/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/systemc/token_ring.04.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 11:15:45,360 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 11:15:45,415 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-21 11:15:45,421 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 11:15:45,422 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 11:15:45,445 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 11:15:45,446 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 11:15:45,446 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 11:15:45,446 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 11:15:45,449 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 11:15:45,449 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 11:15:45,449 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 11:15:45,450 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 11:15:45,451 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 11:15:45,451 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 11:15:45,451 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 11:15:45,451 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 11:15:45,451 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 11:15:45,452 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-21 11:15:45,453 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 11:15:45,453 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 11:15:45,453 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 11:15:45,454 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 11:15:45,454 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 11:15:45,454 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 11:15:45,454 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 11:15:45,454 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 11:15:45,454 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 11:15:45,455 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 11:15:45,455 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 11:15:45,456 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 11:15:45,456 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 11:15:45,456 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 11:15:45,456 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 11:15:45,456 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 11:15:45,456 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 11:15:45,456 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-21 11:15:45,456 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-21 11:15:45,456 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 11:15:45,457 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 11:15:45,457 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 11:15:45,457 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 11:15:45,458 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 11:15:45,458 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-21 11:15:45,659 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 11:15:45,675 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 11:15:45,676 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 11:15:45,677 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 11:15:45,677 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 11:15:45,678 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/token_ring.04.cil-2.c [2023-12-21 11:15:46,714 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 11:15:46,893 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 11:15:46,893 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/systemc/token_ring.04.cil-2.c [2023-12-21 11:15:46,902 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ae77e9df/43e3c70e284e430c83648eb21c08b9d1/FLAG1e93d1961 [2023-12-21 11:15:46,913 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ae77e9df/43e3c70e284e430c83648eb21c08b9d1 [2023-12-21 11:15:46,915 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 11:15:46,916 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 11:15:46,916 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 11:15:46,917 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 11:15:46,920 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 11:15:46,921 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 11:15:46" (1/1) ... [2023-12-21 11:15:46,922 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@375430fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:15:46, skipping insertion in model container [2023-12-21 11:15:46,922 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 11:15:46" (1/1) ... [2023-12-21 11:15:46,969 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 11:15:47,104 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.04.cil-2.c[671,684] [2023-12-21 11:15:47,154 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 11:15:47,163 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 11:15:47,171 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.04.cil-2.c[671,684] [2023-12-21 11:15:47,210 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 11:15:47,223 INFO L206 MainTranslator]: Completed translation [2023-12-21 11:15:47,223 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:15:47 WrapperNode [2023-12-21 11:15:47,223 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 11:15:47,224 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 11:15:47,224 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 11:15:47,224 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 11:15:47,230 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:15:47" (1/1) ... [2023-12-21 11:15:47,236 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:15:47" (1/1) ... [2023-12-21 11:15:47,266 INFO L138 Inliner]: procedures = 36, calls = 44, calls flagged for inlining = 19, calls inlined = 19, statements flattened = 405 [2023-12-21 11:15:47,266 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 11:15:47,267 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 11:15:47,267 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 11:15:47,267 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 11:15:47,279 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:15:47" (1/1) ... [2023-12-21 11:15:47,280 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:15:47" (1/1) ... [2023-12-21 11:15:47,282 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:15:47" (1/1) ... [2023-12-21 11:15:47,306 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]. [2023-12-21 11:15:47,306 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:15:47" (1/1) ... [2023-12-21 11:15:47,306 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:15:47" (1/1) ... [2023-12-21 11:15:47,310 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:15:47" (1/1) ... [2023-12-21 11:15:47,314 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:15:47" (1/1) ... [2023-12-21 11:15:47,315 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:15:47" (1/1) ... [2023-12-21 11:15:47,316 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:15:47" (1/1) ... [2023-12-21 11:15:47,318 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 11:15:47,319 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 11:15:47,319 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 11:15:47,319 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 11:15:47,319 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:15:47" (1/1) ... [2023-12-21 11:15:47,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 11:15:47,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:15:47,342 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) [2023-12-21 11:15:47,358 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 [2023-12-21 11:15:47,370 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 11:15:47,370 INFO L130 BoogieDeclarations]: Found specification of procedure error [2023-12-21 11:15:47,370 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2023-12-21 11:15:47,370 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-12-21 11:15:47,370 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-12-21 11:15:47,370 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-12-21 11:15:47,371 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-12-21 11:15:47,371 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-21 11:15:47,371 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-21 11:15:47,371 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-12-21 11:15:47,371 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-12-21 11:15:47,371 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-12-21 11:15:47,371 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-12-21 11:15:47,371 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-21 11:15:47,371 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-12-21 11:15:47,371 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-12-21 11:15:47,371 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 11:15:47,371 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 11:15:47,425 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 11:15:47,426 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 11:15:47,783 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 11:15:47,832 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 11:15:47,832 INFO L309 CfgBuilder]: Removed 7 assume(true) statements. [2023-12-21 11:15:47,832 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:15:47 BoogieIcfgContainer [2023-12-21 11:15:47,832 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 11:15:47,834 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 11:15:47,834 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 11:15:47,836 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 11:15:47,836 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 11:15:46" (1/3) ... [2023-12-21 11:15:47,837 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74690cae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 11:15:47, skipping insertion in model container [2023-12-21 11:15:47,837 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:15:47" (2/3) ... [2023-12-21 11:15:47,837 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74690cae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 11:15:47, skipping insertion in model container [2023-12-21 11:15:47,837 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:15:47" (3/3) ... [2023-12-21 11:15:47,838 INFO L112 eAbstractionObserver]: Analyzing ICFG token_ring.04.cil-2.c [2023-12-21 11:15:47,850 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 11:15:47,850 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 11:15:47,885 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 11:15:47,890 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;@12d3054f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 11:15:47,890 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 11:15:47,894 INFO L276 IsEmpty]: Start isEmpty. Operand has 172 states, 143 states have (on average 1.6993006993006994) internal successors, (243), 147 states have internal predecessors, (243), 20 states have call successors, (20), 7 states have call predecessors, (20), 7 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-21 11:15:47,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-21 11:15:47,903 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:15:47,903 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] [2023-12-21 11:15:47,905 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:15:47,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:15:47,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1753003295, now seen corresponding path program 1 times [2023-12-21 11:15:47,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:15:47,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434634726] [2023-12-21 11:15:47,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:15:47,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:15:47,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:48,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:15:48,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:48,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-21 11:15:48,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:48,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-21 11:15:48,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:48,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-21 11:15:48,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:48,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-21 11:15:48,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:48,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:15:48,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:15:48,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434634726] [2023-12-21 11:15:48,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434634726] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:15:48,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:15:48,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 11:15:48,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932898141] [2023-12-21 11:15:48,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:15:48,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 11:15:48,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:15:48,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 11:15:48,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 11:15:48,228 INFO L87 Difference]: Start difference. First operand has 172 states, 143 states have (on average 1.6993006993006994) internal successors, (243), 147 states have internal predecessors, (243), 20 states have call successors, (20), 7 states have call predecessors, (20), 7 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 3 states have internal predecessors, (70), 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) [2023-12-21 11:15:48,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:15:48,867 INFO L93 Difference]: Finished difference Result 385 states and 641 transitions. [2023-12-21 11:15:48,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 11:15:48,869 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 3 states have internal predecessors, (70), 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 81 [2023-12-21 11:15:48,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:15:48,877 INFO L225 Difference]: With dead ends: 385 [2023-12-21 11:15:48,877 INFO L226 Difference]: Without dead ends: 219 [2023-12-21 11:15:48,880 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-21 11:15:48,882 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 421 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 437 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 11:15:48,882 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [437 Valid, 326 Invalid, 480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 436 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 11:15:48,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2023-12-21 11:15:48,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 169. [2023-12-21 11:15:48,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 142 states have (on average 1.5845070422535212) internal successors, (225), 144 states have internal predecessors, (225), 20 states have call successors, (20), 7 states have call predecessors, (20), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-21 11:15:48,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 263 transitions. [2023-12-21 11:15:48,920 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 263 transitions. Word has length 81 [2023-12-21 11:15:48,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:15:48,920 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 263 transitions. [2023-12-21 11:15:48,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 3 states have internal predecessors, (70), 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) [2023-12-21 11:15:48,920 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 263 transitions. [2023-12-21 11:15:48,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-21 11:15:48,923 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:15:48,923 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] [2023-12-21 11:15:48,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-21 11:15:48,923 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:15:48,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:15:48,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1676102497, now seen corresponding path program 1 times [2023-12-21 11:15:48,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:15:48,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501791520] [2023-12-21 11:15:48,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:15:48,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:15:48,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:49,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:15:49,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:49,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-21 11:15:49,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:49,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-21 11:15:49,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:49,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-21 11:15:49,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:49,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-21 11:15:49,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:49,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:15:49,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:15:49,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501791520] [2023-12-21 11:15:49,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501791520] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:15:49,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:15:49,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 11:15:49,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478907110] [2023-12-21 11:15:49,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:15:49,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 11:15:49,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:15:49,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 11:15:49,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 11:15:49,110 INFO L87 Difference]: Start difference. First operand 169 states and 263 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 4 states have internal predecessors, (70), 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) [2023-12-21 11:15:49,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:15:49,981 INFO L93 Difference]: Finished difference Result 590 states and 941 transitions. [2023-12-21 11:15:49,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-21 11:15:49,982 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 4 states have internal predecessors, (70), 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 81 [2023-12-21 11:15:49,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:15:49,986 INFO L225 Difference]: With dead ends: 590 [2023-12-21 11:15:49,986 INFO L226 Difference]: Without dead ends: 431 [2023-12-21 11:15:49,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-12-21 11:15:49,989 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 621 mSDsluCounter, 400 mSDsCounter, 0 mSdLazyCounter, 947 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 632 SdHoareTripleChecker+Valid, 540 SdHoareTripleChecker+Invalid, 1031 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 947 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 11:15:49,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [632 Valid, 540 Invalid, 1031 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 947 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 11:15:49,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2023-12-21 11:15:50,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 330. [2023-12-21 11:15:50,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 283 states have (on average 1.5936395759717314) internal successors, (451), 286 states have internal predecessors, (451), 33 states have call successors, (33), 13 states have call predecessors, (33), 13 states have return successors, (34), 31 states have call predecessors, (34), 31 states have call successors, (34) [2023-12-21 11:15:50,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 518 transitions. [2023-12-21 11:15:50,019 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 518 transitions. Word has length 81 [2023-12-21 11:15:50,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:15:50,020 INFO L495 AbstractCegarLoop]: Abstraction has 330 states and 518 transitions. [2023-12-21 11:15:50,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 4 states have internal predecessors, (70), 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) [2023-12-21 11:15:50,020 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 518 transitions. [2023-12-21 11:15:50,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-21 11:15:50,022 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:15:50,022 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] [2023-12-21 11:15:50,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-21 11:15:50,023 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:15:50,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:15:50,023 INFO L85 PathProgramCache]: Analyzing trace with hash 674003233, now seen corresponding path program 1 times [2023-12-21 11:15:50,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:15:50,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730447049] [2023-12-21 11:15:50,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:15:50,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:15:50,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:50,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:15:50,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:50,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-21 11:15:50,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:50,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-21 11:15:50,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:50,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-21 11:15:50,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:50,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-21 11:15:50,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:50,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:15:50,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:15:50,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730447049] [2023-12-21 11:15:50,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730447049] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:15:50,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:15:50,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:15:50,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872323746] [2023-12-21 11:15:50,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:15:50,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:15:50,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:15:50,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:15:50,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:15:50,198 INFO L87 Difference]: Start difference. First operand 330 states and 518 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 5 states have internal predecessors, (70), 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) [2023-12-21 11:15:51,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:15:51,365 INFO L93 Difference]: Finished difference Result 965 states and 1535 transitions. [2023-12-21 11:15:51,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-21 11:15:51,365 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 5 states have internal predecessors, (70), 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 81 [2023-12-21 11:15:51,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:15:51,368 INFO L225 Difference]: With dead ends: 965 [2023-12-21 11:15:51,369 INFO L226 Difference]: Without dead ends: 645 [2023-12-21 11:15:51,369 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-21 11:15:51,370 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 624 mSDsluCounter, 776 mSDsCounter, 0 mSdLazyCounter, 1560 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 635 SdHoareTripleChecker+Valid, 1021 SdHoareTripleChecker+Invalid, 1609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-21 11:15:51,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [635 Valid, 1021 Invalid, 1609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1560 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-21 11:15:51,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2023-12-21 11:15:51,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 480. [2023-12-21 11:15:51,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 480 states, 413 states have (on average 1.585956416464891) internal successors, (655), 417 states have internal predecessors, (655), 46 states have call successors, (46), 19 states have call predecessors, (46), 20 states have return successors, (49), 45 states have call predecessors, (49), 44 states have call successors, (49) [2023-12-21 11:15:51,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 750 transitions. [2023-12-21 11:15:51,399 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 750 transitions. Word has length 81 [2023-12-21 11:15:51,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:15:51,400 INFO L495 AbstractCegarLoop]: Abstraction has 480 states and 750 transitions. [2023-12-21 11:15:51,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 5 states have internal predecessors, (70), 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) [2023-12-21 11:15:51,400 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 750 transitions. [2023-12-21 11:15:51,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-21 11:15:51,401 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:15:51,401 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] [2023-12-21 11:15:51,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-21 11:15:51,402 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:15:51,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:15:51,402 INFO L85 PathProgramCache]: Analyzing trace with hash 1627943391, now seen corresponding path program 1 times [2023-12-21 11:15:51,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:15:51,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098747831] [2023-12-21 11:15:51,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:15:51,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:15:51,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:51,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:15:51,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:51,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-21 11:15:51,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:51,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-21 11:15:51,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:51,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-21 11:15:51,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:51,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-21 11:15:51,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:51,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:15:51,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:15:51,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098747831] [2023-12-21 11:15:51,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098747831] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:15:51,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:15:51,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:15:51,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472045986] [2023-12-21 11:15:51,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:15:51,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:15:51,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:15:51,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:15:51,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:15:51,515 INFO L87 Difference]: Start difference. First operand 480 states and 750 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 5 states have internal predecessors, (70), 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) [2023-12-21 11:15:52,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:15:52,531 INFO L93 Difference]: Finished difference Result 1514 states and 2403 transitions. [2023-12-21 11:15:52,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-21 11:15:52,532 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 5 states have internal predecessors, (70), 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 81 [2023-12-21 11:15:52,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:15:52,535 INFO L225 Difference]: With dead ends: 1514 [2023-12-21 11:15:52,536 INFO L226 Difference]: Without dead ends: 1044 [2023-12-21 11:15:52,537 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-21 11:15:52,537 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 672 mSDsluCounter, 521 mSDsCounter, 0 mSdLazyCounter, 1287 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 683 SdHoareTripleChecker+Valid, 670 SdHoareTripleChecker+Invalid, 1362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-21 11:15:52,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [683 Valid, 670 Invalid, 1362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1287 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-21 11:15:52,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1044 states. [2023-12-21 11:15:52,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1044 to 781. [2023-12-21 11:15:52,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 781 states, 674 states have (on average 1.5786350148367954) internal successors, (1064), 680 states have internal predecessors, (1064), 72 states have call successors, (72), 31 states have call predecessors, (72), 34 states have return successors, (83), 73 states have call predecessors, (83), 70 states have call successors, (83) [2023-12-21 11:15:52,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 781 states to 781 states and 1219 transitions. [2023-12-21 11:15:52,583 INFO L78 Accepts]: Start accepts. Automaton has 781 states and 1219 transitions. Word has length 81 [2023-12-21 11:15:52,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:15:52,584 INFO L495 AbstractCegarLoop]: Abstraction has 781 states and 1219 transitions. [2023-12-21 11:15:52,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 5 states have internal predecessors, (70), 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) [2023-12-21 11:15:52,584 INFO L276 IsEmpty]: Start isEmpty. Operand 781 states and 1219 transitions. [2023-12-21 11:15:52,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-21 11:15:52,585 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:15:52,585 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] [2023-12-21 11:15:52,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-21 11:15:52,585 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:15:52,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:15:52,586 INFO L85 PathProgramCache]: Analyzing trace with hash 411789665, now seen corresponding path program 1 times [2023-12-21 11:15:52,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:15:52,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124544345] [2023-12-21 11:15:52,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:15:52,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:15:52,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:52,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:15:52,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:52,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-21 11:15:52,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:52,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-21 11:15:52,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:52,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-21 11:15:52,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:52,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-21 11:15:52,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:52,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:15:52,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:15:52,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124544345] [2023-12-21 11:15:52,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124544345] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:15:52,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:15:52,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:15:52,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003662281] [2023-12-21 11:15:52,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:15:52,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:15:52,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:15:52,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:15:52,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:15:52,681 INFO L87 Difference]: Start difference. First operand 781 states and 1219 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 5 states have internal predecessors, (70), 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) [2023-12-21 11:15:53,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:15:53,228 INFO L93 Difference]: Finished difference Result 1803 states and 2863 transitions. [2023-12-21 11:15:53,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 11:15:53,228 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 5 states have internal predecessors, (70), 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 81 [2023-12-21 11:15:53,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:15:53,232 INFO L225 Difference]: With dead ends: 1803 [2023-12-21 11:15:53,232 INFO L226 Difference]: Without dead ends: 1032 [2023-12-21 11:15:53,233 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 [2023-12-21 11:15:53,234 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 468 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 781 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 480 SdHoareTripleChecker+Valid, 507 SdHoareTripleChecker+Invalid, 834 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 11:15:53,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [480 Valid, 507 Invalid, 834 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 781 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 11:15:53,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1032 states. [2023-12-21 11:15:53,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1032 to 781. [2023-12-21 11:15:53,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 781 states, 674 states have (on average 1.5712166172106825) internal successors, (1059), 680 states have internal predecessors, (1059), 72 states have call successors, (72), 31 states have call predecessors, (72), 34 states have return successors, (83), 73 states have call predecessors, (83), 70 states have call successors, (83) [2023-12-21 11:15:53,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 781 states to 781 states and 1214 transitions. [2023-12-21 11:15:53,288 INFO L78 Accepts]: Start accepts. Automaton has 781 states and 1214 transitions. Word has length 81 [2023-12-21 11:15:53,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:15:53,289 INFO L495 AbstractCegarLoop]: Abstraction has 781 states and 1214 transitions. [2023-12-21 11:15:53,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 5 states have internal predecessors, (70), 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) [2023-12-21 11:15:53,289 INFO L276 IsEmpty]: Start isEmpty. Operand 781 states and 1214 transitions. [2023-12-21 11:15:53,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-21 11:15:53,290 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:15:53,290 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] [2023-12-21 11:15:53,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-21 11:15:53,290 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:15:53,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:15:53,291 INFO L85 PathProgramCache]: Analyzing trace with hash -320177761, now seen corresponding path program 1 times [2023-12-21 11:15:53,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:15:53,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077873068] [2023-12-21 11:15:53,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:15:53,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:15:53,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:53,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:15:53,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:53,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-21 11:15:53,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:53,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-21 11:15:53,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:53,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-21 11:15:53,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:53,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-21 11:15:53,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:53,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:15:53,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:15:53,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077873068] [2023-12-21 11:15:53,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077873068] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:15:53,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:15:53,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:15:53,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12498458] [2023-12-21 11:15:53,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:15:53,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:15:53,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:15:53,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:15:53,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:15:53,365 INFO L87 Difference]: Start difference. First operand 781 states and 1214 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 5 states have internal predecessors, (70), 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) [2023-12-21 11:15:53,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:15:53,791 INFO L93 Difference]: Finished difference Result 1797 states and 2837 transitions. [2023-12-21 11:15:53,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 11:15:53,791 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 5 states have internal predecessors, (70), 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 81 [2023-12-21 11:15:53,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:15:53,794 INFO L225 Difference]: With dead ends: 1797 [2023-12-21 11:15:53,794 INFO L226 Difference]: Without dead ends: 1026 [2023-12-21 11:15:53,796 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 [2023-12-21 11:15:53,796 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 531 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 685 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 543 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 758 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 11:15:53,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [543 Valid, 423 Invalid, 758 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 685 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 11:15:53,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1026 states. [2023-12-21 11:15:53,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1026 to 781. [2023-12-21 11:15:53,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 781 states, 674 states have (on average 1.5637982195845697) internal successors, (1054), 680 states have internal predecessors, (1054), 72 states have call successors, (72), 31 states have call predecessors, (72), 34 states have return successors, (83), 73 states have call predecessors, (83), 70 states have call successors, (83) [2023-12-21 11:15:53,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 781 states to 781 states and 1209 transitions. [2023-12-21 11:15:53,823 INFO L78 Accepts]: Start accepts. Automaton has 781 states and 1209 transitions. Word has length 81 [2023-12-21 11:15:53,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:15:53,824 INFO L495 AbstractCegarLoop]: Abstraction has 781 states and 1209 transitions. [2023-12-21 11:15:53,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 5 states have internal predecessors, (70), 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) [2023-12-21 11:15:53,824 INFO L276 IsEmpty]: Start isEmpty. Operand 781 states and 1209 transitions. [2023-12-21 11:15:53,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-21 11:15:53,825 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:15:53,825 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] [2023-12-21 11:15:53,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-21 11:15:53,825 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:15:53,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:15:53,825 INFO L85 PathProgramCache]: Analyzing trace with hash -2006357599, now seen corresponding path program 1 times [2023-12-21 11:15:53,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:15:53,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023467352] [2023-12-21 11:15:53,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:15:53,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:15:53,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:53,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:15:53,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:53,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-21 11:15:53,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:53,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-21 11:15:53,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:53,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-21 11:15:53,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:53,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-21 11:15:53,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:53,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:15:53,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:15:53,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023467352] [2023-12-21 11:15:53,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023467352] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:15:53,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:15:53,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:15:53,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683607165] [2023-12-21 11:15:53,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:15:53,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:15:53,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:15:53,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:15:53,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:15:53,906 INFO L87 Difference]: Start difference. First operand 781 states and 1209 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 5 states have internal predecessors, (70), 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) [2023-12-21 11:15:54,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:15:54,919 INFO L93 Difference]: Finished difference Result 2780 states and 4348 transitions. [2023-12-21 11:15:54,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 11:15:54,920 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 5 states have internal predecessors, (70), 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 81 [2023-12-21 11:15:54,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:15:54,926 INFO L225 Difference]: With dead ends: 2780 [2023-12-21 11:15:54,927 INFO L226 Difference]: Without dead ends: 2009 [2023-12-21 11:15:54,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-21 11:15:54,931 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 754 mSDsluCounter, 771 mSDsCounter, 0 mSdLazyCounter, 1496 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 770 SdHoareTripleChecker+Valid, 1012 SdHoareTripleChecker+Invalid, 1550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-21 11:15:54,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [770 Valid, 1012 Invalid, 1550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1496 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-21 11:15:54,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2009 states. [2023-12-21 11:15:55,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2009 to 1384. [2023-12-21 11:15:55,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1384 states, 1201 states have (on average 1.5570358034970857) internal successors, (1870), 1211 states have internal predecessors, (1870), 120 states have call successors, (120), 55 states have call predecessors, (120), 62 states have return successors, (153), 125 states have call predecessors, (153), 118 states have call successors, (153) [2023-12-21 11:15:55,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1384 states to 1384 states and 2143 transitions. [2023-12-21 11:15:55,029 INFO L78 Accepts]: Start accepts. Automaton has 1384 states and 2143 transitions. Word has length 81 [2023-12-21 11:15:55,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:15:55,030 INFO L495 AbstractCegarLoop]: Abstraction has 1384 states and 2143 transitions. [2023-12-21 11:15:55,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 5 states have internal predecessors, (70), 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) [2023-12-21 11:15:55,031 INFO L276 IsEmpty]: Start isEmpty. Operand 1384 states and 2143 transitions. [2023-12-21 11:15:55,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-21 11:15:55,032 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:15:55,032 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] [2023-12-21 11:15:55,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-21 11:15:55,033 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:15:55,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:15:55,033 INFO L85 PathProgramCache]: Analyzing trace with hash -2060750497, now seen corresponding path program 1 times [2023-12-21 11:15:55,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:15:55,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785503733] [2023-12-21 11:15:55,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:15:55,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:15:55,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:55,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:15:55,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:55,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-21 11:15:55,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:55,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-21 11:15:55,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:55,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-21 11:15:55,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:55,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-21 11:15:55,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:55,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:15:55,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:15:55,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785503733] [2023-12-21 11:15:55,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785503733] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:15:55,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:15:55,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:15:55,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35440502] [2023-12-21 11:15:55,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:15:55,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:15:55,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:15:55,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:15:55,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:15:55,153 INFO L87 Difference]: Start difference. First operand 1384 states and 2143 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 5 states have internal predecessors, (70), 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) [2023-12-21 11:15:56,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:15:56,319 INFO L93 Difference]: Finished difference Result 5003 states and 7824 transitions. [2023-12-21 11:15:56,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 11:15:56,320 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 5 states have internal predecessors, (70), 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 81 [2023-12-21 11:15:56,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:15:56,331 INFO L225 Difference]: With dead ends: 5003 [2023-12-21 11:15:56,331 INFO L226 Difference]: Without dead ends: 3629 [2023-12-21 11:15:56,333 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-21 11:15:56,334 INFO L413 NwaCegarLoop]: 240 mSDtfsCounter, 630 mSDsluCounter, 768 mSDsCounter, 0 mSdLazyCounter, 1710 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 640 SdHoareTripleChecker+Valid, 1008 SdHoareTripleChecker+Invalid, 1763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1710 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-21 11:15:56,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [640 Valid, 1008 Invalid, 1763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 1710 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-21 11:15:56,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3629 states. [2023-12-21 11:15:56,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3629 to 2504. [2023-12-21 11:15:56,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2504 states, 2173 states have (on average 1.54348826507133) internal successors, (3354), 2191 states have internal predecessors, (3354), 212 states have call successors, (212), 103 states have call predecessors, (212), 118 states have return successors, (307), 225 states have call predecessors, (307), 210 states have call successors, (307) [2023-12-21 11:15:56,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2504 states to 2504 states and 3873 transitions. [2023-12-21 11:15:56,432 INFO L78 Accepts]: Start accepts. Automaton has 2504 states and 3873 transitions. Word has length 81 [2023-12-21 11:15:56,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:15:56,432 INFO L495 AbstractCegarLoop]: Abstraction has 2504 states and 3873 transitions. [2023-12-21 11:15:56,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 5 states have internal predecessors, (70), 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) [2023-12-21 11:15:56,432 INFO L276 IsEmpty]: Start isEmpty. Operand 2504 states and 3873 transitions. [2023-12-21 11:15:56,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-21 11:15:56,434 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:15:56,434 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] [2023-12-21 11:15:56,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-21 11:15:56,434 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:15:56,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:15:56,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1816820193, now seen corresponding path program 1 times [2023-12-21 11:15:56,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:15:56,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980084097] [2023-12-21 11:15:56,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:15:56,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:15:56,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:56,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:15:56,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:56,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-21 11:15:56,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:56,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-21 11:15:56,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:56,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-21 11:15:56,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:56,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-21 11:15:56,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:56,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:15:56,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:15:56,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980084097] [2023-12-21 11:15:56,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980084097] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:15:56,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:15:56,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:15:56,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196584126] [2023-12-21 11:15:56,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:15:56,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:15:56,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:15:56,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:15:56,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:15:56,517 INFO L87 Difference]: Start difference. First operand 2504 states and 3873 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 5 states have internal predecessors, (70), 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) [2023-12-21 11:15:57,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:15:57,652 INFO L93 Difference]: Finished difference Result 8885 states and 13882 transitions. [2023-12-21 11:15:57,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 11:15:57,653 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 5 states have internal predecessors, (70), 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 81 [2023-12-21 11:15:57,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:15:57,675 INFO L225 Difference]: With dead ends: 8885 [2023-12-21 11:15:57,675 INFO L226 Difference]: Without dead ends: 6391 [2023-12-21 11:15:57,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-21 11:15:57,683 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 647 mSDsluCounter, 771 mSDsCounter, 0 mSdLazyCounter, 1454 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 663 SdHoareTripleChecker+Valid, 1012 SdHoareTripleChecker+Invalid, 1508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-21 11:15:57,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [663 Valid, 1012 Invalid, 1508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1454 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-21 11:15:57,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6391 states. [2023-12-21 11:15:57,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6391 to 4839. [2023-12-21 11:15:57,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4839 states, 4220 states have (on average 1.543127962085308) internal successors, (6512), 4254 states have internal predecessors, (6512), 388 states have call successors, (388), 199 states have call predecessors, (388), 230 states have return successors, (661), 417 states have call predecessors, (661), 386 states have call successors, (661) [2023-12-21 11:15:57,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4839 states to 4839 states and 7561 transitions. [2023-12-21 11:15:57,876 INFO L78 Accepts]: Start accepts. Automaton has 4839 states and 7561 transitions. Word has length 81 [2023-12-21 11:15:57,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:15:57,876 INFO L495 AbstractCegarLoop]: Abstraction has 4839 states and 7561 transitions. [2023-12-21 11:15:57,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 5 states have internal predecessors, (70), 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) [2023-12-21 11:15:57,876 INFO L276 IsEmpty]: Start isEmpty. Operand 4839 states and 7561 transitions. [2023-12-21 11:15:57,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-21 11:15:57,879 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:15:57,879 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] [2023-12-21 11:15:57,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-21 11:15:57,879 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:15:57,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:15:57,880 INFO L85 PathProgramCache]: Analyzing trace with hash -516572445, now seen corresponding path program 1 times [2023-12-21 11:15:57,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:15:57,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751825370] [2023-12-21 11:15:57,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:15:57,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:15:57,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:57,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:15:57,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:57,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-21 11:15:57,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:57,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-21 11:15:57,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:57,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-21 11:15:57,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:57,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-21 11:15:57,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:57,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:15:57,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:15:57,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751825370] [2023-12-21 11:15:57,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751825370] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:15:57,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:15:57,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:15:57,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119173786] [2023-12-21 11:15:57,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:15:57,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:15:57,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:15:57,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:15:57,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:15:57,973 INFO L87 Difference]: Start difference. First operand 4839 states and 7561 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 5 states have internal predecessors, (70), 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) [2023-12-21 11:15:59,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:15:59,282 INFO L93 Difference]: Finished difference Result 16860 states and 26568 transitions. [2023-12-21 11:15:59,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 11:15:59,283 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 5 states have internal predecessors, (70), 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 81 [2023-12-21 11:15:59,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:15:59,321 INFO L225 Difference]: With dead ends: 16860 [2023-12-21 11:15:59,321 INFO L226 Difference]: Without dead ends: 12031 [2023-12-21 11:15:59,331 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-21 11:15:59,332 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 596 mSDsluCounter, 771 mSDsCounter, 0 mSdLazyCounter, 1530 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 606 SdHoareTripleChecker+Valid, 1012 SdHoareTripleChecker+Invalid, 1584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-21 11:15:59,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [606 Valid, 1012 Invalid, 1584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1530 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-21 11:15:59,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12031 states. [2023-12-21 11:15:59,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12031 to 9506. [2023-12-21 11:15:59,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9506 states, 8327 states have (on average 1.5436531764140746) internal successors, (12854), 8393 states have internal predecessors, (12854), 724 states have call successors, (724), 391 states have call predecessors, (724), 454 states have return successors, (1515), 785 states have call predecessors, (1515), 722 states have call successors, (1515) [2023-12-21 11:15:59,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9506 states to 9506 states and 15093 transitions. [2023-12-21 11:15:59,702 INFO L78 Accepts]: Start accepts. Automaton has 9506 states and 15093 transitions. Word has length 81 [2023-12-21 11:15:59,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:15:59,702 INFO L495 AbstractCegarLoop]: Abstraction has 9506 states and 15093 transitions. [2023-12-21 11:15:59,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 5 states have internal predecessors, (70), 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) [2023-12-21 11:15:59,703 INFO L276 IsEmpty]: Start isEmpty. Operand 9506 states and 15093 transitions. [2023-12-21 11:15:59,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-21 11:15:59,710 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:15:59,710 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] [2023-12-21 11:15:59,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-21 11:15:59,710 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:15:59,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:15:59,711 INFO L85 PathProgramCache]: Analyzing trace with hash -314748511, now seen corresponding path program 1 times [2023-12-21 11:15:59,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:15:59,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990423713] [2023-12-21 11:15:59,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:15:59,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:15:59,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:59,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:15:59,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:59,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-21 11:15:59,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:59,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-21 11:15:59,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:59,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-21 11:15:59,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:59,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-21 11:15:59,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:15:59,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:15:59,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:15:59,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990423713] [2023-12-21 11:15:59,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990423713] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:15:59,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:15:59,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 11:15:59,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310859074] [2023-12-21 11:15:59,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:15:59,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 11:15:59,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:15:59,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 11:15:59,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 11:15:59,797 INFO L87 Difference]: Start difference. First operand 9506 states and 15093 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 4 states have internal predecessors, (70), 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) [2023-12-21 11:16:01,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:16:01,062 INFO L93 Difference]: Finished difference Result 26812 states and 42512 transitions. [2023-12-21 11:16:01,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-21 11:16:01,063 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 4 states have internal predecessors, (70), 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 81 [2023-12-21 11:16:01,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:16:01,112 INFO L225 Difference]: With dead ends: 26812 [2023-12-21 11:16:01,112 INFO L226 Difference]: Without dead ends: 17317 [2023-12-21 11:16:01,134 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-12-21 11:16:01,135 INFO L413 NwaCegarLoop]: 267 mSDtfsCounter, 796 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 1247 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 825 SdHoareTripleChecker+Valid, 732 SdHoareTripleChecker+Invalid, 1326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 11:16:01,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [825 Valid, 732 Invalid, 1326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1247 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 11:16:01,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17317 states. [2023-12-21 11:16:01,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17317 to 14161. [2023-12-21 11:16:01,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14161 states, 12370 states have (on average 1.5295068714632174) internal successors, (18920), 12501 states have internal predecessors, (18920), 1106 states have call successors, (1106), 589 states have call predecessors, (1106), 684 states have return successors, (2141), 1134 states have call predecessors, (2141), 1104 states have call successors, (2141) [2023-12-21 11:16:01,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14161 states to 14161 states and 22167 transitions. [2023-12-21 11:16:01,607 INFO L78 Accepts]: Start accepts. Automaton has 14161 states and 22167 transitions. Word has length 81 [2023-12-21 11:16:01,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:16:01,609 INFO L495 AbstractCegarLoop]: Abstraction has 14161 states and 22167 transitions. [2023-12-21 11:16:01,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 4 states have internal predecessors, (70), 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) [2023-12-21 11:16:01,609 INFO L276 IsEmpty]: Start isEmpty. Operand 14161 states and 22167 transitions. [2023-12-21 11:16:01,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-21 11:16:01,633 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:16:01,634 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:16:01,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-21 11:16:01,634 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:16:01,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:16:01,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1718177814, now seen corresponding path program 1 times [2023-12-21 11:16:01,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:16:01,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204848362] [2023-12-21 11:16:01,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:16:01,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:16:01,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:16:01,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:16:01,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:16:01,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-21 11:16:01,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:16:01,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-21 11:16:01,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:16:01,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-21 11:16:01,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:16:01,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-21 11:16:01,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:16:01,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-21 11:16:01,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:16:01,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-21 11:16:01,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:16:01,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-21 11:16:01,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:16:01,859 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-21 11:16:01,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:16:01,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204848362] [2023-12-21 11:16:01,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204848362] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:16:01,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [234437552] [2023-12-21 11:16:01,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:16:01,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:16:01,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:16:01,876 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) [2023-12-21 11:16:01,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-21 11:16:02,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:16:02,055 INFO L262 TraceCheckSpWp]: Trace formula consists of 527 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 11:16:02,061 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:16:02,123 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-21 11:16:02,123 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 11:16:02,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [234437552] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:16:02,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 11:16:02,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-12-21 11:16:02,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659023512] [2023-12-21 11:16:02,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:16:02,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:16:02,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:16:02,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:16:02,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:16:02,124 INFO L87 Difference]: Start difference. First operand 14161 states and 22167 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 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) [2023-12-21 11:16:02,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:16:02,858 INFO L93 Difference]: Finished difference Result 42164 states and 66419 transitions. [2023-12-21 11:16:02,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:16:02,859 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 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 131 [2023-12-21 11:16:02,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:16:02,924 INFO L225 Difference]: With dead ends: 42164 [2023-12-21 11:16:02,924 INFO L226 Difference]: Without dead ends: 28014 [2023-12-21 11:16:02,951 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:16:02,952 INFO L413 NwaCegarLoop]: 238 mSDtfsCounter, 216 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:16:02,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 456 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:16:02,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28014 states. [2023-12-21 11:16:03,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28014 to 27912. [2023-12-21 11:16:03,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27912 states, 24387 states have (on average 1.5249518185918727) internal successors, (37189), 24647 states have internal predecessors, (37189), 2156 states have call successors, (2156), 1177 states have call predecessors, (2156), 1368 states have return successors, (4165), 2151 states have call predecessors, (4165), 2154 states have call successors, (4165) [2023-12-21 11:16:03,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27912 states to 27912 states and 43510 transitions. [2023-12-21 11:16:03,962 INFO L78 Accepts]: Start accepts. Automaton has 27912 states and 43510 transitions. Word has length 131 [2023-12-21 11:16:03,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:16:03,962 INFO L495 AbstractCegarLoop]: Abstraction has 27912 states and 43510 transitions. [2023-12-21 11:16:03,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 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) [2023-12-21 11:16:03,962 INFO L276 IsEmpty]: Start isEmpty. Operand 27912 states and 43510 transitions. [2023-12-21 11:16:04,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-21 11:16:04,005 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:16:04,005 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:16:04,026 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-21 11:16:04,227 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,SelfDestructingSolverStorable11 [2023-12-21 11:16:04,227 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:16:04,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:16:04,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1991092534, now seen corresponding path program 1 times [2023-12-21 11:16:04,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:16:04,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290769710] [2023-12-21 11:16:04,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:16:04,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:16:04,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:16:04,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:16:04,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:16:04,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-21 11:16:04,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:16:04,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-21 11:16:04,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:16:04,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-21 11:16:04,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:16:04,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-21 11:16:04,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:16:04,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-21 11:16:04,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:16:04,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-21 11:16:04,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:16:04,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-21 11:16:04,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:16:04,322 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-21 11:16:04,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:16:04,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290769710] [2023-12-21 11:16:04,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290769710] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:16:04,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1413917868] [2023-12-21 11:16:04,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:16:04,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:16:04,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:16:04,323 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) [2023-12-21 11:16:04,361 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-21 11:16:04,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:16:04,425 INFO L262 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 11:16:04,435 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:16:04,479 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-21 11:16:04,479 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 11:16:04,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1413917868] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:16:04,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 11:16:04,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-12-21 11:16:04,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539235021] [2023-12-21 11:16:04,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:16:04,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:16:04,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:16:04,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:16:04,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:16:04,481 INFO L87 Difference]: Start difference. First operand 27912 states and 43510 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 2 states have internal predecessors, (97), 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) [2023-12-21 11:16:06,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:16:06,084 INFO L93 Difference]: Finished difference Result 83121 states and 130416 transitions. [2023-12-21 11:16:06,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:16:06,085 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 2 states have internal predecessors, (97), 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 131 [2023-12-21 11:16:06,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:16:06,248 INFO L225 Difference]: With dead ends: 83121 [2023-12-21 11:16:06,248 INFO L226 Difference]: Without dead ends: 55220 [2023-12-21 11:16:06,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:16:06,388 INFO L413 NwaCegarLoop]: 238 mSDtfsCounter, 211 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:16:06,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 456 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:16:06,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55220 states. [2023-12-21 11:16:08,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55220 to 55020. [2023-12-21 11:16:08,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55020 states, 48077 states have (on average 1.5202487676019718) internal successors, (73089), 48595 states have internal predecessors, (73089), 4206 states have call successors, (4206), 2353 states have call predecessors, (4206), 2736 states have return successors, (8163), 4135 states have call predecessors, (8163), 4204 states have call successors, (8163) [2023-12-21 11:16:08,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55020 states to 55020 states and 85458 transitions. [2023-12-21 11:16:08,197 INFO L78 Accepts]: Start accepts. Automaton has 55020 states and 85458 transitions. Word has length 131 [2023-12-21 11:16:08,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:16:08,197 INFO L495 AbstractCegarLoop]: Abstraction has 55020 states and 85458 transitions. [2023-12-21 11:16:08,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 2 states have internal predecessors, (97), 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) [2023-12-21 11:16:08,197 INFO L276 IsEmpty]: Start isEmpty. Operand 55020 states and 85458 transitions. [2023-12-21 11:16:08,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-21 11:16:08,282 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:16:08,283 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:16:08,290 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-21 11:16:08,488 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,SelfDestructingSolverStorable12 [2023-12-21 11:16:08,488 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:16:08,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:16:08,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1289872362, now seen corresponding path program 1 times [2023-12-21 11:16:08,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:16:08,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214972248] [2023-12-21 11:16:08,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:16:08,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:16:08,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:16:08,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:16:08,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:16:08,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-21 11:16:08,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:16:08,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-21 11:16:08,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:16:08,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-21 11:16:08,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:16:08,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-21 11:16:08,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:16:08,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-21 11:16:08,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:16:08,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-21 11:16:08,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:16:08,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-21 11:16:08,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:16:08,575 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-21 11:16:08,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:16:08,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214972248] [2023-12-21 11:16:08,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214972248] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:16:08,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2080975070] [2023-12-21 11:16:08,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:16:08,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:16:08,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:16:08,577 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) [2023-12-21 11:16:08,612 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-21 11:16:08,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:16:08,670 INFO L262 TraceCheckSpWp]: Trace formula consists of 515 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 11:16:08,673 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:16:08,691 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-12-21 11:16:08,691 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 11:16:08,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2080975070] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:16:08,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 11:16:08,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-21 11:16:08,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967599283] [2023-12-21 11:16:08,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:16:08,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:16:08,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:16:08,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:16:08,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:16:08,693 INFO L87 Difference]: Start difference. First operand 55020 states and 85458 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-21 11:16:11,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:16:11,797 INFO L93 Difference]: Finished difference Result 162408 states and 254831 transitions. [2023-12-21 11:16:11,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:16:11,797 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 131 [2023-12-21 11:16:11,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:16:12,157 INFO L225 Difference]: With dead ends: 162408 [2023-12-21 11:16:12,158 INFO L226 Difference]: Without dead ends: 107400 [2023-12-21 11:16:12,445 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:16:12,446 INFO L413 NwaCegarLoop]: 448 mSDtfsCounter, 218 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 687 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 [2023-12-21 11:16:12,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 687 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 11:16:12,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107400 states. [2023-12-21 11:16:16,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107400 to 107400. [2023-12-21 11:16:16,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107400 states, 93782 states have (on average 1.511004243884754) internal successors, (141705), 94685 states have internal predecessors, (141705), 8145 states have call successors, (8145), 4705 states have call predecessors, (8145), 5472 states have return successors, (17646), 8137 states have call predecessors, (17646), 8143 states have call successors, (17646) [2023-12-21 11:16:16,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107400 states to 107400 states and 167496 transitions. [2023-12-21 11:16:16,619 INFO L78 Accepts]: Start accepts. Automaton has 107400 states and 167496 transitions. Word has length 131 [2023-12-21 11:16:16,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:16:16,619 INFO L495 AbstractCegarLoop]: Abstraction has 107400 states and 167496 transitions. [2023-12-21 11:16:16,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-21 11:16:16,620 INFO L276 IsEmpty]: Start isEmpty. Operand 107400 states and 167496 transitions. [2023-12-21 11:16:17,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2023-12-21 11:16:17,143 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:16:17,143 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-21 11:16:17,152 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-21 11:16:17,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:16:17,348 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:16:17,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:16:17,349 INFO L85 PathProgramCache]: Analyzing trace with hash -1396618167, now seen corresponding path program 1 times [2023-12-21 11:16:17,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:16:17,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683548902] [2023-12-21 11:16:17,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:16:17,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:16:17,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:16:17,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:16:17,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:16:17,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-21 11:16:17,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:16:17,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-21 11:16:17,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:16:17,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-21 11:16:17,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:16:17,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-21 11:16:17,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:16:17,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-21 11:16:17,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:16:17,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-21 11:16:17,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:16:17,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-12-21 11:16:17,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:16:17,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-21 11:16:17,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:16:17,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2023-12-21 11:16:17,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:16:17,458 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-12-21 11:16:17,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:16:17,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683548902] [2023-12-21 11:16:17,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683548902] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:16:17,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1196277917] [2023-12-21 11:16:17,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:16:17,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:16:17,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:16:17,474 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 11:16:17,496 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-21 11:16:17,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:16:17,579 INFO L262 TraceCheckSpWp]: Trace formula consists of 649 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 11:16:17,584 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:16:17,691 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-12-21 11:16:17,692 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 11:16:17,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1196277917] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:16:17,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 11:16:17,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-12-21 11:16:17,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874467164] [2023-12-21 11:16:17,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:16:17,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:16:17,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:16:17,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:16:17,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:16:17,693 INFO L87 Difference]: Start difference. First operand 107400 states and 167496 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 2 states have internal predecessors, (122), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-21 11:16:24,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:16:24,196 INFO L93 Difference]: Finished difference Result 319794 states and 502963 transitions. [2023-12-21 11:16:24,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:16:24,196 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 2 states have internal predecessors, (122), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 169 [2023-12-21 11:16:24,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:16:25,126 INFO L225 Difference]: With dead ends: 319794 [2023-12-21 11:16:25,126 INFO L226 Difference]: Without dead ends: 212412 [2023-12-21 11:16:25,302 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:16:25,308 INFO L413 NwaCegarLoop]: 238 mSDtfsCounter, 160 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:16:25,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 456 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:16:25,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212412 states. [2023-12-21 11:16:32,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212412 to 211624. [2023-12-21 11:16:32,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211624 states, 184798 states have (on average 1.5058875096050823) internal successors, (278285), 186601 states have internal predecessors, (278285), 15881 states have call successors, (15881), 9409 states have call predecessors, (15881), 10944 states have return successors, (34558), 15741 states have call predecessors, (34558), 15879 states have call successors, (34558) [2023-12-21 11:16:33,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211624 states to 211624 states and 328724 transitions. [2023-12-21 11:16:33,259 INFO L78 Accepts]: Start accepts. Automaton has 211624 states and 328724 transitions. Word has length 169 [2023-12-21 11:16:33,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:16:33,260 INFO L495 AbstractCegarLoop]: Abstraction has 211624 states and 328724 transitions. [2023-12-21 11:16:33,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 2 states have internal predecessors, (122), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-21 11:16:33,260 INFO L276 IsEmpty]: Start isEmpty. Operand 211624 states and 328724 transitions. [2023-12-21 11:16:33,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2023-12-21 11:16:33,842 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:16:33,843 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-21 11:16:33,862 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-21 11:16:34,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-21 11:16:34,048 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:16:34,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:16:34,048 INFO L85 PathProgramCache]: Analyzing trace with hash 103661993, now seen corresponding path program 1 times [2023-12-21 11:16:34,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:16:34,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41312256] [2023-12-21 11:16:34,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:16:34,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:16:34,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:16:34,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 11:16:34,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:16:34,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-21 11:16:34,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:16:34,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-21 11:16:34,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:16:34,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-21 11:16:34,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:16:34,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-21 11:16:34,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:16:34,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-21 11:16:34,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:16:34,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-21 11:16:34,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:16:34,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 11:16:34,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:16:34,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-21 11:16:34,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:16:34,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2023-12-21 11:16:34,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:16:34,159 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-12-21 11:16:34,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:16:34,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41312256] [2023-12-21 11:16:34,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41312256] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:16:34,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1451286458] [2023-12-21 11:16:34,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:16:34,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:16:34,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:16:34,161 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 11:16:34,196 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-21 11:16:34,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:16:34,272 INFO L262 TraceCheckSpWp]: Trace formula consists of 649 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 11:16:34,274 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:16:34,375 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-12-21 11:16:34,375 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 11:16:34,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1451286458] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:16:34,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 11:16:34,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-12-21 11:16:34,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343575424] [2023-12-21 11:16:34,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:16:34,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:16:34,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:16:34,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:16:34,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:16:34,377 INFO L87 Difference]: Start difference. First operand 211624 states and 328724 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 2 states have internal predecessors, (122), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10)