./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem16_label14.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 023d838f 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/eca-rers2012/Problem16_label14.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 37136c333282e67f438e7bf13fb35b60043f7970afe7b0fb63a25a209e0dddcf --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-09 19:46:17,768 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 19:46:17,863 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 19:46:17,866 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 19:46:17,868 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 19:46:17,896 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 19:46:17,898 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 19:46:17,898 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 19:46:17,899 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 19:46:17,901 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 19:46:17,901 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 19:46:17,901 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 19:46:17,902 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 19:46:17,902 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 19:46:17,904 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 19:46:17,904 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 19:46:17,904 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 19:46:17,905 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 19:46:17,905 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 19:46:17,905 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 19:46:17,906 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 19:46:17,906 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 19:46:17,906 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 19:46:17,907 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 19:46:17,907 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 19:46:17,907 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 19:46:17,907 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 19:46:17,908 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 19:46:17,908 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-09 19:46:17,908 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 19:46:17,909 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 19:46:17,909 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 19:46:17,909 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 19:46:17,909 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 19:46:17,910 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 19:46:17,910 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 19:46:17,910 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 19:46:17,911 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 19:46:17,911 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 19:46:17,911 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 19:46:17,911 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 19:46:17,913 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 19:46:17,913 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 37136c333282e67f438e7bf13fb35b60043f7970afe7b0fb63a25a209e0dddcf [2024-11-09 19:46:18,182 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 19:46:18,203 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 19:46:18,208 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 19:46:18,209 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 19:46:18,209 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 19:46:18,210 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem16_label14.c [2024-11-09 19:46:19,628 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 19:46:19,961 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 19:46:19,962 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem16_label14.c [2024-11-09 19:46:19,985 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/450d4a9f5/8dd16fa59dc44a9fb12e09e8f02390c5/FLAG8fe5cf951 [2024-11-09 19:46:20,001 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/450d4a9f5/8dd16fa59dc44a9fb12e09e8f02390c5 [2024-11-09 19:46:20,004 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 19:46:20,006 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 19:46:20,008 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 19:46:20,008 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 19:46:20,014 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 19:46:20,015 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:46:20" (1/1) ... [2024-11-09 19:46:20,016 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29c6f332 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:46:20, skipping insertion in model container [2024-11-09 19:46:20,016 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:46:20" (1/1) ... [2024-11-09 19:46:20,082 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 19:46:20,268 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/eca-rers2012/Problem16_label14.c[2092,2105] [2024-11-09 19:46:20,659 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 19:46:20,668 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 19:46:20,685 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/eca-rers2012/Problem16_label14.c[2092,2105] [2024-11-09 19:46:20,892 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 19:46:20,912 INFO L204 MainTranslator]: Completed translation [2024-11-09 19:46:20,913 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:46:20 WrapperNode [2024-11-09 19:46:20,913 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 19:46:20,914 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 19:46:20,914 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 19:46:20,914 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 19:46:20,921 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:46:20" (1/1) ... [2024-11-09 19:46:20,962 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:46:20" (1/1) ... [2024-11-09 19:46:21,075 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1769 [2024-11-09 19:46:21,076 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 19:46:21,077 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 19:46:21,077 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 19:46:21,077 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 19:46:21,087 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:46:20" (1/1) ... [2024-11-09 19:46:21,088 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:46:20" (1/1) ... [2024-11-09 19:46:21,102 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:46:20" (1/1) ... [2024-11-09 19:46:21,168 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]. [2024-11-09 19:46:21,168 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:46:20" (1/1) ... [2024-11-09 19:46:21,168 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:46:20" (1/1) ... [2024-11-09 19:46:21,219 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:46:20" (1/1) ... [2024-11-09 19:46:21,225 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:46:20" (1/1) ... [2024-11-09 19:46:21,239 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:46:20" (1/1) ... [2024-11-09 19:46:21,247 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:46:20" (1/1) ... [2024-11-09 19:46:21,263 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 19:46:21,265 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-09 19:46:21,265 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-09 19:46:21,266 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-09 19:46:21,266 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:46:20" (1/1) ... [2024-11-09 19:46:21,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 19:46:21,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:46:21,301 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) [2024-11-09 19:46:21,308 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 [2024-11-09 19:46:21,351 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 19:46:21,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 19:46:21,351 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 19:46:21,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 19:46:21,412 INFO L256 CfgBuilder]: Building ICFG [2024-11-09 19:46:21,414 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 19:46:23,856 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L1501: havoc calculate_output_#t~ret7#1; [2024-11-09 19:46:24,017 INFO L? ?]: Removed 757 outVars from TransFormulas that were not future-live. [2024-11-09 19:46:24,017 INFO L307 CfgBuilder]: Performing block encoding [2024-11-09 19:46:24,040 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 19:46:24,040 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 19:46:24,041 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 07:46:24 BoogieIcfgContainer [2024-11-09 19:46:24,041 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-09 19:46:24,043 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 19:46:24,044 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 19:46:24,050 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 19:46:24,050 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 07:46:20" (1/3) ... [2024-11-09 19:46:24,051 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b8d610c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:46:24, skipping insertion in model container [2024-11-09 19:46:24,051 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:46:20" (2/3) ... [2024-11-09 19:46:24,051 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b8d610c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:46:24, skipping insertion in model container [2024-11-09 19:46:24,051 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 07:46:24" (3/3) ... [2024-11-09 19:46:24,053 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label14.c [2024-11-09 19:46:24,071 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 19:46:24,072 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 19:46:24,151 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 19:46:24,159 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;@43388bdc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 19:46:24,160 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 19:46:24,168 INFO L276 IsEmpty]: Start isEmpty. Operand has 399 states, 397 states have (on average 2.4886649874055418) internal successors, (988), 398 states have internal predecessors, (988), 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) [2024-11-09 19:46:24,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-09 19:46:24,176 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:46:24,176 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] [2024-11-09 19:46:24,177 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:46:24,182 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:46:24,182 INFO L85 PathProgramCache]: Analyzing trace with hash -308605722, now seen corresponding path program 1 times [2024-11-09 19:46:24,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:46:24,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358657175] [2024-11-09 19:46:24,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:46:24,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:46:24,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:46:24,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:46:24,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:46:24,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358657175] [2024-11-09 19:46:24,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358657175] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:46:24,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:46:24,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:46:24,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816088713] [2024-11-09 19:46:24,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:46:24,497 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:46:24,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:46:24,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:46:24,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:46:24,521 INFO L87 Difference]: Start difference. First operand has 399 states, 397 states have (on average 2.4886649874055418) internal successors, (988), 398 states have internal predecessors, (988), 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 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 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) [2024-11-09 19:46:26,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:46:26,587 INFO L93 Difference]: Finished difference Result 1128 states and 2895 transitions. [2024-11-09 19:46:26,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:46:26,589 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 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 20 [2024-11-09 19:46:26,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:46:26,603 INFO L225 Difference]: With dead ends: 1128 [2024-11-09 19:46:26,603 INFO L226 Difference]: Without dead ends: 665 [2024-11-09 19:46:26,607 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 [2024-11-09 19:46:26,610 INFO L432 NwaCegarLoop]: 217 mSDtfsCounter, 604 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 1578 mSolverCounterSat, 251 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 604 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 1829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 251 IncrementalHoareTripleChecker+Valid, 1578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-09 19:46:26,611 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [604 Valid, 227 Invalid, 1829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [251 Valid, 1578 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-09 19:46:26,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states. [2024-11-09 19:46:26,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 665. [2024-11-09 19:46:26,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 665 states, 664 states have (on average 2.3689759036144578) internal successors, (1573), 664 states have internal predecessors, (1573), 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) [2024-11-09 19:46:26,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 1573 transitions. [2024-11-09 19:46:26,701 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 1573 transitions. Word has length 20 [2024-11-09 19:46:26,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:46:26,702 INFO L471 AbstractCegarLoop]: Abstraction has 665 states and 1573 transitions. [2024-11-09 19:46:26,702 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 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) [2024-11-09 19:46:26,702 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 1573 transitions. [2024-11-09 19:46:26,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-11-09 19:46:26,705 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:46:26,705 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:46:26,705 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 19:46:26,705 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:46:26,706 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:46:26,706 INFO L85 PathProgramCache]: Analyzing trace with hash 931920252, now seen corresponding path program 1 times [2024-11-09 19:46:26,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:46:26,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74473111] [2024-11-09 19:46:26,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:46:26,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:46:26,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:46:26,931 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:46:26,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:46:26,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74473111] [2024-11-09 19:46:26,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74473111] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:46:26,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:46:26,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:46:26,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068413196] [2024-11-09 19:46:26,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:46:26,936 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:46:26,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:46:26,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:46:26,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:46:26,939 INFO L87 Difference]: Start difference. First operand 665 states and 1573 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 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) [2024-11-09 19:46:28,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:46:28,728 INFO L93 Difference]: Finished difference Result 1988 states and 4713 transitions. [2024-11-09 19:46:28,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:46:28,729 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 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 92 [2024-11-09 19:46:28,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:46:28,736 INFO L225 Difference]: With dead ends: 1988 [2024-11-09 19:46:28,736 INFO L226 Difference]: Without dead ends: 1325 [2024-11-09 19:46:28,738 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 [2024-11-09 19:46:28,740 INFO L432 NwaCegarLoop]: 196 mSDtfsCounter, 560 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1328 mSolverCounterSat, 390 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 560 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 1718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 390 IncrementalHoareTripleChecker+Valid, 1328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-09 19:46:28,740 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [560 Valid, 203 Invalid, 1718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [390 Valid, 1328 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-09 19:46:28,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1325 states. [2024-11-09 19:46:28,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1325 to 1325. [2024-11-09 19:46:28,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1325 states, 1324 states have (on average 2.1638972809667676) internal successors, (2865), 1324 states have internal predecessors, (2865), 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) [2024-11-09 19:46:28,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1325 states to 1325 states and 2865 transitions. [2024-11-09 19:46:28,792 INFO L78 Accepts]: Start accepts. Automaton has 1325 states and 2865 transitions. Word has length 92 [2024-11-09 19:46:28,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:46:28,793 INFO L471 AbstractCegarLoop]: Abstraction has 1325 states and 2865 transitions. [2024-11-09 19:46:28,793 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 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) [2024-11-09 19:46:28,794 INFO L276 IsEmpty]: Start isEmpty. Operand 1325 states and 2865 transitions. [2024-11-09 19:46:28,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-11-09 19:46:28,802 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:46:28,804 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-09 19:46:28,804 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 19:46:28,804 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:46:28,805 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:46:28,805 INFO L85 PathProgramCache]: Analyzing trace with hash 2029651078, now seen corresponding path program 1 times [2024-11-09 19:46:28,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:46:28,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235818116] [2024-11-09 19:46:28,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:46:28,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:46:28,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:46:29,139 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-11-09 19:46:29,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:46:29,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235818116] [2024-11-09 19:46:29,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235818116] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:46:29,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:46:29,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:46:29,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691790408] [2024-11-09 19:46:29,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:46:29,141 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:46:29,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:46:29,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:46:29,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:46:29,146 INFO L87 Difference]: Start difference. First operand 1325 states and 2865 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 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) [2024-11-09 19:46:31,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:46:31,017 INFO L93 Difference]: Finished difference Result 3308 states and 7255 transitions. [2024-11-09 19:46:31,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:46:31,017 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 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 177 [2024-11-09 19:46:31,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:46:31,029 INFO L225 Difference]: With dead ends: 3308 [2024-11-09 19:46:31,030 INFO L226 Difference]: Without dead ends: 1985 [2024-11-09 19:46:31,032 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 [2024-11-09 19:46:31,037 INFO L432 NwaCegarLoop]: 154 mSDtfsCounter, 621 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1335 mSolverCounterSat, 368 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 621 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 1703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 368 IncrementalHoareTripleChecker+Valid, 1335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-09 19:46:31,038 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [621 Valid, 159 Invalid, 1703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [368 Valid, 1335 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-09 19:46:31,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1985 states. [2024-11-09 19:46:31,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1985 to 1655. [2024-11-09 19:46:31,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1655 states, 1654 states have (on average 2.1632406287787185) internal successors, (3578), 1654 states have internal predecessors, (3578), 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) [2024-11-09 19:46:31,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1655 states to 1655 states and 3578 transitions. [2024-11-09 19:46:31,102 INFO L78 Accepts]: Start accepts. Automaton has 1655 states and 3578 transitions. Word has length 177 [2024-11-09 19:46:31,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:46:31,104 INFO L471 AbstractCegarLoop]: Abstraction has 1655 states and 3578 transitions. [2024-11-09 19:46:31,104 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 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) [2024-11-09 19:46:31,107 INFO L276 IsEmpty]: Start isEmpty. Operand 1655 states and 3578 transitions. [2024-11-09 19:46:31,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2024-11-09 19:46:31,114 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:46:31,114 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:46:31,115 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 19:46:31,115 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:46:31,115 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:46:31,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1513142518, now seen corresponding path program 1 times [2024-11-09 19:46:31,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:46:31,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380994316] [2024-11-09 19:46:31,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:46:31,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:46:31,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:46:31,489 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-09 19:46:31,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:46:31,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380994316] [2024-11-09 19:46:31,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380994316] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:46:31,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:46:31,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:46:31,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821064935] [2024-11-09 19:46:31,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:46:31,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:46:31,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:46:31,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:46:31,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:46:31,493 INFO L87 Difference]: Start difference. First operand 1655 states and 3578 transitions. Second operand has 3 states, 3 states have (on average 71.0) internal successors, (213), 2 states have internal predecessors, (213), 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) [2024-11-09 19:46:33,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:46:33,338 INFO L93 Difference]: Finished difference Result 4958 states and 10728 transitions. [2024-11-09 19:46:33,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:46:33,338 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 2 states have internal predecessors, (213), 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 229 [2024-11-09 19:46:33,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:46:33,351 INFO L225 Difference]: With dead ends: 4958 [2024-11-09 19:46:33,352 INFO L226 Difference]: Without dead ends: 3305 [2024-11-09 19:46:33,354 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 [2024-11-09 19:46:33,358 INFO L432 NwaCegarLoop]: 76 mSDtfsCounter, 514 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1458 mSolverCounterSat, 384 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 514 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 1842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 384 IncrementalHoareTripleChecker+Valid, 1458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-09 19:46:33,358 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [514 Valid, 83 Invalid, 1842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [384 Valid, 1458 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-09 19:46:33,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3305 states. [2024-11-09 19:46:33,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3305 to 2975. [2024-11-09 19:46:33,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2975 states, 2974 states have (on average 2.1203765971755213) internal successors, (6306), 2974 states have internal predecessors, (6306), 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) [2024-11-09 19:46:33,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2975 states to 2975 states and 6306 transitions. [2024-11-09 19:46:33,416 INFO L78 Accepts]: Start accepts. Automaton has 2975 states and 6306 transitions. Word has length 229 [2024-11-09 19:46:33,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:46:33,417 INFO L471 AbstractCegarLoop]: Abstraction has 2975 states and 6306 transitions. [2024-11-09 19:46:33,417 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 2 states have internal predecessors, (213), 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) [2024-11-09 19:46:33,417 INFO L276 IsEmpty]: Start isEmpty. Operand 2975 states and 6306 transitions. [2024-11-09 19:46:33,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2024-11-09 19:46:33,422 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:46:33,422 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:46:33,422 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 19:46:33,423 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:46:33,423 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:46:33,423 INFO L85 PathProgramCache]: Analyzing trace with hash -1219481208, now seen corresponding path program 1 times [2024-11-09 19:46:33,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:46:33,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276955576] [2024-11-09 19:46:33,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:46:33,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:46:33,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:46:33,650 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 194 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2024-11-09 19:46:33,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:46:33,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276955576] [2024-11-09 19:46:33,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276955576] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:46:33,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:46:33,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:46:33,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025612388] [2024-11-09 19:46:33,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:46:33,654 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:46:33,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:46:33,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:46:33,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:46:33,656 INFO L87 Difference]: Start difference. First operand 2975 states and 6306 transitions. Second operand has 3 states, 3 states have (on average 83.0) internal successors, (249), 2 states have internal predecessors, (249), 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) [2024-11-09 19:46:35,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:46:35,175 INFO L93 Difference]: Finished difference Result 7268 states and 15230 transitions. [2024-11-09 19:46:35,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:46:35,175 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 83.0) internal successors, (249), 2 states have internal predecessors, (249), 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 332 [2024-11-09 19:46:35,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:46:35,192 INFO L225 Difference]: With dead ends: 7268 [2024-11-09 19:46:35,192 INFO L226 Difference]: Without dead ends: 4295 [2024-11-09 19:46:35,196 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 [2024-11-09 19:46:35,197 INFO L432 NwaCegarLoop]: 81 mSDtfsCounter, 541 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1407 mSolverCounterSat, 263 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 541 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 1670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 263 IncrementalHoareTripleChecker+Valid, 1407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-09 19:46:35,197 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [541 Valid, 86 Invalid, 1670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [263 Valid, 1407 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-09 19:46:35,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4295 states. [2024-11-09 19:46:35,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4295 to 4295. [2024-11-09 19:46:35,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4295 states, 4294 states have (on average 2.0046576618537495) internal successors, (8608), 4294 states have internal predecessors, (8608), 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) [2024-11-09 19:46:35,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4295 states to 4295 states and 8608 transitions. [2024-11-09 19:46:35,275 INFO L78 Accepts]: Start accepts. Automaton has 4295 states and 8608 transitions. Word has length 332 [2024-11-09 19:46:35,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:46:35,275 INFO L471 AbstractCegarLoop]: Abstraction has 4295 states and 8608 transitions. [2024-11-09 19:46:35,276 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.0) internal successors, (249), 2 states have internal predecessors, (249), 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) [2024-11-09 19:46:35,276 INFO L276 IsEmpty]: Start isEmpty. Operand 4295 states and 8608 transitions. [2024-11-09 19:46:35,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2024-11-09 19:46:35,283 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:46:35,283 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:46:35,283 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 19:46:35,284 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:46:35,284 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:46:35,284 INFO L85 PathProgramCache]: Analyzing trace with hash -424279950, now seen corresponding path program 1 times [2024-11-09 19:46:35,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:46:35,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786658275] [2024-11-09 19:46:35,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:46:35,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:46:35,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:46:36,073 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 194 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2024-11-09 19:46:36,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:46:36,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786658275] [2024-11-09 19:46:36,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786658275] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:46:36,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:46:36,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:46:36,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224501795] [2024-11-09 19:46:36,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:46:36,075 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:46:36,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:46:36,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:46:36,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:46:36,076 INFO L87 Difference]: Start difference. First operand 4295 states and 8608 transitions. Second operand has 4 states, 4 states have (on average 90.75) internal successors, (363), 3 states have internal predecessors, (363), 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) [2024-11-09 19:46:38,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:46:38,217 INFO L93 Difference]: Finished difference Result 8918 states and 17818 transitions. [2024-11-09 19:46:38,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:46:38,221 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 90.75) internal successors, (363), 3 states have internal predecessors, (363), 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 446 [2024-11-09 19:46:38,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:46:38,242 INFO L225 Difference]: With dead ends: 8918 [2024-11-09 19:46:38,242 INFO L226 Difference]: Without dead ends: 4625 [2024-11-09 19:46:38,248 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 19:46:38,250 INFO L432 NwaCegarLoop]: 269 mSDtfsCounter, 389 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 2255 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 389 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 2260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 2255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-09 19:46:38,251 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [389 Valid, 328 Invalid, 2260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 2255 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-09 19:46:38,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4625 states. [2024-11-09 19:46:38,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4625 to 4625. [2024-11-09 19:46:38,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4625 states, 4624 states have (on average 1.9909169550173011) internal successors, (9206), 4624 states have internal predecessors, (9206), 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) [2024-11-09 19:46:38,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4625 states to 4625 states and 9206 transitions. [2024-11-09 19:46:38,343 INFO L78 Accepts]: Start accepts. Automaton has 4625 states and 9206 transitions. Word has length 446 [2024-11-09 19:46:38,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:46:38,345 INFO L471 AbstractCegarLoop]: Abstraction has 4625 states and 9206 transitions. [2024-11-09 19:46:38,346 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 90.75) internal successors, (363), 3 states have internal predecessors, (363), 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) [2024-11-09 19:46:38,346 INFO L276 IsEmpty]: Start isEmpty. Operand 4625 states and 9206 transitions. [2024-11-09 19:46:38,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 535 [2024-11-09 19:46:38,355 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:46:38,356 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:46:38,356 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 19:46:38,356 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:46:38,356 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:46:38,357 INFO L85 PathProgramCache]: Analyzing trace with hash 917612376, now seen corresponding path program 1 times [2024-11-09 19:46:38,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:46:38,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434065029] [2024-11-09 19:46:38,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:46:38,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:46:38,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:46:39,112 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 394 proven. 0 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2024-11-09 19:46:39,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:46:39,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434065029] [2024-11-09 19:46:39,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434065029] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:46:39,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:46:39,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 19:46:39,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829393388] [2024-11-09 19:46:39,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:46:39,114 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 19:46:39,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:46:39,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 19:46:39,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-09 19:46:39,116 INFO L87 Difference]: Start difference. First operand 4625 states and 9206 transitions. Second operand has 7 states, 7 states have (on average 57.142857142857146) internal successors, (400), 6 states have internal predecessors, (400), 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) [2024-11-09 19:46:41,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:46:41,229 INFO L93 Difference]: Finished difference Result 8781 states and 17401 transitions. [2024-11-09 19:46:41,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 19:46:41,230 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 57.142857142857146) internal successors, (400), 6 states have internal predecessors, (400), 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 534 [2024-11-09 19:46:41,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:46:41,250 INFO L225 Difference]: With dead ends: 8781 [2024-11-09 19:46:41,250 INFO L226 Difference]: Without dead ends: 4295 [2024-11-09 19:46:41,260 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-09 19:46:41,260 INFO L432 NwaCegarLoop]: 266 mSDtfsCounter, 553 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 3061 mSolverCounterSat, 334 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 553 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 3395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 334 IncrementalHoareTripleChecker+Valid, 3061 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-09 19:46:41,261 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [553 Valid, 308 Invalid, 3395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [334 Valid, 3061 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-09 19:46:41,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4295 states. [2024-11-09 19:46:41,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4295 to 4295. [2024-11-09 19:46:41,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4295 states, 4294 states have (on average 1.8700512342803912) internal successors, (8030), 4294 states have internal predecessors, (8030), 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) [2024-11-09 19:46:41,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4295 states to 4295 states and 8030 transitions. [2024-11-09 19:46:41,331 INFO L78 Accepts]: Start accepts. Automaton has 4295 states and 8030 transitions. Word has length 534 [2024-11-09 19:46:41,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:46:41,331 INFO L471 AbstractCegarLoop]: Abstraction has 4295 states and 8030 transitions. [2024-11-09 19:46:41,331 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 57.142857142857146) internal successors, (400), 6 states have internal predecessors, (400), 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) [2024-11-09 19:46:41,331 INFO L276 IsEmpty]: Start isEmpty. Operand 4295 states and 8030 transitions. [2024-11-09 19:46:41,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 563 [2024-11-09 19:46:41,347 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:46:41,348 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:46:41,348 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 19:46:41,348 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:46:41,348 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:46:41,349 INFO L85 PathProgramCache]: Analyzing trace with hash -2084554364, now seen corresponding path program 1 times [2024-11-09 19:46:41,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:46:41,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689384056] [2024-11-09 19:46:41,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:46:41,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:46:41,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:46:41,780 INFO L134 CoverageAnalysis]: Checked inductivity of 618 backedges. 476 proven. 0 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2024-11-09 19:46:41,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:46:41,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689384056] [2024-11-09 19:46:41,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689384056] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:46:41,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:46:41,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:46:41,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735421203] [2024-11-09 19:46:41,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:46:41,783 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:46:41,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:46:41,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:46:41,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:46:41,784 INFO L87 Difference]: Start difference. First operand 4295 states and 8030 transitions. Second operand has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 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) [2024-11-09 19:46:43,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:46:43,036 INFO L93 Difference]: Finished difference Result 10568 states and 19858 transitions. [2024-11-09 19:46:43,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:46:43,037 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 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 562 [2024-11-09 19:46:43,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:46:43,054 INFO L225 Difference]: With dead ends: 10568 [2024-11-09 19:46:43,054 INFO L226 Difference]: Without dead ends: 6605 [2024-11-09 19:46:43,059 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 [2024-11-09 19:46:43,060 INFO L432 NwaCegarLoop]: 693 mSDtfsCounter, 481 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 1287 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 481 SdHoareTripleChecker+Valid, 701 SdHoareTripleChecker+Invalid, 1388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 1287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-09 19:46:43,060 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [481 Valid, 701 Invalid, 1388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 1287 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-09 19:46:43,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6605 states. [2024-11-09 19:46:43,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6605 to 6275. [2024-11-09 19:46:43,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6275 states, 6274 states have (on average 1.8532036978004462) internal successors, (11627), 6274 states have internal predecessors, (11627), 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) [2024-11-09 19:46:43,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6275 states to 6275 states and 11627 transitions. [2024-11-09 19:46:43,225 INFO L78 Accepts]: Start accepts. Automaton has 6275 states and 11627 transitions. Word has length 562 [2024-11-09 19:46:43,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:46:43,226 INFO L471 AbstractCegarLoop]: Abstraction has 6275 states and 11627 transitions. [2024-11-09 19:46:43,226 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 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) [2024-11-09 19:46:43,226 INFO L276 IsEmpty]: Start isEmpty. Operand 6275 states and 11627 transitions. [2024-11-09 19:46:43,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 667 [2024-11-09 19:46:43,245 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:46:43,245 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:46:43,246 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 19:46:43,246 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:46:43,246 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:46:43,247 INFO L85 PathProgramCache]: Analyzing trace with hash -2042627650, now seen corresponding path program 1 times [2024-11-09 19:46:43,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:46:43,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187560636] [2024-11-09 19:46:43,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:46:43,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:46:43,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:46:43,730 INFO L134 CoverageAnalysis]: Checked inductivity of 833 backedges. 690 proven. 0 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2024-11-09 19:46:43,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:46:43,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187560636] [2024-11-09 19:46:43,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187560636] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:46:43,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:46:43,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:46:43,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250300199] [2024-11-09 19:46:43,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:46:43,731 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:46:43,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:46:43,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:46:43,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:46:43,734 INFO L87 Difference]: Start difference. First operand 6275 states and 11627 transitions. Second operand has 3 states, 3 states have (on average 180.66666666666666) internal successors, (542), 3 states have internal predecessors, (542), 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) [2024-11-09 19:46:44,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:46:44,957 INFO L93 Difference]: Finished difference Result 14198 states and 26435 transitions. [2024-11-09 19:46:44,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:46:44,958 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 180.66666666666666) internal successors, (542), 3 states have internal predecessors, (542), 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 666 [2024-11-09 19:46:44,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:46:44,976 INFO L225 Difference]: With dead ends: 14198 [2024-11-09 19:46:44,976 INFO L226 Difference]: Without dead ends: 8255 [2024-11-09 19:46:44,982 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 [2024-11-09 19:46:44,983 INFO L432 NwaCegarLoop]: 679 mSDtfsCounter, 438 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 1292 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 438 SdHoareTripleChecker+Valid, 687 SdHoareTripleChecker+Invalid, 1386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 1292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-09 19:46:44,983 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [438 Valid, 687 Invalid, 1386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 1292 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-09 19:46:44,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8255 states. [2024-11-09 19:46:45,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8255 to 7925. [2024-11-09 19:46:45,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7925 states, 7924 states have (on average 1.8490661282180716) internal successors, (14652), 7924 states have internal predecessors, (14652), 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) [2024-11-09 19:46:45,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7925 states to 7925 states and 14652 transitions. [2024-11-09 19:46:45,087 INFO L78 Accepts]: Start accepts. Automaton has 7925 states and 14652 transitions. Word has length 666 [2024-11-09 19:46:45,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:46:45,088 INFO L471 AbstractCegarLoop]: Abstraction has 7925 states and 14652 transitions. [2024-11-09 19:46:45,088 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 180.66666666666666) internal successors, (542), 3 states have internal predecessors, (542), 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) [2024-11-09 19:46:45,088 INFO L276 IsEmpty]: Start isEmpty. Operand 7925 states and 14652 transitions. [2024-11-09 19:46:45,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 898 [2024-11-09 19:46:45,103 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:46:45,104 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:46:45,105 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 19:46:45,105 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:46:45,109 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:46:45,109 INFO L85 PathProgramCache]: Analyzing trace with hash -1559883610, now seen corresponding path program 1 times [2024-11-09 19:46:45,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:46:45,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693318768] [2024-11-09 19:46:45,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:46:45,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:46:45,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:46:45,885 INFO L134 CoverageAnalysis]: Checked inductivity of 1274 backedges. 648 proven. 0 refuted. 0 times theorem prover too weak. 626 trivial. 0 not checked. [2024-11-09 19:46:45,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:46:45,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693318768] [2024-11-09 19:46:45,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693318768] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:46:45,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:46:45,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:46:45,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378214959] [2024-11-09 19:46:45,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:46:45,887 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:46:45,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:46:45,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:46:45,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:46:45,890 INFO L87 Difference]: Start difference. First operand 7925 states and 14652 transitions. Second operand has 3 states, 3 states have (on average 154.66666666666666) internal successors, (464), 3 states have internal predecessors, (464), 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) [2024-11-09 19:46:47,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:46:47,133 INFO L93 Difference]: Finished difference Result 19808 states and 36714 transitions. [2024-11-09 19:46:47,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:46:47,133 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 154.66666666666666) internal successors, (464), 3 states have internal predecessors, (464), 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 897 [2024-11-09 19:46:47,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:46:47,155 INFO L225 Difference]: With dead ends: 19808 [2024-11-09 19:46:47,156 INFO L226 Difference]: Without dead ends: 10895 [2024-11-09 19:46:47,162 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 [2024-11-09 19:46:47,163 INFO L432 NwaCegarLoop]: 688 mSDtfsCounter, 408 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1271 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 408 SdHoareTripleChecker+Valid, 694 SdHoareTripleChecker+Invalid, 1364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 1271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-09 19:46:47,164 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [408 Valid, 694 Invalid, 1364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 1271 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-09 19:46:47,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10895 states. [2024-11-09 19:46:47,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10895 to 10565. [2024-11-09 19:46:47,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10565 states, 10564 states have (on average 1.8390761075350246) internal successors, (19428), 10564 states have internal predecessors, (19428), 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) [2024-11-09 19:46:47,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10565 states to 10565 states and 19428 transitions. [2024-11-09 19:46:47,303 INFO L78 Accepts]: Start accepts. Automaton has 10565 states and 19428 transitions. Word has length 897 [2024-11-09 19:46:47,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:46:47,304 INFO L471 AbstractCegarLoop]: Abstraction has 10565 states and 19428 transitions. [2024-11-09 19:46:47,304 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 154.66666666666666) internal successors, (464), 3 states have internal predecessors, (464), 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) [2024-11-09 19:46:47,304 INFO L276 IsEmpty]: Start isEmpty. Operand 10565 states and 19428 transitions. [2024-11-09 19:46:47,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 936 [2024-11-09 19:46:47,319 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:46:47,320 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:46:47,320 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-09 19:46:47,320 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:46:47,321 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:46:47,321 INFO L85 PathProgramCache]: Analyzing trace with hash -770460750, now seen corresponding path program 1 times [2024-11-09 19:46:47,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:46:47,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12690388] [2024-11-09 19:46:47,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:46:47,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:46:47,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:46:48,130 INFO L134 CoverageAnalysis]: Checked inductivity of 1414 backedges. 1023 proven. 0 refuted. 0 times theorem prover too weak. 391 trivial. 0 not checked. [2024-11-09 19:46:48,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:46:48,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12690388] [2024-11-09 19:46:48,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12690388] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:46:48,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:46:48,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:46:48,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766323965] [2024-11-09 19:46:48,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:46:48,132 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:46:48,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:46:48,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:46:48,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:46:48,134 INFO L87 Difference]: Start difference. First operand 10565 states and 19428 transitions. Second operand has 3 states, 3 states have (on average 204.0) internal successors, (612), 3 states have internal predecessors, (612), 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) [2024-11-09 19:46:49,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:46:49,263 INFO L93 Difference]: Finished difference Result 24098 states and 44453 transitions. [2024-11-09 19:46:49,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:46:49,263 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 204.0) internal successors, (612), 3 states have internal predecessors, (612), 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 935 [2024-11-09 19:46:49,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:46:49,291 INFO L225 Difference]: With dead ends: 24098 [2024-11-09 19:46:49,291 INFO L226 Difference]: Without dead ends: 13865 [2024-11-09 19:46:49,303 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 [2024-11-09 19:46:49,304 INFO L432 NwaCegarLoop]: 694 mSDtfsCounter, 484 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1280 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 484 SdHoareTripleChecker+Valid, 700 SdHoareTripleChecker+Invalid, 1379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-09 19:46:49,304 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [484 Valid, 700 Invalid, 1379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1280 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-09 19:46:49,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13865 states. [2024-11-09 19:46:49,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13865 to 13205. [2024-11-09 19:46:49,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13205 states, 13204 states have (on average 1.8339897000908816) internal successors, (24216), 13204 states have internal predecessors, (24216), 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) [2024-11-09 19:46:49,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13205 states to 13205 states and 24216 transitions. [2024-11-09 19:46:49,570 INFO L78 Accepts]: Start accepts. Automaton has 13205 states and 24216 transitions. Word has length 935 [2024-11-09 19:46:49,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:46:49,571 INFO L471 AbstractCegarLoop]: Abstraction has 13205 states and 24216 transitions. [2024-11-09 19:46:49,571 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 204.0) internal successors, (612), 3 states have internal predecessors, (612), 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) [2024-11-09 19:46:49,572 INFO L276 IsEmpty]: Start isEmpty. Operand 13205 states and 24216 transitions. [2024-11-09 19:46:49,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 937 [2024-11-09 19:46:49,588 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:46:49,588 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:46:49,588 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-09 19:46:49,589 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:46:49,589 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:46:49,589 INFO L85 PathProgramCache]: Analyzing trace with hash 763203018, now seen corresponding path program 1 times [2024-11-09 19:46:49,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:46:49,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759809382] [2024-11-09 19:46:49,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:46:49,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:46:49,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:46:50,316 INFO L134 CoverageAnalysis]: Checked inductivity of 1418 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 1334 trivial. 0 not checked. [2024-11-09 19:46:50,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:46:50,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759809382] [2024-11-09 19:46:50,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759809382] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:46:50,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:46:50,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:46:50,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408915969] [2024-11-09 19:46:50,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:46:50,318 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:46:50,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:46:50,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:46:50,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:46:50,319 INFO L87 Difference]: Start difference. First operand 13205 states and 24216 transitions. Second operand has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 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) [2024-11-09 19:46:51,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:46:51,480 INFO L93 Difference]: Finished difference Result 26408 states and 48429 transitions. [2024-11-09 19:46:51,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:46:51,481 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 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 936 [2024-11-09 19:46:51,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:46:51,509 INFO L225 Difference]: With dead ends: 26408 [2024-11-09 19:46:51,509 INFO L226 Difference]: Without dead ends: 13205 [2024-11-09 19:46:51,522 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 [2024-11-09 19:46:51,524 INFO L432 NwaCegarLoop]: 685 mSDtfsCounter, 579 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 1288 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 579 SdHoareTripleChecker+Valid, 693 SdHoareTripleChecker+Invalid, 1377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-09 19:46:51,524 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [579 Valid, 693 Invalid, 1377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1288 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-09 19:46:51,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13205 states. [2024-11-09 19:46:51,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13205 to 12545. [2024-11-09 19:46:51,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12545 states, 12544 states have (on average 1.8191964285714286) internal successors, (22820), 12544 states have internal predecessors, (22820), 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) [2024-11-09 19:46:51,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12545 states to 12545 states and 22820 transitions. [2024-11-09 19:46:51,688 INFO L78 Accepts]: Start accepts. Automaton has 12545 states and 22820 transitions. Word has length 936 [2024-11-09 19:46:51,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:46:51,689 INFO L471 AbstractCegarLoop]: Abstraction has 12545 states and 22820 transitions. [2024-11-09 19:46:51,689 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 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) [2024-11-09 19:46:51,690 INFO L276 IsEmpty]: Start isEmpty. Operand 12545 states and 22820 transitions. [2024-11-09 19:46:51,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1010 [2024-11-09 19:46:51,707 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:46:51,708 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:46:51,708 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-09 19:46:51,709 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:46:51,709 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:46:51,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1003935545, now seen corresponding path program 1 times [2024-11-09 19:46:51,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:46:51,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373811339] [2024-11-09 19:46:51,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:46:51,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:46:51,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:46:53,453 INFO L134 CoverageAnalysis]: Checked inductivity of 1418 backedges. 476 proven. 679 refuted. 0 times theorem prover too weak. 263 trivial. 0 not checked. [2024-11-09 19:46:53,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:46:53,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373811339] [2024-11-09 19:46:53,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373811339] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:46:53,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [458874111] [2024-11-09 19:46:53,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:46:53,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:46:53,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:46:53,456 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) [2024-11-09 19:46:53,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 19:46:53,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:46:53,799 INFO L255 TraceCheckSpWp]: Trace formula consists of 1180 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 19:46:53,822 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:46:54,276 INFO L134 CoverageAnalysis]: Checked inductivity of 1418 backedges. 735 proven. 0 refuted. 0 times theorem prover too weak. 683 trivial. 0 not checked. [2024-11-09 19:46:54,276 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 19:46:54,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [458874111] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:46:54,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 19:46:54,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-09 19:46:54,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330018374] [2024-11-09 19:46:54,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:46:54,278 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:46:54,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:46:54,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:46:54,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 19:46:54,280 INFO L87 Difference]: Start difference. First operand 12545 states and 22820 transitions. Second operand has 3 states, 3 states have (on average 191.33333333333334) internal successors, (574), 3 states have internal predecessors, (574), 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) [2024-11-09 19:46:55,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:46:55,399 INFO L93 Difference]: Finished difference Result 24758 states and 45044 transitions. [2024-11-09 19:46:55,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:46:55,400 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 191.33333333333334) internal successors, (574), 3 states have internal predecessors, (574), 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 1009 [2024-11-09 19:46:55,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:46:55,422 INFO L225 Difference]: With dead ends: 24758 [2024-11-09 19:46:55,422 INFO L226 Difference]: Without dead ends: 12545 [2024-11-09 19:46:55,432 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1013 GetRequests, 1009 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 19:46:55,433 INFO L432 NwaCegarLoop]: 636 mSDtfsCounter, 307 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 1296 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 644 SdHoareTripleChecker+Invalid, 1314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-09 19:46:55,434 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [307 Valid, 644 Invalid, 1314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1296 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-09 19:46:55,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12545 states. [2024-11-09 19:46:55,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12545 to 12545. [2024-11-09 19:46:55,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12545 states, 12544 states have (on average 1.8162468112244898) internal successors, (22783), 12544 states have internal predecessors, (22783), 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) [2024-11-09 19:46:55,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12545 states to 12545 states and 22783 transitions. [2024-11-09 19:46:55,576 INFO L78 Accepts]: Start accepts. Automaton has 12545 states and 22783 transitions. Word has length 1009 [2024-11-09 19:46:55,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:46:55,578 INFO L471 AbstractCegarLoop]: Abstraction has 12545 states and 22783 transitions. [2024-11-09 19:46:55,578 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 191.33333333333334) internal successors, (574), 3 states have internal predecessors, (574), 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) [2024-11-09 19:46:55,578 INFO L276 IsEmpty]: Start isEmpty. Operand 12545 states and 22783 transitions. [2024-11-09 19:46:55,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1185 [2024-11-09 19:46:55,605 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:46:55,606 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:46:55,626 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-09 19:46:55,806 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-09 19:46:55,807 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:46:55,808 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:46:55,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1776033884, now seen corresponding path program 1 times [2024-11-09 19:46:55,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:46:55,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284276376] [2024-11-09 19:46:55,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:46:55,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:46:55,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:46:56,980 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 1488 proven. 0 refuted. 0 times theorem prover too weak. 1324 trivial. 0 not checked. [2024-11-09 19:46:56,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:46:56,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284276376] [2024-11-09 19:46:56,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284276376] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:46:56,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:46:56,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:46:56,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432885408] [2024-11-09 19:46:56,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:46:56,982 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:46:56,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:46:56,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:46:56,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:46:56,983 INFO L87 Difference]: Start difference. First operand 12545 states and 22783 transitions. Second operand has 3 states, 3 states have (on average 185.66666666666666) internal successors, (557), 3 states have internal predecessors, (557), 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) [2024-11-09 19:46:58,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:46:58,085 INFO L93 Difference]: Finished difference Result 25418 states and 46165 transitions. [2024-11-09 19:46:58,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:46:58,086 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 185.66666666666666) internal successors, (557), 3 states have internal predecessors, (557), 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 1184 [2024-11-09 19:46:58,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:46:58,108 INFO L225 Difference]: With dead ends: 25418 [2024-11-09 19:46:58,109 INFO L226 Difference]: Without dead ends: 13205 [2024-11-09 19:46:58,118 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 [2024-11-09 19:46:58,119 INFO L432 NwaCegarLoop]: 698 mSDtfsCounter, 486 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 1279 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 486 SdHoareTripleChecker+Valid, 706 SdHoareTripleChecker+Invalid, 1285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-09 19:46:58,119 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [486 Valid, 706 Invalid, 1285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1279 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-09 19:46:58,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13205 states. [2024-11-09 19:46:58,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13205 to 13205. [2024-11-09 19:46:58,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13205 states, 13204 states have (on average 1.8155104513783702) internal successors, (23972), 13204 states have internal predecessors, (23972), 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) [2024-11-09 19:46:58,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13205 states to 13205 states and 23972 transitions. [2024-11-09 19:46:58,325 INFO L78 Accepts]: Start accepts. Automaton has 13205 states and 23972 transitions. Word has length 1184 [2024-11-09 19:46:58,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:46:58,326 INFO L471 AbstractCegarLoop]: Abstraction has 13205 states and 23972 transitions. [2024-11-09 19:46:58,326 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 185.66666666666666) internal successors, (557), 3 states have internal predecessors, (557), 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) [2024-11-09 19:46:58,327 INFO L276 IsEmpty]: Start isEmpty. Operand 13205 states and 23972 transitions. [2024-11-09 19:46:58,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1239 [2024-11-09 19:46:58,348 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:46:58,348 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:46:58,349 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-09 19:46:58,349 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:46:58,349 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:46:58,350 INFO L85 PathProgramCache]: Analyzing trace with hash 1859952450, now seen corresponding path program 1 times [2024-11-09 19:46:58,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:46:58,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606561823] [2024-11-09 19:46:58,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:46:58,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:46:58,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:46:59,209 INFO L134 CoverageAnalysis]: Checked inductivity of 2816 backedges. 988 proven. 0 refuted. 0 times theorem prover too weak. 1828 trivial. 0 not checked. [2024-11-09 19:46:59,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:46:59,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606561823] [2024-11-09 19:46:59,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606561823] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:46:59,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:46:59,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:46:59,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859637158] [2024-11-09 19:46:59,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:46:59,211 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:46:59,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:46:59,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:46:59,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:46:59,215 INFO L87 Difference]: Start difference. First operand 13205 states and 23972 transitions. Second operand has 3 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 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) [2024-11-09 19:47:00,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:47:00,441 INFO L93 Difference]: Finished difference Result 29048 states and 52771 transitions. [2024-11-09 19:47:00,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:47:00,442 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 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 1238 [2024-11-09 19:47:00,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:47:00,464 INFO L225 Difference]: With dead ends: 29048 [2024-11-09 19:47:00,464 INFO L226 Difference]: Without dead ends: 14195 [2024-11-09 19:47:00,477 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 [2024-11-09 19:47:00,478 INFO L432 NwaCegarLoop]: 672 mSDtfsCounter, 409 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 1281 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 409 SdHoareTripleChecker+Valid, 680 SdHoareTripleChecker+Invalid, 1344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 1281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-09 19:47:00,478 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [409 Valid, 680 Invalid, 1344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 1281 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-09 19:47:00,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14195 states. [2024-11-09 19:47:00,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14195 to 13535. [2024-11-09 19:47:00,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13535 states, 13534 states have (on average 1.8136544997783361) internal successors, (24546), 13534 states have internal predecessors, (24546), 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) [2024-11-09 19:47:00,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13535 states to 13535 states and 24546 transitions. [2024-11-09 19:47:00,712 INFO L78 Accepts]: Start accepts. Automaton has 13535 states and 24546 transitions. Word has length 1238 [2024-11-09 19:47:00,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:47:00,713 INFO L471 AbstractCegarLoop]: Abstraction has 13535 states and 24546 transitions. [2024-11-09 19:47:00,714 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 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) [2024-11-09 19:47:00,714 INFO L276 IsEmpty]: Start isEmpty. Operand 13535 states and 24546 transitions. [2024-11-09 19:47:00,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1332 [2024-11-09 19:47:00,753 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:47:00,754 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2024-11-09 19:47:00,754 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-09 19:47:00,754 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:47:00,755 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:47:00,755 INFO L85 PathProgramCache]: Analyzing trace with hash 751681661, now seen corresponding path program 1 times [2024-11-09 19:47:00,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:47:00,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020280241] [2024-11-09 19:47:00,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:47:00,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:47:00,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:47:01,472 INFO L134 CoverageAnalysis]: Checked inductivity of 2968 backedges. 118 proven. 0 refuted. 0 times theorem prover too weak. 2850 trivial. 0 not checked. [2024-11-09 19:47:01,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:47:01,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020280241] [2024-11-09 19:47:01,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020280241] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:47:01,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:47:01,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:47:01,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344046464] [2024-11-09 19:47:01,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:47:01,474 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:47:01,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:47:01,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:47:01,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:47:01,475 INFO L87 Difference]: Start difference. First operand 13535 states and 24546 transitions. Second operand has 3 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 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) [2024-11-09 19:47:02,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:47:02,553 INFO L93 Difference]: Finished difference Result 28058 states and 50882 transitions. [2024-11-09 19:47:02,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:47:02,554 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 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 1331 [2024-11-09 19:47:02,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:47:02,566 INFO L225 Difference]: With dead ends: 28058 [2024-11-09 19:47:02,566 INFO L226 Difference]: Without dead ends: 13205 [2024-11-09 19:47:02,574 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 [2024-11-09 19:47:02,575 INFO L432 NwaCegarLoop]: 675 mSDtfsCounter, 580 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 1272 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 580 SdHoareTripleChecker+Valid, 683 SdHoareTripleChecker+Invalid, 1312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-09 19:47:02,575 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [580 Valid, 683 Invalid, 1312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1272 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-09 19:47:02,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13205 states. [2024-11-09 19:47:02,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13205 to 11885. [2024-11-09 19:47:02,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11885 states, 11884 states have (on average 1.809660047122181) internal successors, (21506), 11884 states have internal predecessors, (21506), 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) [2024-11-09 19:47:02,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11885 states to 11885 states and 21506 transitions. [2024-11-09 19:47:02,704 INFO L78 Accepts]: Start accepts. Automaton has 11885 states and 21506 transitions. Word has length 1331 [2024-11-09 19:47:02,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:47:02,705 INFO L471 AbstractCegarLoop]: Abstraction has 11885 states and 21506 transitions. [2024-11-09 19:47:02,705 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 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) [2024-11-09 19:47:02,705 INFO L276 IsEmpty]: Start isEmpty. Operand 11885 states and 21506 transitions. [2024-11-09 19:47:02,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1780 [2024-11-09 19:47:02,732 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:47:02,733 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:47:02,733 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-09 19:47:02,733 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:47:02,733 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:47:02,734 INFO L85 PathProgramCache]: Analyzing trace with hash 482880198, now seen corresponding path program 1 times [2024-11-09 19:47:02,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:47:02,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056554147] [2024-11-09 19:47:02,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:47:02,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:47:02,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:47:04,467 INFO L134 CoverageAnalysis]: Checked inductivity of 5395 backedges. 2987 proven. 67 refuted. 0 times theorem prover too weak. 2341 trivial. 0 not checked. [2024-11-09 19:47:04,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:47:04,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056554147] [2024-11-09 19:47:04,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056554147] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:47:04,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [454091802] [2024-11-09 19:47:04,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:47:04,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:47:04,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:47:04,470 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) [2024-11-09 19:47:04,471 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 19:47:04,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:47:04,884 INFO L255 TraceCheckSpWp]: Trace formula consists of 2039 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 19:47:04,904 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:47:07,202 INFO L134 CoverageAnalysis]: Checked inductivity of 5395 backedges. 2392 proven. 201 refuted. 0 times theorem prover too weak. 2802 trivial. 0 not checked. [2024-11-09 19:47:07,202 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 19:47:11,859 INFO L134 CoverageAnalysis]: Checked inductivity of 5395 backedges. 2392 proven. 201 refuted. 0 times theorem prover too weak. 2802 trivial. 0 not checked. [2024-11-09 19:47:11,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [454091802] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 19:47:11,859 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 19:47:11,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 8 [2024-11-09 19:47:11,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297057234] [2024-11-09 19:47:11,861 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 19:47:11,863 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-09 19:47:11,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:47:11,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-09 19:47:11,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-11-09 19:47:11,865 INFO L87 Difference]: Start difference. First operand 11885 states and 21506 transitions. Second operand has 9 states, 9 states have (on average 199.55555555555554) internal successors, (1796), 8 states have internal predecessors, (1796), 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) [2024-11-09 19:47:19,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:47:19,231 INFO L93 Difference]: Finished difference Result 34328 states and 62140 transitions. [2024-11-09 19:47:19,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-09 19:47:19,232 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 199.55555555555554) internal successors, (1796), 8 states have internal predecessors, (1796), 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 1779 [2024-11-09 19:47:19,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:47:19,254 INFO L225 Difference]: With dead ends: 34328 [2024-11-09 19:47:19,254 INFO L226 Difference]: Without dead ends: 22775 [2024-11-09 19:47:19,265 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3568 GetRequests, 3553 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2024-11-09 19:47:19,266 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 5346 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 11147 mSolverCounterSat, 241 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5346 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 11388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 241 IncrementalHoareTripleChecker+Valid, 11147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2024-11-09 19:47:19,266 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5346 Valid, 109 Invalid, 11388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [241 Valid, 11147 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2024-11-09 19:47:19,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22775 states. [2024-11-09 19:47:19,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22775 to 16835. [2024-11-09 19:47:19,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16835 states, 16834 states have (on average 1.8093144825947487) internal successors, (30458), 16834 states have internal predecessors, (30458), 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) [2024-11-09 19:47:19,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16835 states to 16835 states and 30458 transitions. [2024-11-09 19:47:19,511 INFO L78 Accepts]: Start accepts. Automaton has 16835 states and 30458 transitions. Word has length 1779 [2024-11-09 19:47:19,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:47:19,511 INFO L471 AbstractCegarLoop]: Abstraction has 16835 states and 30458 transitions. [2024-11-09 19:47:19,512 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 199.55555555555554) internal successors, (1796), 8 states have internal predecessors, (1796), 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) [2024-11-09 19:47:19,512 INFO L276 IsEmpty]: Start isEmpty. Operand 16835 states and 30458 transitions. [2024-11-09 19:47:19,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1811 [2024-11-09 19:47:19,536 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:47:19,536 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:47:19,551 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 19:47:19,737 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,SelfDestructingSolverStorable16 [2024-11-09 19:47:19,737 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:47:19,738 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:47:19,738 INFO L85 PathProgramCache]: Analyzing trace with hash -1699331678, now seen corresponding path program 1 times [2024-11-09 19:47:19,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:47:19,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118786103] [2024-11-09 19:47:19,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:47:19,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:47:19,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:47:22,233 INFO L134 CoverageAnalysis]: Checked inductivity of 6089 backedges. 2366 proven. 156 refuted. 0 times theorem prover too weak. 3567 trivial. 0 not checked. [2024-11-09 19:47:22,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:47:22,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118786103] [2024-11-09 19:47:22,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118786103] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:47:22,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [157069847] [2024-11-09 19:47:22,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:47:22,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:47:22,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:47:22,236 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) [2024-11-09 19:47:22,237 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 19:47:22,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:47:22,639 INFO L255 TraceCheckSpWp]: Trace formula consists of 2092 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 19:47:22,661 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:47:23,288 INFO L134 CoverageAnalysis]: Checked inductivity of 6089 backedges. 2522 proven. 0 refuted. 0 times theorem prover too weak. 3567 trivial. 0 not checked. [2024-11-09 19:47:23,289 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 19:47:23,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [157069847] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:47:23,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 19:47:23,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-11-09 19:47:23,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205581332] [2024-11-09 19:47:23,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:47:23,290 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:47:23,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:47:23,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:47:23,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-09 19:47:23,292 INFO L87 Difference]: Start difference. First operand 16835 states and 30458 transitions. Second operand has 3 states, 3 states have (on average 245.0) internal successors, (735), 3 states have internal predecessors, (735), 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) [2024-11-09 19:47:24,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:47:24,470 INFO L93 Difference]: Finished difference Result 34988 states and 63316 transitions. [2024-11-09 19:47:24,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:47:24,470 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 245.0) internal successors, (735), 3 states have internal predecessors, (735), 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 1810 [2024-11-09 19:47:24,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:47:24,489 INFO L225 Difference]: With dead ends: 34988 [2024-11-09 19:47:24,489 INFO L226 Difference]: Without dead ends: 18485 [2024-11-09 19:47:24,497 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1814 GetRequests, 1809 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-09 19:47:24,498 INFO L432 NwaCegarLoop]: 83 mSDtfsCounter, 435 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1271 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 435 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 1296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-09 19:47:24,498 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [435 Valid, 90 Invalid, 1296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1271 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-09 19:47:24,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18485 states. [2024-11-09 19:47:24,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18485 to 17165. [2024-11-09 19:47:24,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17165 states, 17164 states have (on average 1.808552784898625) internal successors, (31042), 17164 states have internal predecessors, (31042), 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) [2024-11-09 19:47:24,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17165 states to 17165 states and 31042 transitions. [2024-11-09 19:47:24,643 INFO L78 Accepts]: Start accepts. Automaton has 17165 states and 31042 transitions. Word has length 1810 [2024-11-09 19:47:24,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:47:24,644 INFO L471 AbstractCegarLoop]: Abstraction has 17165 states and 31042 transitions. [2024-11-09 19:47:24,644 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 245.0) internal successors, (735), 3 states have internal predecessors, (735), 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) [2024-11-09 19:47:24,644 INFO L276 IsEmpty]: Start isEmpty. Operand 17165 states and 31042 transitions. [2024-11-09 19:47:24,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2007 [2024-11-09 19:47:24,676 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:47:24,677 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:47:24,691 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-09 19:47:24,878 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-09 19:47:24,878 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:47:24,879 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:47:24,879 INFO L85 PathProgramCache]: Analyzing trace with hash 2040866062, now seen corresponding path program 1 times [2024-11-09 19:47:24,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:47:24,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928605736] [2024-11-09 19:47:24,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:47:24,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:47:25,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:47:25,816 INFO L134 CoverageAnalysis]: Checked inductivity of 8031 backedges. 1777 proven. 0 refuted. 0 times theorem prover too weak. 6254 trivial. 0 not checked. [2024-11-09 19:47:25,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:47:25,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928605736] [2024-11-09 19:47:25,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928605736] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:47:25,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:47:25,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:47:25,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791892304] [2024-11-09 19:47:25,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:47:25,818 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:47:25,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:47:25,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:47:25,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:47:25,819 INFO L87 Difference]: Start difference. First operand 17165 states and 31042 transitions. Second operand has 3 states, 3 states have (on average 165.0) internal successors, (495), 3 states have internal predecessors, (495), 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) [2024-11-09 19:47:26,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:47:26,915 INFO L93 Difference]: Finished difference Result 35318 states and 63880 transitions. [2024-11-09 19:47:26,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:47:26,916 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 165.0) internal successors, (495), 3 states have internal predecessors, (495), 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 2006 [2024-11-09 19:47:26,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:47:26,937 INFO L225 Difference]: With dead ends: 35318 [2024-11-09 19:47:26,938 INFO L226 Difference]: Without dead ends: 18485 [2024-11-09 19:47:26,946 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 [2024-11-09 19:47:26,947 INFO L432 NwaCegarLoop]: 671 mSDtfsCounter, 400 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 1277 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 400 SdHoareTripleChecker+Valid, 679 SdHoareTripleChecker+Invalid, 1312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-09 19:47:26,947 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [400 Valid, 679 Invalid, 1312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1277 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-09 19:47:26,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18485 states. [2024-11-09 19:47:27,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18485 to 18155. [2024-11-09 19:47:27,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18155 states, 18154 states have (on average 1.8080312878704419) internal successors, (32823), 18154 states have internal predecessors, (32823), 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) [2024-11-09 19:47:27,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18155 states to 18155 states and 32823 transitions. [2024-11-09 19:47:27,091 INFO L78 Accepts]: Start accepts. Automaton has 18155 states and 32823 transitions. Word has length 2006 [2024-11-09 19:47:27,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:47:27,092 INFO L471 AbstractCegarLoop]: Abstraction has 18155 states and 32823 transitions. [2024-11-09 19:47:27,092 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 165.0) internal successors, (495), 3 states have internal predecessors, (495), 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) [2024-11-09 19:47:27,092 INFO L276 IsEmpty]: Start isEmpty. Operand 18155 states and 32823 transitions. [2024-11-09 19:47:27,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2054 [2024-11-09 19:47:27,209 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:47:27,210 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:47:27,210 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-09 19:47:27,210 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:47:27,211 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:47:27,211 INFO L85 PathProgramCache]: Analyzing trace with hash -1404581182, now seen corresponding path program 1 times [2024-11-09 19:47:27,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:47:27,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180501193] [2024-11-09 19:47:27,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:47:27,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:47:27,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:47:29,546 INFO L134 CoverageAnalysis]: Checked inductivity of 8303 backedges. 5366 proven. 0 refuted. 0 times theorem prover too weak. 2937 trivial. 0 not checked. [2024-11-09 19:47:29,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:47:29,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180501193] [2024-11-09 19:47:29,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180501193] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:47:29,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:47:29,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 19:47:29,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602272947] [2024-11-09 19:47:29,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:47:29,549 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:47:29,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:47:29,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:47:29,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:47:29,551 INFO L87 Difference]: Start difference. First operand 18155 states and 32823 transitions. Second operand has 4 states, 4 states have (on average 192.5) internal successors, (770), 4 states have internal predecessors, (770), 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)