./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem02_label19.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/eca-rers2012/Problem02_label19.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 eadd63632d128e63354140f48e358b613932fbd540e74b83f7baa2b6412d6e8f --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 03:06:18,814 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 03:06:18,891 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 03:06:18,897 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 03:06:18,898 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 03:06:18,932 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 03:06:18,934 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 03:06:18,935 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 03:06:18,936 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 03:06:18,937 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 03:06:18,938 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 03:06:18,938 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 03:06:18,939 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 03:06:18,940 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 03:06:18,941 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 03:06:18,941 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 03:06:18,941 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 03:06:18,942 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 03:06:18,942 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 03:06:18,942 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 03:06:18,942 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 03:06:18,946 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 03:06:18,946 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 03:06:18,947 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 03:06:18,947 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 03:06:18,947 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 03:06:18,947 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 03:06:18,948 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 03:06:18,948 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 03:06:18,948 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 03:06:18,948 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 03:06:18,949 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 03:06:18,949 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 03:06:18,949 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 03:06:18,949 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 03:06:18,950 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 03:06:18,950 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 03:06:18,950 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 03:06:18,950 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 03:06:18,951 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 03:06:18,951 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 03:06:18,952 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 03:06:18,952 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eadd63632d128e63354140f48e358b613932fbd540e74b83f7baa2b6412d6e8f [2024-11-16 03:06:19,196 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 03:06:19,240 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 03:06:19,244 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 03:06:19,245 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 03:06:19,246 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 03:06:19,247 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem02_label19.c [2024-11-16 03:06:20,734 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 03:06:20,994 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 03:06:20,994 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem02_label19.c [2024-11-16 03:06:21,015 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d218b2747/4a068413f27041878d8de24226637a2a/FLAG265b19c03 [2024-11-16 03:06:21,322 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d218b2747/4a068413f27041878d8de24226637a2a [2024-11-16 03:06:21,325 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 03:06:21,326 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 03:06:21,327 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 03:06:21,327 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 03:06:21,332 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 03:06:21,333 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 03:06:21" (1/1) ... [2024-11-16 03:06:21,334 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27121c1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:06:21, skipping insertion in model container [2024-11-16 03:06:21,334 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 03:06:21" (1/1) ... [2024-11-16 03:06:21,382 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 03:06:21,734 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/Problem02_label19.c[15877,15890] [2024-11-16 03:06:21,798 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 03:06:21,808 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 03:06:21,883 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/Problem02_label19.c[15877,15890] [2024-11-16 03:06:21,912 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 03:06:21,933 INFO L204 MainTranslator]: Completed translation [2024-11-16 03:06:21,933 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:06:21 WrapperNode [2024-11-16 03:06:21,933 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 03:06:21,934 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 03:06:21,935 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 03:06:21,935 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 03:06:21,942 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:06:21" (1/1) ... [2024-11-16 03:06:21,969 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:06:21" (1/1) ... [2024-11-16 03:06:22,033 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 668 [2024-11-16 03:06:22,033 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 03:06:22,034 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 03:06:22,034 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 03:06:22,034 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 03:06:22,045 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:06:21" (1/1) ... [2024-11-16 03:06:22,046 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:06:21" (1/1) ... [2024-11-16 03:06:22,054 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:06:21" (1/1) ... [2024-11-16 03:06:22,091 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-16 03:06:22,091 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:06:21" (1/1) ... [2024-11-16 03:06:22,092 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:06:21" (1/1) ... [2024-11-16 03:06:22,116 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:06:21" (1/1) ... [2024-11-16 03:06:22,123 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:06:21" (1/1) ... [2024-11-16 03:06:22,126 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:06:21" (1/1) ... [2024-11-16 03:06:22,129 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:06:21" (1/1) ... [2024-11-16 03:06:22,136 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 03:06:22,138 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 03:06:22,139 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 03:06:22,139 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 03:06:22,140 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:06:21" (1/1) ... [2024-11-16 03:06:22,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 03:06:22,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 03:06:22,180 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-16 03:06:22,183 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-16 03:06:22,232 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 03:06:22,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 03:06:22,233 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 03:06:22,234 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 03:06:22,305 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 03:06:22,306 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 03:06:23,355 INFO L? ?]: Removed 84 outVars from TransFormulas that were not future-live. [2024-11-16 03:06:23,355 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 03:06:23,381 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 03:06:23,383 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 03:06:23,383 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 03:06:23 BoogieIcfgContainer [2024-11-16 03:06:23,384 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 03:06:23,387 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 03:06:23,387 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 03:06:23,390 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 03:06:23,391 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 03:06:21" (1/3) ... [2024-11-16 03:06:23,392 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7eb4ab1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 03:06:23, skipping insertion in model container [2024-11-16 03:06:23,392 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:06:21" (2/3) ... [2024-11-16 03:06:23,393 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7eb4ab1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 03:06:23, skipping insertion in model container [2024-11-16 03:06:23,394 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 03:06:23" (3/3) ... [2024-11-16 03:06:23,395 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem02_label19.c [2024-11-16 03:06:23,416 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 03:06:23,417 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 03:06:23,494 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 03:06:23,501 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;@79c85bb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 03:06:23,502 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 03:06:23,508 INFO L276 IsEmpty]: Start isEmpty. Operand has 230 states, 228 states have (on average 1.6578947368421053) internal successors, (378), 229 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:06:23,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-16 03:06:23,522 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:06:23,524 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:06:23,525 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:06:23,531 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:06:23,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1264443484, now seen corresponding path program 1 times [2024-11-16 03:06:23,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:06:23,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237865681] [2024-11-16 03:06:23,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:06:23,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:06:23,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:06:24,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 03:06:24,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:06:24,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237865681] [2024-11-16 03:06:24,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237865681] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:06:24,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:06:24,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 03:06:24,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912919209] [2024-11-16 03:06:24,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:06:24,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:06:24,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:06:24,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:06:24,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:06:24,179 INFO L87 Difference]: Start difference. First operand has 230 states, 228 states have (on average 1.6578947368421053) internal successors, (378), 229 states have internal predecessors, (378), 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 31.333333333333332) internal successors, (94), 2 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:06:24,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:06:24,936 INFO L93 Difference]: Finished difference Result 645 states and 1088 transitions. [2024-11-16 03:06:24,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:06:24,939 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 2 states have internal predecessors, (94), 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 94 [2024-11-16 03:06:24,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:06:24,954 INFO L225 Difference]: With dead ends: 645 [2024-11-16 03:06:24,954 INFO L226 Difference]: Without dead ends: 321 [2024-11-16 03:06:24,958 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:06:24,962 INFO L432 NwaCegarLoop]: 107 mSDtfsCounter, 117 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 463 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-16 03:06:24,963 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 140 Invalid, 553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 463 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-16 03:06:24,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2024-11-16 03:06:25,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 316. [2024-11-16 03:06:25,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 315 states have (on average 1.4666666666666666) internal successors, (462), 315 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:06:25,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 462 transitions. [2024-11-16 03:06:25,020 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 462 transitions. Word has length 94 [2024-11-16 03:06:25,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:06:25,020 INFO L471 AbstractCegarLoop]: Abstraction has 316 states and 462 transitions. [2024-11-16 03:06:25,021 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 2 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:06:25,021 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 462 transitions. [2024-11-16 03:06:25,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-16 03:06:25,026 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:06:25,026 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-16 03:06:25,027 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 03:06:25,027 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:06:25,027 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:06:25,028 INFO L85 PathProgramCache]: Analyzing trace with hash -120714208, now seen corresponding path program 1 times [2024-11-16 03:06:25,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:06:25,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097534216] [2024-11-16 03:06:25,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:06:25,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:06:25,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:06:25,494 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 03:06:25,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:06:25,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097534216] [2024-11-16 03:06:25,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097534216] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:06:25,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:06:25,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 03:06:25,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400615710] [2024-11-16 03:06:25,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:06:25,500 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 03:06:25,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:06:25,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 03:06:25,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 03:06:25,503 INFO L87 Difference]: Start difference. First operand 316 states and 462 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:06:26,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:06:26,239 INFO L93 Difference]: Finished difference Result 998 states and 1501 transitions. [2024-11-16 03:06:26,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 03:06:26,240 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 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 99 [2024-11-16 03:06:26,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:06:26,248 INFO L225 Difference]: With dead ends: 998 [2024-11-16 03:06:26,248 INFO L226 Difference]: Without dead ends: 600 [2024-11-16 03:06:26,250 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 03:06:26,251 INFO L432 NwaCegarLoop]: 85 mSDtfsCounter, 170 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 664 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 664 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-16 03:06:26,252 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 125 Invalid, 789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 664 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-16 03:06:26,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2024-11-16 03:06:26,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 600. [2024-11-16 03:06:26,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 600 states, 599 states have (on average 1.335559265442404) internal successors, (800), 599 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:06:26,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 800 transitions. [2024-11-16 03:06:26,306 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 800 transitions. Word has length 99 [2024-11-16 03:06:26,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:06:26,306 INFO L471 AbstractCegarLoop]: Abstraction has 600 states and 800 transitions. [2024-11-16 03:06:26,306 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:06:26,307 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 800 transitions. [2024-11-16 03:06:26,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-16 03:06:26,310 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:06:26,310 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:06:26,310 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 03:06:26,311 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:06:26,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:06:26,311 INFO L85 PathProgramCache]: Analyzing trace with hash -827385392, now seen corresponding path program 1 times [2024-11-16 03:06:26,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:06:26,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646454642] [2024-11-16 03:06:26,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:06:26,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:06:26,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:06:26,478 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 03:06:26,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:06:26,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646454642] [2024-11-16 03:06:26,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646454642] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:06:26,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:06:26,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 03:06:26,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558648965] [2024-11-16 03:06:26,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:06:26,480 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:06:26,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:06:26,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:06:26,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:06:26,481 INFO L87 Difference]: Start difference. First operand 600 states and 800 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 2 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:06:26,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:06:26,939 INFO L93 Difference]: Finished difference Result 1767 states and 2360 transitions. [2024-11-16 03:06:26,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:06:26,939 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 2 states have internal predecessors, (126), 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 126 [2024-11-16 03:06:26,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:06:26,943 INFO L225 Difference]: With dead ends: 1767 [2024-11-16 03:06:26,944 INFO L226 Difference]: Without dead ends: 1169 [2024-11-16 03:06:26,945 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:06:26,947 INFO L432 NwaCegarLoop]: 112 mSDtfsCounter, 120 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-16 03:06:26,947 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 130 Invalid, 445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-16 03:06:26,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1169 states. [2024-11-16 03:06:26,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1169 to 1166. [2024-11-16 03:06:26,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1166 states, 1165 states have (on average 1.207725321888412) internal successors, (1407), 1165 states have internal predecessors, (1407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:06:26,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1166 states to 1166 states and 1407 transitions. [2024-11-16 03:06:26,975 INFO L78 Accepts]: Start accepts. Automaton has 1166 states and 1407 transitions. Word has length 126 [2024-11-16 03:06:26,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:06:26,975 INFO L471 AbstractCegarLoop]: Abstraction has 1166 states and 1407 transitions. [2024-11-16 03:06:26,975 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 2 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:06:26,976 INFO L276 IsEmpty]: Start isEmpty. Operand 1166 states and 1407 transitions. [2024-11-16 03:06:26,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-16 03:06:26,980 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:06:26,980 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-16 03:06:26,980 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 03:06:26,981 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:06:26,981 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:06:26,981 INFO L85 PathProgramCache]: Analyzing trace with hash 741710713, now seen corresponding path program 1 times [2024-11-16 03:06:26,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:06:26,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401130657] [2024-11-16 03:06:26,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:06:26,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:06:27,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:06:27,295 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 03:06:27,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:06:27,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401130657] [2024-11-16 03:06:27,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401130657] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:06:27,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:06:27,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 03:06:27,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555186595] [2024-11-16 03:06:27,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:06:27,297 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 03:06:27,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:06:27,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 03:06:27,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-16 03:06:27,298 INFO L87 Difference]: Start difference. First operand 1166 states and 1407 transitions. Second operand has 5 states, 5 states have (on average 25.8) internal successors, (129), 4 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:06:28,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:06:28,130 INFO L93 Difference]: Finished difference Result 2471 states and 2987 transitions. [2024-11-16 03:06:28,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 03:06:28,131 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.8) internal successors, (129), 4 states have internal predecessors, (129), 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 129 [2024-11-16 03:06:28,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:06:28,136 INFO L225 Difference]: With dead ends: 2471 [2024-11-16 03:06:28,136 INFO L226 Difference]: Without dead ends: 1307 [2024-11-16 03:06:28,139 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-16 03:06:28,141 INFO L432 NwaCegarLoop]: 86 mSDtfsCounter, 343 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 1004 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 1076 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1004 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-16 03:06:28,143 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [343 Valid, 169 Invalid, 1076 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1004 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-16 03:06:28,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1307 states. [2024-11-16 03:06:28,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1307 to 1307. [2024-11-16 03:06:28,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1307 states, 1306 states have (on average 1.189127105666156) internal successors, (1553), 1306 states have internal predecessors, (1553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:06:28,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1307 states to 1307 states and 1553 transitions. [2024-11-16 03:06:28,173 INFO L78 Accepts]: Start accepts. Automaton has 1307 states and 1553 transitions. Word has length 129 [2024-11-16 03:06:28,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:06:28,174 INFO L471 AbstractCegarLoop]: Abstraction has 1307 states and 1553 transitions. [2024-11-16 03:06:28,174 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.8) internal successors, (129), 4 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:06:28,175 INFO L276 IsEmpty]: Start isEmpty. Operand 1307 states and 1553 transitions. [2024-11-16 03:06:28,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-11-16 03:06:28,178 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:06:28,178 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2024-11-16 03:06:28,179 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-16 03:06:28,179 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:06:28,179 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:06:28,180 INFO L85 PathProgramCache]: Analyzing trace with hash 425446511, now seen corresponding path program 1 times [2024-11-16 03:06:28,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:06:28,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967181939] [2024-11-16 03:06:28,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:06:28,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:06:28,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:06:28,325 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-16 03:06:28,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:06:28,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967181939] [2024-11-16 03:06:28,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967181939] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:06:28,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:06:28,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 03:06:28,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298593083] [2024-11-16 03:06:28,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:06:28,330 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:06:28,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:06:28,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:06:28,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:06:28,331 INFO L87 Difference]: Start difference. First operand 1307 states and 1553 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:06:28,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:06:28,810 INFO L93 Difference]: Finished difference Result 3036 states and 3676 transitions. [2024-11-16 03:06:28,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:06:28,810 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 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 130 [2024-11-16 03:06:28,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:06:28,816 INFO L225 Difference]: With dead ends: 3036 [2024-11-16 03:06:28,816 INFO L226 Difference]: Without dead ends: 1585 [2024-11-16 03:06:28,819 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:06:28,820 INFO L432 NwaCegarLoop]: 253 mSDtfsCounter, 141 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-16 03:06:28,820 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 277 Invalid, 429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-16 03:06:28,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1585 states. [2024-11-16 03:06:28,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1585 to 1444. [2024-11-16 03:06:28,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1444 states, 1443 states have (on average 1.164934164934165) internal successors, (1681), 1443 states have internal predecessors, (1681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:06:28,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1444 states to 1444 states and 1681 transitions. [2024-11-16 03:06:28,849 INFO L78 Accepts]: Start accepts. Automaton has 1444 states and 1681 transitions. Word has length 130 [2024-11-16 03:06:28,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:06:28,850 INFO L471 AbstractCegarLoop]: Abstraction has 1444 states and 1681 transitions. [2024-11-16 03:06:28,850 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:06:28,851 INFO L276 IsEmpty]: Start isEmpty. Operand 1444 states and 1681 transitions. [2024-11-16 03:06:28,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2024-11-16 03:06:28,854 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:06:28,854 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:06:28,855 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-16 03:06:28,855 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:06:28,856 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:06:28,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1563372342, now seen corresponding path program 1 times [2024-11-16 03:06:28,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:06:28,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925858619] [2024-11-16 03:06:28,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:06:28,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:06:28,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:06:28,967 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 03:06:28,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:06:28,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925858619] [2024-11-16 03:06:28,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925858619] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:06:28,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:06:28,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 03:06:28,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248119812] [2024-11-16 03:06:28,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:06:28,969 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:06:28,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:06:28,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:06:28,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:06:28,970 INFO L87 Difference]: Start difference. First operand 1444 states and 1681 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:06:29,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:06:29,421 INFO L93 Difference]: Finished difference Result 3307 states and 3859 transitions. [2024-11-16 03:06:29,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:06:29,422 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 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 132 [2024-11-16 03:06:29,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:06:29,440 INFO L225 Difference]: With dead ends: 3307 [2024-11-16 03:06:29,441 INFO L226 Difference]: Without dead ends: 1865 [2024-11-16 03:06:29,443 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:06:29,444 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 153 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-16 03:06:29,445 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 50 Invalid, 448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 347 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-16 03:06:29,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1865 states. [2024-11-16 03:06:29,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1865 to 1723. [2024-11-16 03:06:29,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1723 states, 1722 states have (on average 1.1666666666666667) internal successors, (2009), 1722 states have internal predecessors, (2009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:06:29,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1723 states to 1723 states and 2009 transitions. [2024-11-16 03:06:29,480 INFO L78 Accepts]: Start accepts. Automaton has 1723 states and 2009 transitions. Word has length 132 [2024-11-16 03:06:29,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:06:29,481 INFO L471 AbstractCegarLoop]: Abstraction has 1723 states and 2009 transitions. [2024-11-16 03:06:29,481 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:06:29,481 INFO L276 IsEmpty]: Start isEmpty. Operand 1723 states and 2009 transitions. [2024-11-16 03:06:29,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-11-16 03:06:29,486 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:06:29,486 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:06:29,486 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-16 03:06:29,487 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:06:29,487 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:06:29,487 INFO L85 PathProgramCache]: Analyzing trace with hash -86298087, now seen corresponding path program 1 times [2024-11-16 03:06:29,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:06:29,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424210422] [2024-11-16 03:06:29,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:06:29,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:06:29,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:06:29,687 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-16 03:06:29,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:06:29,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424210422] [2024-11-16 03:06:29,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424210422] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:06:29,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:06:29,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 03:06:29,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45348716] [2024-11-16 03:06:29,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:06:29,689 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 03:06:29,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:06:29,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 03:06:29,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-16 03:06:29,691 INFO L87 Difference]: Start difference. First operand 1723 states and 2009 transitions. Second operand has 5 states, 5 states have (on average 28.8) internal successors, (144), 4 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:06:30,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:06:30,489 INFO L93 Difference]: Finished difference Result 3726 states and 4341 transitions. [2024-11-16 03:06:30,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 03:06:30,490 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.8) internal successors, (144), 4 states have internal predecessors, (144), 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 150 [2024-11-16 03:06:30,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:06:30,495 INFO L225 Difference]: With dead ends: 3726 [2024-11-16 03:06:30,495 INFO L226 Difference]: Without dead ends: 1723 [2024-11-16 03:06:30,498 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-16 03:06:30,498 INFO L432 NwaCegarLoop]: 85 mSDtfsCounter, 346 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 936 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 1014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 936 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-16 03:06:30,499 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [346 Valid, 151 Invalid, 1014 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 936 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-16 03:06:30,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1723 states. [2024-11-16 03:06:30,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1723 to 1723. [2024-11-16 03:06:30,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1723 states, 1722 states have (on average 1.1300813008130082) internal successors, (1946), 1722 states have internal predecessors, (1946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:06:30,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1723 states to 1723 states and 1946 transitions. [2024-11-16 03:06:30,524 INFO L78 Accepts]: Start accepts. Automaton has 1723 states and 1946 transitions. Word has length 150 [2024-11-16 03:06:30,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:06:30,525 INFO L471 AbstractCegarLoop]: Abstraction has 1723 states and 1946 transitions. [2024-11-16 03:06:30,525 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.8) internal successors, (144), 4 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:06:30,525 INFO L276 IsEmpty]: Start isEmpty. Operand 1723 states and 1946 transitions. [2024-11-16 03:06:30,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-11-16 03:06:30,528 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:06:30,528 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:06:30,528 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-16 03:06:30,529 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:06:30,529 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:06:30,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1975201111, now seen corresponding path program 1 times [2024-11-16 03:06:30,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:06:30,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674918098] [2024-11-16 03:06:30,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:06:30,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:06:30,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:06:30,630 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 03:06:30,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:06:30,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674918098] [2024-11-16 03:06:30,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674918098] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:06:30,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:06:30,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 03:06:30,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791202210] [2024-11-16 03:06:30,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:06:30,632 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:06:30,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:06:30,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:06:30,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:06:30,633 INFO L87 Difference]: Start difference. First operand 1723 states and 1946 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:06:31,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:06:31,047 INFO L93 Difference]: Finished difference Result 4011 states and 4564 transitions. [2024-11-16 03:06:31,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:06:31,048 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 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 158 [2024-11-16 03:06:31,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:06:31,055 INFO L225 Difference]: With dead ends: 4011 [2024-11-16 03:06:31,055 INFO L226 Difference]: Without dead ends: 2146 [2024-11-16 03:06:31,058 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:06:31,059 INFO L432 NwaCegarLoop]: 202 mSDtfsCounter, 134 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-16 03:06:31,059 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 218 Invalid, 405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-16 03:06:31,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2146 states. [2024-11-16 03:06:31,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2146 to 2145. [2024-11-16 03:06:31,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2145 states, 2144 states have (on average 1.109141791044776) internal successors, (2378), 2144 states have internal predecessors, (2378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:06:31,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2145 states to 2145 states and 2378 transitions. [2024-11-16 03:06:31,098 INFO L78 Accepts]: Start accepts. Automaton has 2145 states and 2378 transitions. Word has length 158 [2024-11-16 03:06:31,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:06:31,099 INFO L471 AbstractCegarLoop]: Abstraction has 2145 states and 2378 transitions. [2024-11-16 03:06:31,099 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:06:31,100 INFO L276 IsEmpty]: Start isEmpty. Operand 2145 states and 2378 transitions. [2024-11-16 03:06:31,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-11-16 03:06:31,103 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:06:31,103 INFO L215 NwaCegarLoop]: trace histogram [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, 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] [2024-11-16 03:06:31,103 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-16 03:06:31,104 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:06:31,104 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:06:31,104 INFO L85 PathProgramCache]: Analyzing trace with hash -479733731, now seen corresponding path program 1 times [2024-11-16 03:06:31,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:06:31,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006153963] [2024-11-16 03:06:31,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:06:31,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:06:31,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:06:31,214 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 114 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-16 03:06:31,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:06:31,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006153963] [2024-11-16 03:06:31,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006153963] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:06:31,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:06:31,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 03:06:31,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169596360] [2024-11-16 03:06:31,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:06:31,217 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:06:31,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:06:31,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:06:31,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:06:31,218 INFO L87 Difference]: Start difference. First operand 2145 states and 2378 transitions. Second operand has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:06:31,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:06:31,573 INFO L93 Difference]: Finished difference Result 4846 states and 5348 transitions. [2024-11-16 03:06:31,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:06:31,574 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 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 175 [2024-11-16 03:06:31,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:06:31,584 INFO L225 Difference]: With dead ends: 4846 [2024-11-16 03:06:31,585 INFO L226 Difference]: Without dead ends: 2703 [2024-11-16 03:06:31,588 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:06:31,590 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 143 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 03:06:31,591 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 38 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 331 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 03:06:31,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2703 states. [2024-11-16 03:06:31,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2703 to 2421. [2024-11-16 03:06:31,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2421 states, 2420 states have (on average 1.087603305785124) internal successors, (2632), 2420 states have internal predecessors, (2632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:06:31,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2421 states to 2421 states and 2632 transitions. [2024-11-16 03:06:31,640 INFO L78 Accepts]: Start accepts. Automaton has 2421 states and 2632 transitions. Word has length 175 [2024-11-16 03:06:31,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:06:31,640 INFO L471 AbstractCegarLoop]: Abstraction has 2421 states and 2632 transitions. [2024-11-16 03:06:31,640 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:06:31,641 INFO L276 IsEmpty]: Start isEmpty. Operand 2421 states and 2632 transitions. [2024-11-16 03:06:31,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2024-11-16 03:06:31,645 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:06:31,645 INFO L215 NwaCegarLoop]: trace histogram [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, 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] [2024-11-16 03:06:31,645 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-16 03:06:31,646 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:06:31,646 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:06:31,646 INFO L85 PathProgramCache]: Analyzing trace with hash -534913144, now seen corresponding path program 1 times [2024-11-16 03:06:31,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:06:31,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982126099] [2024-11-16 03:06:31,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:06:31,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:06:31,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:06:31,816 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2024-11-16 03:06:31,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:06:31,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982126099] [2024-11-16 03:06:31,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982126099] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:06:31,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:06:31,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 03:06:31,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867269092] [2024-11-16 03:06:31,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:06:31,818 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:06:31,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:06:31,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:06:31,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:06:31,821 INFO L87 Difference]: Start difference. First operand 2421 states and 2632 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:06:32,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:06:32,147 INFO L93 Difference]: Finished difference Result 2424 states and 2634 transitions. [2024-11-16 03:06:32,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:06:32,147 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 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 198 [2024-11-16 03:06:32,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:06:32,155 INFO L225 Difference]: With dead ends: 2424 [2024-11-16 03:06:32,155 INFO L226 Difference]: Without dead ends: 2421 [2024-11-16 03:06:32,156 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:06:32,157 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 97 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 320 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 03:06:32,157 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 33 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 320 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 03:06:32,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2421 states. [2024-11-16 03:06:32,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2421 to 1998. [2024-11-16 03:06:32,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1998 states, 1997 states have (on average 1.0951427140711067) internal successors, (2187), 1997 states have internal predecessors, (2187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:06:32,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1998 states to 1998 states and 2187 transitions. [2024-11-16 03:06:32,194 INFO L78 Accepts]: Start accepts. Automaton has 1998 states and 2187 transitions. Word has length 198 [2024-11-16 03:06:32,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:06:32,195 INFO L471 AbstractCegarLoop]: Abstraction has 1998 states and 2187 transitions. [2024-11-16 03:06:32,195 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:06:32,195 INFO L276 IsEmpty]: Start isEmpty. Operand 1998 states and 2187 transitions. [2024-11-16 03:06:32,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2024-11-16 03:06:32,199 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:06:32,199 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:06:32,199 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-16 03:06:32,199 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:06:32,200 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:06:32,200 INFO L85 PathProgramCache]: Analyzing trace with hash 967937734, now seen corresponding path program 1 times [2024-11-16 03:06:32,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:06:32,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802457275] [2024-11-16 03:06:32,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:06:32,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:06:32,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:06:32,408 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 186 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-16 03:06:32,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:06:32,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802457275] [2024-11-16 03:06:32,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802457275] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:06:32,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:06:32,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 03:06:32,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136695156] [2024-11-16 03:06:32,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:06:32,410 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:06:32,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:06:32,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:06:32,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:06:32,411 INFO L87 Difference]: Start difference. First operand 1998 states and 2187 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:06:32,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:06:32,730 INFO L93 Difference]: Finished difference Result 4276 states and 4680 transitions. [2024-11-16 03:06:32,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:06:32,731 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 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 218 [2024-11-16 03:06:32,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:06:32,737 INFO L225 Difference]: With dead ends: 4276 [2024-11-16 03:06:32,738 INFO L226 Difference]: Without dead ends: 2139 [2024-11-16 03:06:32,741 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:06:32,742 INFO L432 NwaCegarLoop]: 196 mSDtfsCounter, 139 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 03:06:32,742 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 209 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 324 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 03:06:32,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2139 states. [2024-11-16 03:06:32,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2139 to 2139. [2024-11-16 03:06:32,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2139 states, 2138 states have (on average 1.079045837231057) internal successors, (2307), 2138 states have internal predecessors, (2307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:06:32,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2139 states to 2139 states and 2307 transitions. [2024-11-16 03:06:32,780 INFO L78 Accepts]: Start accepts. Automaton has 2139 states and 2307 transitions. Word has length 218 [2024-11-16 03:06:32,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:06:32,780 INFO L471 AbstractCegarLoop]: Abstraction has 2139 states and 2307 transitions. [2024-11-16 03:06:32,780 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:06:32,781 INFO L276 IsEmpty]: Start isEmpty. Operand 2139 states and 2307 transitions. [2024-11-16 03:06:32,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2024-11-16 03:06:32,785 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:06:32,785 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:06:32,785 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-16 03:06:32,785 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:06:32,786 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:06:32,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1627890882, now seen corresponding path program 1 times [2024-11-16 03:06:32,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:06:32,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561490134] [2024-11-16 03:06:32,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:06:32,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:06:32,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:06:32,891 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 184 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-11-16 03:06:32,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:06:32,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561490134] [2024-11-16 03:06:32,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561490134] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:06:32,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:06:32,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 03:06:32,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85033207] [2024-11-16 03:06:32,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:06:32,893 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:06:32,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:06:32,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:06:32,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:06:32,896 INFO L87 Difference]: Start difference. First operand 2139 states and 2307 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:06:33,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:06:33,247 INFO L93 Difference]: Finished difference Result 4276 states and 4601 transitions. [2024-11-16 03:06:33,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:06:33,247 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 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 221 [2024-11-16 03:06:33,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:06:33,254 INFO L225 Difference]: With dead ends: 4276 [2024-11-16 03:06:33,254 INFO L226 Difference]: Without dead ends: 1997 [2024-11-16 03:06:33,258 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:06:33,259 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 144 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 03:06:33,259 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 60 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 312 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 03:06:33,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1997 states. [2024-11-16 03:06:33,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1997 to 1856. [2024-11-16 03:06:33,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1856 states, 1855 states have (on average 1.061455525606469) internal successors, (1969), 1855 states have internal predecessors, (1969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:06:33,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1856 states to 1856 states and 1969 transitions. [2024-11-16 03:06:33,312 INFO L78 Accepts]: Start accepts. Automaton has 1856 states and 1969 transitions. Word has length 221 [2024-11-16 03:06:33,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:06:33,313 INFO L471 AbstractCegarLoop]: Abstraction has 1856 states and 1969 transitions. [2024-11-16 03:06:33,313 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:06:33,313 INFO L276 IsEmpty]: Start isEmpty. Operand 1856 states and 1969 transitions. [2024-11-16 03:06:33,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2024-11-16 03:06:33,317 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:06:33,317 INFO L215 NwaCegarLoop]: trace histogram [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, 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] [2024-11-16 03:06:33,317 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-16 03:06:33,317 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:06:33,318 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:06:33,318 INFO L85 PathProgramCache]: Analyzing trace with hash -479273703, now seen corresponding path program 1 times [2024-11-16 03:06:33,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:06:33,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379439133] [2024-11-16 03:06:33,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:06:33,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:06:33,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:06:33,413 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 179 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-16 03:06:33,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:06:33,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379439133] [2024-11-16 03:06:33,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379439133] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:06:33,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 03:06:33,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 03:06:33,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741199066] [2024-11-16 03:06:33,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:06:33,415 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:06:33,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:06:33,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:06:33,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:06:33,417 INFO L87 Difference]: Start difference. First operand 1856 states and 1969 transitions. Second operand has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:06:33,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:06:33,742 INFO L93 Difference]: Finished difference Result 4135 states and 4379 transitions. [2024-11-16 03:06:33,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:06:33,742 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 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 222 [2024-11-16 03:06:33,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:06:33,748 INFO L225 Difference]: With dead ends: 4135 [2024-11-16 03:06:33,748 INFO L226 Difference]: Without dead ends: 1996 [2024-11-16 03:06:33,751 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 03:06:33,752 INFO L432 NwaCegarLoop]: 199 mSDtfsCounter, 90 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 03:06:33,753 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 218 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 03:06:33,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1996 states. [2024-11-16 03:06:33,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1996 to 1995. [2024-11-16 03:06:33,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1995 states, 1994 states have (on average 1.043630892678034) internal successors, (2081), 1994 states have internal predecessors, (2081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:06:33,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1995 states to 1995 states and 2081 transitions. [2024-11-16 03:06:33,784 INFO L78 Accepts]: Start accepts. Automaton has 1995 states and 2081 transitions. Word has length 222 [2024-11-16 03:06:33,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:06:33,784 INFO L471 AbstractCegarLoop]: Abstraction has 1995 states and 2081 transitions. [2024-11-16 03:06:33,784 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:06:33,784 INFO L276 IsEmpty]: Start isEmpty. Operand 1995 states and 2081 transitions. [2024-11-16 03:06:33,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2024-11-16 03:06:33,791 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 03:06:33,791 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:06:33,791 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-16 03:06:33,792 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 03:06:33,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 03:06:33,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1107841229, now seen corresponding path program 1 times [2024-11-16 03:06:33,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 03:06:33,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476761631] [2024-11-16 03:06:33,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:06:33,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 03:06:33,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:06:34,220 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 154 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 03:06:34,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 03:06:34,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476761631] [2024-11-16 03:06:34,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476761631] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 03:06:34,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [405848454] [2024-11-16 03:06:34,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 03:06:34,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 03:06:34,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 03:06:34,224 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 03:06:34,226 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-16 03:06:34,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 03:06:34,367 INFO L255 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-16 03:06:34,377 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 03:06:34,537 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2024-11-16 03:06:34,537 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 03:06:34,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [405848454] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 03:06:34,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 03:06:34,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-11-16 03:06:34,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147515273] [2024-11-16 03:06:34,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 03:06:34,538 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 03:06:34,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 03:06:34,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 03:06:34,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-16 03:06:34,539 INFO L87 Difference]: Start difference. First operand 1995 states and 2081 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:06:34,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 03:06:34,870 INFO L93 Difference]: Finished difference Result 3985 states and 4160 transitions. [2024-11-16 03:06:34,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 03:06:34,871 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 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 227 [2024-11-16 03:06:34,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 03:06:34,872 INFO L225 Difference]: With dead ends: 3985 [2024-11-16 03:06:34,872 INFO L226 Difference]: Without dead ends: 0 [2024-11-16 03:06:34,875 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-16 03:06:34,876 INFO L432 NwaCegarLoop]: 193 mSDtfsCounter, 53 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 03:06:34,876 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 208 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 03:06:34,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-16 03:06:34,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-16 03:06:34,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:06:34,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-16 03:06:34,877 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 227 [2024-11-16 03:06:34,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 03:06:34,878 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-16 03:06:34,878 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 03:06:34,878 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-16 03:06:34,878 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-16 03:06:34,881 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-16 03:06:34,901 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-16 03:06:35,086 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,SelfDestructingSolverStorable13 [2024-11-16 03:06:35,090 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 03:06:35,092 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-16 03:06:35,446 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-16 03:06:35,464 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 03:06:35 BoogieIcfgContainer [2024-11-16 03:06:35,464 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-16 03:06:35,464 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-16 03:06:35,464 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-16 03:06:35,465 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-16 03:06:35,465 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 03:06:23" (3/4) ... [2024-11-16 03:06:35,470 INFO L143 WitnessPrinter]: Generating witness for correct program [2024-11-16 03:06:35,494 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2024-11-16 03:06:35,498 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-16 03:06:35,499 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-16 03:06:35,500 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-16 03:06:35,666 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-16 03:06:35,669 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-16 03:06:35,670 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-16 03:06:35,670 INFO L158 Benchmark]: Toolchain (without parser) took 14344.59ms. Allocated memory was 151.0MB in the beginning and 318.8MB in the end (delta: 167.8MB). Free memory was 95.3MB in the beginning and 150.7MB in the end (delta: -55.4MB). Peak memory consumption was 113.7MB. Max. memory is 16.1GB. [2024-11-16 03:06:35,671 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 151.0MB. Free memory was 119.0MB in the beginning and 119.0MB in the end (delta: 24.9kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-16 03:06:35,671 INFO L158 Benchmark]: CACSL2BoogieTranslator took 606.74ms. Allocated memory is still 151.0MB. Free memory was 94.7MB in the beginning and 66.7MB in the end (delta: 28.0MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2024-11-16 03:06:35,671 INFO L158 Benchmark]: Boogie Procedure Inliner took 99.15ms. Allocated memory is still 151.0MB. Free memory was 66.7MB in the beginning and 61.0MB in the end (delta: 5.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-16 03:06:35,671 INFO L158 Benchmark]: Boogie Preprocessor took 103.00ms. Allocated memory is still 151.0MB. Free memory was 61.0MB in the beginning and 56.2MB in the end (delta: 4.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-11-16 03:06:35,672 INFO L158 Benchmark]: IcfgBuilder took 1245.52ms. Allocated memory was 151.0MB in the beginning and 209.7MB in the end (delta: 58.7MB). Free memory was 56.2MB in the beginning and 108.7MB in the end (delta: -52.6MB). Peak memory consumption was 20.4MB. Max. memory is 16.1GB. [2024-11-16 03:06:35,672 INFO L158 Benchmark]: TraceAbstraction took 12077.36ms. Allocated memory was 209.7MB in the beginning and 318.8MB in the end (delta: 109.1MB). Free memory was 108.7MB in the beginning and 163.3MB in the end (delta: -54.6MB). Peak memory consumption was 55.5MB. Max. memory is 16.1GB. [2024-11-16 03:06:35,672 INFO L158 Benchmark]: Witness Printer took 205.35ms. Allocated memory is still 318.8MB. Free memory was 163.3MB in the beginning and 150.7MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-16 03:06:35,677 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 151.0MB. Free memory was 119.0MB in the beginning and 119.0MB in the end (delta: 24.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 606.74ms. Allocated memory is still 151.0MB. Free memory was 94.7MB in the beginning and 66.7MB in the end (delta: 28.0MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 99.15ms. Allocated memory is still 151.0MB. Free memory was 66.7MB in the beginning and 61.0MB in the end (delta: 5.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 103.00ms. Allocated memory is still 151.0MB. Free memory was 61.0MB in the beginning and 56.2MB in the end (delta: 4.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * IcfgBuilder took 1245.52ms. Allocated memory was 151.0MB in the beginning and 209.7MB in the end (delta: 58.7MB). Free memory was 56.2MB in the beginning and 108.7MB in the end (delta: -52.6MB). Peak memory consumption was 20.4MB. Max. memory is 16.1GB. * TraceAbstraction took 12077.36ms. Allocated memory was 209.7MB in the beginning and 318.8MB in the end (delta: 109.1MB). Free memory was 108.7MB in the beginning and 163.3MB in the end (delta: -54.6MB). Peak memory consumption was 55.5MB. Max. memory is 16.1GB. * Witness Printer took 205.35ms. Allocated memory is still 318.8MB. Free memory was 163.3MB in the beginning and 150.7MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 458]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 230 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 11.6s, OverallIterations: 14, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 7.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2190 SdHoareTripleChecker+Valid, 6.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2190 mSDsluCounter, 2026 SdHoareTripleChecker+Invalid, 5.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 359 mSDsCounter, 843 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6360 IncrementalHoareTripleChecker+Invalid, 7203 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 843 mSolverCounterUnsat, 1667 mSDtfsCounter, 6360 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 271 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2421occurred in iteration=9, InterpolantAutomatonStates: 47, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 14 MinimizatonAttempts, 1139 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 2506 NumberOfCodeBlocks, 2506 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 2491 ConstructedInterpolants, 0 QuantifiedInterpolants, 7550 SizeOfPredicates, 0 NumberOfNonLiveVariables, 376 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 15 InterpolantComputations, 14 PerfectInterpolantSequences, 1707/1795 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 616]: Location Invariant Derived location invariant: null RESULT: Ultimate proved your program to be correct! [2024-11-16 03:06:35,710 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE