/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/systemc/token_ring.04.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 00:40:54,159 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 00:40:54,251 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 00:40:54,257 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 00:40:54,257 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 00:40:54,284 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 00:40:54,285 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 00:40:54,285 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 00:40:54,286 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 00:40:54,289 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 00:40:54,289 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 00:40:54,290 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 00:40:54,290 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 00:40:54,291 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 00:40:54,292 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 00:40:54,292 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 00:40:54,292 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 00:40:54,292 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 00:40:54,292 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 00:40:54,293 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 00:40:54,294 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 00:40:54,294 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 00:40:54,294 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 00:40:54,294 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 00:40:54,295 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 00:40:54,295 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 00:40:54,295 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 00:40:54,295 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 00:40:54,296 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 00:40:54,296 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 00:40:54,297 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 00:40:54,297 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 00:40:54,297 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 00:40:54,297 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 00:40:54,297 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 00:40:54,297 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 00:40:54,298 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 00:40:54,298 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 00:40:54,298 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 00:40:54,298 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 00:40:54,298 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 00:40:54,298 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 00:40:54,298 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 00:40:54,299 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-20 00:40:54,503 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 00:40:54,522 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 00:40:54,524 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 00:40:54,525 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 00:40:54,527 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 00:40:54,528 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/token_ring.04.cil-1.c [2023-12-20 00:40:55,671 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 00:40:55,858 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 00:40:55,859 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/systemc/token_ring.04.cil-1.c [2023-12-20 00:40:55,868 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eebe33899/cebd44f28dcd4cd9a0113eccc08d6da5/FLAGaa046be29 [2023-12-20 00:40:55,879 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eebe33899/cebd44f28dcd4cd9a0113eccc08d6da5 [2023-12-20 00:40:55,881 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 00:40:55,882 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 00:40:55,883 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 00:40:55,883 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 00:40:55,888 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 00:40:55,888 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 12:40:55" (1/1) ... [2023-12-20 00:40:55,889 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1422fb8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:40:55, skipping insertion in model container [2023-12-20 00:40:55,889 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 12:40:55" (1/1) ... [2023-12-20 00:40:55,922 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 00:40:56,036 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-1.c[671,684] [2023-12-20 00:40:56,092 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 00:40:56,105 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 00:40:56,119 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-1.c[671,684] [2023-12-20 00:40:56,155 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 00:40:56,173 INFO L206 MainTranslator]: Completed translation [2023-12-20 00:40:56,173 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:40:56 WrapperNode [2023-12-20 00:40:56,174 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 00:40:56,174 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 00:40:56,175 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 00:40:56,175 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 00:40:56,180 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:40:56" (1/1) ... [2023-12-20 00:40:56,187 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:40:56" (1/1) ... [2023-12-20 00:40:56,215 INFO L138 Inliner]: procedures = 36, calls = 43, calls flagged for inlining = 20, calls inlined = 20, statements flattened = 399 [2023-12-20 00:40:56,215 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 00:40:56,216 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 00:40:56,216 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 00:40:56,216 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 00:40:56,226 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:40:56" (1/1) ... [2023-12-20 00:40:56,227 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:40:56" (1/1) ... [2023-12-20 00:40:56,231 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:40:56" (1/1) ... [2023-12-20 00:40:56,243 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-20 00:40:56,243 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:40:56" (1/1) ... [2023-12-20 00:40:56,243 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:40:56" (1/1) ... [2023-12-20 00:40:56,249 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:40:56" (1/1) ... [2023-12-20 00:40:56,256 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:40:56" (1/1) ... [2023-12-20 00:40:56,257 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:40:56" (1/1) ... [2023-12-20 00:40:56,259 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:40:56" (1/1) ... [2023-12-20 00:40:56,261 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 00:40:56,272 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 00:40:56,272 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 00:40:56,273 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 00:40:56,273 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:40:56" (1/1) ... [2023-12-20 00:40:56,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 00:40:56,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 00:40:56,316 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-20 00:40:56,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-20 00:40:56,352 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 00:40:56,352 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-12-20 00:40:56,353 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-12-20 00:40:56,353 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-12-20 00:40:56,353 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-12-20 00:40:56,353 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-20 00:40:56,355 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-20 00:40:56,355 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-12-20 00:40:56,355 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-12-20 00:40:56,356 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-12-20 00:40:56,356 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-12-20 00:40:56,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 00:40:56,356 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-12-20 00:40:56,356 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-12-20 00:40:56,356 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 00:40:56,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 00:40:56,461 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 00:40:56,463 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 00:40:56,879 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 00:40:56,922 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 00:40:56,923 INFO L309 CfgBuilder]: Removed 7 assume(true) statements. [2023-12-20 00:40:56,923 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 12:40:56 BoogieIcfgContainer [2023-12-20 00:40:56,923 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 00:40:56,925 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 00:40:56,925 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 00:40:56,927 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 00:40:56,927 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 12:40:55" (1/3) ... [2023-12-20 00:40:56,928 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@95987f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 12:40:56, skipping insertion in model container [2023-12-20 00:40:56,928 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:40:56" (2/3) ... [2023-12-20 00:40:56,928 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@95987f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 12:40:56, skipping insertion in model container [2023-12-20 00:40:56,928 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 12:40:56" (3/3) ... [2023-12-20 00:40:56,929 INFO L112 eAbstractionObserver]: Analyzing ICFG token_ring.04.cil-1.c [2023-12-20 00:40:56,941 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 00:40:56,941 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-20 00:40:56,990 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 00:40:56,994 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;@f298f63, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 00:40:56,995 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-20 00:40:56,998 INFO L276 IsEmpty]: Start isEmpty. Operand has 164 states, 138 states have (on average 1.6884057971014492) internal successors, (233), 140 states have internal predecessors, (233), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-20 00:40:57,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-20 00:40:57,008 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:40:57,008 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] [2023-12-20 00:40:57,008 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:40:57,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:40:57,013 INFO L85 PathProgramCache]: Analyzing trace with hash -350002983, now seen corresponding path program 1 times [2023-12-20 00:40:57,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:40:57,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434357953] [2023-12-20 00:40:57,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:40:57,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:40:57,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:40:57,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:40:57,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:40:57,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-20 00:40:57,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:40:57,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-20 00:40:57,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:40:57,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-20 00:40:57,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:40:57,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-20 00:40:57,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:40:57,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 00:40:57,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:40:57,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434357953] [2023-12-20 00:40:57,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434357953] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:40:57,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:40:57,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 00:40:57,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156065461] [2023-12-20 00:40:57,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:40:57,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 00:40:57,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:40:57,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 00:40:57,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 00:40:57,434 INFO L87 Difference]: Start difference. First operand has 164 states, 138 states have (on average 1.6884057971014492) internal successors, (233), 140 states have internal predecessors, (233), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) 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, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 00:40:58,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:40:58,181 INFO L93 Difference]: Finished difference Result 370 states and 613 transitions. [2023-12-20 00:40:58,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 00:40:58,184 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, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 80 [2023-12-20 00:40:58,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:40:58,215 INFO L225 Difference]: With dead ends: 370 [2023-12-20 00:40:58,215 INFO L226 Difference]: Without dead ends: 212 [2023-12-20 00:40:58,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-20 00:40:58,228 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 407 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 435 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 423 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-20 00:40:58,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [423 Valid, 297 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 435 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-20 00:40:58,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2023-12-20 00:40:58,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 162. [2023-12-20 00:40:58,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 137 states have (on average 1.5693430656934306) internal successors, (215), 138 states have internal predecessors, (215), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-20 00:40:58,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 251 transitions. [2023-12-20 00:40:58,291 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 251 transitions. Word has length 80 [2023-12-20 00:40:58,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:40:58,291 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 251 transitions. [2023-12-20 00:40:58,291 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, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 00:40:58,292 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 251 transitions. [2023-12-20 00:40:58,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-20 00:40:58,294 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:40:58,294 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] [2023-12-20 00:40:58,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 00:40:58,295 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:40:58,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:40:58,296 INFO L85 PathProgramCache]: Analyzing trace with hash 617347671, now seen corresponding path program 1 times [2023-12-20 00:40:58,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:40:58,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59451332] [2023-12-20 00:40:58,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:40:58,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:40:58,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:40:58,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:40:58,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:40:58,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-20 00:40:58,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:40:58,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-20 00:40:58,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:40:58,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-20 00:40:58,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:40:58,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-20 00:40:58,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:40:58,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 00:40:58,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:40:58,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59451332] [2023-12-20 00:40:58,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59451332] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:40:58,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:40:58,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 00:40:58,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397586517] [2023-12-20 00:40:58,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:40:58,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 00:40:58,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:40:58,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 00:40:58,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-20 00:40:58,478 INFO L87 Difference]: Start difference. First operand 162 states and 251 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 00:40:59,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:40:59,455 INFO L93 Difference]: Finished difference Result 569 states and 905 transitions. [2023-12-20 00:40:59,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-20 00:40:59,456 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 80 [2023-12-20 00:40:59,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:40:59,459 INFO L225 Difference]: With dead ends: 569 [2023-12-20 00:40:59,459 INFO L226 Difference]: Without dead ends: 417 [2023-12-20 00:40:59,460 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-12-20 00:40:59,461 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 605 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 942 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 616 SdHoareTripleChecker+Valid, 491 SdHoareTripleChecker+Invalid, 1018 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 942 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-20 00:40:59,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [616 Valid, 491 Invalid, 1018 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 942 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-20 00:40:59,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2023-12-20 00:40:59,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 318. [2023-12-20 00:40:59,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 273 states have (on average 1.5787545787545787) internal successors, (431), 275 states have internal predecessors, (431), 31 states have call successors, (31), 12 states have call predecessors, (31), 13 states have return successors, (34), 31 states have call predecessors, (34), 31 states have call successors, (34) [2023-12-20 00:40:59,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 496 transitions. [2023-12-20 00:40:59,491 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 496 transitions. Word has length 80 [2023-12-20 00:40:59,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:40:59,491 INFO L495 AbstractCegarLoop]: Abstraction has 318 states and 496 transitions. [2023-12-20 00:40:59,492 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 00:40:59,492 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 496 transitions. [2023-12-20 00:40:59,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-20 00:40:59,493 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:40:59,493 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] [2023-12-20 00:40:59,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 00:40:59,494 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:40:59,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:40:59,494 INFO L85 PathProgramCache]: Analyzing trace with hash -800451433, now seen corresponding path program 1 times [2023-12-20 00:40:59,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:40:59,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413386747] [2023-12-20 00:40:59,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:40:59,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:40:59,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:40:59,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:40:59,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:40:59,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-20 00:40:59,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:40:59,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-20 00:40:59,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:40:59,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-20 00:40:59,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:40:59,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-20 00:40:59,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:40:59,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 00:40:59,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:40:59,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413386747] [2023-12-20 00:40:59,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413386747] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:40:59,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:40:59,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 00:40:59,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728992111] [2023-12-20 00:40:59,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:40:59,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 00:40:59,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:40:59,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 00:40:59,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:40:59,688 INFO L87 Difference]: Start difference. First operand 318 states and 496 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 00:41:00,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:41:00,969 INFO L93 Difference]: Finished difference Result 934 states and 1479 transitions. [2023-12-20 00:41:00,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 00:41:00,969 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 80 [2023-12-20 00:41:00,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:41:00,973 INFO L225 Difference]: With dead ends: 934 [2023-12-20 00:41:00,973 INFO L226 Difference]: Without dead ends: 626 [2023-12-20 00:41:00,974 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-20 00:41:00,975 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 610 mSDsluCounter, 693 mSDsCounter, 0 mSdLazyCounter, 1545 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 621 SdHoareTripleChecker+Valid, 916 SdHoareTripleChecker+Invalid, 1590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-20 00:41:00,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [621 Valid, 916 Invalid, 1590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1545 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-20 00:41:00,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2023-12-20 00:41:01,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 463. [2023-12-20 00:41:01,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 463 states, 398 states have (on average 1.57035175879397) internal successors, (625), 401 states have internal predecessors, (625), 44 states have call successors, (44), 18 states have call predecessors, (44), 20 states have return successors, (49), 45 states have call predecessors, (49), 44 states have call successors, (49) [2023-12-20 00:41:01,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 718 transitions. [2023-12-20 00:41:01,020 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 718 transitions. Word has length 80 [2023-12-20 00:41:01,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:41:01,020 INFO L495 AbstractCegarLoop]: Abstraction has 463 states and 718 transitions. [2023-12-20 00:41:01,020 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 00:41:01,021 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 718 transitions. [2023-12-20 00:41:01,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-20 00:41:01,022 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:41:01,022 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] [2023-12-20 00:41:01,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 00:41:01,022 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:41:01,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:41:01,023 INFO L85 PathProgramCache]: Analyzing trace with hash -2016605159, now seen corresponding path program 1 times [2023-12-20 00:41:01,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:41:01,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126346200] [2023-12-20 00:41:01,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:41:01,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:41:01,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:41:01,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:41:01,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:41:01,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-20 00:41:01,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:41:01,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-20 00:41:01,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:41:01,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-20 00:41:01,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:41:01,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-20 00:41:01,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:41:01,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 00:41:01,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:41:01,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126346200] [2023-12-20 00:41:01,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126346200] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:41:01,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:41:01,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 00:41:01,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378744813] [2023-12-20 00:41:01,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:41:01,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 00:41:01,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:41:01,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 00:41:01,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:41:01,200 INFO L87 Difference]: Start difference. First operand 463 states and 718 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 00:41:02,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:41:02,421 INFO L93 Difference]: Finished difference Result 1468 states and 2317 transitions. [2023-12-20 00:41:02,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 00:41:02,421 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 80 [2023-12-20 00:41:02,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:41:02,427 INFO L225 Difference]: With dead ends: 1468 [2023-12-20 00:41:02,427 INFO L226 Difference]: Without dead ends: 1015 [2023-12-20 00:41:02,428 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 [2023-12-20 00:41:02,429 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 656 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 1279 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 667 SdHoareTripleChecker+Valid, 612 SdHoareTripleChecker+Invalid, 1346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-20 00:41:02,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [667 Valid, 612 Invalid, 1346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1279 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-20 00:41:02,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1015 states. [2023-12-20 00:41:02,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1015 to 754. [2023-12-20 00:41:02,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 754 states, 649 states have (on average 1.5624036979969183) internal successors, (1014), 654 states have internal predecessors, (1014), 70 states have call successors, (70), 30 states have call predecessors, (70), 34 states have return successors, (83), 73 states have call predecessors, (83), 70 states have call successors, (83) [2023-12-20 00:41:02,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 1167 transitions. [2023-12-20 00:41:02,472 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 1167 transitions. Word has length 80 [2023-12-20 00:41:02,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:41:02,473 INFO L495 AbstractCegarLoop]: Abstraction has 754 states and 1167 transitions. [2023-12-20 00:41:02,473 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 00:41:02,473 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 1167 transitions. [2023-12-20 00:41:02,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-20 00:41:02,474 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:41:02,475 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] [2023-12-20 00:41:02,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 00:41:02,475 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:41:02,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:41:02,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1546394711, now seen corresponding path program 1 times [2023-12-20 00:41:02,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:41:02,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385830468] [2023-12-20 00:41:02,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:41:02,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:41:02,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:41:02,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:41:02,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:41:02,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-20 00:41:02,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:41:02,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-20 00:41:02,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:41:02,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-20 00:41:02,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:41:02,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-20 00:41:02,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:41:02,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 00:41:02,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:41:02,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385830468] [2023-12-20 00:41:02,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385830468] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:41:02,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:41:02,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 00:41:02,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600036662] [2023-12-20 00:41:02,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:41:02,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 00:41:02,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:41:02,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 00:41:02,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:41:02,583 INFO L87 Difference]: Start difference. First operand 754 states and 1167 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 00:41:03,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:41:03,217 INFO L93 Difference]: Finished difference Result 1749 states and 2759 transitions. [2023-12-20 00:41:03,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 00:41:03,218 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 80 [2023-12-20 00:41:03,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:41:03,224 INFO L225 Difference]: With dead ends: 1749 [2023-12-20 00:41:03,224 INFO L226 Difference]: Without dead ends: 1005 [2023-12-20 00:41:03,226 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-20 00:41:03,227 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 454 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 777 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 466 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 777 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-20 00:41:03,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [466 Valid, 460 Invalid, 826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 777 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-20 00:41:03,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1005 states. [2023-12-20 00:41:03,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1005 to 754. [2023-12-20 00:41:03,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 754 states, 649 states have (on average 1.5546995377503852) internal successors, (1009), 654 states have internal predecessors, (1009), 70 states have call successors, (70), 30 states have call predecessors, (70), 34 states have return successors, (83), 73 states have call predecessors, (83), 70 states have call successors, (83) [2023-12-20 00:41:03,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 1162 transitions. [2023-12-20 00:41:03,301 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 1162 transitions. Word has length 80 [2023-12-20 00:41:03,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:41:03,301 INFO L495 AbstractCegarLoop]: Abstraction has 754 states and 1162 transitions. [2023-12-20 00:41:03,301 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 00:41:03,301 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 1162 transitions. [2023-12-20 00:41:03,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-20 00:41:03,302 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:41:03,303 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] [2023-12-20 00:41:03,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 00:41:03,303 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:41:03,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:41:03,303 INFO L85 PathProgramCache]: Analyzing trace with hash -139785127, now seen corresponding path program 1 times [2023-12-20 00:41:03,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:41:03,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896754699] [2023-12-20 00:41:03,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:41:03,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:41:03,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:41:03,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:41:03,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:41:03,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-20 00:41:03,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:41:03,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-20 00:41:03,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:41:03,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-20 00:41:03,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:41:03,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-20 00:41:03,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:41:03,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 00:41:03,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:41:03,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896754699] [2023-12-20 00:41:03,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896754699] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:41:03,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:41:03,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 00:41:03,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472296931] [2023-12-20 00:41:03,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:41:03,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 00:41:03,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:41:03,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 00:41:03,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:41:03,428 INFO L87 Difference]: Start difference. First operand 754 states and 1162 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 00:41:04,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:41:04,013 INFO L93 Difference]: Finished difference Result 1743 states and 2733 transitions. [2023-12-20 00:41:04,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 00:41:04,014 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 80 [2023-12-20 00:41:04,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:41:04,018 INFO L225 Difference]: With dead ends: 1743 [2023-12-20 00:41:04,019 INFO L226 Difference]: Without dead ends: 999 [2023-12-20 00:41:04,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-20 00:41:04,021 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 516 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 681 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 528 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 681 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-20 00:41:04,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [528 Valid, 385 Invalid, 748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 681 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-20 00:41:04,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 999 states. [2023-12-20 00:41:04,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 999 to 754. [2023-12-20 00:41:04,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 754 states, 649 states have (on average 1.546995377503852) internal successors, (1004), 654 states have internal predecessors, (1004), 70 states have call successors, (70), 30 states have call predecessors, (70), 34 states have return successors, (83), 73 states have call predecessors, (83), 70 states have call successors, (83) [2023-12-20 00:41:04,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 1157 transitions. [2023-12-20 00:41:04,059 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 1157 transitions. Word has length 80 [2023-12-20 00:41:04,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:41:04,059 INFO L495 AbstractCegarLoop]: Abstraction has 754 states and 1157 transitions. [2023-12-20 00:41:04,059 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 00:41:04,059 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 1157 transitions. [2023-12-20 00:41:04,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-20 00:41:04,061 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:41:04,061 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:41:04,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 00:41:04,061 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:41:04,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:41:04,061 INFO L85 PathProgramCache]: Analyzing trace with hash -194178025, now seen corresponding path program 1 times [2023-12-20 00:41:04,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:41:04,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363057362] [2023-12-20 00:41:04,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:41:04,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:41:04,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:41:04,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:41:04,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:41:04,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-20 00:41:04,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:41:04,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-20 00:41:04,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:41:04,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-20 00:41:04,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:41:04,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-20 00:41:04,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:41:04,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 00:41:04,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:41:04,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363057362] [2023-12-20 00:41:04,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363057362] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:41:04,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:41:04,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 00:41:04,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398496124] [2023-12-20 00:41:04,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:41:04,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 00:41:04,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:41:04,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 00:41:04,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:41:04,177 INFO L87 Difference]: Start difference. First operand 754 states and 1157 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 00:41:05,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:41:05,539 INFO L93 Difference]: Finished difference Result 2704 states and 4202 transitions. [2023-12-20 00:41:05,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 00:41:05,539 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 80 [2023-12-20 00:41:05,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:41:05,548 INFO L225 Difference]: With dead ends: 2704 [2023-12-20 00:41:05,548 INFO L226 Difference]: Without dead ends: 1960 [2023-12-20 00:41:05,551 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-20 00:41:05,551 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 740 mSDsluCounter, 688 mSDsCounter, 0 mSdLazyCounter, 1481 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 756 SdHoareTripleChecker+Valid, 907 SdHoareTripleChecker+Invalid, 1531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-20 00:41:05,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [756 Valid, 907 Invalid, 1531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1481 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-20 00:41:05,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1960 states. [2023-12-20 00:41:05,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1960 to 1337. [2023-12-20 00:41:05,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1337 states, 1156 states have (on average 1.5397923875432526) internal successors, (1780), 1165 states have internal predecessors, (1780), 118 states have call successors, (118), 54 states have call predecessors, (118), 62 states have return successors, (153), 125 states have call predecessors, (153), 118 states have call successors, (153) [2023-12-20 00:41:05,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1337 states to 1337 states and 2051 transitions. [2023-12-20 00:41:05,644 INFO L78 Accepts]: Start accepts. Automaton has 1337 states and 2051 transitions. Word has length 80 [2023-12-20 00:41:05,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:41:05,645 INFO L495 AbstractCegarLoop]: Abstraction has 1337 states and 2051 transitions. [2023-12-20 00:41:05,645 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 00:41:05,645 INFO L276 IsEmpty]: Start isEmpty. Operand 1337 states and 2051 transitions. [2023-12-20 00:41:05,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-20 00:41:05,647 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:41:05,647 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] [2023-12-20 00:41:05,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-20 00:41:05,647 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:41:05,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:41:05,648 INFO L85 PathProgramCache]: Analyzing trace with hash -611574631, now seen corresponding path program 1 times [2023-12-20 00:41:05,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:41:05,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537518274] [2023-12-20 00:41:05,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:41:05,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:41:05,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:41:05,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:41:05,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:41:05,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-20 00:41:05,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:41:05,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-20 00:41:05,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:41:05,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-20 00:41:05,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:41:05,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-20 00:41:05,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:41:05,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 00:41:05,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:41:05,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537518274] [2023-12-20 00:41:05,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537518274] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:41:05,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:41:05,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 00:41:05,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917868061] [2023-12-20 00:41:05,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:41:05,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 00:41:05,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:41:05,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 00:41:05,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:41:05,760 INFO L87 Difference]: Start difference. First operand 1337 states and 2051 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 00:41:07,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:41:07,223 INFO L93 Difference]: Finished difference Result 4867 states and 7558 transitions. [2023-12-20 00:41:07,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 00:41:07,224 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 80 [2023-12-20 00:41:07,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:41:07,237 INFO L225 Difference]: With dead ends: 4867 [2023-12-20 00:41:07,238 INFO L226 Difference]: Without dead ends: 3540 [2023-12-20 00:41:07,241 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-20 00:41:07,242 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 616 mSDsluCounter, 685 mSDsCounter, 0 mSdLazyCounter, 1695 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 626 SdHoareTripleChecker+Valid, 903 SdHoareTripleChecker+Invalid, 1744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1695 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-20 00:41:07,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [626 Valid, 903 Invalid, 1744 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1695 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-20 00:41:07,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3540 states. [2023-12-20 00:41:07,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3540 to 2457. [2023-12-20 00:41:07,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2457 states, 2128 states have (on average 1.5338345864661653) internal successors, (3264), 2145 states have internal predecessors, (3264), 210 states have call successors, (210), 102 states have call predecessors, (210), 118 states have return successors, (307), 225 states have call predecessors, (307), 210 states have call successors, (307) [2023-12-20 00:41:07,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2457 states to 2457 states and 3781 transitions. [2023-12-20 00:41:07,359 INFO L78 Accepts]: Start accepts. Automaton has 2457 states and 3781 transitions. Word has length 80 [2023-12-20 00:41:07,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:41:07,359 INFO L495 AbstractCegarLoop]: Abstraction has 2457 states and 3781 transitions. [2023-12-20 00:41:07,359 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 00:41:07,359 INFO L276 IsEmpty]: Start isEmpty. Operand 2457 states and 3781 transitions. [2023-12-20 00:41:07,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-20 00:41:07,361 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:41:07,362 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] [2023-12-20 00:41:07,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-20 00:41:07,362 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:41:07,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:41:07,362 INFO L85 PathProgramCache]: Analyzing trace with hash 67697623, now seen corresponding path program 1 times [2023-12-20 00:41:07,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:41:07,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814279809] [2023-12-20 00:41:07,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:41:07,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:41:07,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:41:07,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:41:07,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:41:07,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-20 00:41:07,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:41:07,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-20 00:41:07,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:41:07,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-20 00:41:07,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:41:07,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-20 00:41:07,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:41:07,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 00:41:07,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:41:07,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814279809] [2023-12-20 00:41:07,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814279809] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:41:07,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:41:07,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 00:41:07,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605794709] [2023-12-20 00:41:07,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:41:07,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 00:41:07,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:41:07,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 00:41:07,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:41:07,488 INFO L87 Difference]: Start difference. First operand 2457 states and 3781 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 00:41:08,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:41:08,834 INFO L93 Difference]: Finished difference Result 8749 states and 13616 transitions. [2023-12-20 00:41:08,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 00:41:08,835 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 80 [2023-12-20 00:41:08,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:41:08,865 INFO L225 Difference]: With dead ends: 8749 [2023-12-20 00:41:08,865 INFO L226 Difference]: Without dead ends: 6302 [2023-12-20 00:41:08,874 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-20 00:41:08,875 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 633 mSDsluCounter, 688 mSDsCounter, 0 mSdLazyCounter, 1439 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 649 SdHoareTripleChecker+Valid, 907 SdHoareTripleChecker+Invalid, 1489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-20 00:41:08,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [649 Valid, 907 Invalid, 1489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1439 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-20 00:41:08,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6302 states. [2023-12-20 00:41:09,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6302 to 4752. [2023-12-20 00:41:09,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4752 states, 4135 states have (on average 1.5337363966142685) internal successors, (6342), 4168 states have internal predecessors, (6342), 386 states have call successors, (386), 198 states have call predecessors, (386), 230 states have return successors, (661), 417 states have call predecessors, (661), 386 states have call successors, (661) [2023-12-20 00:41:09,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4752 states to 4752 states and 7389 transitions. [2023-12-20 00:41:09,151 INFO L78 Accepts]: Start accepts. Automaton has 4752 states and 7389 transitions. Word has length 80 [2023-12-20 00:41:09,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:41:09,152 INFO L495 AbstractCegarLoop]: Abstraction has 4752 states and 7389 transitions. [2023-12-20 00:41:09,152 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 00:41:09,152 INFO L276 IsEmpty]: Start isEmpty. Operand 4752 states and 7389 transitions. [2023-12-20 00:41:09,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-20 00:41:09,156 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:41:09,156 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] [2023-12-20 00:41:09,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-20 00:41:09,156 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:41:09,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:41:09,157 INFO L85 PathProgramCache]: Analyzing trace with hash 269521557, now seen corresponding path program 1 times [2023-12-20 00:41:09,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:41:09,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425044914] [2023-12-20 00:41:09,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:41:09,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:41:09,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:41:09,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:41:09,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:41:09,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-20 00:41:09,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:41:09,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-20 00:41:09,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:41:09,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-20 00:41:09,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:41:09,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-20 00:41:09,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:41:09,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 00:41:09,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:41:09,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425044914] [2023-12-20 00:41:09,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425044914] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:41:09,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:41:09,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 00:41:09,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134104899] [2023-12-20 00:41:09,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:41:09,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 00:41:09,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:41:09,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 00:41:09,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:41:09,275 INFO L87 Difference]: Start difference. First operand 4752 states and 7389 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 00:41:10,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:41:10,842 INFO L93 Difference]: Finished difference Result 16604 states and 26062 transitions. [2023-12-20 00:41:10,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 00:41:10,844 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 80 [2023-12-20 00:41:10,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:41:10,894 INFO L225 Difference]: With dead ends: 16604 [2023-12-20 00:41:10,894 INFO L226 Difference]: Without dead ends: 11862 [2023-12-20 00:41:10,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-20 00:41:10,911 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 582 mSDsluCounter, 688 mSDsCounter, 0 mSdLazyCounter, 1515 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 592 SdHoareTripleChecker+Valid, 907 SdHoareTripleChecker+Invalid, 1565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-20 00:41:10,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [592 Valid, 907 Invalid, 1565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1515 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-20 00:41:10,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11862 states. [2023-12-20 00:41:11,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11862 to 9339. [2023-12-20 00:41:11,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9339 states, 8162 states have (on average 1.5344278363146289) internal successors, (12524), 8227 states have internal predecessors, (12524), 722 states have call successors, (722), 390 states have call predecessors, (722), 454 states have return successors, (1515), 785 states have call predecessors, (1515), 722 states have call successors, (1515) [2023-12-20 00:41:11,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9339 states to 9339 states and 14761 transitions. [2023-12-20 00:41:11,449 INFO L78 Accepts]: Start accepts. Automaton has 9339 states and 14761 transitions. Word has length 80 [2023-12-20 00:41:11,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:41:11,450 INFO L495 AbstractCegarLoop]: Abstraction has 9339 states and 14761 transitions. [2023-12-20 00:41:11,450 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 00:41:11,451 INFO L276 IsEmpty]: Start isEmpty. Operand 9339 states and 14761 transitions. [2023-12-20 00:41:11,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-20 00:41:11,459 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:41:11,459 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] [2023-12-20 00:41:11,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-20 00:41:11,459 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:41:11,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:41:11,460 INFO L85 PathProgramCache]: Analyzing trace with hash 830221335, now seen corresponding path program 1 times [2023-12-20 00:41:11,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:41:11,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186842779] [2023-12-20 00:41:11,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:41:11,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:41:11,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:41:11,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:41:11,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:41:11,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-20 00:41:11,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:41:11,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-20 00:41:11,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:41:11,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-20 00:41:11,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:41:11,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-20 00:41:11,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:41:11,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 00:41:11,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:41:11,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186842779] [2023-12-20 00:41:11,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186842779] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:41:11,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:41:11,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 00:41:11,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601799943] [2023-12-20 00:41:11,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:41:11,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 00:41:11,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:41:11,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 00:41:11,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-20 00:41:11,570 INFO L87 Difference]: Start difference. First operand 9339 states and 14761 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 00:41:13,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:41:13,091 INFO L93 Difference]: Finished difference Result 26478 states and 41848 transitions. [2023-12-20 00:41:13,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-20 00:41:13,092 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 80 [2023-12-20 00:41:13,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:41:13,149 INFO L225 Difference]: With dead ends: 26478 [2023-12-20 00:41:13,149 INFO L226 Difference]: Without dead ends: 17150 [2023-12-20 00:41:13,178 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 [2023-12-20 00:41:13,179 INFO L413 NwaCegarLoop]: 256 mSDtfsCounter, 782 mSDsluCounter, 438 mSDsCounter, 0 mSdLazyCounter, 1243 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 811 SdHoareTripleChecker+Valid, 694 SdHoareTripleChecker+Invalid, 1318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-20 00:41:13,179 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [811 Valid, 694 Invalid, 1318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1243 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-20 00:41:13,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17150 states. [2023-12-20 00:41:13,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17150 to 13994. [2023-12-20 00:41:13,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13994 states, 12205 states have (on average 1.5231462515362557) internal successors, (18590), 12335 states have internal predecessors, (18590), 1104 states have call successors, (1104), 588 states have call predecessors, (1104), 684 states have return successors, (2141), 1134 states have call predecessors, (2141), 1104 states have call successors, (2141) [2023-12-20 00:41:13,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13994 states to 13994 states and 21835 transitions. [2023-12-20 00:41:13,957 INFO L78 Accepts]: Start accepts. Automaton has 13994 states and 21835 transitions. Word has length 80 [2023-12-20 00:41:13,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:41:13,957 INFO L495 AbstractCegarLoop]: Abstraction has 13994 states and 21835 transitions. [2023-12-20 00:41:13,957 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 00:41:13,957 INFO L276 IsEmpty]: Start isEmpty. Operand 13994 states and 21835 transitions. [2023-12-20 00:41:13,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-20 00:41:13,988 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:41:13,988 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] [2023-12-20 00:41:13,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-20 00:41:13,988 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:41:13,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:41:13,989 INFO L85 PathProgramCache]: Analyzing trace with hash 119505889, now seen corresponding path program 1 times [2023-12-20 00:41:13,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:41:13,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841215655] [2023-12-20 00:41:13,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:41:13,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:41:13,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:41:14,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:41:14,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:41:14,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-20 00:41:14,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:41:14,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-20 00:41:14,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:41:14,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-20 00:41:14,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:41:14,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-20 00:41:14,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:41:14,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-20 00:41:14,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:41:14,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-20 00:41:14,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:41:14,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-20 00:41:14,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:41:14,125 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-20 00:41:14,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:41:14,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841215655] [2023-12-20 00:41:14,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841215655] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 00:41:14,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1853551879] [2023-12-20 00:41:14,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:41:14,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 00:41:14,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 00:41:14,132 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 00:41:14,146 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-20 00:41:14,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:41:14,273 INFO L262 TraceCheckSpWp]: Trace formula consists of 520 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 00:41:14,282 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 00:41:14,365 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-20 00:41:14,366 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 00:41:14,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1853551879] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:41:14,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 00:41:14,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-12-20 00:41:14,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329676501] [2023-12-20 00:41:14,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:41:14,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 00:41:14,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:41:14,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 00:41:14,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:41:14,367 INFO L87 Difference]: Start difference. First operand 13994 states and 21835 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, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-20 00:41:15,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:41:15,321 INFO L93 Difference]: Finished difference Result 41663 states and 65423 transitions. [2023-12-20 00:41:15,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 00:41:15,321 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, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 130 [2023-12-20 00:41:15,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:41:15,419 INFO L225 Difference]: With dead ends: 41663 [2023-12-20 00:41:15,419 INFO L226 Difference]: Without dead ends: 27680 [2023-12-20 00:41:15,458 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:41:15,458 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 204 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 432 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 [2023-12-20 00:41:15,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 432 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 00:41:15,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27680 states. [2023-12-20 00:41:16,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27680 to 27580. [2023-12-20 00:41:16,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27580 states, 24057 states have (on average 1.5184353826329136) internal successors, (36529), 24316 states have internal predecessors, (36529), 2154 states have call successors, (2154), 1176 states have call predecessors, (2154), 1368 states have return successors, (4165), 2151 states have call predecessors, (4165), 2154 states have call successors, (4165) [2023-12-20 00:41:16,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27580 states to 27580 states and 42848 transitions. [2023-12-20 00:41:16,699 INFO L78 Accepts]: Start accepts. Automaton has 27580 states and 42848 transitions. Word has length 130 [2023-12-20 00:41:16,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:41:16,699 INFO L495 AbstractCegarLoop]: Abstraction has 27580 states and 42848 transitions. [2023-12-20 00:41:16,699 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, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-20 00:41:16,700 INFO L276 IsEmpty]: Start isEmpty. Operand 27580 states and 42848 transitions. [2023-12-20 00:41:16,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-20 00:41:16,752 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:41:16,753 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] [2023-12-20 00:41:16,762 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-20 00:41:16,959 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 [2023-12-20 00:41:16,959 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:41:16,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:41:16,959 INFO L85 PathProgramCache]: Analyzing trace with hash -564427071, now seen corresponding path program 1 times [2023-12-20 00:41:16,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:41:16,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340095066] [2023-12-20 00:41:16,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:41:16,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:41:16,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:41:16,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:41:17,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:41:17,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-20 00:41:17,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:41:17,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-20 00:41:17,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:41:17,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-20 00:41:17,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:41:17,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-20 00:41:17,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:41:17,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-20 00:41:17,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:41:17,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-20 00:41:17,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:41:17,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-20 00:41:17,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:41:17,094 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-20 00:41:17,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:41:17,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340095066] [2023-12-20 00:41:17,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340095066] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 00:41:17,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1043755077] [2023-12-20 00:41:17,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:41:17,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 00:41:17,095 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 00:41:17,096 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 00:41:17,116 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-20 00:41:17,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:41:17,205 INFO L262 TraceCheckSpWp]: Trace formula consists of 514 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 00:41:17,216 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 00:41:17,274 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-20 00:41:17,274 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 00:41:17,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1043755077] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:41:17,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 00:41:17,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-12-20 00:41:17,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546568021] [2023-12-20 00:41:17,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:41:17,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 00:41:17,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:41:17,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 00:41:17,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:41:17,276 INFO L87 Difference]: Start difference. First operand 27580 states and 42848 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, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-20 00:41:19,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:41:19,199 INFO L93 Difference]: Finished difference Result 82125 states and 128430 transitions. [2023-12-20 00:41:19,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 00:41:19,201 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, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 130 [2023-12-20 00:41:19,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:41:19,395 INFO L225 Difference]: With dead ends: 82125 [2023-12-20 00:41:19,395 INFO L226 Difference]: Without dead ends: 54556 [2023-12-20 00:41:19,442 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:41:19,444 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 199 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 432 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 [2023-12-20 00:41:19,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 432 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 00:41:19,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54556 states. [2023-12-20 00:41:21,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54556 to 54358. [2023-12-20 00:41:21,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54358 states, 47417 states have (on average 1.5135710821013562) internal successors, (71769), 47934 states have internal predecessors, (71769), 4204 states have call successors, (4204), 2352 states have call predecessors, (4204), 2736 states have return successors, (8163), 4135 states have call predecessors, (8163), 4204 states have call successors, (8163) [2023-12-20 00:41:21,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54358 states to 54358 states and 84136 transitions. [2023-12-20 00:41:21,583 INFO L78 Accepts]: Start accepts. Automaton has 54358 states and 84136 transitions. Word has length 130 [2023-12-20 00:41:21,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:41:21,583 INFO L495 AbstractCegarLoop]: Abstraction has 54358 states and 84136 transitions. [2023-12-20 00:41:21,584 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, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-20 00:41:21,584 INFO L276 IsEmpty]: Start isEmpty. Operand 54358 states and 84136 transitions. [2023-12-20 00:41:21,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-20 00:41:21,696 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:41:21,697 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] [2023-12-20 00:41:21,707 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-20 00:41:21,903 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 [2023-12-20 00:41:21,903 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:41:21,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:41:21,904 INFO L85 PathProgramCache]: Analyzing trace with hash 715208673, now seen corresponding path program 1 times [2023-12-20 00:41:21,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:41:21,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425067084] [2023-12-20 00:41:21,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:41:21,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:41:21,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:41:21,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:41:21,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:41:21,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-20 00:41:21,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:41:21,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-20 00:41:21,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:41:21,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-20 00:41:22,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:41:22,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-20 00:41:22,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:41:22,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-20 00:41:22,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:41:22,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-20 00:41:22,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:41:22,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-20 00:41:22,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:41:22,023 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-20 00:41:22,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:41:22,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425067084] [2023-12-20 00:41:22,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425067084] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 00:41:22,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [124271273] [2023-12-20 00:41:22,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:41:22,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 00:41:22,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 00:41:22,025 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 00:41:22,043 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-20 00:41:22,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:41:22,129 INFO L262 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 00:41:22,131 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 00:41:22,152 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-12-20 00:41:22,152 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 00:41:22,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [124271273] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:41:22,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 00:41:22,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-20 00:41:22,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592021526] [2023-12-20 00:41:22,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:41:22,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 00:41:22,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:41:22,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 00:41:22,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:41:22,154 INFO L87 Difference]: Start difference. First operand 54358 states and 84136 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-20 00:41:25,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:41:25,340 INFO L93 Difference]: Finished difference Result 161084 states and 252187 transitions. [2023-12-20 00:41:25,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 00:41:25,346 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), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 130 [2023-12-20 00:41:25,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:41:25,787 INFO L225 Difference]: With dead ends: 161084 [2023-12-20 00:41:25,787 INFO L226 Difference]: Without dead ends: 106738 [2023-12-20 00:41:25,913 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:41:25,914 INFO L413 NwaCegarLoop]: 435 mSDtfsCounter, 218 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 661 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 00:41:25,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 661 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 00:41:26,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106738 states. [2023-12-20 00:41:30,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106738 to 106738. [2023-12-20 00:41:30,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106738 states, 93122 states have (on average 1.5075384978844957) internal successors, (140385), 94024 states have internal predecessors, (140385), 8143 states have call successors, (8143), 4704 states have call predecessors, (8143), 5472 states have return successors, (17646), 8137 states have call predecessors, (17646), 8143 states have call successors, (17646) [2023-12-20 00:41:30,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106738 states to 106738 states and 166174 transitions. [2023-12-20 00:41:30,773 INFO L78 Accepts]: Start accepts. Automaton has 106738 states and 166174 transitions. Word has length 130 [2023-12-20 00:41:30,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:41:30,774 INFO L495 AbstractCegarLoop]: Abstraction has 106738 states and 166174 transitions. [2023-12-20 00:41:30,774 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), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-20 00:41:30,774 INFO L276 IsEmpty]: Start isEmpty. Operand 106738 states and 166174 transitions. [2023-12-20 00:41:31,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2023-12-20 00:41:31,345 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:41:31,346 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] [2023-12-20 00:41:31,355 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-20 00:41:31,552 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 [2023-12-20 00:41:31,552 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:41:31,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:41:31,552 INFO L85 PathProgramCache]: Analyzing trace with hash -427065206, now seen corresponding path program 1 times [2023-12-20 00:41:31,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:41:31,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492256359] [2023-12-20 00:41:31,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:41:31,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:41:31,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:41:31,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:41:31,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:41:31,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-20 00:41:31,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:41:31,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-20 00:41:31,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:41:31,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-20 00:41:31,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:41:31,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-20 00:41:31,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:41:31,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-20 00:41:31,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:41:31,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-20 00:41:31,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:41:31,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-12-20 00:41:31,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:41:31,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-20 00:41:31,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:41:31,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2023-12-20 00:41:31,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:41:31,695 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-12-20 00:41:31,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:41:31,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492256359] [2023-12-20 00:41:31,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492256359] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 00:41:31,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [406755411] [2023-12-20 00:41:31,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:41:31,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 00:41:31,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 00:41:31,697 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 00:41:31,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-20 00:41:31,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:41:31,814 INFO L262 TraceCheckSpWp]: Trace formula consists of 642 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 00:41:31,820 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 00:41:31,956 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-12-20 00:41:31,957 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 00:41:31,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [406755411] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:41:31,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 00:41:31,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-12-20 00:41:31,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536566857] [2023-12-20 00:41:31,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:41:31,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 00:41:31,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:41:31,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 00:41:31,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:41:31,959 INFO L87 Difference]: Start difference. First operand 106738 states and 166174 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, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-20 00:41:38,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:41:38,606 INFO L93 Difference]: Finished difference Result 317808 states and 498997 transitions. [2023-12-20 00:41:38,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 00:41:38,606 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, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 168 [2023-12-20 00:41:38,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:41:39,525 INFO L225 Difference]: With dead ends: 317808 [2023-12-20 00:41:39,525 INFO L226 Difference]: Without dead ends: 211088 [2023-12-20 00:41:39,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:41:39,693 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 148 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 432 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 [2023-12-20 00:41:39,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 432 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 00:41:39,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211088 states. [2023-12-20 00:41:46,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211088 to 210302. [2023-12-20 00:41:47,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210302 states, 183478 states have (on average 1.5023327047384427) internal successors, (275645), 185280 states have internal predecessors, (275645), 15879 states have call successors, (15879), 9408 states have call predecessors, (15879), 10944 states have return successors, (34558), 15741 states have call predecessors, (34558), 15879 states have call successors, (34558) [2023-12-20 00:41:48,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210302 states to 210302 states and 326082 transitions. [2023-12-20 00:41:48,066 INFO L78 Accepts]: Start accepts. Automaton has 210302 states and 326082 transitions. Word has length 168 [2023-12-20 00:41:48,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:41:48,067 INFO L495 AbstractCegarLoop]: Abstraction has 210302 states and 326082 transitions. [2023-12-20 00:41:48,067 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, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-20 00:41:48,067 INFO L276 IsEmpty]: Start isEmpty. Operand 210302 states and 326082 transitions. [2023-12-20 00:41:48,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2023-12-20 00:41:48,472 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:41:48,472 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] [2023-12-20 00:41:48,483 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-20 00:41:48,682 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 [2023-12-20 00:41:48,683 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:41:48,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:41:48,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1257082305, now seen corresponding path program 1 times [2023-12-20 00:41:48,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:41:48,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250229438] [2023-12-20 00:41:48,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:41:48,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:41:48,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:41:48,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 00:41:48,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:41:48,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-20 00:41:48,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:41:48,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-20 00:41:48,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:41:48,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-20 00:41:48,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:41:48,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-20 00:41:48,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:41:48,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-20 00:41:48,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:41:48,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-20 00:41:49,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:41:49,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-20 00:41:49,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:41:49,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-20 00:41:49,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:41:49,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2023-12-20 00:41:49,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:41:49,047 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-12-20 00:41:49,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:41:49,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250229438] [2023-12-20 00:41:49,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250229438] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 00:41:49,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [284791647] [2023-12-20 00:41:49,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:41:49,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 00:41:49,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 00:41:49,049 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) [2023-12-20 00:41:49,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-20 00:41:49,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:41:49,192 INFO L262 TraceCheckSpWp]: Trace formula consists of 642 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 00:41:49,195 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 00:41:49,303 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-12-20 00:41:49,304 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 00:41:49,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [284791647] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:41:49,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 00:41:49,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-12-20 00:41:49,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401116024] [2023-12-20 00:41:49,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:41:49,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 00:41:49,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:41:49,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 00:41:49,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:41:49,306 INFO L87 Difference]: Start difference. First operand 210302 states and 326082 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, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10)