./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-68.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/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/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-68.i -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 a50f9ed11f10306280cf680a91856fa84d69e79835a7539c0719fe95b31ba9a8 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 10:32:41,963 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 10:32:42,042 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 10:32:42,047 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 10:32:42,049 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 10:32:42,078 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 10:32:42,079 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 10:32:42,079 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 10:32:42,080 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 10:32:42,081 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 10:32:42,082 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 10:32:42,082 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 10:32:42,082 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 10:32:42,083 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 10:32:42,084 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 10:32:42,084 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 10:32:42,085 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 10:32:42,085 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 10:32:42,085 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 10:32:42,085 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 10:32:42,085 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 10:32:42,088 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 10:32:42,088 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 10:32:42,089 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 10:32:42,089 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 10:32:42,089 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 10:32:42,089 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 10:32:42,089 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 10:32:42,089 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 10:32:42,090 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 10:32:42,090 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 10:32:42,090 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 10:32:42,090 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 10:32:42,090 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 10:32:42,091 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 10:32:42,091 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 10:32:42,091 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 10:32:42,093 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 10:32:42,093 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 10:32:42,093 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 10:32:42,093 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 10:32:42,094 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 10:32:42,094 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a50f9ed11f10306280cf680a91856fa84d69e79835a7539c0719fe95b31ba9a8 [2024-11-22 10:32:42,334 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 10:32:42,360 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 10:32:42,362 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 10:32:42,363 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 10:32:42,364 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 10:32:42,365 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-68.i [2024-11-22 10:32:43,678 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 10:32:43,841 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 10:32:43,842 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-68.i [2024-11-22 10:32:43,850 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd39ff4e0/d93d280504834eae9b694b3de6906c0e/FLAGa1a47b2c4 [2024-11-22 10:32:44,244 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd39ff4e0/d93d280504834eae9b694b3de6906c0e [2024-11-22 10:32:44,246 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 10:32:44,248 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 10:32:44,249 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 10:32:44,249 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 10:32:44,253 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 10:32:44,254 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 10:32:44" (1/1) ... [2024-11-22 10:32:44,255 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a2451c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:32:44, skipping insertion in model container [2024-11-22 10:32:44,255 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 10:32:44" (1/1) ... [2024-11-22 10:32:44,282 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 10:32:44,427 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/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-68.i[916,929] [2024-11-22 10:32:44,500 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 10:32:44,514 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 10:32:44,524 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/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-68.i[916,929] [2024-11-22 10:32:44,575 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 10:32:44,608 INFO L204 MainTranslator]: Completed translation [2024-11-22 10:32:44,608 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:32:44 WrapperNode [2024-11-22 10:32:44,608 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 10:32:44,609 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 10:32:44,609 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 10:32:44,610 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 10:32:44,615 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:32:44" (1/1) ... [2024-11-22 10:32:44,626 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:32:44" (1/1) ... [2024-11-22 10:32:44,662 INFO L138 Inliner]: procedures = 26, calls = 53, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 390 [2024-11-22 10:32:44,662 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 10:32:44,663 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 10:32:44,663 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 10:32:44,663 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 10:32:44,672 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:32:44" (1/1) ... [2024-11-22 10:32:44,672 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:32:44" (1/1) ... [2024-11-22 10:32:44,677 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:32:44" (1/1) ... [2024-11-22 10:32:44,739 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]. [2024-11-22 10:32:44,743 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:32:44" (1/1) ... [2024-11-22 10:32:44,743 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:32:44" (1/1) ... [2024-11-22 10:32:44,769 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:32:44" (1/1) ... [2024-11-22 10:32:44,781 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:32:44" (1/1) ... [2024-11-22 10:32:44,798 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:32:44" (1/1) ... [2024-11-22 10:32:44,802 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:32:44" (1/1) ... [2024-11-22 10:32:44,834 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 10:32:44,839 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 10:32:44,839 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 10:32:44,839 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 10:32:44,840 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:32:44" (1/1) ... [2024-11-22 10:32:44,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 10:32:44,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 10:32:44,874 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) [2024-11-22 10:32:44,883 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 [2024-11-22 10:32:44,919 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 10:32:44,919 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-22 10:32:44,920 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-22 10:32:44,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 10:32:44,920 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 10:32:44,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 10:32:44,990 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 10:32:44,992 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 10:32:45,441 INFO L? ?]: Removed 48 outVars from TransFormulas that were not future-live. [2024-11-22 10:32:45,442 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 10:32:45,460 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 10:32:45,460 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-22 10:32:45,461 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 10:32:45 BoogieIcfgContainer [2024-11-22 10:32:45,461 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 10:32:45,464 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 10:32:45,464 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 10:32:45,466 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 10:32:45,467 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 10:32:44" (1/3) ... [2024-11-22 10:32:45,468 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ef1c12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 10:32:45, skipping insertion in model container [2024-11-22 10:32:45,469 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:32:44" (2/3) ... [2024-11-22 10:32:45,470 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ef1c12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 10:32:45, skipping insertion in model container [2024-11-22 10:32:45,470 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 10:32:45" (3/3) ... [2024-11-22 10:32:45,471 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_100-while_file-68.i [2024-11-22 10:32:45,485 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 10:32:45,485 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-22 10:32:45,560 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 10:32:45,574 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;@40bbf48c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 10:32:45,574 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-22 10:32:45,580 INFO L276 IsEmpty]: Start isEmpty. Operand has 163 states, 120 states have (on average 1.4583333333333333) internal successors, (175), 121 states have internal predecessors, (175), 40 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-11-22 10:32:45,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2024-11-22 10:32:45,600 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 10:32:45,601 INFO L215 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 10:32:45,602 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 10:32:45,607 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 10:32:45,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1492570003, now seen corresponding path program 1 times [2024-11-22 10:32:45,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 10:32:45,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736559265] [2024-11-22 10:32:45,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:32:45,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 10:32:45,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:32:46,094 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 3042 trivial. 0 not checked. [2024-11-22 10:32:46,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 10:32:46,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736559265] [2024-11-22 10:32:46,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736559265] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 10:32:46,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [856357287] [2024-11-22 10:32:46,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:32:46,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 10:32:46,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 10:32:46,099 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) [2024-11-22 10:32:46,100 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 10:32:46,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:32:46,275 INFO L255 TraceCheckSpWp]: Trace formula consists of 612 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-22 10:32:46,292 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 10:32:46,338 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 3042 trivial. 0 not checked. [2024-11-22 10:32:46,342 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 10:32:46,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [856357287] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 10:32:46,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 10:32:46,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-22 10:32:46,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633620932] [2024-11-22 10:32:46,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 10:32:46,349 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-22 10:32:46,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 10:32:46,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-22 10:32:46,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 10:32:46,374 INFO L87 Difference]: Start difference. First operand has 163 states, 120 states have (on average 1.4583333333333333) internal successors, (175), 121 states have internal predecessors, (175), 40 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) Second operand has 2 states, 2 states have (on average 37.0) internal successors, (74), 2 states have internal predecessors, (74), 2 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 2 states have call successors, (40) [2024-11-22 10:32:46,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 10:32:46,407 INFO L93 Difference]: Finished difference Result 319 states and 544 transitions. [2024-11-22 10:32:46,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-22 10:32:46,409 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 37.0) internal successors, (74), 2 states have internal predecessors, (74), 2 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 2 states have call successors, (40) Word has length 269 [2024-11-22 10:32:46,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 10:32:46,415 INFO L225 Difference]: With dead ends: 319 [2024-11-22 10:32:46,415 INFO L226 Difference]: Without dead ends: 159 [2024-11-22 10:32:46,418 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 270 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 10:32:46,422 INFO L432 NwaCegarLoop]: 248 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 10:32:46,422 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 10:32:46,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2024-11-22 10:32:46,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2024-11-22 10:32:46,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 117 states have (on average 1.435897435897436) internal successors, (168), 117 states have internal predecessors, (168), 40 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-11-22 10:32:46,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 248 transitions. [2024-11-22 10:32:46,467 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 248 transitions. Word has length 269 [2024-11-22 10:32:46,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 10:32:46,467 INFO L471 AbstractCegarLoop]: Abstraction has 159 states and 248 transitions. [2024-11-22 10:32:46,467 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 37.0) internal successors, (74), 2 states have internal predecessors, (74), 2 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 2 states have call successors, (40) [2024-11-22 10:32:46,468 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 248 transitions. [2024-11-22 10:32:46,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2024-11-22 10:32:46,474 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 10:32:46,474 INFO L215 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 10:32:46,482 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-22 10:32:46,678 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-22 10:32:46,679 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 10:32:46,679 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 10:32:46,680 INFO L85 PathProgramCache]: Analyzing trace with hash -1558472791, now seen corresponding path program 1 times [2024-11-22 10:32:46,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 10:32:46,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162763635] [2024-11-22 10:32:46,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:32:46,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 10:32:46,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:32:47,144 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-11-22 10:32:47,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 10:32:47,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162763635] [2024-11-22 10:32:47,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162763635] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 10:32:47,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 10:32:47,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 10:32:47,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37508234] [2024-11-22 10:32:47,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 10:32:47,149 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 10:32:47,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 10:32:47,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 10:32:47,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 10:32:47,152 INFO L87 Difference]: Start difference. First operand 159 states and 248 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-11-22 10:32:47,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 10:32:47,187 INFO L93 Difference]: Finished difference Result 315 states and 493 transitions. [2024-11-22 10:32:47,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 10:32:47,188 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) Word has length 269 [2024-11-22 10:32:47,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 10:32:47,193 INFO L225 Difference]: With dead ends: 315 [2024-11-22 10:32:47,193 INFO L226 Difference]: Without dead ends: 159 [2024-11-22 10:32:47,194 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 [2024-11-22 10:32:47,194 INFO L432 NwaCegarLoop]: 246 mSDtfsCounter, 0 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 489 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 10:32:47,195 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 489 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 10:32:47,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2024-11-22 10:32:47,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2024-11-22 10:32:47,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 117 states have (on average 1.4273504273504274) internal successors, (167), 117 states have internal predecessors, (167), 40 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-11-22 10:32:47,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 247 transitions. [2024-11-22 10:32:47,216 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 247 transitions. Word has length 269 [2024-11-22 10:32:47,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 10:32:47,219 INFO L471 AbstractCegarLoop]: Abstraction has 159 states and 247 transitions. [2024-11-22 10:32:47,219 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-11-22 10:32:47,219 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 247 transitions. [2024-11-22 10:32:47,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2024-11-22 10:32:47,222 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 10:32:47,222 INFO L215 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 10:32:47,223 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 10:32:47,223 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 10:32:47,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 10:32:47,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1952839577, now seen corresponding path program 1 times [2024-11-22 10:32:47,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 10:32:47,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955152793] [2024-11-22 10:32:47,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:32:47,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 10:32:47,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:32:48,942 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-11-22 10:32:48,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 10:32:48,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955152793] [2024-11-22 10:32:48,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955152793] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 10:32:48,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 10:32:48,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-22 10:32:48,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801997833] [2024-11-22 10:32:48,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 10:32:48,945 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 10:32:48,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 10:32:48,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 10:32:48,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-22 10:32:48,948 INFO L87 Difference]: Start difference. First operand 159 states and 247 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 2 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2024-11-22 10:32:49,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 10:32:49,850 INFO L93 Difference]: Finished difference Result 477 states and 733 transitions. [2024-11-22 10:32:49,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 10:32:49,850 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 2 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) Word has length 269 [2024-11-22 10:32:49,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 10:32:49,853 INFO L225 Difference]: With dead ends: 477 [2024-11-22 10:32:49,853 INFO L226 Difference]: Without dead ends: 321 [2024-11-22 10:32:49,854 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2024-11-22 10:32:49,854 INFO L432 NwaCegarLoop]: 220 mSDtfsCounter, 542 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 561 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 542 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-22 10:32:49,855 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [542 Valid, 589 Invalid, 589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 561 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-22 10:32:49,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2024-11-22 10:32:49,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 296. [2024-11-22 10:32:49,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 250 states have (on average 1.476) internal successors, (369), 251 states have internal predecessors, (369), 43 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (43), 42 states have call predecessors, (43), 43 states have call successors, (43) [2024-11-22 10:32:49,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 455 transitions. [2024-11-22 10:32:49,883 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 455 transitions. Word has length 269 [2024-11-22 10:32:49,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 10:32:49,884 INFO L471 AbstractCegarLoop]: Abstraction has 296 states and 455 transitions. [2024-11-22 10:32:49,885 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 2 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2024-11-22 10:32:49,885 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 455 transitions. [2024-11-22 10:32:49,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2024-11-22 10:32:49,888 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 10:32:49,888 INFO L215 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 10:32:49,888 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 10:32:49,888 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 10:32:49,889 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 10:32:49,889 INFO L85 PathProgramCache]: Analyzing trace with hash 753779817, now seen corresponding path program 1 times [2024-11-22 10:32:49,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 10:32:49,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686969976] [2024-11-22 10:32:49,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:32:49,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 10:32:50,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:32:50,261 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 9 proven. 108 refuted. 0 times theorem prover too weak. 3003 trivial. 0 not checked. [2024-11-22 10:32:50,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 10:32:50,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686969976] [2024-11-22 10:32:50,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686969976] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 10:32:50,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [712293932] [2024-11-22 10:32:50,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:32:50,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 10:32:50,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 10:32:50,269 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) [2024-11-22 10:32:50,277 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 10:32:50,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:32:50,432 INFO L255 TraceCheckSpWp]: Trace formula consists of 607 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-22 10:32:50,439 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 10:32:51,200 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 1543 proven. 147 refuted. 0 times theorem prover too weak. 1430 trivial. 0 not checked. [2024-11-22 10:32:51,200 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 10:32:51,617 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 81 proven. 150 refuted. 0 times theorem prover too weak. 2889 trivial. 0 not checked. [2024-11-22 10:32:51,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [712293932] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 10:32:51,618 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 10:32:51,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 15 [2024-11-22 10:32:51,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415514565] [2024-11-22 10:32:51,618 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 10:32:51,619 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-22 10:32:51,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 10:32:51,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-22 10:32:51,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2024-11-22 10:32:51,621 INFO L87 Difference]: Start difference. First operand 296 states and 455 transitions. Second operand has 15 states, 15 states have (on average 9.333333333333334) internal successors, (140), 15 states have internal predecessors, (140), 6 states have call successors, (102), 3 states have call predecessors, (102), 7 states have return successors, (104), 6 states have call predecessors, (104), 6 states have call successors, (104) [2024-11-22 10:32:52,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 10:32:52,120 INFO L93 Difference]: Finished difference Result 553 states and 843 transitions. [2024-11-22 10:32:52,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-22 10:32:52,120 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 9.333333333333334) internal successors, (140), 15 states have internal predecessors, (140), 6 states have call successors, (102), 3 states have call predecessors, (102), 7 states have return successors, (104), 6 states have call predecessors, (104), 6 states have call successors, (104) Word has length 269 [2024-11-22 10:32:52,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 10:32:52,142 INFO L225 Difference]: With dead ends: 553 [2024-11-22 10:32:52,142 INFO L226 Difference]: Without dead ends: 260 [2024-11-22 10:32:52,143 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 556 GetRequests, 530 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=235, Invalid=521, Unknown=0, NotChecked=0, Total=756 [2024-11-22 10:32:52,144 INFO L432 NwaCegarLoop]: 152 mSDtfsCounter, 535 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 479 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 536 SdHoareTripleChecker+Valid, 489 SdHoareTripleChecker+Invalid, 616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 10:32:52,144 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [536 Valid, 489 Invalid, 616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 479 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 10:32:52,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2024-11-22 10:32:52,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 258. [2024-11-22 10:32:52,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 209 states have (on average 1.3588516746411483) internal successors, (284), 210 states have internal predecessors, (284), 43 states have call successors, (43), 5 states have call predecessors, (43), 5 states have return successors, (43), 42 states have call predecessors, (43), 43 states have call successors, (43) [2024-11-22 10:32:52,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 370 transitions. [2024-11-22 10:32:52,175 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 370 transitions. Word has length 269 [2024-11-22 10:32:52,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 10:32:52,179 INFO L471 AbstractCegarLoop]: Abstraction has 258 states and 370 transitions. [2024-11-22 10:32:52,179 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 9.333333333333334) internal successors, (140), 15 states have internal predecessors, (140), 6 states have call successors, (102), 3 states have call predecessors, (102), 7 states have return successors, (104), 6 states have call predecessors, (104), 6 states have call successors, (104) [2024-11-22 10:32:52,180 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 370 transitions. [2024-11-22 10:32:52,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2024-11-22 10:32:52,182 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 10:32:52,186 INFO L215 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 10:32:52,199 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-22 10:32:52,387 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,SelfDestructingSolverStorable3 [2024-11-22 10:32:52,388 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 10:32:52,388 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 10:32:52,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1064010365, now seen corresponding path program 1 times [2024-11-22 10:32:52,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 10:32:52,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44250086] [2024-11-22 10:32:52,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:32:52,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 10:32:52,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:32:53,614 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-11-22 10:32:53,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 10:32:53,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44250086] [2024-11-22 10:32:53,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44250086] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 10:32:53,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 10:32:53,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-22 10:32:53,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749469419] [2024-11-22 10:32:53,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 10:32:53,616 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-22 10:32:53,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 10:32:53,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-22 10:32:53,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-22 10:32:53,617 INFO L87 Difference]: Start difference. First operand 258 states and 370 transitions. Second operand has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-11-22 10:32:54,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 10:32:54,729 INFO L93 Difference]: Finished difference Result 588 states and 838 transitions. [2024-11-22 10:32:54,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 10:32:54,731 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) Word has length 271 [2024-11-22 10:32:54,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 10:32:54,733 INFO L225 Difference]: With dead ends: 588 [2024-11-22 10:32:54,733 INFO L226 Difference]: Without dead ends: 333 [2024-11-22 10:32:54,734 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-11-22 10:32:54,735 INFO L432 NwaCegarLoop]: 187 mSDtfsCounter, 567 mSDsluCounter, 368 mSDsCounter, 0 mSdLazyCounter, 512 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 567 SdHoareTripleChecker+Valid, 555 SdHoareTripleChecker+Invalid, 539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-22 10:32:54,735 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [567 Valid, 555 Invalid, 539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 512 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-22 10:32:54,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2024-11-22 10:32:54,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 271. [2024-11-22 10:32:54,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 222 states have (on average 1.3738738738738738) internal successors, (305), 223 states have internal predecessors, (305), 43 states have call successors, (43), 5 states have call predecessors, (43), 5 states have return successors, (43), 42 states have call predecessors, (43), 43 states have call successors, (43) [2024-11-22 10:32:54,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 391 transitions. [2024-11-22 10:32:54,753 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 391 transitions. Word has length 271 [2024-11-22 10:32:54,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 10:32:54,756 INFO L471 AbstractCegarLoop]: Abstraction has 271 states and 391 transitions. [2024-11-22 10:32:54,757 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-11-22 10:32:54,757 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 391 transitions. [2024-11-22 10:32:54,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2024-11-22 10:32:54,760 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 10:32:54,760 INFO L215 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 10:32:54,760 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-22 10:32:54,760 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 10:32:54,760 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 10:32:54,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1642609029, now seen corresponding path program 1 times [2024-11-22 10:32:54,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 10:32:54,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530151922] [2024-11-22 10:32:54,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:32:54,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 10:32:54,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:32:57,052 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-11-22 10:32:57,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 10:32:57,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530151922] [2024-11-22 10:32:57,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530151922] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 10:32:57,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 10:32:57,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-22 10:32:57,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767379419] [2024-11-22 10:32:57,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 10:32:57,053 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 10:32:57,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 10:32:57,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 10:32:57,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-11-22 10:32:57,055 INFO L87 Difference]: Start difference. First operand 271 states and 391 transitions. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-11-22 10:32:58,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 10:32:58,920 INFO L93 Difference]: Finished difference Result 675 states and 959 transitions. [2024-11-22 10:32:58,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 10:32:58,922 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) Word has length 271 [2024-11-22 10:32:58,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 10:32:58,924 INFO L225 Difference]: With dead ends: 675 [2024-11-22 10:32:58,925 INFO L226 Difference]: Without dead ends: 407 [2024-11-22 10:32:58,925 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=85, Invalid=155, Unknown=0, NotChecked=0, Total=240 [2024-11-22 10:32:58,926 INFO L432 NwaCegarLoop]: 181 mSDtfsCounter, 770 mSDsluCounter, 528 mSDsCounter, 0 mSdLazyCounter, 981 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 770 SdHoareTripleChecker+Valid, 709 SdHoareTripleChecker+Invalid, 1009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 981 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-22 10:32:58,926 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [770 Valid, 709 Invalid, 1009 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 981 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-22 10:32:58,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2024-11-22 10:32:58,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 285. [2024-11-22 10:32:58,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 236 states have (on average 1.3771186440677967) internal successors, (325), 237 states have internal predecessors, (325), 43 states have call successors, (43), 5 states have call predecessors, (43), 5 states have return successors, (43), 42 states have call predecessors, (43), 43 states have call successors, (43) [2024-11-22 10:32:58,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 411 transitions. [2024-11-22 10:32:58,944 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 411 transitions. Word has length 271 [2024-11-22 10:32:58,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 10:32:58,945 INFO L471 AbstractCegarLoop]: Abstraction has 285 states and 411 transitions. [2024-11-22 10:32:58,945 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-11-22 10:32:58,946 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 411 transitions. [2024-11-22 10:32:58,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2024-11-22 10:32:58,947 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 10:32:58,947 INFO L215 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 10:32:58,947 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-22 10:32:58,947 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 10:32:58,948 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 10:32:58,948 INFO L85 PathProgramCache]: Analyzing trace with hash 362745351, now seen corresponding path program 1 times [2024-11-22 10:32:58,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 10:32:58,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600968850] [2024-11-22 10:32:58,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:32:58,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 10:32:59,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:32:59,411 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 84 proven. 33 refuted. 0 times theorem prover too weak. 3003 trivial. 0 not checked. [2024-11-22 10:32:59,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 10:32:59,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600968850] [2024-11-22 10:32:59,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600968850] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 10:32:59,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [574778470] [2024-11-22 10:32:59,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:32:59,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 10:32:59,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 10:32:59,416 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) [2024-11-22 10:32:59,421 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-22 10:32:59,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:32:59,547 INFO L255 TraceCheckSpWp]: Trace formula consists of 608 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-22 10:32:59,552 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 10:33:01,108 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 1456 proven. 57 refuted. 0 times theorem prover too weak. 1607 trivial. 0 not checked. [2024-11-22 10:33:01,108 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 10:33:01,985 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 228 proven. 3 refuted. 0 times theorem prover too weak. 2889 trivial. 0 not checked. [2024-11-22 10:33:01,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [574778470] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 10:33:01,985 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 10:33:01,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 20, 12] total 32 [2024-11-22 10:33:01,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807204547] [2024-11-22 10:33:01,986 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 10:33:01,986 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-22 10:33:01,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 10:33:01,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-22 10:33:01,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=774, Unknown=0, NotChecked=0, Total=992 [2024-11-22 10:33:01,988 INFO L87 Difference]: Start difference. First operand 285 states and 411 transitions. Second operand has 32 states, 31 states have (on average 4.67741935483871) internal successors, (145), 29 states have internal predecessors, (145), 6 states have call successors, (62), 5 states have call predecessors, (62), 10 states have return successors, (63), 8 states have call predecessors, (63), 6 states have call successors, (63) [2024-11-22 10:33:07,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 10:33:07,973 INFO L93 Difference]: Finished difference Result 1168 states and 1647 transitions. [2024-11-22 10:33:07,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2024-11-22 10:33:07,974 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 4.67741935483871) internal successors, (145), 29 states have internal predecessors, (145), 6 states have call successors, (62), 5 states have call predecessors, (62), 10 states have return successors, (63), 8 states have call predecessors, (63), 6 states have call successors, (63) Word has length 271 [2024-11-22 10:33:07,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 10:33:07,987 INFO L225 Difference]: With dead ends: 1168 [2024-11-22 10:33:07,987 INFO L226 Difference]: Without dead ends: 886 [2024-11-22 10:33:07,991 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 618 GetRequests, 527 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2495 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=2066, Invalid=6490, Unknown=0, NotChecked=0, Total=8556 [2024-11-22 10:33:07,995 INFO L432 NwaCegarLoop]: 307 mSDtfsCounter, 1372 mSDsluCounter, 2027 mSDsCounter, 0 mSdLazyCounter, 3789 mSolverCounterSat, 403 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1372 SdHoareTripleChecker+Valid, 2334 SdHoareTripleChecker+Invalid, 4192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 403 IncrementalHoareTripleChecker+Valid, 3789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-11-22 10:33:07,996 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1372 Valid, 2334 Invalid, 4192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [403 Valid, 3789 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-11-22 10:33:07,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 886 states. [2024-11-22 10:33:08,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 886 to 321. [2024-11-22 10:33:08,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 266 states have (on average 1.3383458646616542) internal successors, (356), 267 states have internal predecessors, (356), 43 states have call successors, (43), 11 states have call predecessors, (43), 11 states have return successors, (43), 42 states have call predecessors, (43), 43 states have call successors, (43) [2024-11-22 10:33:08,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 442 transitions. [2024-11-22 10:33:08,113 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 442 transitions. Word has length 271 [2024-11-22 10:33:08,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 10:33:08,114 INFO L471 AbstractCegarLoop]: Abstraction has 321 states and 442 transitions. [2024-11-22 10:33:08,114 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 4.67741935483871) internal successors, (145), 29 states have internal predecessors, (145), 6 states have call successors, (62), 5 states have call predecessors, (62), 10 states have return successors, (63), 8 states have call predecessors, (63), 6 states have call successors, (63) [2024-11-22 10:33:08,114 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 442 transitions. [2024-11-22 10:33:08,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2024-11-22 10:33:08,116 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 10:33:08,116 INFO L215 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 10:33:08,125 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-22 10:33:08,317 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 10:33:08,320 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 10:33:08,320 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 10:33:08,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1437161110, now seen corresponding path program 1 times [2024-11-22 10:33:08,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 10:33:08,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056767204] [2024-11-22 10:33:08,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:33:08,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 10:33:08,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:33:08,961 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-11-22 10:33:08,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 10:33:08,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056767204] [2024-11-22 10:33:08,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056767204] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 10:33:08,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 10:33:08,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-22 10:33:08,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836952383] [2024-11-22 10:33:08,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 10:33:08,964 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 10:33:08,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 10:33:08,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 10:33:08,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-22 10:33:08,965 INFO L87 Difference]: Start difference. First operand 321 states and 442 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-11-22 10:33:09,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 10:33:09,836 INFO L93 Difference]: Finished difference Result 1293 states and 1803 transitions. [2024-11-22 10:33:09,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 10:33:09,836 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) Word has length 272 [2024-11-22 10:33:09,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 10:33:09,840 INFO L225 Difference]: With dead ends: 1293 [2024-11-22 10:33:09,841 INFO L226 Difference]: Without dead ends: 975 [2024-11-22 10:33:09,842 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-11-22 10:33:09,842 INFO L432 NwaCegarLoop]: 485 mSDtfsCounter, 401 mSDsluCounter, 1288 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 401 SdHoareTripleChecker+Valid, 1773 SdHoareTripleChecker+Invalid, 587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-22 10:33:09,843 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [401 Valid, 1773 Invalid, 587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 538 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-22 10:33:09,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2024-11-22 10:33:09,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 536. [2024-11-22 10:33:09,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 536 states, 464 states have (on average 1.3620689655172413) internal successors, (632), 467 states have internal predecessors, (632), 57 states have call successors, (57), 14 states have call predecessors, (57), 14 states have return successors, (57), 54 states have call predecessors, (57), 57 states have call successors, (57) [2024-11-22 10:33:09,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 746 transitions. [2024-11-22 10:33:09,907 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 746 transitions. Word has length 272 [2024-11-22 10:33:09,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 10:33:09,908 INFO L471 AbstractCegarLoop]: Abstraction has 536 states and 746 transitions. [2024-11-22 10:33:09,908 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-11-22 10:33:09,908 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 746 transitions. [2024-11-22 10:33:09,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2024-11-22 10:33:09,910 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 10:33:09,910 INFO L215 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 10:33:09,910 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-22 10:33:09,911 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 10:33:09,911 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 10:33:09,911 INFO L85 PathProgramCache]: Analyzing trace with hash 850752483, now seen corresponding path program 1 times [2024-11-22 10:33:09,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 10:33:09,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432983240] [2024-11-22 10:33:09,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:33:09,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 10:33:10,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:33:10,376 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 39 proven. 78 refuted. 0 times theorem prover too weak. 3003 trivial. 0 not checked. [2024-11-22 10:33:10,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 10:33:10,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432983240] [2024-11-22 10:33:10,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432983240] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 10:33:10,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1162949248] [2024-11-22 10:33:10,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:33:10,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 10:33:10,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 10:33:10,380 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) [2024-11-22 10:33:10,381 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-22 10:33:10,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:33:10,521 INFO L255 TraceCheckSpWp]: Trace formula consists of 610 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-22 10:33:10,526 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 10:33:11,940 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 1403 proven. 282 refuted. 0 times theorem prover too weak. 1435 trivial. 0 not checked. [2024-11-22 10:33:11,940 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 10:33:13,264 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 9 proven. 108 refuted. 0 times theorem prover too weak. 3003 trivial. 0 not checked. [2024-11-22 10:33:13,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1162949248] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 10:33:13,265 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 10:33:13,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 13, 9] total 22 [2024-11-22 10:33:13,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740857453] [2024-11-22 10:33:13,265 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 10:33:13,266 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-22 10:33:13,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 10:33:13,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-22 10:33:13,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=355, Unknown=0, NotChecked=0, Total=462 [2024-11-22 10:33:13,267 INFO L87 Difference]: Start difference. First operand 536 states and 746 transitions. Second operand has 22 states, 22 states have (on average 9.136363636363637) internal successors, (201), 21 states have internal predecessors, (201), 7 states have call successors, (116), 4 states have call predecessors, (116), 7 states have return successors, (117), 7 states have call predecessors, (117), 7 states have call successors, (117) [2024-11-22 10:33:15,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 10:33:15,396 INFO L93 Difference]: Finished difference Result 1456 states and 1984 transitions. [2024-11-22 10:33:15,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-22 10:33:15,397 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 9.136363636363637) internal successors, (201), 21 states have internal predecessors, (201), 7 states have call successors, (116), 4 states have call predecessors, (116), 7 states have return successors, (117), 7 states have call predecessors, (117), 7 states have call successors, (117) Word has length 273 [2024-11-22 10:33:15,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 10:33:15,402 INFO L225 Difference]: With dead ends: 1456 [2024-11-22 10:33:15,402 INFO L226 Difference]: Without dead ends: 917 [2024-11-22 10:33:15,404 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 597 GetRequests, 526 SyntacticMatches, 15 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1081 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=838, Invalid=2468, Unknown=0, NotChecked=0, Total=3306 [2024-11-22 10:33:15,405 INFO L432 NwaCegarLoop]: 266 mSDtfsCounter, 1919 mSDsluCounter, 878 mSDsCounter, 0 mSdLazyCounter, 1417 mSolverCounterSat, 374 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1919 SdHoareTripleChecker+Valid, 1144 SdHoareTripleChecker+Invalid, 1791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 374 IncrementalHoareTripleChecker+Valid, 1417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-22 10:33:15,405 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1919 Valid, 1144 Invalid, 1791 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [374 Valid, 1417 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-22 10:33:15,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 917 states. [2024-11-22 10:33:15,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 917 to 735. [2024-11-22 10:33:15,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 735 states, 612 states have (on average 1.3169934640522876) internal successors, (806), 617 states have internal predecessors, (806), 96 states have call successors, (96), 26 states have call predecessors, (96), 26 states have return successors, (96), 91 states have call predecessors, (96), 96 states have call successors, (96) [2024-11-22 10:33:15,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 735 states to 735 states and 998 transitions. [2024-11-22 10:33:15,579 INFO L78 Accepts]: Start accepts. Automaton has 735 states and 998 transitions. Word has length 273 [2024-11-22 10:33:15,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 10:33:15,579 INFO L471 AbstractCegarLoop]: Abstraction has 735 states and 998 transitions. [2024-11-22 10:33:15,579 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 9.136363636363637) internal successors, (201), 21 states have internal predecessors, (201), 7 states have call successors, (116), 4 states have call predecessors, (116), 7 states have return successors, (117), 7 states have call predecessors, (117), 7 states have call successors, (117) [2024-11-22 10:33:15,580 INFO L276 IsEmpty]: Start isEmpty. Operand 735 states and 998 transitions. [2024-11-22 10:33:15,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2024-11-22 10:33:15,581 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 10:33:15,581 INFO L215 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 10:33:15,589 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-22 10:33:15,785 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 10:33:15,786 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 10:33:15,786 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 10:33:15,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1845599263, now seen corresponding path program 1 times [2024-11-22 10:33:15,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 10:33:15,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181750844] [2024-11-22 10:33:15,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:33:15,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 10:33:15,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:33:16,121 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 30 proven. 87 refuted. 0 times theorem prover too weak. 3003 trivial. 0 not checked. [2024-11-22 10:33:16,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 10:33:16,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181750844] [2024-11-22 10:33:16,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181750844] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 10:33:16,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [937949181] [2024-11-22 10:33:16,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:33:16,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 10:33:16,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 10:33:16,124 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) [2024-11-22 10:33:16,127 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-22 10:33:16,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:33:16,258 INFO L255 TraceCheckSpWp]: Trace formula consists of 613 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-22 10:33:16,262 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 10:33:16,808 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 1985 proven. 87 refuted. 0 times theorem prover too weak. 1048 trivial. 0 not checked. [2024-11-22 10:33:16,809 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 10:33:17,269 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 246 proven. 96 refuted. 0 times theorem prover too weak. 2778 trivial. 0 not checked. [2024-11-22 10:33:17,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [937949181] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 10:33:17,270 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 10:33:17,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 12, 12] total 24 [2024-11-22 10:33:17,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936819474] [2024-11-22 10:33:17,270 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 10:33:17,271 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-22 10:33:17,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 10:33:17,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-22 10:33:17,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=416, Unknown=0, NotChecked=0, Total=552 [2024-11-22 10:33:17,272 INFO L87 Difference]: Start difference. First operand 735 states and 998 transitions. Second operand has 24 states, 23 states have (on average 7.782608695652174) internal successors, (179), 22 states have internal predecessors, (179), 8 states have call successors, (90), 4 states have call predecessors, (90), 9 states have return successors, (92), 8 states have call predecessors, (92), 8 states have call successors, (92) [2024-11-22 10:33:20,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 10:33:20,867 INFO L93 Difference]: Finished difference Result 3695 states and 4866 transitions. [2024-11-22 10:33:20,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2024-11-22 10:33:20,868 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 7.782608695652174) internal successors, (179), 22 states have internal predecessors, (179), 8 states have call successors, (90), 4 states have call predecessors, (90), 9 states have return successors, (92), 8 states have call predecessors, (92), 8 states have call successors, (92) Word has length 273 [2024-11-22 10:33:20,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 10:33:20,909 INFO L225 Difference]: With dead ends: 3695 [2024-11-22 10:33:20,909 INFO L226 Difference]: Without dead ends: 2963 [2024-11-22 10:33:20,914 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 647 GetRequests, 541 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4075 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=2453, Invalid=9103, Unknown=0, NotChecked=0, Total=11556 [2024-11-22 10:33:20,915 INFO L432 NwaCegarLoop]: 236 mSDtfsCounter, 3279 mSDsluCounter, 1203 mSDsCounter, 0 mSdLazyCounter, 1511 mSolverCounterSat, 1038 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3279 SdHoareTripleChecker+Valid, 1439 SdHoareTripleChecker+Invalid, 2549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1038 IncrementalHoareTripleChecker+Valid, 1511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-22 10:33:20,916 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3279 Valid, 1439 Invalid, 2549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1038 Valid, 1511 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-22 10:33:20,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2963 states. [2024-11-22 10:33:21,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2963 to 1365. [2024-11-22 10:33:21,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1365 states, 1138 states have (on average 1.2706502636203867) internal successors, (1446), 1148 states have internal predecessors, (1446), 162 states have call successors, (162), 64 states have call predecessors, (162), 64 states have return successors, (162), 152 states have call predecessors, (162), 162 states have call successors, (162) [2024-11-22 10:33:21,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1365 states to 1365 states and 1770 transitions. [2024-11-22 10:33:21,185 INFO L78 Accepts]: Start accepts. Automaton has 1365 states and 1770 transitions. Word has length 273 [2024-11-22 10:33:21,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 10:33:21,185 INFO L471 AbstractCegarLoop]: Abstraction has 1365 states and 1770 transitions. [2024-11-22 10:33:21,186 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 7.782608695652174) internal successors, (179), 22 states have internal predecessors, (179), 8 states have call successors, (90), 4 states have call predecessors, (90), 9 states have return successors, (92), 8 states have call predecessors, (92), 8 states have call successors, (92) [2024-11-22 10:33:21,186 INFO L276 IsEmpty]: Start isEmpty. Operand 1365 states and 1770 transitions. [2024-11-22 10:33:21,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2024-11-22 10:33:21,188 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 10:33:21,188 INFO L215 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 10:33:21,196 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-22 10:33:21,388 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,SelfDestructingSolverStorable9 [2024-11-22 10:33:21,389 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 10:33:21,390 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 10:33:21,390 INFO L85 PathProgramCache]: Analyzing trace with hash -1885778492, now seen corresponding path program 1 times [2024-11-22 10:33:21,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 10:33:21,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639905050] [2024-11-22 10:33:21,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:33:21,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 10:33:21,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:33:21,593 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-11-22 10:33:21,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 10:33:21,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639905050] [2024-11-22 10:33:21,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639905050] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 10:33:21,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 10:33:21,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 10:33:21,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929830408] [2024-11-22 10:33:21,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 10:33:21,595 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 10:33:21,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 10:33:21,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 10:33:21,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 10:33:21,596 INFO L87 Difference]: Start difference. First operand 1365 states and 1770 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-11-22 10:33:22,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 10:33:22,064 INFO L93 Difference]: Finished difference Result 2887 states and 3765 transitions. [2024-11-22 10:33:22,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 10:33:22,068 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) Word has length 276 [2024-11-22 10:33:22,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 10:33:22,075 INFO L225 Difference]: With dead ends: 2887 [2024-11-22 10:33:22,075 INFO L226 Difference]: Without dead ends: 1525 [2024-11-22 10:33:22,077 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 10:33:22,077 INFO L432 NwaCegarLoop]: 240 mSDtfsCounter, 225 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 541 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 10:33:22,077 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 541 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 10:33:22,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1525 states. [2024-11-22 10:33:22,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1525 to 1381. [2024-11-22 10:33:22,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1381 states, 1154 states have (on average 1.266897746967071) internal successors, (1462), 1164 states have internal predecessors, (1462), 162 states have call successors, (162), 64 states have call predecessors, (162), 64 states have return successors, (162), 152 states have call predecessors, (162), 162 states have call successors, (162) [2024-11-22 10:33:22,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1381 states to 1381 states and 1786 transitions. [2024-11-22 10:33:22,326 INFO L78 Accepts]: Start accepts. Automaton has 1381 states and 1786 transitions. Word has length 276 [2024-11-22 10:33:22,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 10:33:22,326 INFO L471 AbstractCegarLoop]: Abstraction has 1381 states and 1786 transitions. [2024-11-22 10:33:22,327 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-11-22 10:33:22,327 INFO L276 IsEmpty]: Start isEmpty. Operand 1381 states and 1786 transitions. [2024-11-22 10:33:22,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2024-11-22 10:33:22,328 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 10:33:22,329 INFO L215 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 10:33:22,329 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-22 10:33:22,329 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 10:33:22,329 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 10:33:22,329 INFO L85 PathProgramCache]: Analyzing trace with hash 603750470, now seen corresponding path program 1 times [2024-11-22 10:33:22,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 10:33:22,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562847251] [2024-11-22 10:33:22,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:33:22,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 10:33:22,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:33:40,897 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 423 proven. 270 refuted. 0 times theorem prover too weak. 2427 trivial. 0 not checked. [2024-11-22 10:33:40,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 10:33:40,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562847251] [2024-11-22 10:33:40,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562847251] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 10:33:40,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [343981521] [2024-11-22 10:33:40,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:33:40,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 10:33:40,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 10:33:40,899 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) [2024-11-22 10:33:40,900 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-22 10:33:41,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:33:41,046 INFO L255 TraceCheckSpWp]: Trace formula consists of 608 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-22 10:33:41,050 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 10:33:41,940 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 2045 proven. 150 refuted. 0 times theorem prover too weak. 925 trivial. 0 not checked. [2024-11-22 10:33:41,940 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 10:33:42,812 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 207 proven. 135 refuted. 0 times theorem prover too weak. 2778 trivial. 0 not checked. [2024-11-22 10:33:42,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [343981521] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 10:33:42,812 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 10:33:42,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 12, 12] total 42 [2024-11-22 10:33:42,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364102340] [2024-11-22 10:33:42,813 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 10:33:42,813 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-22 10:33:42,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 10:33:42,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-22 10:33:42,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=286, Invalid=1436, Unknown=0, NotChecked=0, Total=1722 [2024-11-22 10:33:42,815 INFO L87 Difference]: Start difference. First operand 1381 states and 1786 transitions. Second operand has 42 states, 40 states have (on average 4.675) internal successors, (187), 40 states have internal predecessors, (187), 17 states have call successors, (108), 4 states have call predecessors, (108), 9 states have return successors, (109), 16 states have call predecessors, (109), 17 states have call successors, (109) [2024-11-22 10:33:51,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 10:33:51,473 INFO L93 Difference]: Finished difference Result 3993 states and 5127 transitions. [2024-11-22 10:33:51,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2024-11-22 10:33:51,473 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 40 states have (on average 4.675) internal successors, (187), 40 states have internal predecessors, (187), 17 states have call successors, (108), 4 states have call predecessors, (108), 9 states have return successors, (109), 16 states have call predecessors, (109), 17 states have call successors, (109) Word has length 276 [2024-11-22 10:33:51,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 10:33:51,481 INFO L225 Difference]: With dead ends: 3993 [2024-11-22 10:33:51,481 INFO L226 Difference]: Without dead ends: 2615 [2024-11-22 10:33:51,485 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 668 GetRequests, 563 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3011 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=2512, Invalid=8830, Unknown=0, NotChecked=0, Total=11342 [2024-11-22 10:33:51,486 INFO L432 NwaCegarLoop]: 130 mSDtfsCounter, 3824 mSDsluCounter, 1195 mSDsCounter, 0 mSdLazyCounter, 2812 mSolverCounterSat, 446 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3824 SdHoareTripleChecker+Valid, 1325 SdHoareTripleChecker+Invalid, 3258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 446 IncrementalHoareTripleChecker+Valid, 2812 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-11-22 10:33:51,486 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3824 Valid, 1325 Invalid, 3258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [446 Valid, 2812 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2024-11-22 10:33:51,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2615 states. [2024-11-22 10:33:51,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2615 to 621. [2024-11-22 10:33:51,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 621 states, 500 states have (on average 1.248) internal successors, (624), 500 states have internal predecessors, (624), 80 states have call successors, (80), 40 states have call predecessors, (80), 40 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) [2024-11-22 10:33:51,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 784 transitions. [2024-11-22 10:33:51,638 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 784 transitions. Word has length 276 [2024-11-22 10:33:51,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 10:33:51,638 INFO L471 AbstractCegarLoop]: Abstraction has 621 states and 784 transitions. [2024-11-22 10:33:51,639 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 40 states have (on average 4.675) internal successors, (187), 40 states have internal predecessors, (187), 17 states have call successors, (108), 4 states have call predecessors, (108), 9 states have return successors, (109), 16 states have call predecessors, (109), 17 states have call successors, (109) [2024-11-22 10:33:51,639 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 784 transitions. [2024-11-22 10:33:51,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2024-11-22 10:33:51,640 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 10:33:51,640 INFO L215 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 10:33:51,650 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-22 10:33:51,841 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 10:33:51,842 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 10:33:51,842 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 10:33:51,842 INFO L85 PathProgramCache]: Analyzing trace with hash -768845091, now seen corresponding path program 1 times [2024-11-22 10:33:51,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 10:33:51,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725527843] [2024-11-22 10:33:51,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:33:51,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 10:33:51,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:33:58,087 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 9 proven. 108 refuted. 0 times theorem prover too weak. 3003 trivial. 0 not checked. [2024-11-22 10:33:58,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 10:33:58,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725527843] [2024-11-22 10:33:58,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725527843] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 10:33:58,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [667111869] [2024-11-22 10:33:58,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 10:33:58,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 10:33:58,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 10:33:58,091 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) [2024-11-22 10:33:58,094 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-22 10:33:58,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 10:33:58,244 INFO L255 TraceCheckSpWp]: Trace formula consists of 607 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-22 10:33:58,248 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 10:34:03,231 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 2083 proven. 279 refuted. 0 times theorem prover too weak. 758 trivial. 0 not checked. [2024-11-22 10:34:03,232 INFO L311 TraceCheckSpWp]: Computing backward predicates...