./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem16_label11.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/eca-rers2012/Problem16_label11.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 ad24518eb48bdb2cd9eb62c6c7c8e6761cdaf552ed2e2f0623280cf19933d94d --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-09 19:45:48,736 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 19:45:48,812 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 19:45:48,820 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 19:45:48,820 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 19:45:48,848 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 19:45:48,850 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 19:45:48,851 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 19:45:48,852 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 19:45:48,853 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 19:45:48,854 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 19:45:48,854 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 19:45:48,854 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 19:45:48,855 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 19:45:48,856 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 19:45:48,857 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 19:45:48,857 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 19:45:48,857 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 19:45:48,858 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 19:45:48,858 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 19:45:48,861 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 19:45:48,861 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 19:45:48,862 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 19:45:48,862 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 19:45:48,862 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 19:45:48,862 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 19:45:48,863 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 19:45:48,863 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 19:45:48,863 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-09 19:45:48,864 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 19:45:48,869 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 19:45:48,869 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 19:45:48,870 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 19:45:48,870 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 19:45:48,870 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 19:45:48,870 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 19:45:48,870 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 19:45:48,871 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 19:45:48,871 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 19:45:48,871 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 19:45:48,871 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 19:45:48,872 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 19:45:48,872 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ad24518eb48bdb2cd9eb62c6c7c8e6761cdaf552ed2e2f0623280cf19933d94d [2024-11-09 19:45:49,117 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 19:45:49,140 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 19:45:49,144 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 19:45:49,145 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 19:45:49,146 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 19:45:49,147 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem16_label11.c [2024-11-09 19:45:50,607 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 19:45:50,918 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 19:45:50,919 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem16_label11.c [2024-11-09 19:45:50,943 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9055fd66a/63ed48fbd92d40c99d8ef94a631683de/FLAG184559258 [2024-11-09 19:45:51,196 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9055fd66a/63ed48fbd92d40c99d8ef94a631683de [2024-11-09 19:45:51,198 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 19:45:51,200 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 19:45:51,201 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 19:45:51,201 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 19:45:51,207 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 19:45:51,208 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:45:51" (1/1) ... [2024-11-09 19:45:51,209 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53ae8f4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:45:51, skipping insertion in model container [2024-11-09 19:45:51,209 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:45:51" (1/1) ... [2024-11-09 19:45:51,278 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 19:45:51,513 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem16_label11.c[5798,5811] [2024-11-09 19:45:51,874 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 19:45:51,884 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 19:45:51,912 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem16_label11.c[5798,5811] [2024-11-09 19:45:52,064 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 19:45:52,085 INFO L204 MainTranslator]: Completed translation [2024-11-09 19:45:52,086 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:45:52 WrapperNode [2024-11-09 19:45:52,086 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 19:45:52,087 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 19:45:52,087 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 19:45:52,087 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 19:45:52,093 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:45:52" (1/1) ... [2024-11-09 19:45:52,130 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:45:52" (1/1) ... [2024-11-09 19:45:52,288 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1769 [2024-11-09 19:45:52,289 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 19:45:52,289 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 19:45:52,289 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 19:45:52,290 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 19:45:52,300 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:45:52" (1/1) ... [2024-11-09 19:45:52,300 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:45:52" (1/1) ... [2024-11-09 19:45:52,322 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:45:52" (1/1) ... [2024-11-09 19:45:52,401 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-09 19:45:52,401 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:45:52" (1/1) ... [2024-11-09 19:45:52,401 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:45:52" (1/1) ... [2024-11-09 19:45:52,469 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:45:52" (1/1) ... [2024-11-09 19:45:52,477 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:45:52" (1/1) ... [2024-11-09 19:45:52,488 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:45:52" (1/1) ... [2024-11-09 19:45:52,498 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:45:52" (1/1) ... [2024-11-09 19:45:52,514 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 19:45:52,516 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-09 19:45:52,516 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-09 19:45:52,516 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-09 19:45:52,517 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:45:52" (1/1) ... [2024-11-09 19:45:52,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 19:45:52,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:45:52,548 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-09 19:45:52,549 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-09 19:45:52,583 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 19:45:52,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 19:45:52,584 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 19:45:52,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 19:45:52,654 INFO L256 CfgBuilder]: Building ICFG [2024-11-09 19:45:52,656 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 19:45:55,042 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L1501: havoc calculate_output_#t~ret7#1; [2024-11-09 19:45:55,159 INFO L? ?]: Removed 757 outVars from TransFormulas that were not future-live. [2024-11-09 19:45:55,159 INFO L307 CfgBuilder]: Performing block encoding [2024-11-09 19:45:55,187 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 19:45:55,188 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 19:45:55,188 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 07:45:55 BoogieIcfgContainer [2024-11-09 19:45:55,188 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-09 19:45:55,190 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 19:45:55,190 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 19:45:55,193 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 19:45:55,194 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 07:45:51" (1/3) ... [2024-11-09 19:45:55,194 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d3f2cff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:45:55, skipping insertion in model container [2024-11-09 19:45:55,194 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:45:52" (2/3) ... [2024-11-09 19:45:55,195 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d3f2cff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:45:55, skipping insertion in model container [2024-11-09 19:45:55,195 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 07:45:55" (3/3) ... [2024-11-09 19:45:55,196 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label11.c [2024-11-09 19:45:55,214 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 19:45:55,214 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 19:45:55,286 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 19:45:55,292 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;@5566cc48, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 19:45:55,292 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 19:45:55,298 INFO L276 IsEmpty]: Start isEmpty. Operand has 399 states, 397 states have (on average 2.4886649874055418) internal successors, (988), 398 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:45:55,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-09 19:45:55,305 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:45:55,306 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] [2024-11-09 19:45:55,306 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:45:55,310 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:45:55,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1632460870, now seen corresponding path program 1 times [2024-11-09 19:45:55,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:45:55,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204048738] [2024-11-09 19:45:55,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:45:55,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:45:55,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:45:55,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:45:55,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:45:55,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204048738] [2024-11-09 19:45:55,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204048738] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:45:55,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:45:55,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:45:55,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625704901] [2024-11-09 19:45:55,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:45:55,814 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:45:55,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:45:55,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:45:55,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:45:55,845 INFO L87 Difference]: Start difference. First operand has 399 states, 397 states have (on average 2.4886649874055418) internal successors, (988), 398 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:45:59,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:45:59,586 INFO L93 Difference]: Finished difference Result 1463 states and 3819 transitions. [2024-11-09 19:45:59,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:45:59,589 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 3 states have internal predecessors, (57), 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 57 [2024-11-09 19:45:59,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:45:59,608 INFO L225 Difference]: With dead ends: 1463 [2024-11-09 19:45:59,608 INFO L226 Difference]: Without dead ends: 995 [2024-11-09 19:45:59,612 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 19:45:59,615 INFO L432 NwaCegarLoop]: 326 mSDtfsCounter, 1710 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 3485 mSolverCounterSat, 509 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1710 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 3994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 509 IncrementalHoareTripleChecker+Valid, 3485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-11-09 19:45:59,616 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1710 Valid, 354 Invalid, 3994 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [509 Valid, 3485 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-11-09 19:45:59,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 995 states. [2024-11-09 19:45:59,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 995 to 995. [2024-11-09 19:45:59,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 995 states, 994 states have (on average 2.2746478873239435) internal successors, (2261), 994 states have internal predecessors, (2261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:45:59,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 995 states to 995 states and 2261 transitions. [2024-11-09 19:45:59,715 INFO L78 Accepts]: Start accepts. Automaton has 995 states and 2261 transitions. Word has length 57 [2024-11-09 19:45:59,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:45:59,716 INFO L471 AbstractCegarLoop]: Abstraction has 995 states and 2261 transitions. [2024-11-09 19:45:59,716 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:45:59,716 INFO L276 IsEmpty]: Start isEmpty. Operand 995 states and 2261 transitions. [2024-11-09 19:45:59,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-09 19:45:59,722 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:45:59,723 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, 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] [2024-11-09 19:45:59,723 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 19:45:59,723 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:45:59,724 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:45:59,724 INFO L85 PathProgramCache]: Analyzing trace with hash 704500887, now seen corresponding path program 1 times [2024-11-09 19:45:59,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:45:59,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033739734] [2024-11-09 19:45:59,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:45:59,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:45:59,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:46:00,003 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2024-11-09 19:46:00,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:46:00,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033739734] [2024-11-09 19:46:00,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033739734] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:46:00,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:46:00,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:46:00,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275808079] [2024-11-09 19:46:00,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:46:00,007 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:46:00,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:46:00,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:46:00,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:46:00,009 INFO L87 Difference]: Start difference. First operand 995 states and 2261 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 2 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:46:01,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:46:01,593 INFO L93 Difference]: Finished difference Result 2318 states and 5569 transitions. [2024-11-09 19:46:01,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:46:01,594 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 2 states have internal predecessors, (93), 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 145 [2024-11-09 19:46:01,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:46:01,602 INFO L225 Difference]: With dead ends: 2318 [2024-11-09 19:46:01,602 INFO L226 Difference]: Without dead ends: 1655 [2024-11-09 19:46:01,603 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:46:01,605 INFO L432 NwaCegarLoop]: 196 mSDtfsCounter, 542 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1328 mSolverCounterSat, 390 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 542 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 1718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 390 IncrementalHoareTripleChecker+Valid, 1328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-09 19:46:01,605 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [542 Valid, 203 Invalid, 1718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [390 Valid, 1328 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-09 19:46:01,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1655 states. [2024-11-09 19:46:01,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1655 to 1655. [2024-11-09 19:46:01,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1655 states, 1654 states have (on average 2.1698911729141477) internal successors, (3589), 1654 states have internal predecessors, (3589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:46:01,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1655 states to 1655 states and 3589 transitions. [2024-11-09 19:46:01,643 INFO L78 Accepts]: Start accepts. Automaton has 1655 states and 3589 transitions. Word has length 145 [2024-11-09 19:46:01,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:46:01,643 INFO L471 AbstractCegarLoop]: Abstraction has 1655 states and 3589 transitions. [2024-11-09 19:46:01,644 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 2 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:46:01,644 INFO L276 IsEmpty]: Start isEmpty. Operand 1655 states and 3589 transitions. [2024-11-09 19:46:01,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2024-11-09 19:46:01,655 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:46:01,656 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:46:01,656 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 19:46:01,656 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:46:01,657 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:46:01,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1578821212, now seen corresponding path program 1 times [2024-11-09 19:46:01,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:46:01,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918906571] [2024-11-09 19:46:01,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:46:01,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:46:01,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:46:01,985 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2024-11-09 19:46:01,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:46:01,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918906571] [2024-11-09 19:46:01,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918906571] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:46:01,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:46:01,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:46:01,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515122787] [2024-11-09 19:46:01,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:46:01,989 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:46:01,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:46:01,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:46:01,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:46:01,992 INFO L87 Difference]: Start difference. First operand 1655 states and 3589 transitions. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 2 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:46:03,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:46:03,646 INFO L93 Difference]: Finished difference Result 4298 states and 9553 transitions. [2024-11-09 19:46:03,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:46:03,646 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 2 states have internal predecessors, (147), 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 225 [2024-11-09 19:46:03,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:46:03,659 INFO L225 Difference]: With dead ends: 4298 [2024-11-09 19:46:03,659 INFO L226 Difference]: Without dead ends: 2975 [2024-11-09 19:46:03,661 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:46:03,662 INFO L432 NwaCegarLoop]: 154 mSDtfsCounter, 621 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1335 mSolverCounterSat, 368 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 621 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 1703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 368 IncrementalHoareTripleChecker+Valid, 1335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-09 19:46:03,663 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [621 Valid, 159 Invalid, 1703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [368 Valid, 1335 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-09 19:46:03,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2975 states. [2024-11-09 19:46:03,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2975 to 2645. [2024-11-09 19:46:03,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2645 states, 2644 states have (on average 2.1316187594553706) internal successors, (5636), 2644 states have internal predecessors, (5636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:46:03,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2645 states to 2645 states and 5636 transitions. [2024-11-09 19:46:03,731 INFO L78 Accepts]: Start accepts. Automaton has 2645 states and 5636 transitions. Word has length 225 [2024-11-09 19:46:03,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:46:03,732 INFO L471 AbstractCegarLoop]: Abstraction has 2645 states and 5636 transitions. [2024-11-09 19:46:03,733 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 2 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:46:03,733 INFO L276 IsEmpty]: Start isEmpty. Operand 2645 states and 5636 transitions. [2024-11-09 19:46:03,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2024-11-09 19:46:03,739 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:46:03,739 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-09 19:46:03,740 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 19:46:03,740 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:46:03,740 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:46:03,741 INFO L85 PathProgramCache]: Analyzing trace with hash 83150016, now seen corresponding path program 1 times [2024-11-09 19:46:03,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:46:03,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466212492] [2024-11-09 19:46:03,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:46:03,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:46:03,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:46:04,028 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 164 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-11-09 19:46:04,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:46:04,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466212492] [2024-11-09 19:46:04,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466212492] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:46:04,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:46:04,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:46:04,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165135499] [2024-11-09 19:46:04,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:46:04,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:46:04,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:46:04,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:46:04,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:46:04,033 INFO L87 Difference]: Start difference. First operand 2645 states and 5636 transitions. Second operand has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 2 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:46:05,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:46:05,636 INFO L93 Difference]: Finished difference Result 5618 states and 12000 transitions. [2024-11-09 19:46:05,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:46:05,637 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 2 states have internal predecessors, (248), 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 301 [2024-11-09 19:46:05,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:46:05,649 INFO L225 Difference]: With dead ends: 5618 [2024-11-09 19:46:05,649 INFO L226 Difference]: Without dead ends: 3305 [2024-11-09 19:46:05,651 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:46:05,652 INFO L432 NwaCegarLoop]: 75 mSDtfsCounter, 541 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1406 mSolverCounterSat, 268 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 541 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 1674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 268 IncrementalHoareTripleChecker+Valid, 1406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-09 19:46:05,653 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [541 Valid, 80 Invalid, 1674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [268 Valid, 1406 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-09 19:46:05,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3305 states. [2024-11-09 19:46:05,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3305 to 3305. [2024-11-09 19:46:05,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3305 states, 3304 states have (on average 2.016949152542373) internal successors, (6664), 3304 states have internal predecessors, (6664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:46:05,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3305 states to 3305 states and 6664 transitions. [2024-11-09 19:46:05,718 INFO L78 Accepts]: Start accepts. Automaton has 3305 states and 6664 transitions. Word has length 301 [2024-11-09 19:46:05,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:46:05,718 INFO L471 AbstractCegarLoop]: Abstraction has 3305 states and 6664 transitions. [2024-11-09 19:46:05,719 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 2 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:46:05,719 INFO L276 IsEmpty]: Start isEmpty. Operand 3305 states and 6664 transitions. [2024-11-09 19:46:05,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2024-11-09 19:46:05,727 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:46:05,728 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:46:05,728 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 19:46:05,729 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:46:05,729 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:46:05,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1151615580, now seen corresponding path program 1 times [2024-11-09 19:46:05,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:46:05,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598098829] [2024-11-09 19:46:05,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:46:05,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:46:05,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:46:06,033 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 562 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-11-09 19:46:06,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:46:06,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598098829] [2024-11-09 19:46:06,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598098829] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:46:06,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:46:06,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:46:06,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608996816] [2024-11-09 19:46:06,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:46:06,037 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:46:06,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:46:06,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:46:06,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:46:06,038 INFO L87 Difference]: Start difference. First operand 3305 states and 6664 transitions. Second operand has 3 states, 3 states have (on average 105.33333333333333) internal successors, (316), 3 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:46:07,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:46:07,465 INFO L93 Difference]: Finished difference Result 6608 states and 13338 transitions. [2024-11-09 19:46:07,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:46:07,466 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 105.33333333333333) internal successors, (316), 3 states have internal predecessors, (316), 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 480 [2024-11-09 19:46:07,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:46:07,478 INFO L225 Difference]: With dead ends: 6608 [2024-11-09 19:46:07,478 INFO L226 Difference]: Without dead ends: 3305 [2024-11-09 19:46:07,482 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:46:07,485 INFO L432 NwaCegarLoop]: 798 mSDtfsCounter, 551 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1320 mSolverCounterSat, 269 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 551 SdHoareTripleChecker+Valid, 804 SdHoareTripleChecker+Invalid, 1589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 269 IncrementalHoareTripleChecker+Valid, 1320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-09 19:46:07,487 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [551 Valid, 804 Invalid, 1589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [269 Valid, 1320 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-09 19:46:07,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3305 states. [2024-11-09 19:46:07,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3305 to 3305. [2024-11-09 19:46:07,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3305 states, 3304 states have (on average 1.8495762711864407) internal successors, (6111), 3304 states have internal predecessors, (6111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:46:07,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3305 states to 3305 states and 6111 transitions. [2024-11-09 19:46:07,548 INFO L78 Accepts]: Start accepts. Automaton has 3305 states and 6111 transitions. Word has length 480 [2024-11-09 19:46:07,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:46:07,548 INFO L471 AbstractCegarLoop]: Abstraction has 3305 states and 6111 transitions. [2024-11-09 19:46:07,549 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 105.33333333333333) internal successors, (316), 3 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:46:07,549 INFO L276 IsEmpty]: Start isEmpty. Operand 3305 states and 6111 transitions. [2024-11-09 19:46:07,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2024-11-09 19:46:07,558 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:46:07,558 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:46:07,558 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 19:46:07,558 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:46:07,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:46:07,559 INFO L85 PathProgramCache]: Analyzing trace with hash -1890756281, now seen corresponding path program 1 times [2024-11-09 19:46:07,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:46:07,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447138468] [2024-11-09 19:46:07,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:46:07,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:46:07,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:46:08,069 INFO L134 CoverageAnalysis]: Checked inductivity of 509 backedges. 384 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2024-11-09 19:46:08,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:46:08,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447138468] [2024-11-09 19:46:08,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447138468] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:46:08,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:46:08,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:46:08,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6620484] [2024-11-09 19:46:08,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:46:08,072 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:46:08,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:46:08,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:46:08,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:46:08,073 INFO L87 Difference]: Start difference. First operand 3305 states and 6111 transitions. Second operand has 3 states, 3 states have (on average 135.66666666666666) internal successors, (407), 3 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:46:09,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:46:09,274 INFO L93 Difference]: Finished difference Result 7928 states and 14722 transitions. [2024-11-09 19:46:09,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:46:09,275 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 135.66666666666666) internal successors, (407), 3 states have internal predecessors, (407), 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 531 [2024-11-09 19:46:09,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:46:09,290 INFO L225 Difference]: With dead ends: 7928 [2024-11-09 19:46:09,291 INFO L226 Difference]: Without dead ends: 4625 [2024-11-09 19:46:09,294 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:46:09,295 INFO L432 NwaCegarLoop]: 693 mSDtfsCounter, 481 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 1287 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 481 SdHoareTripleChecker+Valid, 701 SdHoareTripleChecker+Invalid, 1388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 1287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-09 19:46:09,296 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [481 Valid, 701 Invalid, 1388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 1287 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-09 19:46:09,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4625 states. [2024-11-09 19:46:09,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4625 to 4625. [2024-11-09 19:46:09,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4625 states, 4624 states have (on average 1.8388840830449826) internal successors, (8503), 4624 states have internal predecessors, (8503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:46:09,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4625 states to 4625 states and 8503 transitions. [2024-11-09 19:46:09,400 INFO L78 Accepts]: Start accepts. Automaton has 4625 states and 8503 transitions. Word has length 531 [2024-11-09 19:46:09,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:46:09,401 INFO L471 AbstractCegarLoop]: Abstraction has 4625 states and 8503 transitions. [2024-11-09 19:46:09,401 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 135.66666666666666) internal successors, (407), 3 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:46:09,402 INFO L276 IsEmpty]: Start isEmpty. Operand 4625 states and 8503 transitions. [2024-11-09 19:46:09,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 595 [2024-11-09 19:46:09,417 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:46:09,418 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:46:09,418 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 19:46:09,418 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:46:09,419 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:46:09,419 INFO L85 PathProgramCache]: Analyzing trace with hash -57971621, now seen corresponding path program 1 times [2024-11-09 19:46:09,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:46:09,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955927837] [2024-11-09 19:46:09,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:46:09,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:46:09,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:46:09,859 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 547 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-11-09 19:46:09,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:46:09,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955927837] [2024-11-09 19:46:09,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955927837] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:46:09,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:46:09,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:46:09,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513424101] [2024-11-09 19:46:09,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:46:09,861 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:46:09,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:46:09,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:46:09,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:46:09,862 INFO L87 Difference]: Start difference. First operand 4625 states and 8503 transitions. Second operand has 3 states, 3 states have (on average 180.33333333333334) internal successors, (541), 3 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:46:11,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:46:11,048 INFO L93 Difference]: Finished difference Result 10568 states and 19505 transitions. [2024-11-09 19:46:11,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:46:11,049 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 180.33333333333334) internal successors, (541), 3 states have internal predecessors, (541), 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 594 [2024-11-09 19:46:11,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:46:11,065 INFO L225 Difference]: With dead ends: 10568 [2024-11-09 19:46:11,066 INFO L226 Difference]: Without dead ends: 5945 [2024-11-09 19:46:11,071 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:46:11,071 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 447 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1297 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 447 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 1398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 1297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-09 19:46:11,072 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [447 Valid, 63 Invalid, 1398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 1297 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-09 19:46:11,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5945 states. [2024-11-09 19:46:11,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5945 to 5945. [2024-11-09 19:46:11,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5945 states, 5944 states have (on average 1.84185733512786) internal successors, (10948), 5944 states have internal predecessors, (10948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:46:11,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5945 states to 5945 states and 10948 transitions. [2024-11-09 19:46:11,191 INFO L78 Accepts]: Start accepts. Automaton has 5945 states and 10948 transitions. Word has length 594 [2024-11-09 19:46:11,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:46:11,192 INFO L471 AbstractCegarLoop]: Abstraction has 5945 states and 10948 transitions. [2024-11-09 19:46:11,193 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 180.33333333333334) internal successors, (541), 3 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:46:11,193 INFO L276 IsEmpty]: Start isEmpty. Operand 5945 states and 10948 transitions. [2024-11-09 19:46:11,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 886 [2024-11-09 19:46:11,206 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:46:11,206 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-09 19:46:11,206 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 19:46:11,207 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:46:11,207 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:46:11,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1095397503, now seen corresponding path program 1 times [2024-11-09 19:46:11,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:46:11,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933203135] [2024-11-09 19:46:11,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:46:11,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:46:11,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:46:13,158 INFO L134 CoverageAnalysis]: Checked inductivity of 1464 backedges. 929 proven. 102 refuted. 0 times theorem prover too weak. 433 trivial. 0 not checked. [2024-11-09 19:46:13,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:46:13,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933203135] [2024-11-09 19:46:13,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933203135] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:46:13,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [334937041] [2024-11-09 19:46:13,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:46:13,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:46:13,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:46:13,162 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 19:46:13,163 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 19:46:13,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:46:13,452 INFO L255 TraceCheckSpWp]: Trace formula consists of 1045 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 19:46:13,473 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:46:13,764 INFO L134 CoverageAnalysis]: Checked inductivity of 1464 backedges. 697 proven. 0 refuted. 0 times theorem prover too weak. 767 trivial. 0 not checked. [2024-11-09 19:46:13,765 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 19:46:13,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [334937041] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:46:13,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 19:46:13,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-11-09 19:46:13,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164426054] [2024-11-09 19:46:13,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:46:13,767 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:46:13,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:46:13,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:46:13,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-09 19:46:13,768 INFO L87 Difference]: Start difference. First operand 5945 states and 10948 transitions. Second operand has 3 states, 3 states have (on average 131.0) internal successors, (393), 3 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:46:14,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:46:14,933 INFO L93 Difference]: Finished difference Result 11558 states and 21300 transitions. [2024-11-09 19:46:14,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:46:14,937 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 131.0) internal successors, (393), 3 states have internal predecessors, (393), 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 885 [2024-11-09 19:46:14,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:46:14,952 INFO L225 Difference]: With dead ends: 11558 [2024-11-09 19:46:14,952 INFO L226 Difference]: Without dead ends: 5945 [2024-11-09 19:46:14,956 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 889 GetRequests, 884 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-09 19:46:14,957 INFO L432 NwaCegarLoop]: 636 mSDtfsCounter, 488 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 1300 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 488 SdHoareTripleChecker+Valid, 644 SdHoareTripleChecker+Invalid, 1318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-09 19:46:14,957 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [488 Valid, 644 Invalid, 1318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1300 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-09 19:46:14,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5945 states. [2024-11-09 19:46:15,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5945 to 5945. [2024-11-09 19:46:15,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5945 states, 5944 states have (on average 1.836137281292059) internal successors, (10914), 5944 states have internal predecessors, (10914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:46:15,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5945 states to 5945 states and 10914 transitions. [2024-11-09 19:46:15,050 INFO L78 Accepts]: Start accepts. Automaton has 5945 states and 10914 transitions. Word has length 885 [2024-11-09 19:46:15,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:46:15,051 INFO L471 AbstractCegarLoop]: Abstraction has 5945 states and 10914 transitions. [2024-11-09 19:46:15,052 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 131.0) internal successors, (393), 3 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:46:15,052 INFO L276 IsEmpty]: Start isEmpty. Operand 5945 states and 10914 transitions. [2024-11-09 19:46:15,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1148 [2024-11-09 19:46:15,068 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:46:15,069 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-09 19:46:15,089 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-09 19:46:15,269 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:46:15,270 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:46:15,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:46:15,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1034573207, now seen corresponding path program 1 times [2024-11-09 19:46:15,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:46:15,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716822253] [2024-11-09 19:46:15,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:46:15,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:46:15,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:46:17,475 INFO L134 CoverageAnalysis]: Checked inductivity of 2143 backedges. 1395 proven. 102 refuted. 0 times theorem prover too weak. 646 trivial. 0 not checked. [2024-11-09 19:46:17,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:46:17,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716822253] [2024-11-09 19:46:17,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716822253] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:46:17,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [792553337] [2024-11-09 19:46:17,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:46:17,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:46:17,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:46:17,478 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 19:46:17,481 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 19:46:17,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:46:17,844 INFO L255 TraceCheckSpWp]: Trace formula consists of 1311 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 19:46:17,855 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:46:18,059 INFO L134 CoverageAnalysis]: Checked inductivity of 2143 backedges. 852 proven. 0 refuted. 0 times theorem prover too weak. 1291 trivial. 0 not checked. [2024-11-09 19:46:18,059 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 19:46:18,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [792553337] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:46:18,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 19:46:18,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-11-09 19:46:18,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074510556] [2024-11-09 19:46:18,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:46:18,061 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:46:18,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:46:18,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:46:18,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-09 19:46:18,062 INFO L87 Difference]: Start difference. First operand 5945 states and 10914 transitions. Second operand has 3 states, 3 states have (on average 159.0) internal successors, (477), 3 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:46:19,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:46:19,239 INFO L93 Difference]: Finished difference Result 13208 states and 24270 transitions. [2024-11-09 19:46:19,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:46:19,240 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 159.0) internal successors, (477), 3 states have internal predecessors, (477), 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 1147 [2024-11-09 19:46:19,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:46:19,254 INFO L225 Difference]: With dead ends: 13208 [2024-11-09 19:46:19,254 INFO L226 Difference]: Without dead ends: 6605 [2024-11-09 19:46:19,259 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1151 GetRequests, 1146 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-09 19:46:19,260 INFO L432 NwaCegarLoop]: 655 mSDtfsCounter, 468 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1277 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 468 SdHoareTripleChecker+Valid, 661 SdHoareTripleChecker+Invalid, 1343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-09 19:46:19,260 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [468 Valid, 661 Invalid, 1343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 1277 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-09 19:46:19,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6605 states. [2024-11-09 19:46:19,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6605 to 6605. [2024-11-09 19:46:19,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6605 states, 6604 states have (on average 1.8299515445184737) internal successors, (12085), 6604 states have internal predecessors, (12085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:46:19,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6605 states to 6605 states and 12085 transitions. [2024-11-09 19:46:19,352 INFO L78 Accepts]: Start accepts. Automaton has 6605 states and 12085 transitions. Word has length 1147 [2024-11-09 19:46:19,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:46:19,354 INFO L471 AbstractCegarLoop]: Abstraction has 6605 states and 12085 transitions. [2024-11-09 19:46:19,354 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 159.0) internal successors, (477), 3 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:46:19,354 INFO L276 IsEmpty]: Start isEmpty. Operand 6605 states and 12085 transitions. [2024-11-09 19:46:19,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1351 [2024-11-09 19:46:19,376 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:46:19,376 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-09 19:46:19,402 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 19:46:19,577 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-09 19:46:19,578 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:46:19,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:46:19,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1992492806, now seen corresponding path program 1 times [2024-11-09 19:46:19,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:46:19,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19119778] [2024-11-09 19:46:19,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:46:19,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:46:19,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:46:21,363 INFO L134 CoverageAnalysis]: Checked inductivity of 3885 backedges. 1856 proven. 102 refuted. 0 times theorem prover too weak. 1927 trivial. 0 not checked. [2024-11-09 19:46:21,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:46:21,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19119778] [2024-11-09 19:46:21,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19119778] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:46:21,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [196563913] [2024-11-09 19:46:21,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:46:21,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:46:21,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:46:21,366 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 19:46:21,368 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 19:46:21,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:46:21,826 INFO L255 TraceCheckSpWp]: Trace formula consists of 1576 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 19:46:21,846 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:46:21,970 INFO L134 CoverageAnalysis]: Checked inductivity of 3885 backedges. 431 proven. 0 refuted. 0 times theorem prover too weak. 3454 trivial. 0 not checked. [2024-11-09 19:46:21,971 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 19:46:21,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [196563913] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:46:21,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 19:46:21,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-11-09 19:46:21,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979880278] [2024-11-09 19:46:21,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:46:21,973 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:46:21,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:46:21,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:46:21,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-09 19:46:21,974 INFO L87 Difference]: Start difference. First operand 6605 states and 12085 transitions. Second operand has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:46:23,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:46:23,129 INFO L93 Difference]: Finished difference Result 14528 states and 26625 transitions. [2024-11-09 19:46:23,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:46:23,130 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 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 1350 [2024-11-09 19:46:23,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:46:23,148 INFO L225 Difference]: With dead ends: 14528 [2024-11-09 19:46:23,148 INFO L226 Difference]: Without dead ends: 7925 [2024-11-09 19:46:23,155 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1354 GetRequests, 1349 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-09 19:46:23,156 INFO L432 NwaCegarLoop]: 692 mSDtfsCounter, 539 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 1285 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 539 SdHoareTripleChecker+Valid, 700 SdHoareTripleChecker+Invalid, 1356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-09 19:46:23,156 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [539 Valid, 700 Invalid, 1356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1285 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-09 19:46:23,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7925 states. [2024-11-09 19:46:23,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7925 to 7925. [2024-11-09 19:46:23,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7925 states, 7924 states have (on average 1.8268551236749118) internal successors, (14476), 7924 states have internal predecessors, (14476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:46:23,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7925 states to 7925 states and 14476 transitions. [2024-11-09 19:46:23,257 INFO L78 Accepts]: Start accepts. Automaton has 7925 states and 14476 transitions. Word has length 1350 [2024-11-09 19:46:23,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:46:23,258 INFO L471 AbstractCegarLoop]: Abstraction has 7925 states and 14476 transitions. [2024-11-09 19:46:23,258 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:46:23,258 INFO L276 IsEmpty]: Start isEmpty. Operand 7925 states and 14476 transitions. [2024-11-09 19:46:23,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1400 [2024-11-09 19:46:23,281 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:46:23,281 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-09 19:46:23,300 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-09 19:46:23,482 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:46:23,482 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:46:23,483 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:46:23,483 INFO L85 PathProgramCache]: Analyzing trace with hash -1067982666, now seen corresponding path program 1 times [2024-11-09 19:46:23,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:46:23,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296765121] [2024-11-09 19:46:23,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:46:23,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:46:23,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:46:25,340 INFO L134 CoverageAnalysis]: Checked inductivity of 4032 backedges. 1954 proven. 102 refuted. 0 times theorem prover too weak. 1976 trivial. 0 not checked. [2024-11-09 19:46:25,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:46:25,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296765121] [2024-11-09 19:46:25,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296765121] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:46:25,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [541135861] [2024-11-09 19:46:25,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:46:25,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:46:25,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:46:25,343 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 19:46:25,344 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 19:46:25,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:46:25,746 INFO L255 TraceCheckSpWp]: Trace formula consists of 1628 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 19:46:25,757 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:46:25,997 INFO L134 CoverageAnalysis]: Checked inductivity of 4032 backedges. 1468 proven. 0 refuted. 0 times theorem prover too weak. 2564 trivial. 0 not checked. [2024-11-09 19:46:25,997 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 19:46:25,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [541135861] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:46:25,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 19:46:25,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-11-09 19:46:25,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676088472] [2024-11-09 19:46:25,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:46:25,999 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:46:26,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:46:26,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:46:26,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-09 19:46:26,002 INFO L87 Difference]: Start difference. First operand 7925 states and 14476 transitions. Second operand has 3 states, 3 states have (on average 168.33333333333334) internal successors, (505), 3 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:46:27,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:46:27,107 INFO L93 Difference]: Finished difference Result 15518 states and 28356 transitions. [2024-11-09 19:46:27,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:46:27,108 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 168.33333333333334) internal successors, (505), 3 states have internal predecessors, (505), 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 1399 [2024-11-09 19:46:27,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:46:27,125 INFO L225 Difference]: With dead ends: 15518 [2024-11-09 19:46:27,126 INFO L226 Difference]: Without dead ends: 7925 [2024-11-09 19:46:27,134 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1403 GetRequests, 1398 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-09 19:46:27,134 INFO L432 NwaCegarLoop]: 630 mSDtfsCounter, 408 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1269 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 408 SdHoareTripleChecker+Valid, 636 SdHoareTripleChecker+Invalid, 1346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-09 19:46:27,135 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [408 Valid, 636 Invalid, 1346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1269 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-09 19:46:27,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7925 states. [2024-11-09 19:46:27,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7925 to 7925. [2024-11-09 19:46:27,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7925 states, 7924 states have (on average 1.8209237758707724) internal successors, (14429), 7924 states have internal predecessors, (14429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:46:27,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7925 states to 7925 states and 14429 transitions. [2024-11-09 19:46:27,235 INFO L78 Accepts]: Start accepts. Automaton has 7925 states and 14429 transitions. Word has length 1399 [2024-11-09 19:46:27,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:46:27,236 INFO L471 AbstractCegarLoop]: Abstraction has 7925 states and 14429 transitions. [2024-11-09 19:46:27,236 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 168.33333333333334) internal successors, (505), 3 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:46:27,236 INFO L276 IsEmpty]: Start isEmpty. Operand 7925 states and 14429 transitions. [2024-11-09 19:46:27,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1671 [2024-11-09 19:46:27,263 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:46:27,264 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-09 19:46:27,283 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 19:46:27,465 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:46:27,465 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:46:27,465 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:46:27,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1221914086, now seen corresponding path program 1 times [2024-11-09 19:46:27,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:46:27,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125750818] [2024-11-09 19:46:27,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:46:27,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:46:27,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:46:29,678 INFO L134 CoverageAnalysis]: Checked inductivity of 5021 backedges. 2418 proven. 102 refuted. 0 times theorem prover too weak. 2501 trivial. 0 not checked. [2024-11-09 19:46:29,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:46:29,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125750818] [2024-11-09 19:46:29,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125750818] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:46:29,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [869164457] [2024-11-09 19:46:29,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:46:29,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:46:29,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:46:29,681 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 19:46:29,682 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 19:46:30,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:46:30,125 INFO L255 TraceCheckSpWp]: Trace formula consists of 1899 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 19:46:30,138 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:46:30,390 INFO L134 CoverageAnalysis]: Checked inductivity of 5021 backedges. 1625 proven. 0 refuted. 0 times theorem prover too weak. 3396 trivial. 0 not checked. [2024-11-09 19:46:30,390 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 19:46:30,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [869164457] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:46:30,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 19:46:30,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-11-09 19:46:30,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212706947] [2024-11-09 19:46:30,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:46:30,395 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:46:30,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:46:30,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:46:30,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-09 19:46:30,396 INFO L87 Difference]: Start difference. First operand 7925 states and 14429 transitions. Second operand has 3 states, 3 states have (on average 176.33333333333334) internal successors, (529), 3 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:46:31,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:46:31,525 INFO L93 Difference]: Finished difference Result 20138 states and 36692 transitions. [2024-11-09 19:46:31,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:46:31,525 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 176.33333333333334) internal successors, (529), 3 states have internal predecessors, (529), 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 1670 [2024-11-09 19:46:31,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:46:31,548 INFO L225 Difference]: With dead ends: 20138 [2024-11-09 19:46:31,549 INFO L226 Difference]: Without dead ends: 12545 [2024-11-09 19:46:31,558 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1674 GetRequests, 1669 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-09 19:46:31,558 INFO L432 NwaCegarLoop]: 677 mSDtfsCounter, 402 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1303 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 683 SdHoareTripleChecker+Invalid, 1361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 1303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-09 19:46:31,559 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [402 Valid, 683 Invalid, 1361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 1303 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-09 19:46:31,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12545 states. [2024-11-09 19:46:31,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12545 to 11555. [2024-11-09 19:46:31,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11555 states, 11554 states have (on average 1.8193699151808898) internal successors, (21021), 11554 states have internal predecessors, (21021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:46:31,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11555 states to 11555 states and 21021 transitions. [2024-11-09 19:46:31,709 INFO L78 Accepts]: Start accepts. Automaton has 11555 states and 21021 transitions. Word has length 1670 [2024-11-09 19:46:31,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:46:31,710 INFO L471 AbstractCegarLoop]: Abstraction has 11555 states and 21021 transitions. [2024-11-09 19:46:31,711 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 176.33333333333334) internal successors, (529), 3 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:46:31,711 INFO L276 IsEmpty]: Start isEmpty. Operand 11555 states and 21021 transitions. [2024-11-09 19:46:31,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1718 [2024-11-09 19:46:31,741 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:46:31,741 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-09 19:46:31,760 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 19:46:31,942 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-09 19:46:31,942 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:46:31,943 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:46:31,943 INFO L85 PathProgramCache]: Analyzing trace with hash -1005664668, now seen corresponding path program 1 times [2024-11-09 19:46:31,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:46:31,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660323777] [2024-11-09 19:46:31,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:46:31,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:46:32,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:46:34,204 INFO L134 CoverageAnalysis]: Checked inductivity of 5286 backedges. 2512 proven. 102 refuted. 0 times theorem prover too weak. 2672 trivial. 0 not checked. [2024-11-09 19:46:34,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:46:34,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660323777] [2024-11-09 19:46:34,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660323777] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:46:34,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1795705265] [2024-11-09 19:46:34,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:46:34,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:46:34,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:46:34,207 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 19:46:34,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 19:46:34,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:46:34,733 INFO L255 TraceCheckSpWp]: Trace formula consists of 1948 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 19:46:34,746 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:46:35,006 INFO L134 CoverageAnalysis]: Checked inductivity of 5286 backedges. 2678 proven. 0 refuted. 0 times theorem prover too weak. 2608 trivial. 0 not checked. [2024-11-09 19:46:35,007 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 19:46:35,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1795705265] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:46:35,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 19:46:35,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-11-09 19:46:35,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131489170] [2024-11-09 19:46:35,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:46:35,009 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:46:35,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:46:35,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:46:35,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-09 19:46:35,011 INFO L87 Difference]: Start difference. First operand 11555 states and 21021 transitions. Second operand has 3 states, 3 states have (on average 225.66666666666666) internal successors, (677), 3 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:46:36,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:46:36,092 INFO L93 Difference]: Finished difference Result 22778 states and 41446 transitions. [2024-11-09 19:46:36,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:46:36,093 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 225.66666666666666) internal successors, (677), 3 states have internal predecessors, (677), 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 1717 [2024-11-09 19:46:36,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:46:36,107 INFO L225 Difference]: With dead ends: 22778 [2024-11-09 19:46:36,107 INFO L226 Difference]: Without dead ends: 11555 [2024-11-09 19:46:36,118 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1721 GetRequests, 1716 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-09 19:46:36,118 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 411 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1271 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 411 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 1343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-09 19:46:36,119 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [411 Valid, 26 Invalid, 1343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1271 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-09 19:46:36,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11555 states. [2024-11-09 19:46:36,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11555 to 11555. [2024-11-09 19:46:36,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11555 states, 11554 states have (on average 1.8184178639432231) internal successors, (21010), 11554 states have internal predecessors, (21010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:46:36,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11555 states to 11555 states and 21010 transitions. [2024-11-09 19:46:36,248 INFO L78 Accepts]: Start accepts. Automaton has 11555 states and 21010 transitions. Word has length 1717 [2024-11-09 19:46:36,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:46:36,249 INFO L471 AbstractCegarLoop]: Abstraction has 11555 states and 21010 transitions. [2024-11-09 19:46:36,249 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 225.66666666666666) internal successors, (677), 3 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:46:36,249 INFO L276 IsEmpty]: Start isEmpty. Operand 11555 states and 21010 transitions. [2024-11-09 19:46:36,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1738 [2024-11-09 19:46:36,279 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:46:36,281 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:46:36,301 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-09 19:46:36,485 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:46:36,486 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:46:36,486 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:46:36,486 INFO L85 PathProgramCache]: Analyzing trace with hash 119178961, now seen corresponding path program 1 times [2024-11-09 19:46:36,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:46:36,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602758641] [2024-11-09 19:46:36,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:46:36,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:46:36,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:46:38,420 INFO L134 CoverageAnalysis]: Checked inductivity of 4816 backedges. 2397 proven. 102 refuted. 0 times theorem prover too weak. 2317 trivial. 0 not checked. [2024-11-09 19:46:38,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:46:38,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602758641] [2024-11-09 19:46:38,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602758641] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:46:38,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1507832674] [2024-11-09 19:46:38,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:46:38,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:46:38,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:46:38,422 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 19:46:38,424 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 19:46:38,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:46:38,803 INFO L255 TraceCheckSpWp]: Trace formula consists of 1953 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 19:46:38,815 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:46:39,492 INFO L134 CoverageAnalysis]: Checked inductivity of 4816 backedges. 2499 proven. 0 refuted. 0 times theorem prover too weak. 2317 trivial. 0 not checked. [2024-11-09 19:46:39,492 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 19:46:39,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1507832674] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:46:39,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 19:46:39,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-11-09 19:46:39,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002537191] [2024-11-09 19:46:39,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:46:39,494 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:46:39,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:46:39,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:46:39,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-09 19:46:39,496 INFO L87 Difference]: Start difference. First operand 11555 states and 21010 transitions. Second operand has 3 states, 3 states have (on average 273.0) internal successors, (819), 3 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:46:40,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:46:40,654 INFO L93 Difference]: Finished difference Result 26078 states and 47456 transitions. [2024-11-09 19:46:40,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:46:40,654 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 273.0) internal successors, (819), 3 states have internal predecessors, (819), 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 1737 [2024-11-09 19:46:40,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:46:40,669 INFO L225 Difference]: With dead ends: 26078 [2024-11-09 19:46:40,669 INFO L226 Difference]: Without dead ends: 14855 [2024-11-09 19:46:40,677 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1741 GetRequests, 1736 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-09 19:46:40,677 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 348 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1286 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 348 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 1341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-09 19:46:40,677 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [348 Valid, 77 Invalid, 1341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 1286 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-09 19:46:40,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14855 states. [2024-11-09 19:46:40,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14855 to 14855. [2024-11-09 19:46:40,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14855 states, 14854 states have (on average 1.8162784435168977) internal successors, (26979), 14854 states have internal predecessors, (26979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:46:40,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14855 states to 14855 states and 26979 transitions. [2024-11-09 19:46:40,837 INFO L78 Accepts]: Start accepts. Automaton has 14855 states and 26979 transitions. Word has length 1737 [2024-11-09 19:46:40,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:46:40,837 INFO L471 AbstractCegarLoop]: Abstraction has 14855 states and 26979 transitions. [2024-11-09 19:46:40,837 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 273.0) internal successors, (819), 3 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:46:40,838 INFO L276 IsEmpty]: Start isEmpty. Operand 14855 states and 26979 transitions. [2024-11-09 19:46:40,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1855 [2024-11-09 19:46:40,866 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:46:40,867 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:46:40,881 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-09 19:46:41,067 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:46:41,068 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:46:41,068 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:46:41,068 INFO L85 PathProgramCache]: Analyzing trace with hash -946775360, now seen corresponding path program 1 times [2024-11-09 19:46:41,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:46:41,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018356485] [2024-11-09 19:46:41,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:46:41,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:46:41,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:46:42,996 INFO L134 CoverageAnalysis]: Checked inductivity of 5656 backedges. 3885 proven. 0 refuted. 0 times theorem prover too weak. 1771 trivial. 0 not checked. [2024-11-09 19:46:42,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:46:42,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018356485] [2024-11-09 19:46:42,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018356485] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:46:42,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:46:42,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 19:46:42,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555862959] [2024-11-09 19:46:42,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:46:42,998 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:46:42,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:46:42,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:46:42,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:46:43,000 INFO L87 Difference]: Start difference. First operand 14855 states and 26979 transitions. Second operand has 4 states, 4 states have (on average 213.75) internal successors, (855), 4 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:46:44,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:46:44,585 INFO L93 Difference]: Finished difference Result 29388 states and 53372 transitions. [2024-11-09 19:46:44,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 19:46:44,586 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 213.75) internal successors, (855), 4 states have internal predecessors, (855), 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 1854 [2024-11-09 19:46:44,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:46:44,602 INFO L225 Difference]: With dead ends: 29388 [2024-11-09 19:46:44,602 INFO L226 Difference]: Without dead ends: 14865 [2024-11-09 19:46:44,611 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 19:46:44,612 INFO L432 NwaCegarLoop]: 688 mSDtfsCounter, 481 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 2364 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 481 SdHoareTripleChecker+Valid, 705 SdHoareTripleChecker+Invalid, 2385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 2364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-09 19:46:44,612 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [481 Valid, 705 Invalid, 2385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 2364 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-09 19:46:44,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14865 states. [2024-11-09 19:46:44,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14865 to 14855. [2024-11-09 19:46:44,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14855 states, 14854 states have (on average 1.816009155782954) internal successors, (26975), 14854 states have internal predecessors, (26975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:46:44,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14855 states to 14855 states and 26975 transitions. [2024-11-09 19:46:44,775 INFO L78 Accepts]: Start accepts. Automaton has 14855 states and 26975 transitions. Word has length 1854 [2024-11-09 19:46:44,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:46:44,777 INFO L471 AbstractCegarLoop]: Abstraction has 14855 states and 26975 transitions. [2024-11-09 19:46:44,777 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 213.75) internal successors, (855), 4 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:46:44,777 INFO L276 IsEmpty]: Start isEmpty. Operand 14855 states and 26975 transitions. [2024-11-09 19:46:44,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1988 [2024-11-09 19:46:44,805 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:46:44,805 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-09 19:46:44,805 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-09 19:46:44,806 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:46:44,806 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:46:44,806 INFO L85 PathProgramCache]: Analyzing trace with hash -342453201, now seen corresponding path program 1 times [2024-11-09 19:46:44,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:46:44,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134237798] [2024-11-09 19:46:44,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:46:44,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:46:45,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:46:48,454 INFO L134 CoverageAnalysis]: Checked inductivity of 6500 backedges. 4080 proven. 1032 refuted. 0 times theorem prover too weak. 1388 trivial. 0 not checked. [2024-11-09 19:46:48,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:46:48,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134237798] [2024-11-09 19:46:48,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134237798] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:46:48,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [831212509] [2024-11-09 19:46:48,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:46:48,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:46:48,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:46:48,456 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 19:46:48,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 19:46:48,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:46:48,900 INFO L255 TraceCheckSpWp]: Trace formula consists of 2240 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 19:46:48,914 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:46:51,085 INFO L134 CoverageAnalysis]: Checked inductivity of 6500 backedges. 2734 proven. 201 refuted. 0 times theorem prover too weak. 3565 trivial. 0 not checked. [2024-11-09 19:46:51,085 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 19:46:55,041 INFO L134 CoverageAnalysis]: Checked inductivity of 6500 backedges. 2734 proven. 201 refuted. 0 times theorem prover too weak. 3565 trivial. 0 not checked. [2024-11-09 19:46:55,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [831212509] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 19:46:55,042 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 19:46:55,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 3, 3] total 12 [2024-11-09 19:46:55,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793009926] [2024-11-09 19:46:55,043 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 19:46:55,047 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 19:46:55,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:46:55,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 19:46:55,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-11-09 19:46:55,050 INFO L87 Difference]: Start difference. First operand 14855 states and 26975 transitions. Second operand has 12 states, 12 states have (on average 173.5) internal successors, (2082), 12 states have internal predecessors, (2082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:47:03,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:47:03,073 INFO L93 Difference]: Finished difference Result 30048 states and 54555 transitions. [2024-11-09 19:47:03,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-09 19:47:03,073 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 173.5) internal successors, (2082), 12 states have internal predecessors, (2082), 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 1987 [2024-11-09 19:47:03,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:47:03,088 INFO L225 Difference]: With dead ends: 30048 [2024-11-09 19:47:03,088 INFO L226 Difference]: Without dead ends: 15525 [2024-11-09 19:47:03,097 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4001 GetRequests, 3980 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=153, Invalid=353, Unknown=0, NotChecked=0, Total=506 [2024-11-09 19:47:03,098 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 6864 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 14913 mSolverCounterSat, 220 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6864 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 15133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 220 IncrementalHoareTripleChecker+Valid, 14913 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2024-11-09 19:47:03,098 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6864 Valid, 141 Invalid, 15133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [220 Valid, 14913 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2024-11-09 19:47:03,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15525 states. [2024-11-09 19:47:03,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15525 to 14855. [2024-11-09 19:47:03,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14855 states, 14854 states have (on average 1.8089403527669314) internal successors, (26870), 14854 states have internal predecessors, (26870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:47:03,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14855 states to 14855 states and 26870 transitions. [2024-11-09 19:47:03,253 INFO L78 Accepts]: Start accepts. Automaton has 14855 states and 26870 transitions. Word has length 1987 [2024-11-09 19:47:03,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:47:03,253 INFO L471 AbstractCegarLoop]: Abstraction has 14855 states and 26870 transitions. [2024-11-09 19:47:03,254 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 173.5) internal successors, (2082), 12 states have internal predecessors, (2082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:47:03,254 INFO L276 IsEmpty]: Start isEmpty. Operand 14855 states and 26870 transitions. [2024-11-09 19:47:03,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2219 [2024-11-09 19:47:03,334 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:47:03,335 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-09 19:47:03,349 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-09 19:47:03,535 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-09 19:47:03,536 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:47:03,537 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:47:03,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1011601936, now seen corresponding path program 1 times [2024-11-09 19:47:03,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:47:03,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849223104] [2024-11-09 19:47:03,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:47:03,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:47:03,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat