 00:42:58,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 471. [2023-12-20 00:42:58,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471 states, 418 states have (on average 1.624401913875598) internal successors, (679), 421 states have internal predecessors, (679), 39 states have call successors, (39), 13 states have call predecessors, (39), 13 states have return successors, (40), 37 states have call predecessors, (40), 37 states have call successors, (40) [2023-12-20 00:42:58,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 758 transitions. [2023-12-20 00:42:58,322 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 758 transitions. Word has length 111 [2023-12-20 00:42:58,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:42:58,322 INFO L495 AbstractCegarLoop]: Abstraction has 471 states and 758 transitions. [2023-12-20 00:42:58,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 4 states have internal predecessors, (100), 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 00:42:58,322 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 758 transitions. [2023-12-20 00:42:58,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-20 00:42:58,327 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:42:58,328 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] [2023-12-20 00:42:58,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 00:42:58,328 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:42:58,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:42:58,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1272951247, now seen corresponding path program 1 times [2023-12-20 00:42:58,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:42:58,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097933538] [2023-12-20 00:42:58,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:42:58,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:42:58,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:42:58,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:42:58,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:42:58,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-20 00:42:58,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:42:58,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-12-20 00:42:58,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:42:58,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-20 00:42:58,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:42:58,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-20 00:42:58,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:42:58,572 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 00:42:58,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:42:58,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097933538] [2023-12-20 00:42:58,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097933538] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:42:58,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:42:58,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 00:42:58,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882657177] [2023-12-20 00:42:58,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:42:58,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 00:42:58,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:42:58,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 00:42:58,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:42:58,577 INFO L87 Difference]: Start difference. First operand 471 states and 758 transitions. Second operand has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 5 states have internal predecessors, (100), 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 00:43:00,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:43:00,118 INFO L93 Difference]: Finished difference Result 1414 states and 2312 transitions. [2023-12-20 00:43:00,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 00:43:00,118 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 5 states have internal predecessors, (100), 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 111 [2023-12-20 00:43:00,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:43:00,123 INFO L225 Difference]: With dead ends: 1414 [2023-12-20 00:43:00,124 INFO L226 Difference]: Without dead ends: 956 [2023-12-20 00:43:00,126 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-20 00:43:00,128 INFO L413 NwaCegarLoop]: 335 mSDtfsCounter, 975 mSDsluCounter, 1091 mSDsCounter, 0 mSdLazyCounter, 2375 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 989 SdHoareTripleChecker+Valid, 1426 SdHoareTripleChecker+Invalid, 2431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 2375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-20 00:43:00,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [989 Valid, 1426 Invalid, 2431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 2375 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-20 00:43:00,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 956 states. [2023-12-20 00:43:00,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 956 to 688. [2023-12-20 00:43:00,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 688 states, 612 states have (on average 1.6176470588235294) internal successors, (990), 616 states have internal predecessors, (990), 55 states have call successors, (55), 19 states have call predecessors, (55), 20 states have return successors, (58), 54 states have call predecessors, (58), 53 states have call successors, (58) [2023-12-20 00:43:00,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 688 states to 688 states and 1103 transitions. [2023-12-20 00:43:00,168 INFO L78 Accepts]: Start accepts. Automaton has 688 states and 1103 transitions. Word has length 111 [2023-12-20 00:43:00,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:43:00,168 INFO L495 AbstractCegarLoop]: Abstraction has 688 states and 1103 transitions. [2023-12-20 00:43:00,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 5 states have internal predecessors, (100), 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 00:43:00,169 INFO L276 IsEmpty]: Start isEmpty. Operand 688 states and 1103 transitions. [2023-12-20 00:43:00,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-20 00:43:00,169 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:43:00,170 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] [2023-12-20 00:43:00,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 00:43:00,170 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:43:00,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:43:00,170 INFO L85 PathProgramCache]: Analyzing trace with hash 1403041135, now seen corresponding path program 1 times [2023-12-20 00:43:00,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:43:00,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332327134] [2023-12-20 00:43:00,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:43:00,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:43:00,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:00,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:43:00,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:00,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-20 00:43:00,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:00,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-12-20 00:43:00,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:00,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-20 00:43:00,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:00,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-20 00:43:00,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:00,363 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 00:43:00,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:43:00,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332327134] [2023-12-20 00:43:00,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332327134] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:43:00,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:43:00,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 00:43:00,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107832969] [2023-12-20 00:43:00,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:43:00,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 00:43:00,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:43:00,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 00:43:00,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:43:00,365 INFO L87 Difference]: Start difference. First operand 688 states and 1103 transitions. Second operand has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 5 states have internal predecessors, (100), 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 00:43:01,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:43:01,070 INFO L93 Difference]: Finished difference Result 1637 states and 2675 transitions. [2023-12-20 00:43:01,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 00:43:01,071 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 5 states have internal predecessors, (100), 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 111 [2023-12-20 00:43:01,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:43:01,075 INFO L225 Difference]: With dead ends: 1637 [2023-12-20 00:43:01,075 INFO L226 Difference]: Without dead ends: 962 [2023-12-20 00:43:01,076 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 00:43:01,080 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 800 mSDsluCounter, 425 mSDsCounter, 0 mSdLazyCounter, 1079 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 815 SdHoareTripleChecker+Valid, 603 SdHoareTripleChecker+Invalid, 1162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1079 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-20 00:43:01,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [815 Valid, 603 Invalid, 1162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1079 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-20 00:43:01,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 962 states. [2023-12-20 00:43:01,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 962 to 688. [2023-12-20 00:43:01,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 688 states, 612 states have (on average 1.6127450980392157) internal successors, (987), 616 states have internal predecessors, (987), 55 states have call successors, (55), 19 states have call predecessors, (55), 20 states have return successors, (58), 54 states have call predecessors, (58), 53 states have call successors, (58) [2023-12-20 00:43:01,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 688 states to 688 states and 1100 transitions. [2023-12-20 00:43:01,118 INFO L78 Accepts]: Start accepts. Automaton has 688 states and 1100 transitions. Word has length 111 [2023-12-20 00:43:01,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:43:01,118 INFO L495 AbstractCegarLoop]: Abstraction has 688 states and 1100 transitions. [2023-12-20 00:43:01,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 5 states have internal predecessors, (100), 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 00:43:01,118 INFO L276 IsEmpty]: Start isEmpty. Operand 688 states and 1100 transitions. [2023-12-20 00:43:01,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-20 00:43:01,119 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:43:01,119 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] [2023-12-20 00:43:01,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 00:43:01,119 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:43:01,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:43:01,120 INFO L85 PathProgramCache]: Analyzing trace with hash 519532145, now seen corresponding path program 1 times [2023-12-20 00:43:01,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:43:01,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321188598] [2023-12-20 00:43:01,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:43:01,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:43:01,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:01,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:43:01,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:01,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-20 00:43:01,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:01,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-12-20 00:43:01,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:01,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-20 00:43:01,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:01,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-20 00:43:01,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:01,275 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 00:43:01,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:43:01,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321188598] [2023-12-20 00:43:01,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321188598] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:43:01,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:43:01,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 00:43:01,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992811257] [2023-12-20 00:43:01,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:43:01,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 00:43:01,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:43:01,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 00:43:01,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:43:01,280 INFO L87 Difference]: Start difference. First operand 688 states and 1100 transitions. Second operand has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 5 states have internal predecessors, (100), 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 00:43:02,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:43:02,133 INFO L93 Difference]: Finished difference Result 1633 states and 2658 transitions. [2023-12-20 00:43:02,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 00:43:02,133 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 5 states have internal predecessors, (100), 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 111 [2023-12-20 00:43:02,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:43:02,136 INFO L225 Difference]: With dead ends: 1633 [2023-12-20 00:43:02,136 INFO L226 Difference]: Without dead ends: 958 [2023-12-20 00:43:02,137 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-20 00:43:02,138 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 700 mSDsluCounter, 542 mSDsCounter, 0 mSdLazyCounter, 1183 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 715 SdHoareTripleChecker+Valid, 720 SdHoareTripleChecker+Invalid, 1243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-20 00:43:02,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [715 Valid, 720 Invalid, 1243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1183 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-20 00:43:02,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 958 states. [2023-12-20 00:43:02,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 958 to 688. [2023-12-20 00:43:02,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 688 states, 612 states have (on average 1.607843137254902) internal successors, (984), 616 states have internal predecessors, (984), 55 states have call successors, (55), 19 states have call predecessors, (55), 20 states have return successors, (58), 54 states have call predecessors, (58), 53 states have call successors, (58) [2023-12-20 00:43:02,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 688 states to 688 states and 1097 transitions. [2023-12-20 00:43:02,159 INFO L78 Accepts]: Start accepts. Automaton has 688 states and 1097 transitions. Word has length 111 [2023-12-20 00:43:02,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:43:02,159 INFO L495 AbstractCegarLoop]: Abstraction has 688 states and 1097 transitions. [2023-12-20 00:43:02,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 5 states have internal predecessors, (100), 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 00:43:02,160 INFO L276 IsEmpty]: Start isEmpty. Operand 688 states and 1097 transitions. [2023-12-20 00:43:02,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-20 00:43:02,160 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:43:02,160 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] [2023-12-20 00:43:02,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 00:43:02,161 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:43:02,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:43:02,161 INFO L85 PathProgramCache]: Analyzing trace with hash 491031855, now seen corresponding path program 1 times [2023-12-20 00:43:02,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:43:02,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109038073] [2023-12-20 00:43:02,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:43:02,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:43:02,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:02,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:43:02,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:02,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-20 00:43:02,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:02,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-12-20 00:43:02,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:02,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-20 00:43:02,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:02,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-20 00:43:02,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:02,270 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 00:43:02,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:43:02,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109038073] [2023-12-20 00:43:02,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109038073] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:43:02,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:43:02,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 00:43:02,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908919888] [2023-12-20 00:43:02,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:43:02,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 00:43:02,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:43:02,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 00:43:02,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:43:02,271 INFO L87 Difference]: Start difference. First operand 688 states and 1097 transitions. Second operand has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 5 states have internal predecessors, (100), 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 00:43:03,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:43:03,029 INFO L93 Difference]: Finished difference Result 1629 states and 2641 transitions. [2023-12-20 00:43:03,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 00:43:03,029 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 5 states have internal predecessors, (100), 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 111 [2023-12-20 00:43:03,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:43:03,032 INFO L225 Difference]: With dead ends: 1629 [2023-12-20 00:43:03,032 INFO L226 Difference]: Without dead ends: 954 [2023-12-20 00:43:03,033 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 00:43:03,034 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 796 mSDsluCounter, 425 mSDsCounter, 0 mSdLazyCounter, 1051 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 811 SdHoareTripleChecker+Valid, 603 SdHoareTripleChecker+Invalid, 1134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1051 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-20 00:43:03,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [811 Valid, 603 Invalid, 1134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1051 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-20 00:43:03,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 954 states. [2023-12-20 00:43:03,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 954 to 688. [2023-12-20 00:43:03,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 688 states, 612 states have (on average 1.6029411764705883) internal successors, (981), 616 states have internal predecessors, (981), 55 states have call successors, (55), 19 states have call predecessors, (55), 20 states have return successors, (58), 54 states have call predecessors, (58), 53 states have call successors, (58) [2023-12-20 00:43:03,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 688 states to 688 states and 1094 transitions. [2023-12-20 00:43:03,055 INFO L78 Accepts]: Start accepts. Automaton has 688 states and 1094 transitions. Word has length 111 [2023-12-20 00:43:03,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:43:03,055 INFO L495 AbstractCegarLoop]: Abstraction has 688 states and 1094 transitions. [2023-12-20 00:43:03,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 5 states have internal predecessors, (100), 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 00:43:03,056 INFO L276 IsEmpty]: Start isEmpty. Operand 688 states and 1094 transitions. [2023-12-20 00:43:03,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-20 00:43:03,056 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:43:03,056 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] [2023-12-20 00:43:03,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 00:43:03,057 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:43:03,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:43:03,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1449550159, now seen corresponding path program 1 times [2023-12-20 00:43:03,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:43:03,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982551012] [2023-12-20 00:43:03,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:43:03,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:43:03,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:03,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:43:03,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:03,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-20 00:43:03,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:03,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-12-20 00:43:03,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:03,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-20 00:43:03,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:03,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-20 00:43:03,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:03,172 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 00:43:03,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:43:03,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982551012] [2023-12-20 00:43:03,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982551012] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:43:03,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:43:03,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 00:43:03,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111154322] [2023-12-20 00:43:03,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:43:03,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 00:43:03,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:43:03,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 00:43:03,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:43:03,173 INFO L87 Difference]: Start difference. First operand 688 states and 1094 transitions. Second operand has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 5 states have internal predecessors, (100), 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 00:43:04,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:43:04,709 INFO L93 Difference]: Finished difference Result 2216 states and 3569 transitions. [2023-12-20 00:43:04,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 00:43:04,709 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 5 states have internal predecessors, (100), 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 111 [2023-12-20 00:43:04,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:43:04,714 INFO L225 Difference]: With dead ends: 2216 [2023-12-20 00:43:04,714 INFO L226 Difference]: Without dead ends: 1541 [2023-12-20 00:43:04,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-20 00:43:04,716 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 1008 mSDsluCounter, 716 mSDsCounter, 0 mSdLazyCounter, 1869 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1022 SdHoareTripleChecker+Valid, 905 SdHoareTripleChecker+Invalid, 1965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 1869 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-20 00:43:04,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1022 Valid, 905 Invalid, 1965 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 1869 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-20 00:43:04,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1541 states. [2023-12-20 00:43:04,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1541 to 1134. [2023-12-20 00:43:04,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1134 states, 1012 states have (on average 1.5948616600790513) internal successors, (1614), 1018 states have internal predecessors, (1614), 87 states have call successors, (87), 31 states have call predecessors, (87), 34 states have return successors, (98), 88 states have call predecessors, (98), 85 states have call successors, (98) [2023-12-20 00:43:04,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1134 states to 1134 states and 1799 transitions. [2023-12-20 00:43:04,749 INFO L78 Accepts]: Start accepts. Automaton has 1134 states and 1799 transitions. Word has length 111 [2023-12-20 00:43:04,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:43:04,749 INFO L495 AbstractCegarLoop]: Abstraction has 1134 states and 1799 transitions. [2023-12-20 00:43:04,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 5 states have internal predecessors, (100), 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 00:43:04,750 INFO L276 IsEmpty]: Start isEmpty. Operand 1134 states and 1799 transitions. [2023-12-20 00:43:04,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-20 00:43:04,751 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:43:04,751 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:43:04,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-20 00:43:04,751 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:43:04,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:43:04,751 INFO L85 PathProgramCache]: Analyzing trace with hash 427513071, now seen corresponding path program 1 times [2023-12-20 00:43:04,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:43:04,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070289390] [2023-12-20 00:43:04,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:43:04,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:43:04,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:04,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:43:04,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:04,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-20 00:43:04,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:04,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-12-20 00:43:04,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:04,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-20 00:43:04,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:04,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-20 00:43:04,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:04,861 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 00:43:04,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:43:04,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070289390] [2023-12-20 00:43:04,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070289390] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:43:04,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:43:04,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 00:43:04,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107642335] [2023-12-20 00:43:04,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:43:04,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 00:43:04,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:43:04,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 00:43:04,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:43:04,863 INFO L87 Difference]: Start difference. First operand 1134 states and 1799 transitions. Second operand has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 5 states have internal predecessors, (100), 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 00:43:05,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:43:05,711 INFO L93 Difference]: Finished difference Result 2647 states and 4260 transitions. [2023-12-20 00:43:05,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 00:43:05,712 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 5 states have internal predecessors, (100), 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 111 [2023-12-20 00:43:05,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:43:05,716 INFO L225 Difference]: With dead ends: 2647 [2023-12-20 00:43:05,716 INFO L226 Difference]: Without dead ends: 1526 [2023-12-20 00:43:05,718 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 00:43:05,719 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 697 mSDsluCounter, 542 mSDsCounter, 0 mSdLazyCounter, 1141 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 712 SdHoareTripleChecker+Valid, 720 SdHoareTripleChecker+Invalid, 1201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-20 00:43:05,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [712 Valid, 720 Invalid, 1201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1141 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-20 00:43:05,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1526 states. [2023-12-20 00:43:05,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1526 to 1134. [2023-12-20 00:43:05,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1134 states, 1012 states have (on average 1.5899209486166008) internal successors, (1609), 1018 states have internal predecessors, (1609), 87 states have call successors, (87), 31 states have call predecessors, (87), 34 states have return successors, (98), 88 states have call predecessors, (98), 85 states have call successors, (98) [2023-12-20 00:43:05,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1134 states to 1134 states and 1794 transitions. [2023-12-20 00:43:05,754 INFO L78 Accepts]: Start accepts. Automaton has 1134 states and 1794 transitions. Word has length 111 [2023-12-20 00:43:05,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:43:05,754 INFO L495 AbstractCegarLoop]: Abstraction has 1134 states and 1794 transitions. [2023-12-20 00:43:05,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 5 states have internal predecessors, (100), 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 00:43:05,755 INFO L276 IsEmpty]: Start isEmpty. Operand 1134 states and 1794 transitions. [2023-12-20 00:43:05,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-20 00:43:05,755 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:43:05,756 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] [2023-12-20 00:43:05,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-20 00:43:05,756 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:43:05,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:43:05,756 INFO L85 PathProgramCache]: Analyzing trace with hash -343220495, now seen corresponding path program 1 times [2023-12-20 00:43:05,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:43:05,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164225012] [2023-12-20 00:43:05,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:43:05,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:43:05,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:05,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:43:05,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:05,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-20 00:43:05,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:05,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-12-20 00:43:05,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:05,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-20 00:43:05,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:05,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-20 00:43:05,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:05,895 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 00:43:05,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:43:05,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164225012] [2023-12-20 00:43:05,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164225012] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:43:05,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:43:05,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 00:43:05,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571876065] [2023-12-20 00:43:05,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:43:05,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 00:43:05,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:43:05,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 00:43:05,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:43:05,897 INFO L87 Difference]: Start difference. First operand 1134 states and 1794 transitions. Second operand has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 5 states have internal predecessors, (100), 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 00:43:07,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:43:07,664 INFO L93 Difference]: Finished difference Result 4152 states and 6640 transitions. [2023-12-20 00:43:07,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 00:43:07,665 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 5 states have internal predecessors, (100), 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 111 [2023-12-20 00:43:07,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:43:07,691 INFO L225 Difference]: With dead ends: 4152 [2023-12-20 00:43:07,693 INFO L226 Difference]: Without dead ends: 3031 [2023-12-20 00:43:07,698 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-20 00:43:07,700 INFO L413 NwaCegarLoop]: 331 mSDtfsCounter, 1206 mSDsluCounter, 1086 mSDsCounter, 0 mSdLazyCounter, 2222 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1228 SdHoareTripleChecker+Valid, 1417 SdHoareTripleChecker+Invalid, 2283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 2222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-20 00:43:07,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1228 Valid, 1417 Invalid, 2283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 2222 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-20 00:43:07,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3031 states. [2023-12-20 00:43:07,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3031 to 2020. [2023-12-20 00:43:07,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2020 states, 1810 states have (on average 1.5828729281767955) internal successors, (2865), 1820 states have internal predecessors, (2865), 147 states have call successors, (147), 55 states have call predecessors, (147), 62 states have return successors, (180), 152 states have call predecessors, (180), 145 states have call successors, (180) [2023-12-20 00:43:07,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2020 states to 2020 states and 3192 transitions. [2023-12-20 00:43:07,778 INFO L78 Accepts]: Start accepts. Automaton has 2020 states and 3192 transitions. Word has length 111 [2023-12-20 00:43:07,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:43:07,778 INFO L495 AbstractCegarLoop]: Abstraction has 2020 states and 3192 transitions. [2023-12-20 00:43:07,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 5 states have internal predecessors, (100), 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 00:43:07,778 INFO L276 IsEmpty]: Start isEmpty. Operand 2020 states and 3192 transitions. [2023-12-20 00:43:07,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-20 00:43:07,780 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:43:07,780 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:43:07,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-20 00:43:07,780 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:43:07,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:43:07,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1337914193, now seen corresponding path program 1 times [2023-12-20 00:43:07,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:43:07,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867787252] [2023-12-20 00:43:07,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:43:07,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:43:07,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:07,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:43:07,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:07,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-20 00:43:07,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:07,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-12-20 00:43:07,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:07,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-20 00:43:07,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:07,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-20 00:43:07,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:07,884 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 00:43:07,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:43:07,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867787252] [2023-12-20 00:43:07,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867787252] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:43:07,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:43:07,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 00:43:07,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446559033] [2023-12-20 00:43:07,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:43:07,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 00:43:07,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:43:07,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 00:43:07,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:43:07,885 INFO L87 Difference]: Start difference. First operand 2020 states and 3192 transitions. Second operand has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 5 states have internal predecessors, (100), 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 00:43:08,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:43:08,647 INFO L93 Difference]: Finished difference Result 4649 states and 7435 transitions. [2023-12-20 00:43:08,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 00:43:08,648 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 5 states have internal predecessors, (100), 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 111 [2023-12-20 00:43:08,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:43:08,656 INFO L225 Difference]: With dead ends: 4649 [2023-12-20 00:43:08,656 INFO L226 Difference]: Without dead ends: 2642 [2023-12-20 00:43:08,660 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-20 00:43:08,661 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 698 mSDsluCounter, 541 mSDsCounter, 0 mSdLazyCounter, 1103 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 713 SdHoareTripleChecker+Valid, 719 SdHoareTripleChecker+Invalid, 1165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-20 00:43:08,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [713 Valid, 719 Invalid, 1165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1103 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-20 00:43:08,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2642 states. [2023-12-20 00:43:08,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2642 to 2020. [2023-12-20 00:43:08,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2020 states, 1810 states have (on average 1.5779005524861878) internal successors, (2856), 1820 states have internal predecessors, (2856), 147 states have call successors, (147), 55 states have call predecessors, (147), 62 states have return successors, (180), 152 states have call predecessors, (180), 145 states have call successors, (180) [2023-12-20 00:43:08,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2020 states to 2020 states and 3183 transitions. [2023-12-20 00:43:08,751 INFO L78 Accepts]: Start accepts. Automaton has 2020 states and 3183 transitions. Word has length 111 [2023-12-20 00:43:08,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:43:08,752 INFO L495 AbstractCegarLoop]: Abstraction has 2020 states and 3183 transitions. [2023-12-20 00:43:08,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 5 states have internal predecessors, (100), 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 00:43:08,752 INFO L276 IsEmpty]: Start isEmpty. Operand 2020 states and 3183 transitions. [2023-12-20 00:43:08,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-20 00:43:08,755 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:43:08,755 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] [2023-12-20 00:43:08,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-20 00:43:08,755 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:43:08,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:43:08,756 INFO L85 PathProgramCache]: Analyzing trace with hash 998478317, now seen corresponding path program 1 times [2023-12-20 00:43:08,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:43:08,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511445345] [2023-12-20 00:43:08,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:43:08,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:43:08,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:08,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:43:08,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:08,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-20 00:43:08,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:08,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-12-20 00:43:08,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:08,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-20 00:43:08,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:08,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-20 00:43:08,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:08,888 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 00:43:08,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:43:08,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511445345] [2023-12-20 00:43:08,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511445345] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:43:08,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:43:08,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 00:43:08,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543566565] [2023-12-20 00:43:08,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:43:08,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 00:43:08,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:43:08,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 00:43:08,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:43:08,890 INFO L87 Difference]: Start difference. First operand 2020 states and 3183 transitions. Second operand has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 5 states have internal predecessors, (100), 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 00:43:10,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:43:10,688 INFO L93 Difference]: Finished difference Result 7348 states and 11704 transitions. [2023-12-20 00:43:10,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 00:43:10,689 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 5 states have internal predecessors, (100), 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 111 [2023-12-20 00:43:10,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:43:10,707 INFO L225 Difference]: With dead ends: 7348 [2023-12-20 00:43:10,708 INFO L226 Difference]: Without dead ends: 5341 [2023-12-20 00:43:10,712 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-20 00:43:10,713 INFO L413 NwaCegarLoop]: 331 mSDtfsCounter, 1089 mSDsluCounter, 1086 mSDsCounter, 0 mSdLazyCounter, 2170 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1111 SdHoareTripleChecker+Valid, 1417 SdHoareTripleChecker+Invalid, 2231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 2170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-20 00:43:10,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1111 Valid, 1417 Invalid, 2231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 2170 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-20 00:43:10,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5341 states. [2023-12-20 00:43:10,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5341 to 3807. [2023-12-20 00:43:10,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3807 states, 3425 states have (on average 1.5737226277372263) internal successors, (5390), 3443 states have internal predecessors, (5390), 263 states have call successors, (263), 103 states have call predecessors, (263), 118 states have return successors, (358), 276 states have call predecessors, (358), 261 states have call successors, (358) [2023-12-20 00:43:10,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3807 states to 3807 states and 6011 transitions. [2023-12-20 00:43:10,864 INFO L78 Accepts]: Start accepts. Automaton has 3807 states and 6011 transitions. Word has length 111 [2023-12-20 00:43:10,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:43:10,865 INFO L495 AbstractCegarLoop]: Abstraction has 3807 states and 6011 transitions. [2023-12-20 00:43:10,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 5 states have internal predecessors, (100), 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 00:43:10,865 INFO L276 IsEmpty]: Start isEmpty. Operand 3807 states and 6011 transitions. [2023-12-20 00:43:10,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-20 00:43:10,867 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:43:10,867 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] [2023-12-20 00:43:10,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-20 00:43:10,867 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:43:10,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:43:10,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1420006161, now seen corresponding path program 1 times [2023-12-20 00:43:10,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:43:10,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182842848] [2023-12-20 00:43:10,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:43:10,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:43:10,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:10,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:43:10,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:10,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-20 00:43:10,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:10,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-12-20 00:43:10,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:10,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-20 00:43:11,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:11,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-20 00:43:11,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:11,004 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 00:43:11,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:43:11,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182842848] [2023-12-20 00:43:11,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182842848] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:43:11,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:43:11,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 00:43:11,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301059878] [2023-12-20 00:43:11,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:43:11,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 00:43:11,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:43:11,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 00:43:11,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:43:11,005 INFO L87 Difference]: Start difference. First operand 3807 states and 6011 transitions. Second operand has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 5 states have internal predecessors, (100), 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 00:43:12,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:43:12,733 INFO L93 Difference]: Finished difference Result 13837 states and 22082 transitions. [2023-12-20 00:43:12,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 00:43:12,734 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 5 states have internal predecessors, (100), 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 111 [2023-12-20 00:43:12,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:43:12,810 INFO L225 Difference]: With dead ends: 13837 [2023-12-20 00:43:12,810 INFO L226 Difference]: Without dead ends: 10043 [2023-12-20 00:43:12,826 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-20 00:43:12,827 INFO L413 NwaCegarLoop]: 331 mSDtfsCounter, 963 mSDsluCounter, 1086 mSDsCounter, 0 mSdLazyCounter, 2416 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 976 SdHoareTripleChecker+Valid, 1417 SdHoareTripleChecker+Invalid, 2476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 2416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-20 00:43:12,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [976 Valid, 1417 Invalid, 2476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 2416 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-20 00:43:12,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10043 states. [2023-12-20 00:43:13,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10043 to 7376. [2023-12-20 00:43:13,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7376 states, 6658 states have (on average 1.5716431360768999) internal successors, (10464), 6692 states have internal predecessors, (10464), 487 states have call successors, (487), 199 states have call predecessors, (487), 230 states have return successors, (760), 516 states have call predecessors, (760), 485 states have call successors, (760) [2023-12-20 00:43:13,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7376 states to 7376 states and 11711 transitions. [2023-12-20 00:43:13,155 INFO L78 Accepts]: Start accepts. Automaton has 7376 states and 11711 transitions. Word has length 111 [2023-12-20 00:43:13,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:43:13,156 INFO L495 AbstractCegarLoop]: Abstraction has 7376 states and 11711 transitions. [2023-12-20 00:43:13,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 5 states have internal predecessors, (100), 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 00:43:13,156 INFO L276 IsEmpty]: Start isEmpty. Operand 7376 states and 11711 transitions. [2023-12-20 00:43:13,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-20 00:43:13,161 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:43:13,161 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] [2023-12-20 00:43:13,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-20 00:43:13,161 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:43:13,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:43:13,161 INFO L85 PathProgramCache]: Analyzing trace with hash 995830189, now seen corresponding path program 1 times [2023-12-20 00:43:13,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:43:13,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113928200] [2023-12-20 00:43:13,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:43:13,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:43:13,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:13,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:43:13,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:13,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-20 00:43:13,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:13,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-12-20 00:43:13,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:13,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-20 00:43:13,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:13,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-20 00:43:13,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:13,258 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 00:43:13,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:43:13,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113928200] [2023-12-20 00:43:13,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113928200] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:43:13,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:43:13,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 00:43:13,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525179675] [2023-12-20 00:43:13,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:43:13,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 00:43:13,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:43:13,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 00:43:13,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:43:13,259 INFO L87 Difference]: Start difference. First operand 7376 states and 11711 transitions. Second operand has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 5 states have internal predecessors, (100), 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 00:43:14,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:43:14,026 INFO L93 Difference]: Finished difference Result 16659 states and 26752 transitions. [2023-12-20 00:43:14,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 00:43:14,026 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 5 states have internal predecessors, (100), 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 111 [2023-12-20 00:43:14,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:43:14,057 INFO L225 Difference]: With dead ends: 16659 [2023-12-20 00:43:14,057 INFO L226 Difference]: Without dead ends: 9296 [2023-12-20 00:43:14,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-20 00:43:14,072 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 796 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 967 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 811 SdHoareTripleChecker+Valid, 602 SdHoareTripleChecker+Invalid, 1052 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 967 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-20 00:43:14,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [811 Valid, 602 Invalid, 1052 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 967 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-20 00:43:14,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9296 states. [2023-12-20 00:43:14,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9296 to 7376. [2023-12-20 00:43:14,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7376 states, 6658 states have (on average 1.5666866927005108) internal successors, (10431), 6692 states have internal predecessors, (10431), 487 states have call successors, (487), 199 states have call predecessors, (487), 230 states have return successors, (760), 516 states have call predecessors, (760), 485 states have call successors, (760) [2023-12-20 00:43:14,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7376 states to 7376 states and 11678 transitions. [2023-12-20 00:43:14,383 INFO L78 Accepts]: Start accepts. Automaton has 7376 states and 11678 transitions. Word has length 111 [2023-12-20 00:43:14,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:43:14,383 INFO L495 AbstractCegarLoop]: Abstraction has 7376 states and 11678 transitions. [2023-12-20 00:43:14,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 5 states have internal predecessors, (100), 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 00:43:14,383 INFO L276 IsEmpty]: Start isEmpty. Operand 7376 states and 11678 transitions. [2023-12-20 00:43:14,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-20 00:43:14,388 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:43:14,388 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] [2023-12-20 00:43:14,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-20 00:43:14,388 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:43:14,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:43:14,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1974280913, now seen corresponding path program 1 times [2023-12-20 00:43:14,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:43:14,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275245290] [2023-12-20 00:43:14,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:43:14,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:43:14,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:14,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:43:14,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:14,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-20 00:43:14,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:14,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-12-20 00:43:14,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:14,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-20 00:43:14,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:14,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-20 00:43:14,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:14,540 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 00:43:14,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:43:14,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275245290] [2023-12-20 00:43:14,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275245290] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:43:14,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:43:14,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 00:43:14,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283378754] [2023-12-20 00:43:14,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:43:14,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 00:43:14,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:43:14,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 00:43:14,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:43:14,542 INFO L87 Difference]: Start difference. First operand 7376 states and 11678 transitions. Second operand has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 5 states have internal predecessors, (100), 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 00:43:16,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:43:16,647 INFO L93 Difference]: Finished difference Result 26154 states and 41824 transitions. [2023-12-20 00:43:16,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 00:43:16,648 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 5 states have internal predecessors, (100), 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 111 [2023-12-20 00:43:16,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:43:16,694 INFO L225 Difference]: With dead ends: 26154 [2023-12-20 00:43:16,694 INFO L226 Difference]: Without dead ends: 18791 [2023-12-20 00:43:16,712 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-20 00:43:16,713 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 980 mSDsluCounter, 714 mSDsCounter, 0 mSdLazyCounter, 1942 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 993 SdHoareTripleChecker+Valid, 905 SdHoareTripleChecker+Invalid, 2038 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 1942 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-20 00:43:16,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [993 Valid, 905 Invalid, 2038 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 1942 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-20 00:43:16,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18791 states. [2023-12-20 00:43:17,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18791 to 14546. [2023-12-20 00:43:17,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14546 states, 13172 states have (on average 1.5647585788035225) internal successors, (20611), 13238 states have internal predecessors, (20611), 919 states have call successors, (919), 391 states have call predecessors, (919), 454 states have return successors, (1710), 980 states have call predecessors, (1710), 917 states have call successors, (1710) [2023-12-20 00:43:17,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14546 states to 14546 states and 23240 transitions. [2023-12-20 00:43:17,225 INFO L78 Accepts]: Start accepts. Automaton has 14546 states and 23240 transitions. Word has length 111 [2023-12-20 00:43:17,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:43:17,226 INFO L495 AbstractCegarLoop]: Abstraction has 14546 states and 23240 transitions. [2023-12-20 00:43:17,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 5 states have internal predecessors, (100), 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 00:43:17,226 INFO L276 IsEmpty]: Start isEmpty. Operand 14546 states and 23240 transitions. [2023-12-20 00:43:17,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-20 00:43:17,235 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:43:17,235 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] [2023-12-20 00:43:17,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-20 00:43:17,235 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:43:17,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:43:17,235 INFO L85 PathProgramCache]: Analyzing trace with hash -407522963, now seen corresponding path program 1 times [2023-12-20 00:43:17,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:43:17,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176642070] [2023-12-20 00:43:17,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:43:17,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:43:17,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:17,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:43:17,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:17,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-20 00:43:17,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:17,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-12-20 00:43:17,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:17,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-20 00:43:17,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:17,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-20 00:43:17,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:17,342 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 00:43:17,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:43:17,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176642070] [2023-12-20 00:43:17,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176642070] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:43:17,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:43:17,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 00:43:17,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310405638] [2023-12-20 00:43:17,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:43:17,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 00:43:17,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:43:17,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 00:43:17,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:43:17,344 INFO L87 Difference]: Start difference. First operand 14546 states and 23240 transitions. Second operand has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 5 states have internal predecessors, (100), 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 00:43:19,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:43:19,771 INFO L93 Difference]: Finished difference Result 50762 states and 81976 transitions. [2023-12-20 00:43:19,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 00:43:19,772 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 5 states have internal predecessors, (100), 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 111 [2023-12-20 00:43:19,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:43:19,864 INFO L225 Difference]: With dead ends: 50762 [2023-12-20 00:43:19,864 INFO L226 Difference]: Without dead ends: 36229 [2023-12-20 00:43:19,901 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-20 00:43:19,902 INFO L413 NwaCegarLoop]: 331 mSDtfsCounter, 936 mSDsluCounter, 1086 mSDsCounter, 0 mSdLazyCounter, 2104 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 958 SdHoareTripleChecker+Valid, 1417 SdHoareTripleChecker+Invalid, 2166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 2104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-20 00:43:19,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [958 Valid, 1417 Invalid, 2166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 2104 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-20 00:43:19,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36229 states. [2023-12-20 00:43:20,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36229 to 28883. [2023-12-20 00:43:20,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28883 states, 26229 states have (on average 1.5642609325555683) internal successors, (41029), 26359 states have internal predecessors, (41029), 1751 states have call successors, (1751), 775 states have call predecessors, (1751), 902 states have return successors, (4064), 1876 states have call predecessors, (4064), 1749 states have call successors, (4064) [2023-12-20 00:43:21,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28883 states to 28883 states and 46844 transitions. [2023-12-20 00:43:21,036 INFO L78 Accepts]: Start accepts. Automaton has 28883 states and 46844 transitions. Word has length 111 [2023-12-20 00:43:21,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:43:21,036 INFO L495 AbstractCegarLoop]: Abstraction has 28883 states and 46844 transitions. [2023-12-20 00:43:21,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 5 states have internal predecessors, (100), 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 00:43:21,036 INFO L276 IsEmpty]: Start isEmpty. Operand 28883 states and 46844 transitions. [2023-12-20 00:43:21,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-20 00:43:21,051 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:43:21,051 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] [2023-12-20 00:43:21,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-20 00:43:21,052 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:43:21,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:43:21,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1465361041, now seen corresponding path program 1 times [2023-12-20 00:43:21,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:43:21,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722038586] [2023-12-20 00:43:21,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:43:21,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:43:21,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:21,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:43:21,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:21,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-20 00:43:21,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:21,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-12-20 00:43:21,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:21,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-20 00:43:21,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:21,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-20 00:43:21,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:21,142 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 00:43:21,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:43:21,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722038586] [2023-12-20 00:43:21,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722038586] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:43:21,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:43:21,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 00:43:21,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225030018] [2023-12-20 00:43:21,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:43:21,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 00:43:21,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:43:21,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 00:43:21,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-20 00:43:21,144 INFO L87 Difference]: Start difference. First operand 28883 states and 46844 transitions. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 4 states have internal predecessors, (100), 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 00:43:24,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:43:24,426 INFO L93 Difference]: Finished difference Result 98303 states and 159170 transitions. [2023-12-20 00:43:24,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-20 00:43:24,427 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 4 states have internal predecessors, (100), 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 111 [2023-12-20 00:43:24,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:43:24,725 INFO L225 Difference]: With dead ends: 98303 [2023-12-20 00:43:24,725 INFO L226 Difference]: Without dead ends: 69434 [2023-12-20 00:43:24,771 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-12-20 00:43:24,771 INFO L413 NwaCegarLoop]: 374 mSDtfsCounter, 1198 mSDsluCounter, 681 mSDsCounter, 0 mSdLazyCounter, 1887 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1234 SdHoareTripleChecker+Valid, 1055 SdHoareTripleChecker+Invalid, 1978 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1887 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-20 00:43:24,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1234 Valid, 1055 Invalid, 1978 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1887 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-20 00:43:24,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69434 states. [2023-12-20 00:43:27,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69434 to 56457. [2023-12-20 00:43:27,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56457 states, 51156 states have (on average 1.5507467354757996) internal successors, (79330), 51543 states have internal predecessors, (79330), 3496 states have call successors, (3496), 1549 states have call predecessors, (3496), 1804 states have return successors, (7997), 3492 states have call predecessors, (7997), 3494 states have call successors, (7997) [2023-12-20 00:43:27,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56457 states to 56457 states and 90823 transitions. [2023-12-20 00:43:27,179 INFO L78 Accepts]: Start accepts. Automaton has 56457 states and 90823 transitions. Word has length 111 [2023-12-20 00:43:27,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:43:27,179 INFO L495 AbstractCegarLoop]: Abstraction has 56457 states and 90823 transitions. [2023-12-20 00:43:27,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 4 states have internal predecessors, (100), 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 00:43:27,179 INFO L276 IsEmpty]: Start isEmpty. Operand 56457 states and 90823 transitions. [2023-12-20 00:43:27,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-12-20 00:43:27,251 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:43:27,251 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:43:27,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-20 00:43:27,251 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:43:27,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:43:27,252 INFO L85 PathProgramCache]: Analyzing trace with hash -214330943, now seen corresponding path program 1 times [2023-12-20 00:43:27,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:43:27,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051660037] [2023-12-20 00:43:27,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:43:27,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:43:27,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:27,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:43:27,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:27,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-20 00:43:27,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:27,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-12-20 00:43:27,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:27,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-20 00:43:27,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:27,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-20 00:43:27,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:27,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-20 00:43:27,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:27,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-20 00:43:27,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:27,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-12-20 00:43:27,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:27,367 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-20 00:43:27,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:43:27,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051660037] [2023-12-20 00:43:27,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051660037] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 00:43:27,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [300551650] [2023-12-20 00:43:27,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:43:27,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 00:43:27,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 00:43:27,370 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 00:43:27,373 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-20 00:43:27,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:27,517 INFO L262 TraceCheckSpWp]: Trace formula consists of 773 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 00:43:27,526 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 00:43:27,587 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-12-20 00:43:27,587 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 00:43:27,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [300551650] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:43:27,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 00:43:27,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-12-20 00:43:27,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866380794] [2023-12-20 00:43:27,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:43:27,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 00:43:27,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:43:27,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 00:43:27,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:43:27,589 INFO L87 Difference]: Start difference. First operand 56457 states and 90823 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 2 states have internal predecessors, (125), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-20 00:43:31,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:43:31,193 INFO L93 Difference]: Finished difference Result 168566 states and 272941 transitions. [2023-12-20 00:43:31,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 00:43:31,194 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 2 states have internal predecessors, (125), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 179 [2023-12-20 00:43:31,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:43:31,494 INFO L225 Difference]: With dead ends: 168566 [2023-12-20 00:43:31,494 INFO L226 Difference]: Without dead ends: 112123 [2023-12-20 00:43:31,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:43:31,587 INFO L413 NwaCegarLoop]: 396 mSDtfsCounter, 320 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 712 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 00:43:31,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [320 Valid, 712 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 00:43:31,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112123 states. [2023-12-20 00:43:35,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112123 to 111861. [2023-12-20 00:43:35,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111861 states, 101396 states have (on average 1.5480196457453943) internal successors, (156963), 102168 states have internal predecessors, (156963), 6856 states have call successors, (6856), 3097 states have call predecessors, (6856), 3608 states have return successors, (15733), 6723 states have call predecessors, (15733), 6854 states have call successors, (15733) [2023-12-20 00:43:35,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111861 states to 111861 states and 179552 transitions. [2023-12-20 00:43:35,885 INFO L78 Accepts]: Start accepts. Automaton has 111861 states and 179552 transitions. Word has length 179 [2023-12-20 00:43:35,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:43:35,886 INFO L495 AbstractCegarLoop]: Abstraction has 111861 states and 179552 transitions. [2023-12-20 00:43:35,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 2 states have internal predecessors, (125), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-20 00:43:35,886 INFO L276 IsEmpty]: Start isEmpty. Operand 111861 states and 179552 transitions. [2023-12-20 00:43:36,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-12-20 00:43:36,024 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:43:36,025 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:43:36,031 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-20 00:43:36,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-20 00:43:36,230 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:43:36,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:43:36,230 INFO L85 PathProgramCache]: Analyzing trace with hash 515830527, now seen corresponding path program 1 times [2023-12-20 00:43:36,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:43:36,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497390608] [2023-12-20 00:43:36,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:43:36,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:43:36,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:36,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:43:36,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:36,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-20 00:43:36,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:36,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-12-20 00:43:36,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:36,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-20 00:43:36,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:36,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-20 00:43:36,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:36,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-20 00:43:36,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:36,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-20 00:43:36,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:36,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-12-20 00:43:36,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:36,366 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-20 00:43:36,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:43:36,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497390608] [2023-12-20 00:43:36,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497390608] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 00:43:36,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [910569568] [2023-12-20 00:43:36,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:43:36,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 00:43:36,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 00:43:36,382 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 00:43:36,396 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-20 00:43:36,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:36,527 INFO L262 TraceCheckSpWp]: Trace formula consists of 767 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 00:43:36,537 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 00:43:36,591 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-12-20 00:43:36,591 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 00:43:36,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [910569568] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:43:36,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 00:43:36,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-12-20 00:43:36,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684081618] [2023-12-20 00:43:36,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:43:36,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 00:43:36,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:43:36,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 00:43:36,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:43:36,593 INFO L87 Difference]: Start difference. First operand 111861 states and 179552 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 2 states have internal predecessors, (130), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-20 00:43:43,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:43:43,564 INFO L93 Difference]: Finished difference Result 334002 states and 539646 transitions. [2023-12-20 00:43:43,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 00:43:43,565 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 2 states have internal predecessors, (130), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 179 [2023-12-20 00:43:43,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:43:44,203 INFO L225 Difference]: With dead ends: 334002 [2023-12-20 00:43:44,203 INFO L226 Difference]: Without dead ends: 222155 [2023-12-20 00:43:44,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:43:44,383 INFO L413 NwaCegarLoop]: 396 mSDtfsCounter, 315 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 712 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 00:43:44,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [315 Valid, 712 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 00:43:44,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222155 states. [2023-12-20 00:43:52,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222155 to 221635. [2023-12-20 00:43:52,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221635 states, 200972 states have (on average 1.5452451087713712) internal successors, (310551), 202514 states have internal predecessors, (310551), 13446 states have call successors, (13446), 6193 states have call predecessors, (13446), 7216 states have return successors, (31075), 13055 states have call predecessors, (31075), 13444 states have call successors, (31075) [2023-12-20 00:43:53,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221635 states to 221635 states and 355072 transitions. [2023-12-20 00:43:53,388 INFO L78 Accepts]: Start accepts. Automaton has 221635 states and 355072 transitions. Word has length 179 [2023-12-20 00:43:53,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:43:53,388 INFO L495 AbstractCegarLoop]: Abstraction has 221635 states and 355072 transitions. [2023-12-20 00:43:53,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 2 states have internal predecessors, (130), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-20 00:43:53,388 INFO L276 IsEmpty]: Start isEmpty. Operand 221635 states and 355072 transitions. [2023-12-20 00:43:53,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-12-20 00:43:53,701 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:43:53,701 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:43:53,707 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-20 00:43:53,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-20 00:43:53,907 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:43:53,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:43:53,907 INFO L85 PathProgramCache]: Analyzing trace with hash -535477503, now seen corresponding path program 1 times [2023-12-20 00:43:53,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:43:53,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511694655] [2023-12-20 00:43:53,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:43:53,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:43:53,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:53,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:43:53,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:53,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-20 00:43:53,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:54,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-12-20 00:43:54,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:54,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-20 00:43:54,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:54,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-20 00:43:54,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:54,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-20 00:43:54,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:54,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-20 00:43:54,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:54,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-12-20 00:43:54,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:54,054 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-20 00:43:54,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:43:54,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511694655] [2023-12-20 00:43:54,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511694655] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 00:43:54,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [150090152] [2023-12-20 00:43:54,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:43:54,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 00:43:54,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 00:43:54,056 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 00:43:54,057 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-20 00:43:54,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:43:54,195 INFO L262 TraceCheckSpWp]: Trace formula consists of 761 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 00:43:54,197 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 00:43:54,249 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-20 00:43:54,249 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 00:43:54,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [150090152] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:43:54,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 00:43:54,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-12-20 00:43:54,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244398868] [2023-12-20 00:43:54,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:43:54,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 00:43:54,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:43:54,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 00:43:54,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:43:54,250 INFO L87 Difference]: Start difference. First operand 221635 states and 355072 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-20 00:44:08,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:44:08,021 INFO L93 Difference]: Finished difference Result 661772 states and 1067112 transitions. [2023-12-20 00:44:08,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 00:44:08,021 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 179 [2023-12-20 00:44:08,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:44:09,708 INFO L225 Difference]: With dead ends: 661772 [2023-12-20 00:44:09,708 INFO L226 Difference]: Without dead ends: 440151 [2023-12-20 00:44:10,060 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:44:10,060 INFO L413 NwaCegarLoop]: 396 mSDtfsCounter, 305 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 712 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 00:44:10,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [305 Valid, 712 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 00:44:10,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440151 states.