./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/systemc/kundu2.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/systemc/kundu2.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 87760fc84dfa44e1b5109b35af0fae7e5f68f814afbb1ba90e7b46e4e9e3b4bf --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 02:17:46,127 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 02:17:46,207 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 02:17:46,215 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 02:17:46,215 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 02:17:46,243 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 02:17:46,243 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 02:17:46,244 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 02:17:46,244 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 02:17:46,244 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 02:17:46,245 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 02:17:46,245 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 02:17:46,250 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 02:17:46,250 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 02:17:46,250 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 02:17:46,251 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 02:17:46,251 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 02:17:46,251 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 02:17:46,252 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 02:17:46,252 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 02:17:46,253 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 02:17:46,254 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 02:17:46,254 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 02:17:46,254 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 02:17:46,255 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 02:17:46,255 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 02:17:46,255 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 02:17:46,256 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 02:17:46,256 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 02:17:46,257 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 02:17:46,257 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 02:17:46,257 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 02:17:46,258 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 02:17:46,258 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 02:17:46,258 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 02:17:46,259 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 02:17:46,259 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 02:17:46,259 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 02:17:46,259 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 02:17:46,260 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 02:17:46,260 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 02:17:46,262 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 02:17:46,262 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 87760fc84dfa44e1b5109b35af0fae7e5f68f814afbb1ba90e7b46e4e9e3b4bf [2024-11-22 02:17:46,556 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 02:17:46,585 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 02:17:46,589 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 02:17:46,590 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 02:17:46,591 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 02:17:46,592 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/systemc/kundu2.cil.c [2024-11-22 02:17:48,104 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 02:17:48,279 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 02:17:48,279 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/kundu2.cil.c [2024-11-22 02:17:48,296 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d19cc3764/ed46d46a646f4baab509eb0b8c0265fe/FLAGa0060ada2 [2024-11-22 02:17:48,670 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d19cc3764/ed46d46a646f4baab509eb0b8c0265fe [2024-11-22 02:17:48,672 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 02:17:48,674 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 02:17:48,675 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 02:17:48,675 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 02:17:48,683 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 02:17:48,687 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:17:48" (1/1) ... [2024-11-22 02:17:48,688 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4967fbe2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:17:48, skipping insertion in model container [2024-11-22 02:17:48,688 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:17:48" (1/1) ... [2024-11-22 02:17:48,721 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 02:17:48,968 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/kundu2.cil.c[636,649] [2024-11-22 02:17:49,089 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 02:17:49,109 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 02:17:49,121 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/kundu2.cil.c[636,649] [2024-11-22 02:17:49,167 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 02:17:49,193 INFO L204 MainTranslator]: Completed translation [2024-11-22 02:17:49,194 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:17:49 WrapperNode [2024-11-22 02:17:49,194 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 02:17:49,196 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 02:17:49,197 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 02:17:49,197 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 02:17:49,205 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:17:49" (1/1) ... [2024-11-22 02:17:49,214 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:17:49" (1/1) ... [2024-11-22 02:17:49,241 INFO L138 Inliner]: procedures = 34, calls = 40, calls flagged for inlining = 17, calls inlined = 17, statements flattened = 312 [2024-11-22 02:17:49,241 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 02:17:49,242 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 02:17:49,242 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 02:17:49,242 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 02:17:49,254 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:17:49" (1/1) ... [2024-11-22 02:17:49,254 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:17:49" (1/1) ... [2024-11-22 02:17:49,257 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:17:49" (1/1) ... [2024-11-22 02:17:49,272 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]. [2024-11-22 02:17:49,273 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:17:49" (1/1) ... [2024-11-22 02:17:49,273 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:17:49" (1/1) ... [2024-11-22 02:17:49,278 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:17:49" (1/1) ... [2024-11-22 02:17:49,283 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:17:49" (1/1) ... [2024-11-22 02:17:49,285 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:17:49" (1/1) ... [2024-11-22 02:17:49,287 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:17:49" (1/1) ... [2024-11-22 02:17:49,289 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 02:17:49,290 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 02:17:49,290 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 02:17:49,291 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 02:17:49,292 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:17:49" (1/1) ... [2024-11-22 02:17:49,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 02:17:49,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:17:49,329 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) [2024-11-22 02:17:49,339 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 [2024-11-22 02:17:49,419 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 02:17:49,419 INFO L130 BoogieDeclarations]: Found specification of procedure write_data [2024-11-22 02:17:49,419 INFO L138 BoogieDeclarations]: Found implementation of procedure write_data [2024-11-22 02:17:49,419 INFO L130 BoogieDeclarations]: Found specification of procedure error [2024-11-22 02:17:49,419 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2024-11-22 02:17:49,419 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2024-11-22 02:17:49,419 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2024-11-22 02:17:49,420 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2024-11-22 02:17:49,420 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2024-11-22 02:17:49,420 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2024-11-22 02:17:49,420 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2024-11-22 02:17:49,420 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2024-11-22 02:17:49,420 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2024-11-22 02:17:49,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 02:17:49,420 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2024-11-22 02:17:49,420 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2024-11-22 02:17:49,420 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 02:17:49,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 02:17:49,503 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 02:17:49,505 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 02:17:49,819 INFO L? ?]: Removed 51 outVars from TransFormulas that were not future-live. [2024-11-22 02:17:49,820 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 02:17:49,834 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 02:17:49,834 INFO L316 CfgBuilder]: Removed 5 assume(true) statements. [2024-11-22 02:17:49,835 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:17:49 BoogieIcfgContainer [2024-11-22 02:17:49,835 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 02:17:49,837 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 02:17:49,837 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 02:17:49,840 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 02:17:49,841 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:17:48" (1/3) ... [2024-11-22 02:17:49,841 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@232bf8dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:17:49, skipping insertion in model container [2024-11-22 02:17:49,841 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:17:49" (2/3) ... [2024-11-22 02:17:49,842 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@232bf8dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:17:49, skipping insertion in model container [2024-11-22 02:17:49,842 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:17:49" (3/3) ... [2024-11-22 02:17:49,843 INFO L112 eAbstractionObserver]: Analyzing ICFG kundu2.cil.c [2024-11-22 02:17:49,860 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 02:17:49,860 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-22 02:17:49,945 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 02:17:49,951 INFO L333 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, 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;@3c4fb5f2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 02:17:49,952 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-22 02:17:49,958 INFO L276 IsEmpty]: Start isEmpty. Operand has 134 states, 107 states have (on average 1.514018691588785) internal successors, (162), 111 states have internal predecessors, (162), 18 states have call successors, (18), 7 states have call predecessors, (18), 7 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-11-22 02:17:49,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-22 02:17:49,969 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:17:49,971 INFO L215 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] [2024-11-22 02:17:49,972 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:17:49,979 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:17:49,979 INFO L85 PathProgramCache]: Analyzing trace with hash 734266899, now seen corresponding path program 1 times [2024-11-22 02:17:49,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:17:49,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170489842] [2024-11-22 02:17:49,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:17:49,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:17:50,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:17:50,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 02:17:50,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:17:50,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170489842] [2024-11-22 02:17:50,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170489842] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:17:50,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:17:50,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 02:17:50,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070677160] [2024-11-22 02:17:50,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:17:50,302 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 02:17:50,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:17:50,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 02:17:50,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 02:17:50,347 INFO L87 Difference]: Start difference. First operand has 134 states, 107 states have (on average 1.514018691588785) internal successors, (162), 111 states have internal predecessors, (162), 18 states have call successors, (18), 7 states have call predecessors, (18), 7 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 02:17:50,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:17:50,453 INFO L93 Difference]: Finished difference Result 259 states and 388 transitions. [2024-11-22 02:17:50,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 02:17:50,456 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 59 [2024-11-22 02:17:50,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:17:50,469 INFO L225 Difference]: With dead ends: 259 [2024-11-22 02:17:50,469 INFO L226 Difference]: Without dead ends: 127 [2024-11-22 02:17:50,473 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 02:17:50,482 INFO L432 NwaCegarLoop]: 183 mSDtfsCounter, 179 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 02:17:50,484 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 183 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 02:17:50,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2024-11-22 02:17:50,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2024-11-22 02:17:50,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 102 states have (on average 1.4411764705882353) internal successors, (147), 105 states have internal predecessors, (147), 18 states have call successors, (18), 7 states have call predecessors, (18), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-22 02:17:50,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 180 transitions. [2024-11-22 02:17:50,546 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 180 transitions. Word has length 59 [2024-11-22 02:17:50,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:17:50,547 INFO L471 AbstractCegarLoop]: Abstraction has 127 states and 180 transitions. [2024-11-22 02:17:50,547 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 02:17:50,547 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 180 transitions. [2024-11-22 02:17:50,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-22 02:17:50,549 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:17:50,549 INFO L215 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] [2024-11-22 02:17:50,550 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 02:17:50,550 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:17:50,550 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:17:50,551 INFO L85 PathProgramCache]: Analyzing trace with hash -804073131, now seen corresponding path program 1 times [2024-11-22 02:17:50,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:17:50,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115641154] [2024-11-22 02:17:50,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:17:50,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:17:50,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:17:50,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 02:17:50,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:17:50,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115641154] [2024-11-22 02:17:50,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115641154] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:17:50,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:17:50,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 02:17:50,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230589861] [2024-11-22 02:17:50,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:17:50,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 02:17:50,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:17:50,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 02:17:50,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 02:17:50,746 INFO L87 Difference]: Start difference. First operand 127 states and 180 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 02:17:50,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:17:50,919 INFO L93 Difference]: Finished difference Result 356 states and 509 transitions. [2024-11-22 02:17:50,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 02:17:50,920 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 59 [2024-11-22 02:17:50,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:17:50,922 INFO L225 Difference]: With dead ends: 356 [2024-11-22 02:17:50,923 INFO L226 Difference]: Without dead ends: 240 [2024-11-22 02:17:50,924 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 02:17:50,927 INFO L432 NwaCegarLoop]: 328 mSDtfsCounter, 303 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 594 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:17:50,927 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [303 Valid, 594 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:17:50,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2024-11-22 02:17:50,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 234. [2024-11-22 02:17:50,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 192 states have (on average 1.421875) internal successors, (273), 196 states have internal predecessors, (273), 29 states have call successors, (29), 13 states have call predecessors, (29), 12 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-22 02:17:50,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 328 transitions. [2024-11-22 02:17:50,968 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 328 transitions. Word has length 59 [2024-11-22 02:17:50,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:17:50,969 INFO L471 AbstractCegarLoop]: Abstraction has 234 states and 328 transitions. [2024-11-22 02:17:50,969 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 02:17:50,969 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 328 transitions. [2024-11-22 02:17:50,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-22 02:17:50,970 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:17:50,970 INFO L215 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] [2024-11-22 02:17:50,970 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 02:17:50,970 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:17:50,971 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:17:50,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1094457174, now seen corresponding path program 1 times [2024-11-22 02:17:50,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:17:50,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538731544] [2024-11-22 02:17:50,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:17:50,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:17:50,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:17:51,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 02:17:51,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:17:51,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538731544] [2024-11-22 02:17:51,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538731544] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:17:51,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:17:51,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 02:17:51,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844502951] [2024-11-22 02:17:51,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:17:51,074 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 02:17:51,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:17:51,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 02:17:51,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 02:17:51,075 INFO L87 Difference]: Start difference. First operand 234 states and 328 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 02:17:51,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:17:51,107 INFO L93 Difference]: Finished difference Result 460 states and 651 transitions. [2024-11-22 02:17:51,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 02:17:51,107 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 59 [2024-11-22 02:17:51,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:17:51,113 INFO L225 Difference]: With dead ends: 460 [2024-11-22 02:17:51,114 INFO L226 Difference]: Without dead ends: 237 [2024-11-22 02:17:51,116 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 02:17:51,119 INFO L432 NwaCegarLoop]: 176 mSDtfsCounter, 0 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 698 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 02:17:51,119 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 698 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 02:17:51,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2024-11-22 02:17:51,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 237. [2024-11-22 02:17:51,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 195 states have (on average 1.4102564102564104) internal successors, (275), 199 states have internal predecessors, (275), 29 states have call successors, (29), 13 states have call predecessors, (29), 12 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-22 02:17:51,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 330 transitions. [2024-11-22 02:17:51,148 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 330 transitions. Word has length 59 [2024-11-22 02:17:51,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:17:51,148 INFO L471 AbstractCegarLoop]: Abstraction has 237 states and 330 transitions. [2024-11-22 02:17:51,149 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 02:17:51,149 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 330 transitions. [2024-11-22 02:17:51,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-22 02:17:51,151 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:17:51,151 INFO L215 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] [2024-11-22 02:17:51,152 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 02:17:51,152 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:17:51,152 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:17:51,152 INFO L85 PathProgramCache]: Analyzing trace with hash -750909992, now seen corresponding path program 1 times [2024-11-22 02:17:51,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:17:51,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501857068] [2024-11-22 02:17:51,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:17:51,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:17:51,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:17:51,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 02:17:51,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:17:51,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501857068] [2024-11-22 02:17:51,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501857068] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:17:51,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:17:51,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 02:17:51,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649636913] [2024-11-22 02:17:51,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:17:51,269 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 02:17:51,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:17:51,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 02:17:51,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 02:17:51,271 INFO L87 Difference]: Start difference. First operand 237 states and 330 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 02:17:51,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:17:51,304 INFO L93 Difference]: Finished difference Result 469 states and 659 transitions. [2024-11-22 02:17:51,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 02:17:51,304 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 59 [2024-11-22 02:17:51,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:17:51,306 INFO L225 Difference]: With dead ends: 469 [2024-11-22 02:17:51,306 INFO L226 Difference]: Without dead ends: 243 [2024-11-22 02:17:51,307 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 02:17:51,308 INFO L432 NwaCegarLoop]: 176 mSDtfsCounter, 0 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 698 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 02:17:51,308 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 698 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 02:17:51,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2024-11-22 02:17:51,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2024-11-22 02:17:51,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 201 states have (on average 1.3980099502487562) internal successors, (281), 205 states have internal predecessors, (281), 29 states have call successors, (29), 13 states have call predecessors, (29), 12 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-22 02:17:51,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 336 transitions. [2024-11-22 02:17:51,347 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 336 transitions. Word has length 59 [2024-11-22 02:17:51,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:17:51,347 INFO L471 AbstractCegarLoop]: Abstraction has 243 states and 336 transitions. [2024-11-22 02:17:51,348 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 02:17:51,348 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 336 transitions. [2024-11-22 02:17:51,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-22 02:17:51,349 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:17:51,349 INFO L215 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] [2024-11-22 02:17:51,349 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 02:17:51,349 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:17:51,350 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:17:51,350 INFO L85 PathProgramCache]: Analyzing trace with hash -823296550, now seen corresponding path program 1 times [2024-11-22 02:17:51,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:17:51,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687254879] [2024-11-22 02:17:51,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:17:51,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:17:51,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:17:51,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 02:17:51,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:17:51,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687254879] [2024-11-22 02:17:51,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687254879] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:17:51,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:17:51,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 02:17:51,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596621985] [2024-11-22 02:17:51,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:17:51,423 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 02:17:51,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:17:51,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 02:17:51,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 02:17:51,426 INFO L87 Difference]: Start difference. First operand 243 states and 336 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 02:17:51,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:17:51,749 INFO L93 Difference]: Finished difference Result 981 states and 1359 transitions. [2024-11-22 02:17:51,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 02:17:51,750 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 59 [2024-11-22 02:17:51,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:17:51,753 INFO L225 Difference]: With dead ends: 981 [2024-11-22 02:17:51,753 INFO L226 Difference]: Without dead ends: 719 [2024-11-22 02:17:51,754 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-22 02:17:51,755 INFO L432 NwaCegarLoop]: 367 mSDtfsCounter, 687 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 692 SdHoareTripleChecker+Valid, 859 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 02:17:51,755 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [692 Valid, 859 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 02:17:51,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 719 states. [2024-11-22 02:17:51,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 719 to 563. [2024-11-22 02:17:51,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 474 states have (on average 1.4050632911392404) internal successors, (666), 477 states have internal predecessors, (666), 58 states have call successors, (58), 30 states have call predecessors, (58), 30 states have return successors, (58), 56 states have call predecessors, (58), 55 states have call successors, (58) [2024-11-22 02:17:51,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 782 transitions. [2024-11-22 02:17:51,783 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 782 transitions. Word has length 59 [2024-11-22 02:17:51,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:17:51,784 INFO L471 AbstractCegarLoop]: Abstraction has 563 states and 782 transitions. [2024-11-22 02:17:51,784 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 02:17:51,784 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 782 transitions. [2024-11-22 02:17:51,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-22 02:17:51,785 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:17:51,785 INFO L215 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] [2024-11-22 02:17:51,785 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-22 02:17:51,785 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:17:51,786 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:17:51,786 INFO L85 PathProgramCache]: Analyzing trace with hash 225843183, now seen corresponding path program 1 times [2024-11-22 02:17:51,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:17:51,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957821872] [2024-11-22 02:17:51,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:17:51,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:17:51,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:17:51,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 02:17:51,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:17:51,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957821872] [2024-11-22 02:17:51,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957821872] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:17:51,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:17:51,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 02:17:51,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620547810] [2024-11-22 02:17:51,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:17:51,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 02:17:51,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:17:51,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 02:17:51,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 02:17:51,861 INFO L87 Difference]: Start difference. First operand 563 states and 782 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 02:17:51,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:17:51,893 INFO L93 Difference]: Finished difference Result 1130 states and 1584 transitions. [2024-11-22 02:17:51,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 02:17:51,894 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 60 [2024-11-22 02:17:51,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:17:51,898 INFO L225 Difference]: With dead ends: 1130 [2024-11-22 02:17:51,898 INFO L226 Difference]: Without dead ends: 578 [2024-11-22 02:17:51,900 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 02:17:51,901 INFO L432 NwaCegarLoop]: 176 mSDtfsCounter, 0 mSDsluCounter, 521 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 697 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 02:17:51,902 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 697 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 02:17:51,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2024-11-22 02:17:51,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 578. [2024-11-22 02:17:51,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 578 states, 489 states have (on average 1.392638036809816) internal successors, (681), 492 states have internal predecessors, (681), 58 states have call successors, (58), 30 states have call predecessors, (58), 30 states have return successors, (58), 56 states have call predecessors, (58), 55 states have call successors, (58) [2024-11-22 02:17:51,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 797 transitions. [2024-11-22 02:17:51,951 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 797 transitions. Word has length 60 [2024-11-22 02:17:51,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:17:51,951 INFO L471 AbstractCegarLoop]: Abstraction has 578 states and 797 transitions. [2024-11-22 02:17:51,952 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 02:17:51,952 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 797 transitions. [2024-11-22 02:17:51,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-22 02:17:51,953 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:17:51,953 INFO L215 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] [2024-11-22 02:17:51,953 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-22 02:17:51,953 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:17:51,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:17:51,953 INFO L85 PathProgramCache]: Analyzing trace with hash -2145896079, now seen corresponding path program 1 times [2024-11-22 02:17:51,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:17:51,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840368640] [2024-11-22 02:17:51,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:17:51,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:17:51,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:17:51,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 02:17:51,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:17:51,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840368640] [2024-11-22 02:17:51,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840368640] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:17:51,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:17:51,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 02:17:52,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285106771] [2024-11-22 02:17:52,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:17:52,000 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 02:17:52,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:17:52,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 02:17:52,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 02:17:52,001 INFO L87 Difference]: Start difference. First operand 578 states and 797 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-22 02:17:52,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:17:52,083 INFO L93 Difference]: Finished difference Result 1490 states and 2055 transitions. [2024-11-22 02:17:52,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 02:17:52,083 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 60 [2024-11-22 02:17:52,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:17:52,087 INFO L225 Difference]: With dead ends: 1490 [2024-11-22 02:17:52,087 INFO L226 Difference]: Without dead ends: 924 [2024-11-22 02:17:52,089 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-22 02:17:52,089 INFO L432 NwaCegarLoop]: 184 mSDtfsCounter, 132 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 697 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 02:17:52,090 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 697 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 02:17:52,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 924 states. [2024-11-22 02:17:52,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 924 to 915. [2024-11-22 02:17:52,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 915 states, 774 states have (on average 1.3863049095607236) internal successors, (1073), 784 states have internal predecessors, (1073), 90 states have call successors, (90), 50 states have call predecessors, (90), 50 states have return successors, (90), 81 states have call predecessors, (90), 87 states have call successors, (90) [2024-11-22 02:17:52,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 915 states to 915 states and 1253 transitions. [2024-11-22 02:17:52,146 INFO L78 Accepts]: Start accepts. Automaton has 915 states and 1253 transitions. Word has length 60 [2024-11-22 02:17:52,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:17:52,147 INFO L471 AbstractCegarLoop]: Abstraction has 915 states and 1253 transitions. [2024-11-22 02:17:52,147 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-22 02:17:52,148 INFO L276 IsEmpty]: Start isEmpty. Operand 915 states and 1253 transitions. [2024-11-22 02:17:52,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-22 02:17:52,149 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:17:52,149 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:17:52,149 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-22 02:17:52,149 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:17:52,150 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:17:52,152 INFO L85 PathProgramCache]: Analyzing trace with hash 370475399, now seen corresponding path program 1 times [2024-11-22 02:17:52,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:17:52,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268766861] [2024-11-22 02:17:52,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:17:52,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:17:52,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:17:52,270 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 02:17:52,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:17:52,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268766861] [2024-11-22 02:17:52,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268766861] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:17:52,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:17:52,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 02:17:52,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712308943] [2024-11-22 02:17:52,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:17:52,272 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 02:17:52,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:17:52,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 02:17:52,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 02:17:52,274 INFO L87 Difference]: Start difference. First operand 915 states and 1253 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-22 02:17:52,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:17:52,497 INFO L93 Difference]: Finished difference Result 2532 states and 3486 transitions. [2024-11-22 02:17:52,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 02:17:52,498 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 71 [2024-11-22 02:17:52,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:17:52,505 INFO L225 Difference]: With dead ends: 2532 [2024-11-22 02:17:52,505 INFO L226 Difference]: Without dead ends: 1727 [2024-11-22 02:17:52,507 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-22 02:17:52,509 INFO L432 NwaCegarLoop]: 313 mSDtfsCounter, 283 mSDsluCounter, 928 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 1241 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:17:52,509 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [285 Valid, 1241 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:17:52,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1727 states. [2024-11-22 02:17:52,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1727 to 1709. [2024-11-22 02:17:52,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1709 states, 1452 states have (on average 1.3822314049586777) internal successors, (2007), 1469 states have internal predecessors, (2007), 162 states have call successors, (162), 93 states have call predecessors, (162), 94 states have return successors, (164), 147 states have call predecessors, (164), 159 states have call successors, (164) [2024-11-22 02:17:52,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1709 states to 1709 states and 2333 transitions. [2024-11-22 02:17:52,602 INFO L78 Accepts]: Start accepts. Automaton has 1709 states and 2333 transitions. Word has length 71 [2024-11-22 02:17:52,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:17:52,603 INFO L471 AbstractCegarLoop]: Abstraction has 1709 states and 2333 transitions. [2024-11-22 02:17:52,603 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-22 02:17:52,603 INFO L276 IsEmpty]: Start isEmpty. Operand 1709 states and 2333 transitions. [2024-11-22 02:17:52,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-22 02:17:52,606 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:17:52,606 INFO L215 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] [2024-11-22 02:17:52,606 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-22 02:17:52,607 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:17:52,607 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:17:52,608 INFO L85 PathProgramCache]: Analyzing trace with hash -153594449, now seen corresponding path program 1 times [2024-11-22 02:17:52,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:17:52,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430835417] [2024-11-22 02:17:52,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:17:52,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:17:52,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:17:52,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 02:17:52,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:17:52,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430835417] [2024-11-22 02:17:52,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430835417] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:17:52,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:17:52,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 02:17:52,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312019944] [2024-11-22 02:17:52,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:17:52,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 02:17:52,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:17:52,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 02:17:52,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 02:17:52,682 INFO L87 Difference]: Start difference. First operand 1709 states and 2333 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-22 02:17:52,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:17:52,944 INFO L93 Difference]: Finished difference Result 5096 states and 7018 transitions. [2024-11-22 02:17:52,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 02:17:52,945 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 73 [2024-11-22 02:17:52,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:17:52,960 INFO L225 Difference]: With dead ends: 5096 [2024-11-22 02:17:52,960 INFO L226 Difference]: Without dead ends: 3399 [2024-11-22 02:17:52,965 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 02:17:52,966 INFO L432 NwaCegarLoop]: 225 mSDtfsCounter, 196 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 502 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:17:52,966 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 502 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:17:52,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3399 states. [2024-11-22 02:17:53,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3399 to 3343. [2024-11-22 02:17:53,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3343 states, 2863 states have (on average 1.3569682151589242) internal successors, (3885), 2897 states have internal predecessors, (3885), 288 states have call successors, (288), 173 states have call predecessors, (288), 191 states have return successors, (382), 274 states have call predecessors, (382), 285 states have call successors, (382) [2024-11-22 02:17:53,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3343 states to 3343 states and 4555 transitions. [2024-11-22 02:17:53,252 INFO L78 Accepts]: Start accepts. Automaton has 3343 states and 4555 transitions. Word has length 73 [2024-11-22 02:17:53,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:17:53,252 INFO L471 AbstractCegarLoop]: Abstraction has 3343 states and 4555 transitions. [2024-11-22 02:17:53,252 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-22 02:17:53,252 INFO L276 IsEmpty]: Start isEmpty. Operand 3343 states and 4555 transitions. [2024-11-22 02:17:53,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-22 02:17:53,254 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:17:53,254 INFO L215 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] [2024-11-22 02:17:53,254 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-22 02:17:53,255 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:17:53,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:17:53,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1839774287, now seen corresponding path program 1 times [2024-11-22 02:17:53,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:17:53,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333164456] [2024-11-22 02:17:53,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:17:53,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:17:53,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:17:53,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 02:17:53,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:17:53,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333164456] [2024-11-22 02:17:53,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333164456] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:17:53,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:17:53,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 02:17:53,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566927860] [2024-11-22 02:17:53,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:17:53,281 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 02:17:53,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:17:53,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 02:17:53,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 02:17:53,282 INFO L87 Difference]: Start difference. First operand 3343 states and 4555 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-22 02:17:53,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:17:53,373 INFO L93 Difference]: Finished difference Result 6670 states and 9084 transitions. [2024-11-22 02:17:53,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 02:17:53,374 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 73 [2024-11-22 02:17:53,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:17:53,388 INFO L225 Difference]: With dead ends: 6670 [2024-11-22 02:17:53,388 INFO L226 Difference]: Without dead ends: 3338 [2024-11-22 02:17:53,396 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 02:17:53,396 INFO L432 NwaCegarLoop]: 177 mSDtfsCounter, 172 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 02:17:53,397 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 177 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 02:17:53,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3338 states. [2024-11-22 02:17:53,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3338 to 3338. [2024-11-22 02:17:53,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3338 states, 2861 states have (on average 1.3565186997553302) internal successors, (3881), 2894 states have internal predecessors, (3881), 285 states have call successors, (285), 173 states have call predecessors, (285), 191 states have return successors, (378), 271 states have call predecessors, (378), 282 states have call successors, (378) [2024-11-22 02:17:53,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3338 states to 3338 states and 4544 transitions. [2024-11-22 02:17:53,547 INFO L78 Accepts]: Start accepts. Automaton has 3338 states and 4544 transitions. Word has length 73 [2024-11-22 02:17:53,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:17:53,547 INFO L471 AbstractCegarLoop]: Abstraction has 3338 states and 4544 transitions. [2024-11-22 02:17:53,547 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-22 02:17:53,547 INFO L276 IsEmpty]: Start isEmpty. Operand 3338 states and 4544 transitions. [2024-11-22 02:17:53,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-22 02:17:53,548 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:17:53,548 INFO L215 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] [2024-11-22 02:17:53,549 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-22 02:17:53,549 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:17:53,549 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:17:53,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1321482580, now seen corresponding path program 1 times [2024-11-22 02:17:53,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:17:53,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600242569] [2024-11-22 02:17:53,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:17:53,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:17:53,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:17:53,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 02:17:53,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:17:53,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600242569] [2024-11-22 02:17:53,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600242569] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:17:53,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:17:53,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 02:17:53,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103392117] [2024-11-22 02:17:53,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:17:53,578 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 02:17:53,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:17:53,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 02:17:53,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 02:17:53,579 INFO L87 Difference]: Start difference. First operand 3338 states and 4544 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-22 02:17:53,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:17:53,815 INFO L93 Difference]: Finished difference Result 7663 states and 10439 transitions. [2024-11-22 02:17:53,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 02:17:53,816 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 74 [2024-11-22 02:17:53,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:17:53,893 INFO L225 Difference]: With dead ends: 7663 [2024-11-22 02:17:53,893 INFO L226 Difference]: Without dead ends: 4336 [2024-11-22 02:17:53,903 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 02:17:53,904 INFO L432 NwaCegarLoop]: 207 mSDtfsCounter, 135 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 02:17:53,904 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 356 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 02:17:53,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4336 states. [2024-11-22 02:17:54,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4336 to 3674. [2024-11-22 02:17:54,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3674 states, 3103 states have (on average 1.3103448275862069) internal successors, (4066), 3149 states have internal predecessors, (4066), 346 states have call successors, (346), 207 states have call predecessors, (346), 224 states have return successors, (441), 318 states have call predecessors, (441), 343 states have call successors, (441) [2024-11-22 02:17:54,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3674 states to 3674 states and 4853 transitions. [2024-11-22 02:17:54,212 INFO L78 Accepts]: Start accepts. Automaton has 3674 states and 4853 transitions. Word has length 74 [2024-11-22 02:17:54,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:17:54,213 INFO L471 AbstractCegarLoop]: Abstraction has 3674 states and 4853 transitions. [2024-11-22 02:17:54,213 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-22 02:17:54,213 INFO L276 IsEmpty]: Start isEmpty. Operand 3674 states and 4853 transitions. [2024-11-22 02:17:54,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-22 02:17:54,214 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:17:54,215 INFO L215 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] [2024-11-22 02:17:54,215 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-22 02:17:54,215 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:17:54,215 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:17:54,215 INFO L85 PathProgramCache]: Analyzing trace with hash -728024876, now seen corresponding path program 1 times [2024-11-22 02:17:54,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:17:54,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365047181] [2024-11-22 02:17:54,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:17:54,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:17:54,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:17:54,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 02:17:54,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:17:54,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365047181] [2024-11-22 02:17:54,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365047181] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:17:54,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:17:54,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 02:17:54,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257700338] [2024-11-22 02:17:54,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:17:54,342 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 02:17:54,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:17:54,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 02:17:54,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 02:17:54,343 INFO L87 Difference]: Start difference. First operand 3674 states and 4853 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-22 02:17:54,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:17:54,731 INFO L93 Difference]: Finished difference Result 6976 states and 9221 transitions. [2024-11-22 02:17:54,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 02:17:54,732 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 75 [2024-11-22 02:17:54,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:17:54,756 INFO L225 Difference]: With dead ends: 6976 [2024-11-22 02:17:54,756 INFO L226 Difference]: Without dead ends: 3685 [2024-11-22 02:17:54,771 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-22 02:17:54,772 INFO L432 NwaCegarLoop]: 306 mSDtfsCounter, 272 mSDsluCounter, 576 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 882 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:17:54,773 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [272 Valid, 882 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:17:54,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3685 states. [2024-11-22 02:17:55,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3685 to 3670. [2024-11-22 02:17:55,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3670 states, 3099 states have (on average 1.308163923846402) internal successors, (4054), 3145 states have internal predecessors, (4054), 346 states have call successors, (346), 207 states have call predecessors, (346), 224 states have return successors, (441), 318 states have call predecessors, (441), 343 states have call successors, (441) [2024-11-22 02:17:55,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3670 states to 3670 states and 4841 transitions. [2024-11-22 02:17:55,073 INFO L78 Accepts]: Start accepts. Automaton has 3670 states and 4841 transitions. Word has length 75 [2024-11-22 02:17:55,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:17:55,074 INFO L471 AbstractCegarLoop]: Abstraction has 3670 states and 4841 transitions. [2024-11-22 02:17:55,074 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-22 02:17:55,074 INFO L276 IsEmpty]: Start isEmpty. Operand 3670 states and 4841 transitions. [2024-11-22 02:17:55,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-22 02:17:55,076 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:17:55,076 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-22 02:17:55,077 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-22 02:17:55,077 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:17:55,078 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:17:55,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1139883952, now seen corresponding path program 1 times [2024-11-22 02:17:55,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:17:55,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675766245] [2024-11-22 02:17:55,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:17:55,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:17:55,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:17:55,149 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-22 02:17:55,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:17:55,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675766245] [2024-11-22 02:17:55,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675766245] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:17:55,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:17:55,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 02:17:55,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869300319] [2024-11-22 02:17:55,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:17:55,152 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 02:17:55,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:17:55,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 02:17:55,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 02:17:55,153 INFO L87 Difference]: Start difference. First operand 3670 states and 4841 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-22 02:17:55,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:17:55,677 INFO L93 Difference]: Finished difference Result 11139 states and 14874 transitions. [2024-11-22 02:17:55,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 02:17:55,677 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 79 [2024-11-22 02:17:55,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:17:55,709 INFO L225 Difference]: With dead ends: 11139 [2024-11-22 02:17:55,710 INFO L226 Difference]: Without dead ends: 7481 [2024-11-22 02:17:55,721 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 02:17:55,721 INFO L432 NwaCegarLoop]: 154 mSDtfsCounter, 216 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 02:17:55,722 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 393 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 02:17:55,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7481 states. [2024-11-22 02:17:55,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7481 to 7471. [2024-11-22 02:17:56,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7471 states, 6347 states have (on average 1.2891129667559478) internal successors, (8182), 6446 states have internal predecessors, (8182), 658 states have call successors, (658), 403 states have call predecessors, (658), 465 states have return successors, (967), 622 states have call predecessors, (967), 655 states have call successors, (967) [2024-11-22 02:17:56,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7471 states to 7471 states and 9807 transitions. [2024-11-22 02:17:56,028 INFO L78 Accepts]: Start accepts. Automaton has 7471 states and 9807 transitions. Word has length 79 [2024-11-22 02:17:56,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:17:56,028 INFO L471 AbstractCegarLoop]: Abstraction has 7471 states and 9807 transitions. [2024-11-22 02:17:56,028 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-22 02:17:56,028 INFO L276 IsEmpty]: Start isEmpty. Operand 7471 states and 9807 transitions. [2024-11-22 02:17:56,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-22 02:17:56,030 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:17:56,030 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-22 02:17:56,031 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-22 02:17:56,031 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:17:56,031 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:17:56,031 INFO L85 PathProgramCache]: Analyzing trace with hash 1412022136, now seen corresponding path program 1 times [2024-11-22 02:17:56,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:17:56,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106547004] [2024-11-22 02:17:56,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:17:56,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:17:56,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:17:56,081 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-22 02:17:56,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:17:56,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106547004] [2024-11-22 02:17:56,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106547004] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:17:56,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:17:56,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 02:17:56,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652008034] [2024-11-22 02:17:56,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:17:56,082 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 02:17:56,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:17:56,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 02:17:56,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 02:17:56,083 INFO L87 Difference]: Start difference. First operand 7471 states and 9807 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-22 02:17:57,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:17:57,377 INFO L93 Difference]: Finished difference Result 25093 states and 34149 transitions. [2024-11-22 02:17:57,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 02:17:57,378 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 81 [2024-11-22 02:17:57,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:17:57,465 INFO L225 Difference]: With dead ends: 25093 [2024-11-22 02:17:57,466 INFO L226 Difference]: Without dead ends: 17634 [2024-11-22 02:17:57,495 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-22 02:17:57,495 INFO L432 NwaCegarLoop]: 312 mSDtfsCounter, 753 mSDsluCounter, 506 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 753 SdHoareTripleChecker+Valid, 818 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 02:17:57,496 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [753 Valid, 818 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 02:17:57,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17634 states. [2024-11-22 02:17:58,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17634 to 17359. [2024-11-22 02:17:58,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17359 states, 14665 states have (on average 1.270780770542107) internal successors, (18636), 14893 states have internal predecessors, (18636), 1579 states have call successors, (1579), 966 states have call predecessors, (1579), 1114 states have return successors, (2966), 1501 states have call predecessors, (2966), 1576 states have call successors, (2966) [2024-11-22 02:17:58,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17359 states to 17359 states and 23181 transitions. [2024-11-22 02:17:58,465 INFO L78 Accepts]: Start accepts. Automaton has 17359 states and 23181 transitions. Word has length 81 [2024-11-22 02:17:58,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:17:58,465 INFO L471 AbstractCegarLoop]: Abstraction has 17359 states and 23181 transitions. [2024-11-22 02:17:58,465 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-22 02:17:58,466 INFO L276 IsEmpty]: Start isEmpty. Operand 17359 states and 23181 transitions. [2024-11-22 02:17:58,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-22 02:17:58,469 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:17:58,469 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:17:58,469 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-22 02:17:58,469 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:17:58,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:17:58,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1579582129, now seen corresponding path program 1 times [2024-11-22 02:17:58,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:17:58,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350667657] [2024-11-22 02:17:58,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:17:58,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:17:58,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:17:58,542 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 02:17:58,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:17:58,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350667657] [2024-11-22 02:17:58,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350667657] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:17:58,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:17:58,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 02:17:58,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081903489] [2024-11-22 02:17:58,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:17:58,544 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 02:17:58,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:17:58,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 02:17:58,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 02:17:58,544 INFO L87 Difference]: Start difference. First operand 17359 states and 23181 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-22 02:18:00,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:18:00,185 INFO L93 Difference]: Finished difference Result 42845 states and 57485 transitions. [2024-11-22 02:18:00,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 02:18:00,185 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 84 [2024-11-22 02:18:00,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:18:00,356 INFO L225 Difference]: With dead ends: 42845 [2024-11-22 02:18:00,356 INFO L226 Difference]: Without dead ends: 28093 [2024-11-22 02:18:00,413 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 02:18:00,494 INFO L432 NwaCegarLoop]: 443 mSDtfsCounter, 412 mSDsluCounter, 685 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 412 SdHoareTripleChecker+Valid, 1128 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 02:18:00,494 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [412 Valid, 1128 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 02:18:00,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28093 states. [2024-11-22 02:18:01,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28093 to 27850. [2024-11-22 02:18:01,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27850 states, 23585 states have (on average 1.2730973076107694) internal successors, (30026), 23912 states have internal predecessors, (30026), 2499 states have call successors, (2499), 1526 states have call predecessors, (2499), 1765 states have return successors, (4770), 2413 states have call predecessors, (4770), 2496 states have call successors, (4770) [2024-11-22 02:18:01,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27850 states to 27850 states and 37295 transitions. [2024-11-22 02:18:02,019 INFO L78 Accepts]: Start accepts. Automaton has 27850 states and 37295 transitions. Word has length 84 [2024-11-22 02:18:02,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:18:02,020 INFO L471 AbstractCegarLoop]: Abstraction has 27850 states and 37295 transitions. [2024-11-22 02:18:02,021 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-22 02:18:02,021 INFO L276 IsEmpty]: Start isEmpty. Operand 27850 states and 37295 transitions. [2024-11-22 02:18:02,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-22 02:18:02,027 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:18:02,027 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:18:02,027 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-22 02:18:02,028 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:18:02,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:18:02,028 INFO L85 PathProgramCache]: Analyzing trace with hash 1643055201, now seen corresponding path program 1 times [2024-11-22 02:18:02,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:18:02,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534491162] [2024-11-22 02:18:02,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:18:02,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:18:02,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:18:02,165 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 02:18:02,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:18:02,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534491162] [2024-11-22 02:18:02,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534491162] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:18:02,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:18:02,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 02:18:02,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831398860] [2024-11-22 02:18:02,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:18:02,166 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 02:18:02,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:18:02,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 02:18:02,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 02:18:02,167 INFO L87 Difference]: Start difference. First operand 27850 states and 37295 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-22 02:18:04,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:18:04,173 INFO L93 Difference]: Finished difference Result 74535 states and 100369 transitions. [2024-11-22 02:18:04,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 02:18:04,174 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 87 [2024-11-22 02:18:04,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:18:04,342 INFO L225 Difference]: With dead ends: 74535 [2024-11-22 02:18:04,343 INFO L226 Difference]: Without dead ends: 49292 [2024-11-22 02:18:04,391 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-22 02:18:04,392 INFO L432 NwaCegarLoop]: 453 mSDtfsCounter, 426 mSDsluCounter, 1206 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 426 SdHoareTripleChecker+Valid, 1659 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 02:18:04,392 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [426 Valid, 1659 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 02:18:04,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49292 states. [2024-11-22 02:18:06,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49292 to 47310. [2024-11-22 02:18:06,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47310 states, 40169 states have (on average 1.2784983444945106) internal successors, (51356), 40671 states have internal predecessors, (51356), 4182 states have call successors, (4182), 2551 states have call predecessors, (4182), 2958 states have return successors, (8271), 4089 states have call predecessors, (8271), 4179 states have call successors, (8271) [2024-11-22 02:18:06,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47310 states to 47310 states and 63809 transitions. [2024-11-22 02:18:06,710 INFO L78 Accepts]: Start accepts. Automaton has 47310 states and 63809 transitions. Word has length 87 [2024-11-22 02:18:06,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:18:06,710 INFO L471 AbstractCegarLoop]: Abstraction has 47310 states and 63809 transitions. [2024-11-22 02:18:06,710 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-22 02:18:06,711 INFO L276 IsEmpty]: Start isEmpty. Operand 47310 states and 63809 transitions. [2024-11-22 02:18:06,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-22 02:18:06,715 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:18:06,715 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:18:06,716 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-22 02:18:06,716 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:18:06,716 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:18:06,716 INFO L85 PathProgramCache]: Analyzing trace with hash -585804370, now seen corresponding path program 1 times [2024-11-22 02:18:06,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:18:06,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675233747] [2024-11-22 02:18:06,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:18:06,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:18:06,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:18:06,810 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 02:18:06,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:18:06,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675233747] [2024-11-22 02:18:06,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675233747] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:18:06,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:18:06,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 02:18:06,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907736556] [2024-11-22 02:18:06,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:18:06,812 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 02:18:06,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:18:06,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 02:18:06,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-22 02:18:06,813 INFO L87 Difference]: Start difference. First operand 47310 states and 63809 transitions. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 4 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-22 02:18:09,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:18:09,376 INFO L93 Difference]: Finished difference Result 95413 states and 128526 transitions. [2024-11-22 02:18:09,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 02:18:09,377 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 4 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 95 [2024-11-22 02:18:09,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:18:09,556 INFO L225 Difference]: With dead ends: 95413 [2024-11-22 02:18:09,556 INFO L226 Difference]: Without dead ends: 48119 [2024-11-22 02:18:09,639 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-22 02:18:09,639 INFO L432 NwaCegarLoop]: 354 mSDtfsCounter, 1121 mSDsluCounter, 783 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 248 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1121 SdHoareTripleChecker+Valid, 1137 SdHoareTripleChecker+Invalid, 470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 248 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-22 02:18:09,640 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1121 Valid, 1137 Invalid, 470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [248 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-22 02:18:09,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48119 states. [2024-11-22 02:18:12,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48119 to 47310. [2024-11-22 02:18:12,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47310 states, 40169 states have (on average 1.2668475690208867) internal successors, (50888), 40671 states have internal predecessors, (50888), 4182 states have call successors, (4182), 2551 states have call predecessors, (4182), 2958 states have return successors, (7569), 4089 states have call predecessors, (7569), 4179 states have call successors, (7569) [2024-11-22 02:18:12,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47310 states to 47310 states and 62639 transitions. [2024-11-22 02:18:12,506 INFO L78 Accepts]: Start accepts. Automaton has 47310 states and 62639 transitions. Word has length 95 [2024-11-22 02:18:12,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:18:12,506 INFO L471 AbstractCegarLoop]: Abstraction has 47310 states and 62639 transitions. [2024-11-22 02:18:12,507 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 4 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-22 02:18:12,507 INFO L276 IsEmpty]: Start isEmpty. Operand 47310 states and 62639 transitions. [2024-11-22 02:18:12,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-22 02:18:12,512 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:18:12,513 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:18:12,513 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-22 02:18:12,513 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:18:12,513 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:18:12,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1094142346, now seen corresponding path program 1 times [2024-11-22 02:18:12,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:18:12,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001532619] [2024-11-22 02:18:12,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:18:12,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:18:12,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:18:12,591 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-22 02:18:12,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:18:12,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001532619] [2024-11-22 02:18:12,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001532619] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:18:12,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:18:12,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 02:18:12,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341647018] [2024-11-22 02:18:12,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:18:12,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 02:18:12,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:18:12,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 02:18:12,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 02:18:12,593 INFO L87 Difference]: Start difference. First operand 47310 states and 62639 transitions. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-22 02:18:15,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:18:15,193 INFO L93 Difference]: Finished difference Result 103350 states and 137103 transitions. [2024-11-22 02:18:15,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 02:18:15,194 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 96 [2024-11-22 02:18:15,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:18:15,600 INFO L225 Difference]: With dead ends: 103350 [2024-11-22 02:18:15,600 INFO L226 Difference]: Without dead ends: 59372 [2024-11-22 02:18:15,664 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-22 02:18:15,665 INFO L432 NwaCegarLoop]: 187 mSDtfsCounter, 142 mSDsluCounter, 668 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 855 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:18:15,665 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 855 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:18:15,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59372 states. [2024-11-22 02:18:18,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59372 to 58545. [2024-11-22 02:18:18,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58545 states, 49682 states have (on average 1.265508634918079) internal successors, (62873), 50380 states have internal predecessors, (62873), 5176 states have call successors, (5176), 3181 states have call predecessors, (5176), 3686 states have return successors, (9329), 4985 states have call predecessors, (9329), 5173 states have call successors, (9329) [2024-11-22 02:18:18,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58545 states to 58545 states and 77378 transitions. [2024-11-22 02:18:18,714 INFO L78 Accepts]: Start accepts. Automaton has 58545 states and 77378 transitions. Word has length 96 [2024-11-22 02:18:18,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:18:18,715 INFO L471 AbstractCegarLoop]: Abstraction has 58545 states and 77378 transitions. [2024-11-22 02:18:18,716 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-22 02:18:18,716 INFO L276 IsEmpty]: Start isEmpty. Operand 58545 states and 77378 transitions. [2024-11-22 02:18:18,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-22 02:18:18,728 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:18:18,728 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-22 02:18:18,728 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-22 02:18:18,729 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:18:18,729 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:18:18,729 INFO L85 PathProgramCache]: Analyzing trace with hash -2018622111, now seen corresponding path program 1 times [2024-11-22 02:18:18,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:18:18,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019895969] [2024-11-22 02:18:18,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:18:18,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:18:18,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:18:18,768 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-22 02:18:18,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:18:18,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019895969] [2024-11-22 02:18:18,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019895969] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:18:18,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:18:18,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 02:18:18,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005215695] [2024-11-22 02:18:18,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:18:18,770 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 02:18:18,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:18:18,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 02:18:18,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 02:18:18,771 INFO L87 Difference]: Start difference. First operand 58545 states and 77378 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-22 02:18:21,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:18:21,789 INFO L93 Difference]: Finished difference Result 115301 states and 151870 transitions. [2024-11-22 02:18:21,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 02:18:21,790 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 97 [2024-11-22 02:18:21,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:18:22,014 INFO L225 Difference]: With dead ends: 115301 [2024-11-22 02:18:22,015 INFO L226 Difference]: Without dead ends: 59388 [2024-11-22 02:18:22,108 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 02:18:22,109 INFO L432 NwaCegarLoop]: 160 mSDtfsCounter, 169 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:18:22,109 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 374 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:18:22,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59388 states. [2024-11-22 02:18:24,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59388 to 54176. [2024-11-22 02:18:24,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54176 states, 45742 states have (on average 1.2626907437366097) internal successors, (57758), 46794 states have internal predecessors, (57758), 4681 states have call successors, (4681), 2876 states have call predecessors, (4681), 3752 states have return successors, (8487), 4507 states have call predecessors, (8487), 4678 states have call successors, (8487) [2024-11-22 02:18:25,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54176 states to 54176 states and 70926 transitions. [2024-11-22 02:18:25,139 INFO L78 Accepts]: Start accepts. Automaton has 54176 states and 70926 transitions. Word has length 97 [2024-11-22 02:18:25,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:18:25,140 INFO L471 AbstractCegarLoop]: Abstraction has 54176 states and 70926 transitions. [2024-11-22 02:18:25,140 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-22 02:18:25,140 INFO L276 IsEmpty]: Start isEmpty. Operand 54176 states and 70926 transitions. [2024-11-22 02:18:25,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-22 02:18:25,145 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:18:25,145 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-22 02:18:25,145 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-22 02:18:25,145 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:18:25,146 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:18:25,146 INFO L85 PathProgramCache]: Analyzing trace with hash 1281651487, now seen corresponding path program 1 times [2024-11-22 02:18:25,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:18:25,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769506474] [2024-11-22 02:18:25,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:18:25,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:18:25,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:18:25,166 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-22 02:18:25,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:18:25,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769506474] [2024-11-22 02:18:25,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769506474] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:18:25,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:18:25,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 02:18:25,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588703861] [2024-11-22 02:18:25,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:18:25,167 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 02:18:25,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:18:25,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 02:18:25,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 02:18:25,168 INFO L87 Difference]: Start difference. First operand 54176 states and 70926 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-22 02:18:27,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:18:27,138 INFO L93 Difference]: Finished difference Result 55998 states and 73156 transitions. [2024-11-22 02:18:27,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 02:18:27,138 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 97 [2024-11-22 02:18:27,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:18:27,344 INFO L225 Difference]: With dead ends: 55998 [2024-11-22 02:18:27,344 INFO L226 Difference]: Without dead ends: 54172 [2024-11-22 02:18:27,376 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 02:18:27,377 INFO L432 NwaCegarLoop]: 176 mSDtfsCounter, 170 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 02:18:27,378 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 176 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 02:18:27,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54172 states.