./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pals_lcr.4.ufo.UNBOUNDED.pals+Problem12_label04.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d 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/combinations/pals_lcr.4.ufo.UNBOUNDED.pals+Problem12_label04.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 4fa6729695cae933208e9cd0cb2193db5a830deb3d010a9b31d9c8d14c52da9e --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 09:38:28,871 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 09:38:28,925 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 09:38:28,933 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 09:38:28,934 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 09:38:28,959 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 09:38:28,960 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 09:38:28,960 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 09:38:28,961 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 09:38:28,961 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 09:38:28,961 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 09:38:28,962 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 09:38:28,962 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 09:38:28,962 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 09:38:28,963 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 09:38:28,965 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 09:38:28,967 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 09:38:28,967 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 09:38:28,968 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 09:38:28,968 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 09:38:28,968 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 09:38:28,969 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 09:38:28,972 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 09:38:28,972 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 09:38:28,972 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 09:38:28,973 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 09:38:28,973 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 09:38:28,973 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 09:38:28,974 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 09:38:28,974 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 09:38:28,974 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 09:38:28,974 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 09:38:28,974 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 09:38:28,975 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 09:38:28,975 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 09:38:28,975 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 09:38:28,976 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 09:38:28,976 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 09:38:28,976 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 09:38:28,976 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 09:38:28,977 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 09:38:28,978 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 09:38:28,978 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4fa6729695cae933208e9cd0cb2193db5a830deb3d010a9b31d9c8d14c52da9e [2024-11-16 09:38:29,210 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 09:38:29,235 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 09:38:29,239 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 09:38:29,240 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 09:38:29,241 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 09:38:29,242 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pals_lcr.4.ufo.UNBOUNDED.pals+Problem12_label04.c [2024-11-16 09:38:30,746 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 09:38:31,257 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 09:38:31,261 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.4.ufo.UNBOUNDED.pals+Problem12_label04.c [2024-11-16 09:38:31,294 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/631b35357/7965473eb76b42648c38cedd98985da2/FLAGdee366bfd [2024-11-16 09:38:31,310 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/631b35357/7965473eb76b42648c38cedd98985da2 [2024-11-16 09:38:31,312 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 09:38:31,314 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 09:38:31,316 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 09:38:31,317 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 09:38:31,322 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 09:38:31,323 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 09:38:31" (1/1) ... [2024-11-16 09:38:31,324 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75444ddf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:38:31, skipping insertion in model container [2024-11-16 09:38:31,324 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 09:38:31" (1/1) ... [2024-11-16 09:38:31,414 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 09:38:31,740 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/combinations/pals_lcr.4.ufo.UNBOUNDED.pals+Problem12_label04.c[8712,8725] [2024-11-16 09:38:31,805 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/combinations/pals_lcr.4.ufo.UNBOUNDED.pals+Problem12_label04.c[15773,15786] [2024-11-16 09:38:32,496 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 09:38:32,507 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 09:38:32,537 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/combinations/pals_lcr.4.ufo.UNBOUNDED.pals+Problem12_label04.c[8712,8725] [2024-11-16 09:38:32,554 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/combinations/pals_lcr.4.ufo.UNBOUNDED.pals+Problem12_label04.c[15773,15786] [2024-11-16 09:38:32,938 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 09:38:32,966 INFO L204 MainTranslator]: Completed translation [2024-11-16 09:38:32,967 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:38:32 WrapperNode [2024-11-16 09:38:32,967 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 09:38:32,968 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 09:38:32,968 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 09:38:32,968 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 09:38:32,975 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:38:32" (1/1) ... [2024-11-16 09:38:33,025 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:38:32" (1/1) ... [2024-11-16 09:38:33,318 INFO L138 Inliner]: procedures = 36, calls = 21, calls flagged for inlining = 16, calls inlined = 16, statements flattened = 5037 [2024-11-16 09:38:33,318 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 09:38:33,319 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 09:38:33,319 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 09:38:33,319 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 09:38:33,329 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:38:32" (1/1) ... [2024-11-16 09:38:33,330 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:38:32" (1/1) ... [2024-11-16 09:38:33,366 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:38:32" (1/1) ... [2024-11-16 09:38:33,505 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]. [2024-11-16 09:38:33,505 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:38:32" (1/1) ... [2024-11-16 09:38:33,505 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:38:32" (1/1) ... [2024-11-16 09:38:33,692 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:38:32" (1/1) ... [2024-11-16 09:38:33,729 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:38:32" (1/1) ... [2024-11-16 09:38:33,764 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:38:32" (1/1) ... [2024-11-16 09:38:33,796 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:38:32" (1/1) ... [2024-11-16 09:38:33,914 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 09:38:33,916 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 09:38:33,920 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 09:38:33,920 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 09:38:33,921 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:38:32" (1/1) ... [2024-11-16 09:38:33,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 09:38:33,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 09:38:33,969 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) [2024-11-16 09:38:33,982 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 [2024-11-16 09:38:34,023 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 09:38:34,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 09:38:34,023 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 09:38:34,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 09:38:34,115 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 09:38:34,117 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 09:38:38,378 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L5025: havoc calculate_output3_#t~ret35#1; [2024-11-16 09:38:38,379 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L2056: havoc calculate_output_#t~ret33#1; [2024-11-16 09:38:38,379 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L3535: havoc calculate_output2_#t~ret34#1; [2024-11-16 09:38:38,539 INFO L? ?]: Removed 739 outVars from TransFormulas that were not future-live. [2024-11-16 09:38:38,540 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 09:38:38,581 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 09:38:38,582 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 09:38:38,582 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 09:38:38 BoogieIcfgContainer [2024-11-16 09:38:38,583 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 09:38:38,585 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 09:38:38,585 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 09:38:38,588 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 09:38:38,589 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 09:38:31" (1/3) ... [2024-11-16 09:38:38,589 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9ca53eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 09:38:38, skipping insertion in model container [2024-11-16 09:38:38,590 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:38:32" (2/3) ... [2024-11-16 09:38:38,591 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9ca53eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 09:38:38, skipping insertion in model container [2024-11-16 09:38:38,592 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 09:38:38" (3/3) ... [2024-11-16 09:38:38,593 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.ufo.UNBOUNDED.pals+Problem12_label04.c [2024-11-16 09:38:38,608 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 09:38:38,609 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-16 09:38:38,704 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 09:38:38,710 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;@f464a15, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 09:38:38,711 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-16 09:38:38,719 INFO L276 IsEmpty]: Start isEmpty. Operand has 894 states, 891 states have (on average 1.897867564534231) internal successors, (1691), 893 states have internal predecessors, (1691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:38:38,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-16 09:38:38,727 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:38:38,728 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] [2024-11-16 09:38:38,728 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:38:38,733 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:38:38,733 INFO L85 PathProgramCache]: Analyzing trace with hash -950479486, now seen corresponding path program 1 times [2024-11-16 09:38:38,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:38:38,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64038242] [2024-11-16 09:38:38,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:38:38,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:38:38,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:38:38,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:38:38,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:38:38,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64038242] [2024-11-16 09:38:38,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64038242] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:38:38,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:38:38,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 09:38:38,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100231168] [2024-11-16 09:38:38,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:38:39,001 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 09:38:39,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:38:39,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 09:38:39,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 09:38:39,027 INFO L87 Difference]: Start difference. First operand has 894 states, 891 states have (on average 1.897867564534231) internal successors, (1691), 893 states have internal predecessors, (1691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:38:39,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:38:39,116 INFO L93 Difference]: Finished difference Result 1755 states and 3324 transitions. [2024-11-16 09:38:39,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-16 09:38:39,119 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-11-16 09:38:39,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:38:39,146 INFO L225 Difference]: With dead ends: 1755 [2024-11-16 09:38:39,146 INFO L226 Difference]: Without dead ends: 826 [2024-11-16 09:38:39,154 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 09:38:39,159 INFO L432 NwaCegarLoop]: 1620 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1620 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:38:39,160 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1620 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:38:39,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 826 states. [2024-11-16 09:38:39,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 826 to 826. [2024-11-16 09:38:39,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 826 states, 824 states have (on average 1.8883495145631068) internal successors, (1556), 825 states have internal predecessors, (1556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:38:39,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 826 states to 826 states and 1556 transitions. [2024-11-16 09:38:39,235 INFO L78 Accepts]: Start accepts. Automaton has 826 states and 1556 transitions. Word has length 24 [2024-11-16 09:38:39,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:38:39,236 INFO L471 AbstractCegarLoop]: Abstraction has 826 states and 1556 transitions. [2024-11-16 09:38:39,236 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:38:39,237 INFO L276 IsEmpty]: Start isEmpty. Operand 826 states and 1556 transitions. [2024-11-16 09:38:39,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-16 09:38:39,238 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:38:39,238 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] [2024-11-16 09:38:39,238 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 09:38:39,239 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:38:39,239 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:38:39,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1947551839, now seen corresponding path program 1 times [2024-11-16 09:38:39,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:38:39,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212587493] [2024-11-16 09:38:39,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:38:39,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:38:39,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:38:39,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:38:39,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:38:39,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212587493] [2024-11-16 09:38:39,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212587493] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:38:39,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:38:39,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 09:38:39,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986745415] [2024-11-16 09:38:39,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:38:39,484 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 09:38:39,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:38:39,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 09:38:39,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 09:38:39,488 INFO L87 Difference]: Start difference. First operand 826 states and 1556 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:38:39,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:38:39,613 INFO L93 Difference]: Finished difference Result 871 states and 1623 transitions. [2024-11-16 09:38:39,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 09:38:39,614 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-11-16 09:38:39,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:38:39,620 INFO L225 Difference]: With dead ends: 871 [2024-11-16 09:38:39,620 INFO L226 Difference]: Without dead ends: 826 [2024-11-16 09:38:39,621 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 [2024-11-16 09:38:39,622 INFO L432 NwaCegarLoop]: 1554 mSDtfsCounter, 0 mSDsluCounter, 4634 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6188 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 09:38:39,623 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6188 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 09:38:39,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 826 states. [2024-11-16 09:38:39,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 826 to 826. [2024-11-16 09:38:39,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 826 states, 824 states have (on average 1.8604368932038835) internal successors, (1533), 825 states have internal predecessors, (1533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:38:39,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 826 states to 826 states and 1533 transitions. [2024-11-16 09:38:39,660 INFO L78 Accepts]: Start accepts. Automaton has 826 states and 1533 transitions. Word has length 24 [2024-11-16 09:38:39,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:38:39,660 INFO L471 AbstractCegarLoop]: Abstraction has 826 states and 1533 transitions. [2024-11-16 09:38:39,661 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:38:39,661 INFO L276 IsEmpty]: Start isEmpty. Operand 826 states and 1533 transitions. [2024-11-16 09:38:39,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-16 09:38:39,664 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:38:39,664 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] [2024-11-16 09:38:39,664 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 09:38:39,665 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:38:39,665 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:38:39,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1658798773, now seen corresponding path program 1 times [2024-11-16 09:38:39,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:38:39,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777707362] [2024-11-16 09:38:39,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:38:39,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:38:39,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:38:39,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:38:39,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:38:39,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777707362] [2024-11-16 09:38:39,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777707362] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:38:39,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:38:39,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 09:38:39,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702116763] [2024-11-16 09:38:39,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:38:39,881 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 09:38:39,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:38:39,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 09:38:39,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-16 09:38:39,882 INFO L87 Difference]: Start difference. First operand 826 states and 1533 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:38:40,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:38:40,080 INFO L93 Difference]: Finished difference Result 1154 states and 2037 transitions. [2024-11-16 09:38:40,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-16 09:38:40,081 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2024-11-16 09:38:40,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:38:40,085 INFO L225 Difference]: With dead ends: 1154 [2024-11-16 09:38:40,086 INFO L226 Difference]: Without dead ends: 1113 [2024-11-16 09:38:40,086 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-16 09:38:40,088 INFO L432 NwaCegarLoop]: 1527 mSDtfsCounter, 6317 mSDsluCounter, 646 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6317 SdHoareTripleChecker+Valid, 2173 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 09:38:40,088 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6317 Valid, 2173 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 09:38:40,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1113 states. [2024-11-16 09:38:40,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1113 to 864. [2024-11-16 09:38:40,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 864 states, 862 states have (on average 1.8468677494199537) internal successors, (1592), 863 states have internal predecessors, (1592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:38:40,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 864 states to 864 states and 1592 transitions. [2024-11-16 09:38:40,152 INFO L78 Accepts]: Start accepts. Automaton has 864 states and 1592 transitions. Word has length 46 [2024-11-16 09:38:40,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:38:40,153 INFO L471 AbstractCegarLoop]: Abstraction has 864 states and 1592 transitions. [2024-11-16 09:38:40,153 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:38:40,153 INFO L276 IsEmpty]: Start isEmpty. Operand 864 states and 1592 transitions. [2024-11-16 09:38:40,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-16 09:38:40,157 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:38:40,157 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] [2024-11-16 09:38:40,157 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 09:38:40,158 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:38:40,159 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:38:40,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1616606509, now seen corresponding path program 1 times [2024-11-16 09:38:40,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:38:40,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556665174] [2024-11-16 09:38:40,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:38:40,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:38:40,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:38:40,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:38:40,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:38:40,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556665174] [2024-11-16 09:38:40,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556665174] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:38:40,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:38:40,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 09:38:40,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390141471] [2024-11-16 09:38:40,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:38:40,363 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 09:38:40,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:38:40,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 09:38:40,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-16 09:38:40,364 INFO L87 Difference]: Start difference. First operand 864 states and 1592 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:38:40,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:38:40,493 INFO L93 Difference]: Finished difference Result 946 states and 1716 transitions. [2024-11-16 09:38:40,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 09:38:40,493 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2024-11-16 09:38:40,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:38:40,497 INFO L225 Difference]: With dead ends: 946 [2024-11-16 09:38:40,497 INFO L226 Difference]: Without dead ends: 867 [2024-11-16 09:38:40,498 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-11-16 09:38:40,499 INFO L432 NwaCegarLoop]: 1527 mSDtfsCounter, 2982 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2982 SdHoareTripleChecker+Valid, 1704 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:38:40,499 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2982 Valid, 1704 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:38:40,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 867 states. [2024-11-16 09:38:40,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 867 to 864. [2024-11-16 09:38:40,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 864 states, 862 states have (on average 1.845707656612529) internal successors, (1591), 863 states have internal predecessors, (1591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:38:40,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 864 states to 864 states and 1591 transitions. [2024-11-16 09:38:40,515 INFO L78 Accepts]: Start accepts. Automaton has 864 states and 1591 transitions. Word has length 48 [2024-11-16 09:38:40,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:38:40,515 INFO L471 AbstractCegarLoop]: Abstraction has 864 states and 1591 transitions. [2024-11-16 09:38:40,516 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:38:40,516 INFO L276 IsEmpty]: Start isEmpty. Operand 864 states and 1591 transitions. [2024-11-16 09:38:40,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-16 09:38:40,517 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:38:40,517 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] [2024-11-16 09:38:40,517 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-16 09:38:40,518 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:38:40,518 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:38:40,518 INFO L85 PathProgramCache]: Analyzing trace with hash 299013432, now seen corresponding path program 1 times [2024-11-16 09:38:40,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:38:40,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143945997] [2024-11-16 09:38:40,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:38:40,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:38:40,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:38:40,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:38:40,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:38:40,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143945997] [2024-11-16 09:38:40,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143945997] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:38:40,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:38:40,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 09:38:40,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460133523] [2024-11-16 09:38:40,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:38:40,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 09:38:40,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:38:40,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 09:38:40,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 09:38:40,594 INFO L87 Difference]: Start difference. First operand 864 states and 1591 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:38:40,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:38:40,634 INFO L93 Difference]: Finished difference Result 1010 states and 1813 transitions. [2024-11-16 09:38:40,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 09:38:40,635 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2024-11-16 09:38:40,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:38:40,640 INFO L225 Difference]: With dead ends: 1010 [2024-11-16 09:38:40,640 INFO L226 Difference]: Without dead ends: 931 [2024-11-16 09:38:40,641 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 [2024-11-16 09:38:40,642 INFO L432 NwaCegarLoop]: 1529 mSDtfsCounter, 1480 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1480 SdHoareTripleChecker+Valid, 1585 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:38:40,644 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1480 Valid, 1585 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:38:40,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 931 states. [2024-11-16 09:38:40,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 931 to 926. [2024-11-16 09:38:40,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 926 states, 924 states have (on average 1.8214285714285714) internal successors, (1683), 925 states have internal predecessors, (1683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:38:40,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1683 transitions. [2024-11-16 09:38:40,665 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1683 transitions. Word has length 49 [2024-11-16 09:38:40,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:38:40,666 INFO L471 AbstractCegarLoop]: Abstraction has 926 states and 1683 transitions. [2024-11-16 09:38:40,666 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:38:40,666 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1683 transitions. [2024-11-16 09:38:40,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-16 09:38:40,667 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:38:40,667 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] [2024-11-16 09:38:40,667 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-16 09:38:40,667 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:38:40,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:38:40,669 INFO L85 PathProgramCache]: Analyzing trace with hash 118985519, now seen corresponding path program 1 times [2024-11-16 09:38:40,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:38:40,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758584213] [2024-11-16 09:38:40,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:38:40,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:38:40,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:38:40,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:38:40,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:38:40,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758584213] [2024-11-16 09:38:40,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758584213] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:38:40,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:38:40,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 09:38:40,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808861471] [2024-11-16 09:38:40,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:38:40,732 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 09:38:40,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:38:40,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 09:38:40,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 09:38:40,733 INFO L87 Difference]: Start difference. First operand 926 states and 1683 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:38:40,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:38:40,764 INFO L93 Difference]: Finished difference Result 1192 states and 2081 transitions. [2024-11-16 09:38:40,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 09:38:40,765 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2024-11-16 09:38:40,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:38:40,769 INFO L225 Difference]: With dead ends: 1192 [2024-11-16 09:38:40,769 INFO L226 Difference]: Without dead ends: 1051 [2024-11-16 09:38:40,770 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 [2024-11-16 09:38:40,771 INFO L432 NwaCegarLoop]: 1572 mSDtfsCounter, 1491 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1491 SdHoareTripleChecker+Valid, 1640 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:38:40,773 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1491 Valid, 1640 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:38:40,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1051 states. [2024-11-16 09:38:40,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1051 to 1048. [2024-11-16 09:38:40,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1048 states, 1046 states have (on average 1.780114722753346) internal successors, (1862), 1047 states have internal predecessors, (1862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:38:40,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1048 states to 1048 states and 1862 transitions. [2024-11-16 09:38:40,793 INFO L78 Accepts]: Start accepts. Automaton has 1048 states and 1862 transitions. Word has length 50 [2024-11-16 09:38:40,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:38:40,794 INFO L471 AbstractCegarLoop]: Abstraction has 1048 states and 1862 transitions. [2024-11-16 09:38:40,794 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:38:40,794 INFO L276 IsEmpty]: Start isEmpty. Operand 1048 states and 1862 transitions. [2024-11-16 09:38:40,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-16 09:38:40,795 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:38:40,796 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] [2024-11-16 09:38:40,796 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-16 09:38:40,796 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:38:40,797 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:38:40,797 INFO L85 PathProgramCache]: Analyzing trace with hash 104535663, now seen corresponding path program 1 times [2024-11-16 09:38:40,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:38:40,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754394398] [2024-11-16 09:38:40,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:38:40,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:38:40,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:38:40,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:38:40,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:38:40,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754394398] [2024-11-16 09:38:40,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754394398] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:38:40,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:38:40,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 09:38:40,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178183259] [2024-11-16 09:38:40,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:38:40,857 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 09:38:40,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:38:40,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 09:38:40,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 09:38:40,858 INFO L87 Difference]: Start difference. First operand 1048 states and 1862 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:38:40,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:38:40,888 INFO L93 Difference]: Finished difference Result 1542 states and 2590 transitions. [2024-11-16 09:38:40,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 09:38:40,888 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2024-11-16 09:38:40,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:38:40,893 INFO L225 Difference]: With dead ends: 1542 [2024-11-16 09:38:40,893 INFO L226 Difference]: Without dead ends: 1279 [2024-11-16 09:38:40,894 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 [2024-11-16 09:38:40,895 INFO L432 NwaCegarLoop]: 1570 mSDtfsCounter, 1489 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1489 SdHoareTripleChecker+Valid, 1642 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:38:40,895 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1489 Valid, 1642 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:38:40,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1279 states. [2024-11-16 09:38:40,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1279 to 1276. [2024-11-16 09:38:40,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1276 states, 1274 states have (on average 1.717425431711146) internal successors, (2188), 1275 states have internal predecessors, (2188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:38:40,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1276 states to 1276 states and 2188 transitions. [2024-11-16 09:38:40,919 INFO L78 Accepts]: Start accepts. Automaton has 1276 states and 2188 transitions. Word has length 50 [2024-11-16 09:38:40,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:38:40,920 INFO L471 AbstractCegarLoop]: Abstraction has 1276 states and 2188 transitions. [2024-11-16 09:38:40,920 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:38:40,920 INFO L276 IsEmpty]: Start isEmpty. Operand 1276 states and 2188 transitions. [2024-11-16 09:38:40,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-16 09:38:40,921 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:38:40,921 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] [2024-11-16 09:38:40,921 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-16 09:38:40,922 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:38:40,922 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:38:40,922 INFO L85 PathProgramCache]: Analyzing trace with hash -2098828881, now seen corresponding path program 1 times [2024-11-16 09:38:40,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:38:40,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114162665] [2024-11-16 09:38:40,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:38:40,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:38:40,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:38:40,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:38:40,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:38:40,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114162665] [2024-11-16 09:38:40,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114162665] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:38:40,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:38:40,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 09:38:40,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77101276] [2024-11-16 09:38:40,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:38:40,973 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 09:38:40,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:38:40,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 09:38:40,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 09:38:40,974 INFO L87 Difference]: Start difference. First operand 1276 states and 2188 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:38:41,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:38:41,006 INFO L93 Difference]: Finished difference Result 2194 states and 3512 transitions. [2024-11-16 09:38:41,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 09:38:41,007 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2024-11-16 09:38:41,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:38:41,013 INFO L225 Difference]: With dead ends: 2194 [2024-11-16 09:38:41,014 INFO L226 Difference]: Without dead ends: 1703 [2024-11-16 09:38:41,015 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 [2024-11-16 09:38:41,015 INFO L432 NwaCegarLoop]: 1568 mSDtfsCounter, 1487 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1487 SdHoareTripleChecker+Valid, 1644 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:38:41,016 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1487 Valid, 1644 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:38:41,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1703 states. [2024-11-16 09:38:41,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1703 to 1700. [2024-11-16 09:38:41,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1700 states, 1698 states have (on average 1.634864546525324) internal successors, (2776), 1699 states have internal predecessors, (2776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:38:41,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1700 states to 1700 states and 2776 transitions. [2024-11-16 09:38:41,052 INFO L78 Accepts]: Start accepts. Automaton has 1700 states and 2776 transitions. Word has length 50 [2024-11-16 09:38:41,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:38:41,052 INFO L471 AbstractCegarLoop]: Abstraction has 1700 states and 2776 transitions. [2024-11-16 09:38:41,052 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:38:41,053 INFO L276 IsEmpty]: Start isEmpty. Operand 1700 states and 2776 transitions. [2024-11-16 09:38:41,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-16 09:38:41,053 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:38:41,053 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] [2024-11-16 09:38:41,054 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-16 09:38:41,054 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:38:41,054 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:38:41,054 INFO L85 PathProgramCache]: Analyzing trace with hash 1671861360, now seen corresponding path program 1 times [2024-11-16 09:38:41,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:38:41,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483650308] [2024-11-16 09:38:41,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:38:41,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:38:41,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:38:41,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:38:41,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:38:41,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483650308] [2024-11-16 09:38:41,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483650308] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:38:41,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:38:41,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 09:38:41,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217593672] [2024-11-16 09:38:41,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:38:41,232 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 09:38:41,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:38:41,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 09:38:41,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 09:38:41,232 INFO L87 Difference]: Start difference. First operand 1700 states and 2776 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:38:41,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:38:41,318 INFO L93 Difference]: Finished difference Result 1751 states and 2842 transitions. [2024-11-16 09:38:41,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 09:38:41,319 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2024-11-16 09:38:41,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:38:41,326 INFO L225 Difference]: With dead ends: 1751 [2024-11-16 09:38:41,326 INFO L226 Difference]: Without dead ends: 1748 [2024-11-16 09:38:41,327 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 [2024-11-16 09:38:41,327 INFO L432 NwaCegarLoop]: 1530 mSDtfsCounter, 0 mSDsluCounter, 4581 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6111 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:38:41,328 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6111 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:38:41,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1748 states. [2024-11-16 09:38:41,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1748 to 1748. [2024-11-16 09:38:41,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1748 states, 1746 states have (on average 1.6128293241695304) internal successors, (2816), 1747 states have internal predecessors, (2816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:38:41,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1748 states to 1748 states and 2816 transitions. [2024-11-16 09:38:41,374 INFO L78 Accepts]: Start accepts. Automaton has 1748 states and 2816 transitions. Word has length 50 [2024-11-16 09:38:41,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:38:41,375 INFO L471 AbstractCegarLoop]: Abstraction has 1748 states and 2816 transitions. [2024-11-16 09:38:41,375 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:38:41,375 INFO L276 IsEmpty]: Start isEmpty. Operand 1748 states and 2816 transitions. [2024-11-16 09:38:41,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-16 09:38:41,376 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:38:41,376 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] [2024-11-16 09:38:41,377 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-16 09:38:41,377 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:38:41,378 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:38:41,378 INFO L85 PathProgramCache]: Analyzing trace with hash 102114415, now seen corresponding path program 1 times [2024-11-16 09:38:41,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:38:41,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265440319] [2024-11-16 09:38:41,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:38:41,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:38:41,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:38:41,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:38:41,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:38:41,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265440319] [2024-11-16 09:38:41,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265440319] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:38:41,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:38:41,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 09:38:41,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072418896] [2024-11-16 09:38:41,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:38:41,430 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 09:38:41,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:38:41,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 09:38:41,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 09:38:41,430 INFO L87 Difference]: Start difference. First operand 1748 states and 2816 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:38:41,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:38:41,470 INFO L93 Difference]: Finished difference Result 2782 states and 4281 transitions. [2024-11-16 09:38:41,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 09:38:41,471 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2024-11-16 09:38:41,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:38:41,478 INFO L225 Difference]: With dead ends: 2782 [2024-11-16 09:38:41,479 INFO L226 Difference]: Without dead ends: 2218 [2024-11-16 09:38:41,480 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 [2024-11-16 09:38:41,481 INFO L432 NwaCegarLoop]: 1577 mSDtfsCounter, 1490 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1490 SdHoareTripleChecker+Valid, 1641 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:38:41,481 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1490 Valid, 1641 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:38:41,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2218 states. [2024-11-16 09:38:41,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2218 to 2215. [2024-11-16 09:38:41,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2215 states, 2213 states have (on average 1.5594215996384997) internal successors, (3451), 2214 states have internal predecessors, (3451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:38:41,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2215 states to 2215 states and 3451 transitions. [2024-11-16 09:38:41,533 INFO L78 Accepts]: Start accepts. Automaton has 2215 states and 3451 transitions. Word has length 52 [2024-11-16 09:38:41,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:38:41,534 INFO L471 AbstractCegarLoop]: Abstraction has 2215 states and 3451 transitions. [2024-11-16 09:38:41,534 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:38:41,534 INFO L276 IsEmpty]: Start isEmpty. Operand 2215 states and 3451 transitions. [2024-11-16 09:38:41,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-16 09:38:41,535 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:38:41,535 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] [2024-11-16 09:38:41,535 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-16 09:38:41,535 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:38:41,536 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:38:41,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1429576152, now seen corresponding path program 1 times [2024-11-16 09:38:41,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:38:41,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219646187] [2024-11-16 09:38:41,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:38:41,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:38:41,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:38:41,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:38:41,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:38:41,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219646187] [2024-11-16 09:38:41,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219646187] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:38:41,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:38:41,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 09:38:41,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069741719] [2024-11-16 09:38:41,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:38:41,610 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 09:38:41,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:38:41,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 09:38:41,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 09:38:41,610 INFO L87 Difference]: Start difference. First operand 2215 states and 3451 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:38:44,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:38:44,806 INFO L93 Difference]: Finished difference Result 3722 states and 6327 transitions. [2024-11-16 09:38:44,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 09:38:44,807 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2024-11-16 09:38:44,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:38:44,818 INFO L225 Difference]: With dead ends: 3722 [2024-11-16 09:38:44,818 INFO L226 Difference]: Without dead ends: 2967 [2024-11-16 09:38:44,820 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 09:38:44,820 INFO L432 NwaCegarLoop]: 562 mSDtfsCounter, 832 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 2261 mSolverCounterSat, 652 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 832 SdHoareTripleChecker+Valid, 571 SdHoareTripleChecker+Invalid, 2913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 652 IncrementalHoareTripleChecker+Valid, 2261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-16 09:38:44,821 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [832 Valid, 571 Invalid, 2913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [652 Valid, 2261 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-11-16 09:38:44,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2967 states. [2024-11-16 09:38:44,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2967 to 2967. [2024-11-16 09:38:44,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2967 states, 2965 states have (on average 1.4944350758853289) internal successors, (4431), 2966 states have internal predecessors, (4431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:38:44,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2967 states to 2967 states and 4431 transitions. [2024-11-16 09:38:44,895 INFO L78 Accepts]: Start accepts. Automaton has 2967 states and 4431 transitions. Word has length 63 [2024-11-16 09:38:44,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:38:44,895 INFO L471 AbstractCegarLoop]: Abstraction has 2967 states and 4431 transitions. [2024-11-16 09:38:44,895 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:38:44,895 INFO L276 IsEmpty]: Start isEmpty. Operand 2967 states and 4431 transitions. [2024-11-16 09:38:44,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-16 09:38:44,897 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:38:44,897 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-16 09:38:44,897 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-16 09:38:44,898 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:38:44,898 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:38:44,898 INFO L85 PathProgramCache]: Analyzing trace with hash -258028931, now seen corresponding path program 1 times [2024-11-16 09:38:44,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:38:44,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966065910] [2024-11-16 09:38:44,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:38:44,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:38:44,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:38:45,056 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-16 09:38:45,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:38:45,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966065910] [2024-11-16 09:38:45,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966065910] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:38:45,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:38:45,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 09:38:45,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572367616] [2024-11-16 09:38:45,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:38:45,057 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 09:38:45,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:38:45,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 09:38:45,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-16 09:38:45,058 INFO L87 Difference]: Start difference. First operand 2967 states and 4431 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:38:45,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:38:45,292 INFO L93 Difference]: Finished difference Result 8998 states and 12769 transitions. [2024-11-16 09:38:45,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 09:38:45,293 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2024-11-16 09:38:45,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:38:45,322 INFO L225 Difference]: With dead ends: 8998 [2024-11-16 09:38:45,322 INFO L226 Difference]: Without dead ends: 7571 [2024-11-16 09:38:45,328 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-16 09:38:45,329 INFO L432 NwaCegarLoop]: 1591 mSDtfsCounter, 4683 mSDsluCounter, 1805 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4683 SdHoareTripleChecker+Valid, 3396 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 09:38:45,329 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4683 Valid, 3396 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 09:38:45,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7571 states. [2024-11-16 09:38:45,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7571 to 4391. [2024-11-16 09:38:45,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4391 states, 4389 states have (on average 1.4543176122123491) internal successors, (6383), 4390 states have internal predecessors, (6383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:38:45,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4391 states to 4391 states and 6383 transitions. [2024-11-16 09:38:45,453 INFO L78 Accepts]: Start accepts. Automaton has 4391 states and 6383 transitions. Word has length 69 [2024-11-16 09:38:45,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:38:45,453 INFO L471 AbstractCegarLoop]: Abstraction has 4391 states and 6383 transitions. [2024-11-16 09:38:45,454 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:38:45,454 INFO L276 IsEmpty]: Start isEmpty. Operand 4391 states and 6383 transitions. [2024-11-16 09:38:45,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-16 09:38:45,455 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:38:45,455 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-16 09:38:45,455 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-16 09:38:45,456 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:38:45,456 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:38:45,456 INFO L85 PathProgramCache]: Analyzing trace with hash -272478787, now seen corresponding path program 1 times [2024-11-16 09:38:45,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:38:45,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135649549] [2024-11-16 09:38:45,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:38:45,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:38:45,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:38:45,576 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-16 09:38:45,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:38:45,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135649549] [2024-11-16 09:38:45,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135649549] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:38:45,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:38:45,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 09:38:45,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176187462] [2024-11-16 09:38:45,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:38:45,578 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 09:38:45,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:38:45,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 09:38:45,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-16 09:38:45,578 INFO L87 Difference]: Start difference. First operand 4391 states and 6383 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:38:45,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:38:45,776 INFO L93 Difference]: Finished difference Result 10422 states and 14721 transitions. [2024-11-16 09:38:45,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 09:38:45,776 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2024-11-16 09:38:45,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:38:45,805 INFO L225 Difference]: With dead ends: 10422 [2024-11-16 09:38:45,806 INFO L226 Difference]: Without dead ends: 8995 [2024-11-16 09:38:45,811 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-16 09:38:45,812 INFO L432 NwaCegarLoop]: 1587 mSDtfsCounter, 4710 mSDsluCounter, 1755 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4710 SdHoareTripleChecker+Valid, 3342 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 09:38:45,812 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4710 Valid, 3342 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 09:38:45,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8995 states. [2024-11-16 09:38:46,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8995 to 6535. [2024-11-16 09:38:46,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6535 states, 6533 states have (on average 1.422776672279198) internal successors, (9295), 6534 states have internal predecessors, (9295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:38:46,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6535 states to 6535 states and 9295 transitions. [2024-11-16 09:38:46,035 INFO L78 Accepts]: Start accepts. Automaton has 6535 states and 9295 transitions. Word has length 69 [2024-11-16 09:38:46,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:38:46,035 INFO L471 AbstractCegarLoop]: Abstraction has 6535 states and 9295 transitions. [2024-11-16 09:38:46,035 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:38:46,035 INFO L276 IsEmpty]: Start isEmpty. Operand 6535 states and 9295 transitions. [2024-11-16 09:38:46,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-16 09:38:46,037 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:38:46,037 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-16 09:38:46,037 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-16 09:38:46,037 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:38:46,038 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:38:46,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1819123965, now seen corresponding path program 1 times [2024-11-16 09:38:46,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:38:46,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996295618] [2024-11-16 09:38:46,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:38:46,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:38:46,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:38:46,144 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-16 09:38:46,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:38:46,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996295618] [2024-11-16 09:38:46,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996295618] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:38:46,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:38:46,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 09:38:46,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769812743] [2024-11-16 09:38:46,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:38:46,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 09:38:46,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:38:46,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 09:38:46,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-16 09:38:46,147 INFO L87 Difference]: Start difference. First operand 6535 states and 9295 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:38:46,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:38:46,377 INFO L93 Difference]: Finished difference Result 11846 states and 16673 transitions. [2024-11-16 09:38:46,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 09:38:46,378 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2024-11-16 09:38:46,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:38:46,398 INFO L225 Difference]: With dead ends: 11846 [2024-11-16 09:38:46,399 INFO L226 Difference]: Without dead ends: 10419 [2024-11-16 09:38:46,404 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-16 09:38:46,405 INFO L432 NwaCegarLoop]: 1590 mSDtfsCounter, 4693 mSDsluCounter, 1775 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4693 SdHoareTripleChecker+Valid, 3365 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 09:38:46,405 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4693 Valid, 3365 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 09:38:46,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10419 states. [2024-11-16 09:38:46,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10419 to 7959. [2024-11-16 09:38:46,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7959 states, 7957 states have (on average 1.4134724142264672) internal successors, (11247), 7958 states have internal predecessors, (11247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:38:46,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7959 states to 7959 states and 11247 transitions. [2024-11-16 09:38:46,604 INFO L78 Accepts]: Start accepts. Automaton has 7959 states and 11247 transitions. Word has length 69 [2024-11-16 09:38:46,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:38:46,604 INFO L471 AbstractCegarLoop]: Abstraction has 7959 states and 11247 transitions. [2024-11-16 09:38:46,604 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:38:46,604 INFO L276 IsEmpty]: Start isEmpty. Operand 7959 states and 11247 transitions. [2024-11-16 09:38:46,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-16 09:38:46,606 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:38:46,606 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-16 09:38:46,607 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-16 09:38:46,607 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:38:46,607 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:38:46,607 INFO L85 PathProgramCache]: Analyzing trace with hash -863306273, now seen corresponding path program 1 times [2024-11-16 09:38:46,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:38:46,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657568883] [2024-11-16 09:38:46,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:38:46,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:38:46,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:38:46,698 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:38:46,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:38:46,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657568883] [2024-11-16 09:38:46,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657568883] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:38:46,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:38:46,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 09:38:46,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671287266] [2024-11-16 09:38:46,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:38:46,700 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 09:38:46,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:38:46,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 09:38:46,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 09:38:46,701 INFO L87 Difference]: Start difference. First operand 7959 states and 11247 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:38:46,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:38:46,792 INFO L93 Difference]: Finished difference Result 12593 states and 17680 transitions. [2024-11-16 09:38:46,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 09:38:46,793 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2024-11-16 09:38:46,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:38:46,804 INFO L225 Difference]: With dead ends: 12593 [2024-11-16 09:38:46,804 INFO L226 Difference]: Without dead ends: 6174 [2024-11-16 09:38:46,811 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 [2024-11-16 09:38:46,812 INFO L432 NwaCegarLoop]: 1567 mSDtfsCounter, 43 mSDsluCounter, 1518 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 3085 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:38:46,812 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 3085 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:38:46,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6174 states. [2024-11-16 09:38:46,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6174 to 6171. [2024-11-16 09:38:46,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6171 states, 6169 states have (on average 1.4282703841789592) internal successors, (8811), 6170 states have internal predecessors, (8811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:38:46,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6171 states to 6171 states and 8811 transitions. [2024-11-16 09:38:46,999 INFO L78 Accepts]: Start accepts. Automaton has 6171 states and 8811 transitions. Word has length 71 [2024-11-16 09:38:46,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:38:46,999 INFO L471 AbstractCegarLoop]: Abstraction has 6171 states and 8811 transitions. [2024-11-16 09:38:47,000 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:38:47,000 INFO L276 IsEmpty]: Start isEmpty. Operand 6171 states and 8811 transitions. [2024-11-16 09:38:47,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-16 09:38:47,001 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:38:47,001 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-16 09:38:47,001 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-16 09:38:47,002 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:38:47,002 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:38:47,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1431519171, now seen corresponding path program 1 times [2024-11-16 09:38:47,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:38:47,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085284447] [2024-11-16 09:38:47,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:38:47,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:38:47,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:38:47,123 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-16 09:38:47,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:38:47,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085284447] [2024-11-16 09:38:47,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085284447] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:38:47,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:38:47,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 09:38:47,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362357563] [2024-11-16 09:38:47,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:38:47,124 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 09:38:47,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:38:47,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 09:38:47,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-16 09:38:47,125 INFO L87 Difference]: Start difference. First operand 6171 states and 8811 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:38:47,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:38:47,327 INFO L93 Difference]: Finished difference Result 10282 states and 14517 transitions. [2024-11-16 09:38:47,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 09:38:47,328 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2024-11-16 09:38:47,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:38:47,344 INFO L225 Difference]: With dead ends: 10282 [2024-11-16 09:38:47,344 INFO L226 Difference]: Without dead ends: 9255 [2024-11-16 09:38:47,349 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-16 09:38:47,350 INFO L432 NwaCegarLoop]: 1584 mSDtfsCounter, 4691 mSDsluCounter, 1853 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4691 SdHoareTripleChecker+Valid, 3437 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 09:38:47,350 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4691 Valid, 3437 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 09:38:47,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9255 states. [2024-11-16 09:38:47,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9255 to 7195. [2024-11-16 09:38:47,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7195 states, 7193 states have (on average 1.4206867788127346) internal successors, (10219), 7194 states have internal predecessors, (10219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:38:47,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7195 states to 7195 states and 10219 transitions. [2024-11-16 09:38:47,511 INFO L78 Accepts]: Start accepts. Automaton has 7195 states and 10219 transitions. Word has length 71 [2024-11-16 09:38:47,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:38:47,512 INFO L471 AbstractCegarLoop]: Abstraction has 7195 states and 10219 transitions. [2024-11-16 09:38:47,512 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:38:47,512 INFO L276 IsEmpty]: Start isEmpty. Operand 7195 states and 10219 transitions. [2024-11-16 09:38:47,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-16 09:38:47,514 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:38:47,514 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-16 09:38:47,514 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-16 09:38:47,514 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:38:47,515 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:38:47,515 INFO L85 PathProgramCache]: Analyzing trace with hash 988971935, now seen corresponding path program 1 times [2024-11-16 09:38:47,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:38:47,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456974889] [2024-11-16 09:38:47,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:38:47,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:38:47,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:38:47,599 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:38:47,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:38:47,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456974889] [2024-11-16 09:38:47,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456974889] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:38:47,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:38:47,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 09:38:47,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501250365] [2024-11-16 09:38:47,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:38:47,601 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 09:38:47,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:38:47,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 09:38:47,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 09:38:47,602 INFO L87 Difference]: Start difference. First operand 7195 states and 10219 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:38:47,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:38:47,665 INFO L93 Difference]: Finished difference Result 10017 states and 14095 transitions. [2024-11-16 09:38:47,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 09:38:47,666 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2024-11-16 09:38:47,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:38:47,674 INFO L225 Difference]: With dead ends: 10017 [2024-11-16 09:38:47,674 INFO L226 Difference]: Without dead ends: 4382 [2024-11-16 09:38:47,680 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 [2024-11-16 09:38:47,680 INFO L432 NwaCegarLoop]: 1560 mSDtfsCounter, 36 mSDsluCounter, 1510 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 3070 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:38:47,681 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 3070 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:38:47,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4382 states. [2024-11-16 09:38:47,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4382 to 4379. [2024-11-16 09:38:47,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4379 states, 4377 states have (on average 1.4400274160383824) internal successors, (6303), 4378 states have internal predecessors, (6303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:38:47,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4379 states to 4379 states and 6303 transitions. [2024-11-16 09:38:47,764 INFO L78 Accepts]: Start accepts. Automaton has 4379 states and 6303 transitions. Word has length 73 [2024-11-16 09:38:47,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:38:47,764 INFO L471 AbstractCegarLoop]: Abstraction has 4379 states and 6303 transitions. [2024-11-16 09:38:47,764 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:38:47,765 INFO L276 IsEmpty]: Start isEmpty. Operand 4379 states and 6303 transitions. [2024-11-16 09:38:47,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-16 09:38:47,766 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:38:47,766 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] [2024-11-16 09:38:47,766 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-16 09:38:47,766 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:38:47,767 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:38:47,767 INFO L85 PathProgramCache]: Analyzing trace with hash -1742418655, now seen corresponding path program 1 times [2024-11-16 09:38:47,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:38:47,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583631055] [2024-11-16 09:38:47,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:38:47,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:38:47,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:38:47,863 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:38:47,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:38:47,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583631055] [2024-11-16 09:38:47,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583631055] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:38:47,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:38:47,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 09:38:47,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834433407] [2024-11-16 09:38:47,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:38:47,865 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 09:38:47,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:38:47,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 09:38:47,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 09:38:47,866 INFO L87 Difference]: Start difference. First operand 4379 states and 6303 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:38:47,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:38:47,937 INFO L93 Difference]: Finished difference Result 5793 states and 8221 transitions. [2024-11-16 09:38:47,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 09:38:47,938 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2024-11-16 09:38:47,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:38:47,942 INFO L225 Difference]: With dead ends: 5793 [2024-11-16 09:38:47,943 INFO L226 Difference]: Without dead ends: 2974 [2024-11-16 09:38:47,946 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 [2024-11-16 09:38:47,946 INFO L432 NwaCegarLoop]: 1553 mSDtfsCounter, 31 mSDsluCounter, 1502 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 3055 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:38:47,946 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 3055 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:38:47,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2974 states. [2024-11-16 09:38:47,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2974 to 2971. [2024-11-16 09:38:47,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2971 states, 2969 states have (on average 1.4708656113169418) internal successors, (4367), 2970 states have internal predecessors, (4367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:38:47,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2971 states to 2971 states and 4367 transitions. [2024-11-16 09:38:47,996 INFO L78 Accepts]: Start accepts. Automaton has 2971 states and 4367 transitions. Word has length 75 [2024-11-16 09:38:47,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:38:47,997 INFO L471 AbstractCegarLoop]: Abstraction has 2971 states and 4367 transitions. [2024-11-16 09:38:47,997 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:38:47,997 INFO L276 IsEmpty]: Start isEmpty. Operand 2971 states and 4367 transitions. [2024-11-16 09:38:47,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-16 09:38:47,999 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:38:47,999 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-16 09:38:48,000 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-16 09:38:48,000 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:38:48,000 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:38:48,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1576078744, now seen corresponding path program 1 times [2024-11-16 09:38:48,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:38:48,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821177933] [2024-11-16 09:38:48,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:38:48,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:38:48,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:38:48,082 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:38:48,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:38:48,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821177933] [2024-11-16 09:38:48,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821177933] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:38:48,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:38:48,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 09:38:48,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172781703] [2024-11-16 09:38:48,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:38:48,084 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 09:38:48,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:38:48,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 09:38:48,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 09:38:48,085 INFO L87 Difference]: Start difference. First operand 2971 states and 4367 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:38:48,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:38:48,116 INFO L93 Difference]: Finished difference Result 3681 states and 5317 transitions. [2024-11-16 09:38:48,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 09:38:48,116 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2024-11-16 09:38:48,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:38:48,121 INFO L225 Difference]: With dead ends: 3681 [2024-11-16 09:38:48,121 INFO L226 Difference]: Without dead ends: 2270 [2024-11-16 09:38:48,123 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 [2024-11-16 09:38:48,124 INFO L432 NwaCegarLoop]: 1546 mSDtfsCounter, 28 mSDsluCounter, 1494 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 3040 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:38:48,124 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 3040 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:38:48,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2270 states. [2024-11-16 09:38:48,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2270 to 2267. [2024-11-16 09:38:48,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2267 states, 2265 states have (on average 1.5055187637969094) internal successors, (3410), 2266 states have internal predecessors, (3410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:38:48,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2267 states to 2267 states and 3410 transitions. [2024-11-16 09:38:48,159 INFO L78 Accepts]: Start accepts. Automaton has 2267 states and 3410 transitions. Word has length 77 [2024-11-16 09:38:48,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:38:48,160 INFO L471 AbstractCegarLoop]: Abstraction has 2267 states and 3410 transitions. [2024-11-16 09:38:48,160 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:38:48,160 INFO L276 IsEmpty]: Start isEmpty. Operand 2267 states and 3410 transitions. [2024-11-16 09:38:48,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-16 09:38:48,161 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:38:48,161 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-16 09:38:48,161 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-16 09:38:48,161 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:38:48,162 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:38:48,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1838446799, now seen corresponding path program 1 times [2024-11-16 09:38:48,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:38:48,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661117967] [2024-11-16 09:38:48,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:38:48,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:38:48,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:38:48,599 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:38:48,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:38:48,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661117967] [2024-11-16 09:38:48,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661117967] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 09:38:48,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [238793360] [2024-11-16 09:38:48,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:38:48,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 09:38:48,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 09:38:48,602 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 09:38:48,603 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-16 09:38:48,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:38:48,733 INFO L255 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-16 09:38:48,740 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 09:38:49,262 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:38:49,263 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 09:38:50,311 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:38:50,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [238793360] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 09:38:50,312 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 09:38:50,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2024-11-16 09:38:50,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355420010] [2024-11-16 09:38:50,313 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 09:38:50,313 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-16 09:38:50,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:38:50,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-16 09:38:50,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=373, Unknown=0, NotChecked=0, Total=462 [2024-11-16 09:38:50,315 INFO L87 Difference]: Start difference. First operand 2267 states and 3410 transitions. Second operand has 22 states, 22 states have (on average 8.409090909090908) internal successors, (185), 21 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:38:50,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:38:50,845 INFO L93 Difference]: Finished difference Result 3750 states and 5385 transitions. [2024-11-16 09:38:50,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-16 09:38:50,846 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 8.409090909090908) internal successors, (185), 21 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2024-11-16 09:38:50,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:38:50,852 INFO L225 Difference]: With dead ends: 3750 [2024-11-16 09:38:50,853 INFO L226 Difference]: Without dead ends: 3043 [2024-11-16 09:38:50,855 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=215, Invalid=655, Unknown=0, NotChecked=0, Total=870 [2024-11-16 09:38:50,857 INFO L432 NwaCegarLoop]: 1508 mSDtfsCounter, 12217 mSDsluCounter, 4791 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12217 SdHoareTripleChecker+Valid, 6299 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 09:38:50,858 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12217 Valid, 6299 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 09:38:50,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3043 states. [2024-11-16 09:38:50,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3043 to 3015. [2024-11-16 09:38:50,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3015 states, 3013 states have (on average 1.4530368403584468) internal successors, (4378), 3014 states have internal predecessors, (4378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:38:50,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3015 states to 3015 states and 4378 transitions. [2024-11-16 09:38:50,945 INFO L78 Accepts]: Start accepts. Automaton has 3015 states and 4378 transitions. Word has length 79 [2024-11-16 09:38:50,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:38:50,945 INFO L471 AbstractCegarLoop]: Abstraction has 3015 states and 4378 transitions. [2024-11-16 09:38:50,946 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.409090909090908) internal successors, (185), 21 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:38:50,946 INFO L276 IsEmpty]: Start isEmpty. Operand 3015 states and 4378 transitions. [2024-11-16 09:38:50,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-16 09:38:50,948 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:38:50,948 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-16 09:38:50,967 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-16 09:38:51,152 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 09:38:51,153 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:38:51,153 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:38:51,153 INFO L85 PathProgramCache]: Analyzing trace with hash 285605007, now seen corresponding path program 1 times [2024-11-16 09:38:51,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:38:51,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970441360] [2024-11-16 09:38:51,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:38:51,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:38:51,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:38:51,648 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:38:51,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:38:51,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970441360] [2024-11-16 09:38:51,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970441360] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 09:38:51,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1823906354] [2024-11-16 09:38:51,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:38:51,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 09:38:51,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 09:38:51,651 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 09:38:51,653 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-16 09:38:51,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:38:51,769 INFO L255 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-16 09:38:51,771 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 09:38:52,219 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:38:52,220 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 09:38:52,907 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:38:52,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1823906354] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 09:38:52,908 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 09:38:52,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2024-11-16 09:38:52,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720283268] [2024-11-16 09:38:52,908 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 09:38:52,908 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-16 09:38:52,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:38:52,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-16 09:38:52,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=338, Unknown=0, NotChecked=0, Total=420 [2024-11-16 09:38:52,909 INFO L87 Difference]: Start difference. First operand 3015 states and 4378 transitions. Second operand has 21 states, 21 states have (on average 8.0) internal successors, (168), 20 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:38:53,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:38:53,429 INFO L93 Difference]: Finished difference Result 6060 states and 8388 transitions. [2024-11-16 09:38:53,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-16 09:38:53,430 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.0) internal successors, (168), 20 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2024-11-16 09:38:53,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:38:53,439 INFO L225 Difference]: With dead ends: 6060 [2024-11-16 09:38:53,439 INFO L226 Difference]: Without dead ends: 4605 [2024-11-16 09:38:53,442 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 145 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=241, Invalid=751, Unknown=0, NotChecked=0, Total=992 [2024-11-16 09:38:53,443 INFO L432 NwaCegarLoop]: 1508 mSDtfsCounter, 15408 mSDsluCounter, 4795 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15408 SdHoareTripleChecker+Valid, 6303 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 09:38:53,443 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15408 Valid, 6303 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 409 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 09:38:53,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4605 states. [2024-11-16 09:38:53,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4605 to 4555. [2024-11-16 09:38:53,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4555 states, 4553 states have (on average 1.3940259169778169) internal successors, (6347), 4554 states have internal predecessors, (6347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:38:53,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4555 states to 4555 states and 6347 transitions. [2024-11-16 09:38:53,539 INFO L78 Accepts]: Start accepts. Automaton has 4555 states and 6347 transitions. Word has length 79 [2024-11-16 09:38:53,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:38:53,539 INFO L471 AbstractCegarLoop]: Abstraction has 4555 states and 6347 transitions. [2024-11-16 09:38:53,539 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.0) internal successors, (168), 20 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:38:53,539 INFO L276 IsEmpty]: Start isEmpty. Operand 4555 states and 6347 transitions. [2024-11-16 09:38:53,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-16 09:38:53,541 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:38:53,541 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-16 09:38:53,557 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-16 09:38:53,741 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-16 09:38:53,742 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:38:53,742 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:38:53,742 INFO L85 PathProgramCache]: Analyzing trace with hash 1113579119, now seen corresponding path program 1 times [2024-11-16 09:38:53,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:38:53,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804851263] [2024-11-16 09:38:53,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:38:53,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:38:53,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:38:54,668 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:38:54,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:38:54,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804851263] [2024-11-16 09:38:54,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804851263] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 09:38:54,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [624372475] [2024-11-16 09:38:54,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:38:54,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 09:38:54,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 09:38:54,671 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 09:38:54,671 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-16 09:38:54,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:38:54,790 INFO L255 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-16 09:38:54,792 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 09:38:55,251 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:38:55,251 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 09:38:56,360 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:38:56,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [624372475] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 09:38:56,360 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 09:38:56,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 13] total 32 [2024-11-16 09:38:56,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814006614] [2024-11-16 09:38:56,361 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 09:38:56,361 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-16 09:38:56,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:38:56,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-16 09:38:56,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=876, Unknown=0, NotChecked=0, Total=992 [2024-11-16 09:38:56,363 INFO L87 Difference]: Start difference. First operand 4555 states and 6347 transitions. Second operand has 32 states, 32 states have (on average 6.71875) internal successors, (215), 32 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:38:58,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:38:58,355 INFO L93 Difference]: Finished difference Result 17160 states and 22663 transitions. [2024-11-16 09:38:58,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-16 09:38:58,355 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 6.71875) internal successors, (215), 32 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2024-11-16 09:38:58,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:38:58,377 INFO L225 Difference]: With dead ends: 17160 [2024-11-16 09:38:58,378 INFO L226 Difference]: Without dead ends: 14165 [2024-11-16 09:38:58,386 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 892 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=748, Invalid=3542, Unknown=0, NotChecked=0, Total=4290 [2024-11-16 09:38:58,387 INFO L432 NwaCegarLoop]: 1547 mSDtfsCounter, 20170 mSDsluCounter, 10051 mSDsCounter, 0 mSdLazyCounter, 1248 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20170 SdHoareTripleChecker+Valid, 11598 SdHoareTripleChecker+Invalid, 1293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-16 09:38:58,387 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20170 Valid, 11598 Invalid, 1293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1248 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-16 09:38:58,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14165 states. [2024-11-16 09:38:58,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14165 to 14147. [2024-11-16 09:38:58,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14147 states, 14145 states have (on average 1.3150229763167196) internal successors, (18601), 14146 states have internal predecessors, (18601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:38:58,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14147 states to 14147 states and 18601 transitions. [2024-11-16 09:38:58,774 INFO L78 Accepts]: Start accepts. Automaton has 14147 states and 18601 transitions. Word has length 79 [2024-11-16 09:38:58,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:38:58,775 INFO L471 AbstractCegarLoop]: Abstraction has 14147 states and 18601 transitions. [2024-11-16 09:38:58,775 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 6.71875) internal successors, (215), 32 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:38:58,775 INFO L276 IsEmpty]: Start isEmpty. Operand 14147 states and 18601 transitions. [2024-11-16 09:38:58,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-16 09:38:58,778 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:38:58,778 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-16 09:38:58,796 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-16 09:38:58,979 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 09:38:58,980 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:38:58,980 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:38:58,980 INFO L85 PathProgramCache]: Analyzing trace with hash -1081699053, now seen corresponding path program 1 times [2024-11-16 09:38:58,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:38:58,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80964645] [2024-11-16 09:38:58,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:38:58,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:38:59,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:38:59,239 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:38:59,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:38:59,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80964645] [2024-11-16 09:38:59,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80964645] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 09:38:59,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1917370990] [2024-11-16 09:38:59,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:38:59,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 09:38:59,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 09:38:59,242 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 09:38:59,244 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-16 09:38:59,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:38:59,358 INFO L255 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-16 09:38:59,361 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 09:39:00,658 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:39:00,659 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 09:39:02,485 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:39:02,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1917370990] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 09:39:02,486 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 09:39:02,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 17, 17] total 38 [2024-11-16 09:39:02,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664918233] [2024-11-16 09:39:02,486 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 09:39:02,487 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-16 09:39:02,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:39:02,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-16 09:39:02,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=238, Invalid=1244, Unknown=0, NotChecked=0, Total=1482 [2024-11-16 09:39:02,489 INFO L87 Difference]: Start difference. First operand 14147 states and 18601 transitions. Second operand has 39 states, 39 states have (on average 5.282051282051282) internal successors, (206), 38 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:05,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:39:05,614 INFO L93 Difference]: Finished difference Result 29385 states and 38139 transitions. [2024-11-16 09:39:05,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-16 09:39:05,614 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 5.282051282051282) internal successors, (206), 38 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2024-11-16 09:39:05,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:39:05,638 INFO L225 Difference]: With dead ends: 29385 [2024-11-16 09:39:05,638 INFO L226 Difference]: Without dead ends: 16798 [2024-11-16 09:39:05,651 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1817 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1559, Invalid=5581, Unknown=0, NotChecked=0, Total=7140 [2024-11-16 09:39:05,652 INFO L432 NwaCegarLoop]: 1549 mSDtfsCounter, 21978 mSDsluCounter, 15772 mSDsCounter, 0 mSdLazyCounter, 1324 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21978 SdHoareTripleChecker+Valid, 17321 SdHoareTripleChecker+Invalid, 1378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-16 09:39:05,652 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21978 Valid, 17321 Invalid, 1378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1324 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-16 09:39:05,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16798 states. [2024-11-16 09:39:06,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16798 to 14987. [2024-11-16 09:39:06,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14987 states, 14985 states have (on average 1.3044377711044377) internal successors, (19547), 14986 states have internal predecessors, (19547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:06,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14987 states to 14987 states and 19547 transitions. [2024-11-16 09:39:06,054 INFO L78 Accepts]: Start accepts. Automaton has 14987 states and 19547 transitions. Word has length 80 [2024-11-16 09:39:06,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:39:06,055 INFO L471 AbstractCegarLoop]: Abstraction has 14987 states and 19547 transitions. [2024-11-16 09:39:06,055 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 5.282051282051282) internal successors, (206), 38 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:06,055 INFO L276 IsEmpty]: Start isEmpty. Operand 14987 states and 19547 transitions. [2024-11-16 09:39:06,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-16 09:39:06,058 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:39:06,058 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-16 09:39:06,075 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-16 09:39:06,258 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 09:39:06,259 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:39:06,259 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:39:06,259 INFO L85 PathProgramCache]: Analyzing trace with hash 1277964906, now seen corresponding path program 1 times [2024-11-16 09:39:06,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:39:06,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96697723] [2024-11-16 09:39:06,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:39:06,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:39:06,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:39:08,556 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:39:08,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:39:08,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96697723] [2024-11-16 09:39:08,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96697723] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 09:39:08,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1832129162] [2024-11-16 09:39:08,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:39:08,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 09:39:08,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 09:39:08,559 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 09:39:08,561 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-16 09:39:08,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:39:08,683 INFO L255 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-11-16 09:39:08,687 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 09:39:12,070 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:39:12,071 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 09:39:17,852 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:39:17,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1832129162] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 09:39:17,853 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 09:39:17,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 23, 23] total 67 [2024-11-16 09:39:17,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54529090] [2024-11-16 09:39:17,853 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 09:39:17,854 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2024-11-16 09:39:17,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:39:17,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2024-11-16 09:39:17,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=410, Invalid=4012, Unknown=0, NotChecked=0, Total=4422 [2024-11-16 09:39:17,856 INFO L87 Difference]: Start difference. First operand 14987 states and 19547 transitions. Second operand has 67 states, 67 states have (on average 3.328358208955224) internal successors, (223), 67 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)