./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 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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-3061b6d-m [2024-11-18 14:32:53,075 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 14:32:53,145 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 14:32:53,151 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 14:32:53,154 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 14:32:53,182 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 14:32:53,184 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 14:32:53,184 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 14:32:53,185 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 14:32:53,186 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 14:32:53,187 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 14:32:53,187 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 14:32:53,188 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 14:32:53,190 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 14:32:53,190 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 14:32:53,190 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 14:32:53,191 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 14:32:53,191 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 14:32:53,191 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 14:32:53,192 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 14:32:53,192 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 14:32:53,196 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 14:32:53,196 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 14:32:53,196 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 14:32:53,197 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 14:32:53,197 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 14:32:53,197 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 14:32:53,197 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 14:32:53,198 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 14:32:53,198 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 14:32:53,198 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 14:32:53,198 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 14:32:53,199 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 14:32:53,199 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 14:32:53,199 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 14:32:53,200 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 14:32:53,200 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 14:32:53,200 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 14:32:53,200 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 14:32:53,201 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 14:32:53,201 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 14:32:53,202 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 14:32:53,203 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 87760fc84dfa44e1b5109b35af0fae7e5f68f814afbb1ba90e7b46e4e9e3b4bf [2024-11-18 14:32:53,469 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 14:32:53,494 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 14:32:53,497 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 14:32:53,499 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 14:32:53,499 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 14:32:53,500 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/systemc/kundu2.cil.c [2024-11-18 14:32:54,989 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 14:32:55,206 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 14:32:55,206 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/kundu2.cil.c [2024-11-18 14:32:55,217 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03e18c624/8402e270118f4763a24e14f9c01fb81e/FLAG3a91bc0c8 [2024-11-18 14:32:55,230 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03e18c624/8402e270118f4763a24e14f9c01fb81e [2024-11-18 14:32:55,233 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 14:32:55,235 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 14:32:55,236 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 14:32:55,236 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 14:32:55,244 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 14:32:55,245 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 02:32:55" (1/1) ... [2024-11-18 14:32:55,248 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59f0bed9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:32:55, skipping insertion in model container [2024-11-18 14:32:55,248 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 02:32:55" (1/1) ... [2024-11-18 14:32:55,288 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 14:32:55,507 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] [2024-11-18 14:32:55,596 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 14:32:55,607 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 14:32:55,616 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] [2024-11-18 14:32:55,648 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 14:32:55,671 INFO L204 MainTranslator]: Completed translation [2024-11-18 14:32:55,671 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:32:55 WrapperNode [2024-11-18 14:32:55,672 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 14:32:55,673 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 14:32:55,673 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 14:32:55,673 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 14:32:55,680 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:32:55" (1/1) ... [2024-11-18 14:32:55,687 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:32:55" (1/1) ... [2024-11-18 14:32:55,720 INFO L138 Inliner]: procedures = 34, calls = 40, calls flagged for inlining = 17, calls inlined = 17, statements flattened = 312 [2024-11-18 14:32:55,721 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 14:32:55,722 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 14:32:55,722 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 14:32:55,722 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 14:32:55,730 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:32:55" (1/1) ... [2024-11-18 14:32:55,731 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:32:55" (1/1) ... [2024-11-18 14:32:55,734 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:32:55" (1/1) ... [2024-11-18 14:32:55,756 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]. [2024-11-18 14:32:55,756 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:32:55" (1/1) ... [2024-11-18 14:32:55,757 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:32:55" (1/1) ... [2024-11-18 14:32:55,763 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:32:55" (1/1) ... [2024-11-18 14:32:55,769 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:32:55" (1/1) ... [2024-11-18 14:32:55,771 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:32:55" (1/1) ... [2024-11-18 14:32:55,773 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:32:55" (1/1) ... [2024-11-18 14:32:55,780 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 14:32:55,781 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 14:32:55,781 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 14:32:55,781 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 14:32:55,782 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:32:55" (1/1) ... [2024-11-18 14:32:55,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 14:32:55,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:32:55,821 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) [2024-11-18 14:32:55,824 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 [2024-11-18 14:32:55,886 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 14:32:55,890 INFO L130 BoogieDeclarations]: Found specification of procedure write_data [2024-11-18 14:32:55,890 INFO L138 BoogieDeclarations]: Found implementation of procedure write_data [2024-11-18 14:32:55,891 INFO L130 BoogieDeclarations]: Found specification of procedure error [2024-11-18 14:32:55,891 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2024-11-18 14:32:55,891 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2024-11-18 14:32:55,891 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2024-11-18 14:32:55,891 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2024-11-18 14:32:55,891 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2024-11-18 14:32:55,891 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2024-11-18 14:32:55,892 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2024-11-18 14:32:55,892 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2024-11-18 14:32:55,892 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2024-11-18 14:32:55,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 14:32:55,896 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2024-11-18 14:32:55,896 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2024-11-18 14:32:55,896 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 14:32:55,897 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 14:32:56,066 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 14:32:56,069 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 14:32:56,492 INFO L? ?]: Removed 51 outVars from TransFormulas that were not future-live. [2024-11-18 14:32:56,492 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 14:32:56,512 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 14:32:56,514 INFO L316 CfgBuilder]: Removed 5 assume(true) statements. [2024-11-18 14:32:56,515 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:32:56 BoogieIcfgContainer [2024-11-18 14:32:56,515 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 14:32:56,518 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 14:32:56,518 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 14:32:56,521 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 14:32:56,522 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 02:32:55" (1/3) ... [2024-11-18 14:32:56,523 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@205b8d52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 02:32:56, skipping insertion in model container [2024-11-18 14:32:56,523 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:32:55" (2/3) ... [2024-11-18 14:32:56,523 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@205b8d52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 02:32:56, skipping insertion in model container [2024-11-18 14:32:56,523 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:32:56" (3/3) ... [2024-11-18 14:32:56,524 INFO L112 eAbstractionObserver]: Analyzing ICFG kundu2.cil.c [2024-11-18 14:32:56,539 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 14:32:56,539 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 14:32:56,601 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 14:32:56,608 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;@501f4e78, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 14:32:56,609 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 14:32:56,613 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) [2024-11-18 14:32:56,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-18 14:32:56,623 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:32:56,623 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] [2024-11-18 14:32:56,624 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:32:56,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:32:56,629 INFO L85 PathProgramCache]: Analyzing trace with hash 734266899, now seen corresponding path program 1 times [2024-11-18 14:32:56,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:32:56,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031886862] [2024-11-18 14:32:56,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:32:56,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:32:56,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:32:56,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:32:56,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:32:56,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031886862] [2024-11-18 14:32:56,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031886862] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:32:56,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:32:56,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 14:32:56,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101800038] [2024-11-18 14:32:56,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:32:56,953 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:32:56,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:32:56,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:32:56,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:32:56,979 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) [2024-11-18 14:32:57,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:32:57,039 INFO L93 Difference]: Finished difference Result 259 states and 388 transitions. [2024-11-18 14:32:57,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:32:57,044 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 [2024-11-18 14:32:57,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:32:57,053 INFO L225 Difference]: With dead ends: 259 [2024-11-18 14:32:57,053 INFO L226 Difference]: Without dead ends: 127 [2024-11-18 14:32:57,056 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 [2024-11-18 14:32:57,060 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 [2024-11-18 14:32:57,061 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] [2024-11-18 14:32:57,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2024-11-18 14:32:57,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2024-11-18 14:32:57,108 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) [2024-11-18 14:32:57,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 180 transitions. [2024-11-18 14:32:57,114 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 180 transitions. Word has length 59 [2024-11-18 14:32:57,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:32:57,116 INFO L471 AbstractCegarLoop]: Abstraction has 127 states and 180 transitions. [2024-11-18 14:32:57,117 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) [2024-11-18 14:32:57,117 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 180 transitions. [2024-11-18 14:32:57,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-18 14:32:57,120 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:32:57,120 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] [2024-11-18 14:32:57,120 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 14:32:57,121 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:32:57,122 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:32:57,123 INFO L85 PathProgramCache]: Analyzing trace with hash -804073131, now seen corresponding path program 1 times [2024-11-18 14:32:57,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:32:57,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743999284] [2024-11-18 14:32:57,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:32:57,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:32:57,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:32:57,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:32:57,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:32:57,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743999284] [2024-11-18 14:32:57,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743999284] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:32:57,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:32:57,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:32:57,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4883282] [2024-11-18 14:32:57,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:32:57,312 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:32:57,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:32:57,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:32:57,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:32:57,314 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) [2024-11-18 14:32:57,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:32:57,602 INFO L93 Difference]: Finished difference Result 356 states and 509 transitions. [2024-11-18 14:32:57,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 14:32:57,603 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 [2024-11-18 14:32:57,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:32:57,607 INFO L225 Difference]: With dead ends: 356 [2024-11-18 14:32:57,609 INFO L226 Difference]: Without dead ends: 240 [2024-11-18 14:32:57,610 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 [2024-11-18 14:32:57,611 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, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 14:32:57,612 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [303 Valid, 594 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 14:32:57,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2024-11-18 14:32:57,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 234. [2024-11-18 14:32:57,647 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) [2024-11-18 14:32:57,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 328 transitions. [2024-11-18 14:32:57,649 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 328 transitions. Word has length 59 [2024-11-18 14:32:57,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:32:57,650 INFO L471 AbstractCegarLoop]: Abstraction has 234 states and 328 transitions. [2024-11-18 14:32:57,650 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) [2024-11-18 14:32:57,654 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 328 transitions. [2024-11-18 14:32:57,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-18 14:32:57,656 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:32:57,656 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] [2024-11-18 14:32:57,656 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 14:32:57,658 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:32:57,659 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:32:57,659 INFO L85 PathProgramCache]: Analyzing trace with hash 1094457174, now seen corresponding path program 1 times [2024-11-18 14:32:57,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:32:57,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547370643] [2024-11-18 14:32:57,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:32:57,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:32:57,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:32:57,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:32:57,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:32:57,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547370643] [2024-11-18 14:32:57,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547370643] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:32:57,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:32:57,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 14:32:57,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110931865] [2024-11-18 14:32:57,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:32:57,811 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:32:57,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:32:57,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:32:57,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:32:57,815 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) [2024-11-18 14:32:57,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:32:57,865 INFO L93 Difference]: Finished difference Result 460 states and 651 transitions. [2024-11-18 14:32:57,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:32:57,866 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 [2024-11-18 14:32:57,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:32:57,871 INFO L225 Difference]: With dead ends: 460 [2024-11-18 14:32:57,871 INFO L226 Difference]: Without dead ends: 237 [2024-11-18 14:32:57,872 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 [2024-11-18 14:32:57,874 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 [2024-11-18 14:32:57,875 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] [2024-11-18 14:32:57,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2024-11-18 14:32:57,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 237. [2024-11-18 14:32:57,907 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) [2024-11-18 14:32:57,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 330 transitions. [2024-11-18 14:32:57,910 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 330 transitions. Word has length 59 [2024-11-18 14:32:57,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:32:57,910 INFO L471 AbstractCegarLoop]: Abstraction has 237 states and 330 transitions. [2024-11-18 14:32:57,910 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) [2024-11-18 14:32:57,910 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 330 transitions. [2024-11-18 14:32:57,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-18 14:32:57,914 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:32:57,914 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] [2024-11-18 14:32:57,914 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 14:32:57,915 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:32:57,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:32:57,915 INFO L85 PathProgramCache]: Analyzing trace with hash -750909992, now seen corresponding path program 1 times [2024-11-18 14:32:57,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:32:57,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710283542] [2024-11-18 14:32:57,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:32:57,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:32:57,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:32:58,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:32:58,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:32:58,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710283542] [2024-11-18 14:32:58,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710283542] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:32:58,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:32:58,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 14:32:58,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684214192] [2024-11-18 14:32:58,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:32:58,007 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:32:58,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:32:58,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:32:58,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:32:58,008 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) [2024-11-18 14:32:58,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:32:58,051 INFO L93 Difference]: Finished difference Result 469 states and 659 transitions. [2024-11-18 14:32:58,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:32:58,052 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 [2024-11-18 14:32:58,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:32:58,054 INFO L225 Difference]: With dead ends: 469 [2024-11-18 14:32:58,054 INFO L226 Difference]: Without dead ends: 243 [2024-11-18 14:32:58,059 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 [2024-11-18 14:32:58,060 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 [2024-11-18 14:32:58,060 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] [2024-11-18 14:32:58,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2024-11-18 14:32:58,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2024-11-18 14:32:58,090 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) [2024-11-18 14:32:58,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 336 transitions. [2024-11-18 14:32:58,093 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 336 transitions. Word has length 59 [2024-11-18 14:32:58,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:32:58,094 INFO L471 AbstractCegarLoop]: Abstraction has 243 states and 336 transitions. [2024-11-18 14:32:58,094 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) [2024-11-18 14:32:58,095 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 336 transitions. [2024-11-18 14:32:58,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-18 14:32:58,099 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:32:58,099 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] [2024-11-18 14:32:58,099 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 14:32:58,100 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:32:58,100 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:32:58,100 INFO L85 PathProgramCache]: Analyzing trace with hash -823296550, now seen corresponding path program 1 times [2024-11-18 14:32:58,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:32:58,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625644528] [2024-11-18 14:32:58,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:32:58,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:32:58,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:32:58,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:32:58,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:32:58,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625644528] [2024-11-18 14:32:58,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625644528] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:32:58,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:32:58,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 14:32:58,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821847996] [2024-11-18 14:32:58,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:32:58,222 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:32:58,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:32:58,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:32:58,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:32:58,225 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) [2024-11-18 14:32:58,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:32:58,633 INFO L93 Difference]: Finished difference Result 981 states and 1359 transitions. [2024-11-18 14:32:58,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 14:32:58,633 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 [2024-11-18 14:32:58,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:32:58,638 INFO L225 Difference]: With dead ends: 981 [2024-11-18 14:32:58,638 INFO L226 Difference]: Without dead ends: 719 [2024-11-18 14:32:58,639 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 [2024-11-18 14:32:58,640 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, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 14:32:58,641 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [692 Valid, 859 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 14:32:58,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 719 states. [2024-11-18 14:32:58,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 719 to 563. [2024-11-18 14:32:58,716 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) [2024-11-18 14:32:58,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 782 transitions. [2024-11-18 14:32:58,747 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 782 transitions. Word has length 59 [2024-11-18 14:32:58,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:32:58,747 INFO L471 AbstractCegarLoop]: Abstraction has 563 states and 782 transitions. [2024-11-18 14:32:58,747 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) [2024-11-18 14:32:58,747 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 782 transitions. [2024-11-18 14:32:58,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-18 14:32:58,748 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:32:58,748 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] [2024-11-18 14:32:58,749 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 14:32:58,749 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:32:58,753 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:32:58,757 INFO L85 PathProgramCache]: Analyzing trace with hash 225843183, now seen corresponding path program 1 times [2024-11-18 14:32:58,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:32:58,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925928774] [2024-11-18 14:32:58,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:32:58,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:32:58,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:32:58,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:32:58,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:32:58,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925928774] [2024-11-18 14:32:58,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925928774] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:32:58,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:32:58,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 14:32:58,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818119091] [2024-11-18 14:32:58,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:32:58,834 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:32:58,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:32:58,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:32:58,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:32:58,835 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) [2024-11-18 14:32:58,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:32:58,883 INFO L93 Difference]: Finished difference Result 1130 states and 1584 transitions. [2024-11-18 14:32:58,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:32:58,884 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 [2024-11-18 14:32:58,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:32:58,887 INFO L225 Difference]: With dead ends: 1130 [2024-11-18 14:32:58,887 INFO L226 Difference]: Without dead ends: 578 [2024-11-18 14:32:58,889 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 [2024-11-18 14:32:58,890 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 [2024-11-18 14:32:58,890 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] [2024-11-18 14:32:58,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2024-11-18 14:32:58,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 578. [2024-11-18 14:32:58,918 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) [2024-11-18 14:32:58,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 797 transitions. [2024-11-18 14:32:58,922 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 797 transitions. Word has length 60 [2024-11-18 14:32:58,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:32:58,923 INFO L471 AbstractCegarLoop]: Abstraction has 578 states and 797 transitions. [2024-11-18 14:32:58,923 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) [2024-11-18 14:32:58,923 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 797 transitions. [2024-11-18 14:32:58,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-18 14:32:58,926 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:32:58,926 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] [2024-11-18 14:32:58,926 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 14:32:58,926 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:32:58,927 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:32:58,927 INFO L85 PathProgramCache]: Analyzing trace with hash -2145896079, now seen corresponding path program 1 times [2024-11-18 14:32:58,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:32:58,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449984771] [2024-11-18 14:32:58,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:32:58,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:32:58,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:32:59,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:32:59,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:32:59,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449984771] [2024-11-18 14:32:59,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449984771] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:32:59,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:32:59,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 14:32:59,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304444141] [2024-11-18 14:32:59,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:32:59,018 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:32:59,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:32:59,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:32:59,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:32:59,019 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) [2024-11-18 14:32:59,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:32:59,139 INFO L93 Difference]: Finished difference Result 1490 states and 2055 transitions. [2024-11-18 14:32:59,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:32:59,140 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 [2024-11-18 14:32:59,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:32:59,147 INFO L225 Difference]: With dead ends: 1490 [2024-11-18 14:32:59,148 INFO L226 Difference]: Without dead ends: 924 [2024-11-18 14:32:59,150 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 [2024-11-18 14:32:59,152 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, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:32:59,154 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 697 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:32:59,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 924 states. [2024-11-18 14:32:59,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 924 to 915. [2024-11-18 14:32:59,207 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) [2024-11-18 14:32:59,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 915 states to 915 states and 1253 transitions. [2024-11-18 14:32:59,212 INFO L78 Accepts]: Start accepts. Automaton has 915 states and 1253 transitions. Word has length 60 [2024-11-18 14:32:59,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:32:59,213 INFO L471 AbstractCegarLoop]: Abstraction has 915 states and 1253 transitions. [2024-11-18 14:32:59,213 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) [2024-11-18 14:32:59,214 INFO L276 IsEmpty]: Start isEmpty. Operand 915 states and 1253 transitions. [2024-11-18 14:32:59,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-18 14:32:59,215 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:32:59,215 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] [2024-11-18 14:32:59,215 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 14:32:59,215 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:32:59,216 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:32:59,216 INFO L85 PathProgramCache]: Analyzing trace with hash 370475399, now seen corresponding path program 1 times [2024-11-18 14:32:59,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:32:59,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796583460] [2024-11-18 14:32:59,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:32:59,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:32:59,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:32:59,331 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:32:59,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:32:59,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796583460] [2024-11-18 14:32:59,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796583460] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:32:59,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:32:59,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 14:32:59,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462008824] [2024-11-18 14:32:59,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:32:59,334 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 14:32:59,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:32:59,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 14:32:59,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:32:59,335 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) [2024-11-18 14:32:59,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:32:59,587 INFO L93 Difference]: Finished difference Result 2532 states and 3486 transitions. [2024-11-18 14:32:59,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 14:32:59,588 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 [2024-11-18 14:32:59,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:32:59,597 INFO L225 Difference]: With dead ends: 2532 [2024-11-18 14:32:59,597 INFO L226 Difference]: Without dead ends: 1727 [2024-11-18 14:32:59,601 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 [2024-11-18 14:32:59,601 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, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 14:32:59,602 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [285 Valid, 1241 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 14:32:59,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1727 states. [2024-11-18 14:32:59,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1727 to 1709. [2024-11-18 14:32:59,682 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) [2024-11-18 14:32:59,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1709 states to 1709 states and 2333 transitions. [2024-11-18 14:32:59,692 INFO L78 Accepts]: Start accepts. Automaton has 1709 states and 2333 transitions. Word has length 71 [2024-11-18 14:32:59,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:32:59,692 INFO L471 AbstractCegarLoop]: Abstraction has 1709 states and 2333 transitions. [2024-11-18 14:32:59,693 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) [2024-11-18 14:32:59,693 INFO L276 IsEmpty]: Start isEmpty. Operand 1709 states and 2333 transitions. [2024-11-18 14:32:59,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-18 14:32:59,694 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:32:59,694 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] [2024-11-18 14:32:59,694 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 14:32:59,694 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:32:59,695 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:32:59,695 INFO L85 PathProgramCache]: Analyzing trace with hash -153594449, now seen corresponding path program 1 times [2024-11-18 14:32:59,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:32:59,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154981533] [2024-11-18 14:32:59,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:32:59,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:32:59,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:32:59,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:32:59,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:32:59,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154981533] [2024-11-18 14:32:59,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154981533] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:32:59,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:32:59,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:32:59,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347781727] [2024-11-18 14:32:59,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:32:59,780 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:32:59,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:32:59,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:32:59,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:32:59,781 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) [2024-11-18 14:33:00,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:33:00,083 INFO L93 Difference]: Finished difference Result 5096 states and 7018 transitions. [2024-11-18 14:33:00,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:33:00,084 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 [2024-11-18 14:33:00,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:33:00,104 INFO L225 Difference]: With dead ends: 5096 [2024-11-18 14:33:00,105 INFO L226 Difference]: Without dead ends: 3399 [2024-11-18 14:33:00,112 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 [2024-11-18 14:33:00,114 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, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 14:33:00,114 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 502 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 14:33:00,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3399 states. [2024-11-18 14:33:00,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3399 to 3343. [2024-11-18 14:33:00,301 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) [2024-11-18 14:33:00,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3343 states to 3343 states and 4555 transitions. [2024-11-18 14:33:00,318 INFO L78 Accepts]: Start accepts. Automaton has 3343 states and 4555 transitions. Word has length 73 [2024-11-18 14:33:00,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:33:00,319 INFO L471 AbstractCegarLoop]: Abstraction has 3343 states and 4555 transitions. [2024-11-18 14:33:00,320 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) [2024-11-18 14:33:00,320 INFO L276 IsEmpty]: Start isEmpty. Operand 3343 states and 4555 transitions. [2024-11-18 14:33:00,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-18 14:33:00,321 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:33:00,321 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] [2024-11-18 14:33:00,322 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-18 14:33:00,322 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:33:00,322 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:33:00,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1839774287, now seen corresponding path program 1 times [2024-11-18 14:33:00,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:33:00,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249467600] [2024-11-18 14:33:00,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:33:00,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:33:00,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:33:00,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:33:00,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:33:00,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249467600] [2024-11-18 14:33:00,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249467600] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:33:00,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:33:00,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 14:33:00,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799027493] [2024-11-18 14:33:00,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:33:00,351 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:33:00,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:33:00,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:33:00,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:33:00,352 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) [2024-11-18 14:33:00,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:33:00,503 INFO L93 Difference]: Finished difference Result 6670 states and 9084 transitions. [2024-11-18 14:33:00,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:33:00,504 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 [2024-11-18 14:33:00,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:33:00,522 INFO L225 Difference]: With dead ends: 6670 [2024-11-18 14:33:00,522 INFO L226 Difference]: Without dead ends: 3338 [2024-11-18 14:33:00,531 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 [2024-11-18 14:33:00,531 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 [2024-11-18 14:33:00,533 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] [2024-11-18 14:33:00,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3338 states. [2024-11-18 14:33:00,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3338 to 3338. [2024-11-18 14:33:00,674 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) [2024-11-18 14:33:00,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3338 states to 3338 states and 4544 transitions. [2024-11-18 14:33:00,690 INFO L78 Accepts]: Start accepts. Automaton has 3338 states and 4544 transitions. Word has length 73 [2024-11-18 14:33:00,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:33:00,690 INFO L471 AbstractCegarLoop]: Abstraction has 3338 states and 4544 transitions. [2024-11-18 14:33:00,691 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) [2024-11-18 14:33:00,691 INFO L276 IsEmpty]: Start isEmpty. Operand 3338 states and 4544 transitions. [2024-11-18 14:33:00,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-18 14:33:00,692 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:33:00,692 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] [2024-11-18 14:33:00,692 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-18 14:33:00,692 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:33:00,693 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:33:00,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1321482580, now seen corresponding path program 1 times [2024-11-18 14:33:00,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:33:00,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925218292] [2024-11-18 14:33:00,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:33:00,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:33:00,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:33:00,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:33:00,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:33:00,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925218292] [2024-11-18 14:33:00,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925218292] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:33:00,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:33:00,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 14:33:00,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112277143] [2024-11-18 14:33:00,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:33:00,735 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:33:00,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:33:00,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:33:00,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:33:00,736 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) [2024-11-18 14:33:00,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:33:00,934 INFO L93 Difference]: Finished difference Result 7663 states and 10439 transitions. [2024-11-18 14:33:00,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:33:00,935 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 [2024-11-18 14:33:00,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:33:00,964 INFO L225 Difference]: With dead ends: 7663 [2024-11-18 14:33:00,964 INFO L226 Difference]: Without dead ends: 4336 [2024-11-18 14:33:00,976 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 [2024-11-18 14:33:00,977 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 [2024-11-18 14:33:00,977 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] [2024-11-18 14:33:00,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4336 states. [2024-11-18 14:33:01,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4336 to 3674. [2024-11-18 14:33:01,173 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) [2024-11-18 14:33:01,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3674 states to 3674 states and 4853 transitions. [2024-11-18 14:33:01,189 INFO L78 Accepts]: Start accepts. Automaton has 3674 states and 4853 transitions. Word has length 74 [2024-11-18 14:33:01,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:33:01,189 INFO L471 AbstractCegarLoop]: Abstraction has 3674 states and 4853 transitions. [2024-11-18 14:33:01,190 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) [2024-11-18 14:33:01,190 INFO L276 IsEmpty]: Start isEmpty. Operand 3674 states and 4853 transitions. [2024-11-18 14:33:01,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-18 14:33:01,191 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:33:01,191 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] [2024-11-18 14:33:01,191 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-18 14:33:01,191 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:33:01,192 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:33:01,192 INFO L85 PathProgramCache]: Analyzing trace with hash -728024876, now seen corresponding path program 1 times [2024-11-18 14:33:01,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:33:01,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315425074] [2024-11-18 14:33:01,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:33:01,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:33:01,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:33:01,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:33:01,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:33:01,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315425074] [2024-11-18 14:33:01,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315425074] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:33:01,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:33:01,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 14:33:01,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367101660] [2024-11-18 14:33:01,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:33:01,319 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:33:01,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:33:01,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:33:01,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:33:01,320 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) [2024-11-18 14:33:01,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:33:01,688 INFO L93 Difference]: Finished difference Result 6976 states and 9221 transitions. [2024-11-18 14:33:01,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:33:01,688 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 [2024-11-18 14:33:01,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:33:01,710 INFO L225 Difference]: With dead ends: 6976 [2024-11-18 14:33:01,710 INFO L226 Difference]: Without dead ends: 3685 [2024-11-18 14:33:01,720 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 [2024-11-18 14:33:01,721 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 [2024-11-18 14:33:01,721 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] [2024-11-18 14:33:01,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3685 states. [2024-11-18 14:33:01,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3685 to 3670. [2024-11-18 14:33:01,910 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) [2024-11-18 14:33:01,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3670 states to 3670 states and 4841 transitions. [2024-11-18 14:33:01,927 INFO L78 Accepts]: Start accepts. Automaton has 3670 states and 4841 transitions. Word has length 75 [2024-11-18 14:33:01,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:33:01,927 INFO L471 AbstractCegarLoop]: Abstraction has 3670 states and 4841 transitions. [2024-11-18 14:33:01,928 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) [2024-11-18 14:33:01,928 INFO L276 IsEmpty]: Start isEmpty. Operand 3670 states and 4841 transitions. [2024-11-18 14:33:01,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-18 14:33:01,929 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:33:01,930 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] [2024-11-18 14:33:01,930 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-18 14:33:01,930 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:33:01,931 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:33:01,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1139883952, now seen corresponding path program 1 times [2024-11-18 14:33:01,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:33:01,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750270364] [2024-11-18 14:33:01,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:33:01,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:33:01,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:33:01,989 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-18 14:33:01,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:33:01,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750270364] [2024-11-18 14:33:01,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750270364] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:33:01,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:33:01,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:33:01,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835173364] [2024-11-18 14:33:01,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:33:01,991 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:33:01,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:33:01,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:33:01,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:33:01,992 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) [2024-11-18 14:33:02,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:33:02,467 INFO L93 Difference]: Finished difference Result 11139 states and 14874 transitions. [2024-11-18 14:33:02,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:33:02,468 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 [2024-11-18 14:33:02,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:33:02,511 INFO L225 Difference]: With dead ends: 11139 [2024-11-18 14:33:02,511 INFO L226 Difference]: Without dead ends: 7481 [2024-11-18 14:33:02,525 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 [2024-11-18 14:33:02,526 INFO L432 NwaCegarLoop]: 154 mSDtfsCounter, 216 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:33:02,526 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 393 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:33:02,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7481 states. [2024-11-18 14:33:02,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7481 to 7471. [2024-11-18 14:33:02,958 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) [2024-11-18 14:33:02,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7471 states to 7471 states and 9807 transitions. [2024-11-18 14:33:02,995 INFO L78 Accepts]: Start accepts. Automaton has 7471 states and 9807 transitions. Word has length 79 [2024-11-18 14:33:02,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:33:02,996 INFO L471 AbstractCegarLoop]: Abstraction has 7471 states and 9807 transitions. [2024-11-18 14:33:02,996 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) [2024-11-18 14:33:02,997 INFO L276 IsEmpty]: Start isEmpty. Operand 7471 states and 9807 transitions. [2024-11-18 14:33:02,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-18 14:33:02,999 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:33:03,000 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] [2024-11-18 14:33:03,000 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-18 14:33:03,000 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:33:03,001 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:33:03,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1412022136, now seen corresponding path program 1 times [2024-11-18 14:33:03,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:33:03,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504276443] [2024-11-18 14:33:03,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:33:03,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:33:03,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:33:03,069 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-18 14:33:03,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:33:03,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504276443] [2024-11-18 14:33:03,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504276443] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:33:03,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:33:03,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 14:33:03,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632296096] [2024-11-18 14:33:03,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:33:03,072 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:33:03,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:33:03,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:33:03,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:33:03,073 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) [2024-11-18 14:33:04,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:33:04,125 INFO L93 Difference]: Finished difference Result 25093 states and 34149 transitions. [2024-11-18 14:33:04,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 14:33:04,126 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 [2024-11-18 14:33:04,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:33:04,212 INFO L225 Difference]: With dead ends: 25093 [2024-11-18 14:33:04,212 INFO L226 Difference]: Without dead ends: 17634 [2024-11-18 14:33:04,243 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 [2024-11-18 14:33:04,244 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 [2024-11-18 14:33:04,244 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] [2024-11-18 14:33:04,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17634 states. [2024-11-18 14:33:05,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17634 to 17359. [2024-11-18 14:33:05,373 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) [2024-11-18 14:33:05,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17359 states to 17359 states and 23181 transitions. [2024-11-18 14:33:05,527 INFO L78 Accepts]: Start accepts. Automaton has 17359 states and 23181 transitions. Word has length 81 [2024-11-18 14:33:05,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:33:05,529 INFO L471 AbstractCegarLoop]: Abstraction has 17359 states and 23181 transitions. [2024-11-18 14:33:05,530 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) [2024-11-18 14:33:05,530 INFO L276 IsEmpty]: Start isEmpty. Operand 17359 states and 23181 transitions. [2024-11-18 14:33:05,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-18 14:33:05,533 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:33:05,534 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] [2024-11-18 14:33:05,534 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-18 14:33:05,534 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:33:05,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:33:05,535 INFO L85 PathProgramCache]: Analyzing trace with hash 1579582129, now seen corresponding path program 1 times [2024-11-18 14:33:05,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:33:05,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168307392] [2024-11-18 14:33:05,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:33:05,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:33:05,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:33:05,615 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 14:33:05,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:33:05,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168307392] [2024-11-18 14:33:05,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168307392] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:33:05,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:33:05,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 14:33:05,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651720570] [2024-11-18 14:33:05,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:33:05,617 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:33:05,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:33:05,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:33:05,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:33:05,618 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) [2024-11-18 14:33:06,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:33:06,856 INFO L93 Difference]: Finished difference Result 42845 states and 57485 transitions. [2024-11-18 14:33:06,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:33:06,856 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 [2024-11-18 14:33:06,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:33:06,997 INFO L225 Difference]: With dead ends: 42845 [2024-11-18 14:33:06,997 INFO L226 Difference]: Without dead ends: 28093 [2024-11-18 14:33:07,052 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 [2024-11-18 14:33:07,053 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 [2024-11-18 14:33:07,053 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] [2024-11-18 14:33:07,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28093 states. [2024-11-18 14:33:08,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28093 to 27850. [2024-11-18 14:33:08,509 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) [2024-11-18 14:33:08,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27850 states to 27850 states and 37295 transitions. [2024-11-18 14:33:08,665 INFO L78 Accepts]: Start accepts. Automaton has 27850 states and 37295 transitions. Word has length 84 [2024-11-18 14:33:08,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:33:08,666 INFO L471 AbstractCegarLoop]: Abstraction has 27850 states and 37295 transitions. [2024-11-18 14:33:08,666 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) [2024-11-18 14:33:08,666 INFO L276 IsEmpty]: Start isEmpty. Operand 27850 states and 37295 transitions. [2024-11-18 14:33:08,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-18 14:33:08,671 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:33:08,671 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] [2024-11-18 14:33:08,672 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-18 14:33:08,672 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:33:08,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:33:08,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1643055201, now seen corresponding path program 1 times [2024-11-18 14:33:08,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:33:08,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695109970] [2024-11-18 14:33:08,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:33:08,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:33:08,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:33:08,808 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 14:33:08,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:33:08,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695109970] [2024-11-18 14:33:08,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695109970] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:33:08,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:33:08,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 14:33:08,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201519829] [2024-11-18 14:33:08,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:33:08,811 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 14:33:08,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:33:08,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 14:33:08,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:33:08,812 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) [2024-11-18 14:33:11,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:33:11,284 INFO L93 Difference]: Finished difference Result 74535 states and 100369 transitions. [2024-11-18 14:33:11,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 14:33:11,284 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 [2024-11-18 14:33:11,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:33:11,516 INFO L225 Difference]: With dead ends: 74535 [2024-11-18 14:33:11,516 INFO L226 Difference]: Without dead ends: 49292 [2024-11-18 14:33:11,584 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 [2024-11-18 14:33:11,585 INFO L432 NwaCegarLoop]: 453 mSDtfsCounter, 426 mSDsluCounter, 1206 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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 [2024-11-18 14:33:11,585 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] [2024-11-18 14:33:11,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49292 states. [2024-11-18 14:33:13,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49292 to 47310. [2024-11-18 14:33:13,926 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) [2024-11-18 14:33:14,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47310 states to 47310 states and 63809 transitions. [2024-11-18 14:33:14,220 INFO L78 Accepts]: Start accepts. Automaton has 47310 states and 63809 transitions. Word has length 87 [2024-11-18 14:33:14,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:33:14,221 INFO L471 AbstractCegarLoop]: Abstraction has 47310 states and 63809 transitions. [2024-11-18 14:33:14,221 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) [2024-11-18 14:33:14,222 INFO L276 IsEmpty]: Start isEmpty. Operand 47310 states and 63809 transitions. [2024-11-18 14:33:14,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-18 14:33:14,229 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:33:14,229 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] [2024-11-18 14:33:14,229 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-18 14:33:14,229 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:33:14,230 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:33:14,230 INFO L85 PathProgramCache]: Analyzing trace with hash -585804370, now seen corresponding path program 1 times [2024-11-18 14:33:14,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:33:14,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428473402] [2024-11-18 14:33:14,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:33:14,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:33:14,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:33:14,309 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-18 14:33:14,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:33:14,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428473402] [2024-11-18 14:33:14,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428473402] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:33:14,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:33:14,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 14:33:14,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731773611] [2024-11-18 14:33:14,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:33:14,311 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 14:33:14,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:33:14,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 14:33:14,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:33:14,312 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) [2024-11-18 14:33:16,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:33:16,660 INFO L93 Difference]: Finished difference Result 95413 states and 128526 transitions. [2024-11-18 14:33:16,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 14:33:16,660 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 [2024-11-18 14:33:16,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:33:17,164 INFO L225 Difference]: With dead ends: 95413 [2024-11-18 14:33:17,165 INFO L226 Difference]: Without dead ends: 48119 [2024-11-18 14:33:17,267 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 [2024-11-18 14:33:17,268 INFO L432 NwaCegarLoop]: 354 mSDtfsCounter, 1121 mSDsluCounter, 783 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 248 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 14:33:17,268 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1121 Valid, 1137 Invalid, 470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [248 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 14:33:17,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48119 states. [2024-11-18 14:33:19,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48119 to 47310. [2024-11-18 14:33:19,459 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) [2024-11-18 14:33:19,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47310 states to 47310 states and 62639 transitions. [2024-11-18 14:33:19,678 INFO L78 Accepts]: Start accepts. Automaton has 47310 states and 62639 transitions. Word has length 95 [2024-11-18 14:33:19,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:33:19,678 INFO L471 AbstractCegarLoop]: Abstraction has 47310 states and 62639 transitions. [2024-11-18 14:33:19,678 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) [2024-11-18 14:33:19,679 INFO L276 IsEmpty]: Start isEmpty. Operand 47310 states and 62639 transitions. [2024-11-18 14:33:19,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-18 14:33:19,684 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:33:19,684 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] [2024-11-18 14:33:19,684 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-18 14:33:19,684 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:33:19,685 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:33:19,685 INFO L85 PathProgramCache]: Analyzing trace with hash 1094142346, now seen corresponding path program 1 times [2024-11-18 14:33:19,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:33:19,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742703477] [2024-11-18 14:33:19,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:33:19,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:33:19,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:33:19,761 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-18 14:33:19,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:33:19,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742703477] [2024-11-18 14:33:19,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742703477] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:33:19,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:33:19,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 14:33:19,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403097437] [2024-11-18 14:33:19,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:33:19,763 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 14:33:19,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:33:19,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 14:33:19,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:33:19,764 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) [2024-11-18 14:33:22,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:33:22,470 INFO L93 Difference]: Finished difference Result 103350 states and 137103 transitions. [2024-11-18 14:33:22,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 14:33:22,471 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 [2024-11-18 14:33:22,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:33:22,837 INFO L225 Difference]: With dead ends: 103350 [2024-11-18 14:33:22,838 INFO L226 Difference]: Without dead ends: 59372 [2024-11-18 14:33:22,974 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 [2024-11-18 14:33:22,975 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 [2024-11-18 14:33:22,975 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] [2024-11-18 14:33:23,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59372 states. [2024-11-18 14:33:25,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59372 to 58545. [2024-11-18 14:33:25,697 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) [2024-11-18 14:33:25,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58545 states to 58545 states and 77378 transitions. [2024-11-18 14:33:25,899 INFO L78 Accepts]: Start accepts. Automaton has 58545 states and 77378 transitions. Word has length 96 [2024-11-18 14:33:25,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:33:25,899 INFO L471 AbstractCegarLoop]: Abstraction has 58545 states and 77378 transitions. [2024-11-18 14:33:25,899 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) [2024-11-18 14:33:25,899 INFO L276 IsEmpty]: Start isEmpty. Operand 58545 states and 77378 transitions. [2024-11-18 14:33:25,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-18 14:33:25,904 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:33:25,904 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] [2024-11-18 14:33:25,905 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-18 14:33:25,905 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:33:25,905 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:33:25,905 INFO L85 PathProgramCache]: Analyzing trace with hash -2018622111, now seen corresponding path program 1 times [2024-11-18 14:33:25,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:33:25,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42936111] [2024-11-18 14:33:25,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:33:25,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:33:25,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:33:25,958 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-18 14:33:25,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:33:25,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42936111] [2024-11-18 14:33:25,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42936111] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:33:25,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:33:25,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:33:25,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144210552] [2024-11-18 14:33:25,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:33:25,961 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:33:25,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:33:25,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:33:25,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:33:25,962 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) [2024-11-18 14:33:28,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:33:28,890 INFO L93 Difference]: Finished difference Result 115301 states and 151870 transitions. [2024-11-18 14:33:28,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:33:28,891 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 [2024-11-18 14:33:28,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:33:29,201 INFO L225 Difference]: With dead ends: 115301 [2024-11-18 14:33:29,202 INFO L226 Difference]: Without dead ends: 59388 [2024-11-18 14:33:29,335 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 [2024-11-18 14:33:29,336 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 [2024-11-18 14:33:29,336 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] [2024-11-18 14:33:29,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59388 states. [2024-11-18 14:33:32,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59388 to 54176. [2024-11-18 14:33:32,147 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) [2024-11-18 14:33:32,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54176 states to 54176 states and 70926 transitions. [2024-11-18 14:33:32,514 INFO L78 Accepts]: Start accepts. Automaton has 54176 states and 70926 transitions. Word has length 97 [2024-11-18 14:33:32,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:33:32,515 INFO L471 AbstractCegarLoop]: Abstraction has 54176 states and 70926 transitions. [2024-11-18 14:33:32,515 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) [2024-11-18 14:33:32,515 INFO L276 IsEmpty]: Start isEmpty. Operand 54176 states and 70926 transitions. [2024-11-18 14:33:32,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-18 14:33:32,520 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:33:32,521 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] [2024-11-18 14:33:32,521 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-18 14:33:32,521 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:33:32,521 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:33:32,521 INFO L85 PathProgramCache]: Analyzing trace with hash 1281651487, now seen corresponding path program 1 times [2024-11-18 14:33:32,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:33:32,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227348008] [2024-11-18 14:33:32,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:33:32,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:33:32,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:33:32,570 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-18 14:33:32,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:33:32,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227348008] [2024-11-18 14:33:32,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227348008] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:33:32,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:33:32,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 14:33:32,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124891649] [2024-11-18 14:33:32,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:33:32,572 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:33:32,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:33:32,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:33:32,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:33:32,573 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) [2024-11-18 14:33:34,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:33:34,714 INFO L93 Difference]: Finished difference Result 55998 states and 73156 transitions. [2024-11-18 14:33:34,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:33:34,715 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 [2024-11-18 14:33:34,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:33:34,958 INFO L225 Difference]: With dead ends: 55998 [2024-11-18 14:33:34,958 INFO L226 Difference]: Without dead ends: 54172 [2024-11-18 14:33:34,988 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 [2024-11-18 14:33:34,990 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 [2024-11-18 14:33:34,991 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] [2024-11-18 14:33:35,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54172 states.