./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-41.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-41.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 d5e62ad5739342cd7c449104f0191747734ea5d5507ad0897461505e92cf32f4 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 00:04:03,522 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 00:04:03,594 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-19 00:04:03,602 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 00:04:03,605 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 00:04:03,636 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 00:04:03,637 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 00:04:03,637 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 00:04:03,638 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 00:04:03,638 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 00:04:03,639 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 00:04:03,639 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 00:04:03,640 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 00:04:03,642 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 00:04:03,642 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 00:04:03,643 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 00:04:03,643 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 00:04:03,643 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 00:04:03,644 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 00:04:03,644 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 00:04:03,644 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 00:04:03,648 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 00:04:03,649 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 00:04:03,649 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 00:04:03,649 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 00:04:03,649 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 00:04:03,650 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 00:04:03,650 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 00:04:03,650 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 00:04:03,650 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 00:04:03,651 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 00:04:03,651 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 00:04:03,651 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 00:04:03,651 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 00:04:03,652 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 00:04:03,652 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 00:04:03,654 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 00:04:03,655 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 00:04:03,655 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 00:04:03,656 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 00:04:03,656 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 00:04:03,656 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 00:04:03,656 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d5e62ad5739342cd7c449104f0191747734ea5d5507ad0897461505e92cf32f4 [2024-11-19 00:04:03,916 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 00:04:03,943 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 00:04:03,946 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 00:04:03,948 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 00:04:03,948 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 00:04:03,949 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-41.i [2024-11-19 00:04:05,472 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 00:04:05,766 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 00:04:05,770 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-41.i [2024-11-19 00:04:05,794 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2cb258cd/cd9a2a33d52f47d2925750970ee31305/FLAG209de715c [2024-11-19 00:04:05,808 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2cb258cd/cd9a2a33d52f47d2925750970ee31305 [2024-11-19 00:04:05,811 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 00:04:05,813 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 00:04:05,814 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 00:04:05,814 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 00:04:05,820 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 00:04:05,821 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 12:04:05" (1/1) ... [2024-11-19 00:04:05,822 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5013f8c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:04:05, skipping insertion in model container [2024-11-19 00:04:05,822 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 12:04:05" (1/1) ... [2024-11-19 00:04:05,879 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 00:04:06,083 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_operatoramount_amount500_file-41.i[916,929] [2024-11-19 00:04:06,368 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 00:04:06,388 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 00:04:06,403 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_operatoramount_amount500_file-41.i[916,929] [2024-11-19 00:04:06,499 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 00:04:06,523 INFO L204 MainTranslator]: Completed translation [2024-11-19 00:04:06,523 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:04:06 WrapperNode [2024-11-19 00:04:06,523 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 00:04:06,524 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 00:04:06,525 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 00:04:06,525 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 00:04:06,532 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:04:06" (1/1) ... [2024-11-19 00:04:06,563 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:04:06" (1/1) ... [2024-11-19 00:04:06,638 INFO L138 Inliner]: procedures = 26, calls = 74, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 681 [2024-11-19 00:04:06,642 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 00:04:06,643 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 00:04:06,643 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 00:04:06,643 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 00:04:06,654 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:04:06" (1/1) ... [2024-11-19 00:04:06,655 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:04:06" (1/1) ... [2024-11-19 00:04:06,671 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:04:06" (1/1) ... [2024-11-19 00:04:06,721 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]. [2024-11-19 00:04:06,721 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:04:06" (1/1) ... [2024-11-19 00:04:06,721 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:04:06" (1/1) ... [2024-11-19 00:04:06,756 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:04:06" (1/1) ... [2024-11-19 00:04:06,772 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:04:06" (1/1) ... [2024-11-19 00:04:06,786 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:04:06" (1/1) ... [2024-11-19 00:04:06,802 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:04:06" (1/1) ... [2024-11-19 00:04:06,818 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 00:04:06,819 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 00:04:06,819 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 00:04:06,820 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 00:04:06,820 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:04:06" (1/1) ... [2024-11-19 00:04:06,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 00:04:06,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 00:04:06,858 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) [2024-11-19 00:04:06,862 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 [2024-11-19 00:04:06,918 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 00:04:06,918 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-19 00:04:06,919 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-19 00:04:06,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 00:04:06,919 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 00:04:06,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 00:04:07,076 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 00:04:07,078 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 00:04:08,293 INFO L? ?]: Removed 97 outVars from TransFormulas that were not future-live. [2024-11-19 00:04:08,293 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 00:04:08,312 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 00:04:08,312 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-19 00:04:08,313 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 12:04:08 BoogieIcfgContainer [2024-11-19 00:04:08,313 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 00:04:08,317 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 00:04:08,317 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 00:04:08,320 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 00:04:08,320 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 12:04:05" (1/3) ... [2024-11-19 00:04:08,321 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4461767e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 12:04:08, skipping insertion in model container [2024-11-19 00:04:08,322 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 12:04:06" (2/3) ... [2024-11-19 00:04:08,322 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4461767e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 12:04:08, skipping insertion in model container [2024-11-19 00:04:08,322 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 12:04:08" (3/3) ... [2024-11-19 00:04:08,324 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount500_file-41.i [2024-11-19 00:04:08,340 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 00:04:08,340 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-19 00:04:08,427 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 00:04:08,433 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;@6381faf5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 00:04:08,433 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-19 00:04:08,439 INFO L276 IsEmpty]: Start isEmpty. Operand has 264 states, 200 states have (on average 1.565) internal successors, (313), 201 states have internal predecessors, (313), 61 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) [2024-11-19 00:04:08,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2024-11-19 00:04:08,461 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:04:08,462 INFO L215 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:04:08,462 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:04:08,468 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:04:08,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1759141129, now seen corresponding path program 1 times [2024-11-19 00:04:08,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:04:08,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015637923] [2024-11-19 00:04:08,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:04:08,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:04:08,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:04:09,198 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 7200 trivial. 0 not checked. [2024-11-19 00:04:09,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:04:09,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015637923] [2024-11-19 00:04:09,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015637923] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 00:04:09,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1762908262] [2024-11-19 00:04:09,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:04:09,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 00:04:09,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 00:04:09,205 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) [2024-11-19 00:04:09,207 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 00:04:09,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:04:09,627 INFO L255 TraceCheckSpWp]: Trace formula consists of 1124 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-19 00:04:09,658 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 00:04:09,715 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 120 proven. 0 refuted. 0 times theorem prover too weak. 7200 trivial. 0 not checked. [2024-11-19 00:04:09,715 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 00:04:09,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1762908262] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:04:09,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 00:04:09,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-19 00:04:09,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498566540] [2024-11-19 00:04:09,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:04:09,726 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-19 00:04:09,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:04:09,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-19 00:04:09,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-19 00:04:09,750 INFO L87 Difference]: Start difference. First operand has 264 states, 200 states have (on average 1.565) internal successors, (313), 201 states have internal predecessors, (313), 61 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) Second operand has 2 states, 2 states have (on average 62.5) internal successors, (125), 2 states have internal predecessors, (125), 2 states have call successors, (61), 2 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 2 states have call successors, (61) [2024-11-19 00:04:09,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:04:09,804 INFO L93 Difference]: Finished difference Result 520 states and 923 transitions. [2024-11-19 00:04:09,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-19 00:04:09,806 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 62.5) internal successors, (125), 2 states have internal predecessors, (125), 2 states have call successors, (61), 2 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 2 states have call successors, (61) Word has length 425 [2024-11-19 00:04:09,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:04:09,818 INFO L225 Difference]: With dead ends: 520 [2024-11-19 00:04:09,818 INFO L226 Difference]: Without dead ends: 259 [2024-11-19 00:04:09,824 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 426 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-19 00:04:09,828 INFO L432 NwaCegarLoop]: 424 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, 424 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 [2024-11-19 00:04:09,829 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 00:04:09,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2024-11-19 00:04:09,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 259. [2024-11-19 00:04:09,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 196 states have (on average 1.5408163265306123) internal successors, (302), 196 states have internal predecessors, (302), 61 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) [2024-11-19 00:04:09,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 424 transitions. [2024-11-19 00:04:09,903 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 424 transitions. Word has length 425 [2024-11-19 00:04:09,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:04:09,903 INFO L471 AbstractCegarLoop]: Abstraction has 259 states and 424 transitions. [2024-11-19 00:04:09,904 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 62.5) internal successors, (125), 2 states have internal predecessors, (125), 2 states have call successors, (61), 2 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 2 states have call successors, (61) [2024-11-19 00:04:09,904 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 424 transitions. [2024-11-19 00:04:09,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2024-11-19 00:04:09,917 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:04:09,917 INFO L215 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:04:09,939 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-19 00:04:10,118 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 [2024-11-19 00:04:10,119 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:04:10,119 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:04:10,120 INFO L85 PathProgramCache]: Analyzing trace with hash -995263291, now seen corresponding path program 1 times [2024-11-19 00:04:10,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:04:10,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263397533] [2024-11-19 00:04:10,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:04:10,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:04:10,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:04:10,575 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7320 trivial. 0 not checked. [2024-11-19 00:04:10,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:04:10,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263397533] [2024-11-19 00:04:10,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263397533] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:04:10,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:04:10,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 00:04:10,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774917592] [2024-11-19 00:04:10,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:04:10,580 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 00:04:10,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:04:10,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 00:04:10,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 00:04:10,582 INFO L87 Difference]: Start difference. First operand 259 states and 424 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2024-11-19 00:04:10,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:04:10,779 INFO L93 Difference]: Finished difference Result 758 states and 1242 transitions. [2024-11-19 00:04:10,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 00:04:10,780 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) Word has length 425 [2024-11-19 00:04:10,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:04:10,790 INFO L225 Difference]: With dead ends: 758 [2024-11-19 00:04:10,791 INFO L226 Difference]: Without dead ends: 502 [2024-11-19 00:04:10,792 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 [2024-11-19 00:04:10,793 INFO L432 NwaCegarLoop]: 764 mSDtfsCounter, 384 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 1149 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 00:04:10,794 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [384 Valid, 1149 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 00:04:10,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2024-11-19 00:04:10,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 309. [2024-11-19 00:04:10,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 246 states have (on average 1.5609756097560976) internal successors, (384), 246 states have internal predecessors, (384), 61 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) [2024-11-19 00:04:10,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 506 transitions. [2024-11-19 00:04:10,834 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 506 transitions. Word has length 425 [2024-11-19 00:04:10,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:04:10,837 INFO L471 AbstractCegarLoop]: Abstraction has 309 states and 506 transitions. [2024-11-19 00:04:10,838 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2024-11-19 00:04:10,838 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 506 transitions. [2024-11-19 00:04:10,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2024-11-19 00:04:10,863 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:04:10,863 INFO L215 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:04:10,864 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 00:04:10,864 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:04:10,865 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:04:10,866 INFO L85 PathProgramCache]: Analyzing trace with hash -2127711457, now seen corresponding path program 1 times [2024-11-19 00:04:10,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:04:10,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844938456] [2024-11-19 00:04:10,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:04:10,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:04:11,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:04:11,343 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7320 trivial. 0 not checked. [2024-11-19 00:04:11,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:04:11,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844938456] [2024-11-19 00:04:11,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844938456] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:04:11,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:04:11,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 00:04:11,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012576763] [2024-11-19 00:04:11,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:04:11,346 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 00:04:11,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:04:11,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 00:04:11,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 00:04:11,348 INFO L87 Difference]: Start difference. First operand 309 states and 506 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2024-11-19 00:04:11,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:04:11,515 INFO L93 Difference]: Finished difference Result 852 states and 1392 transitions. [2024-11-19 00:04:11,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 00:04:11,516 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) Word has length 426 [2024-11-19 00:04:11,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:04:11,524 INFO L225 Difference]: With dead ends: 852 [2024-11-19 00:04:11,525 INFO L226 Difference]: Without dead ends: 546 [2024-11-19 00:04:11,526 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 [2024-11-19 00:04:11,528 INFO L432 NwaCegarLoop]: 691 mSDtfsCounter, 368 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 1090 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 00:04:11,529 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [368 Valid, 1090 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 00:04:11,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2024-11-19 00:04:11,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 379. [2024-11-19 00:04:11,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 316 states have (on average 1.5791139240506329) internal successors, (499), 316 states have internal predecessors, (499), 61 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) [2024-11-19 00:04:11,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 621 transitions. [2024-11-19 00:04:11,576 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 621 transitions. Word has length 426 [2024-11-19 00:04:11,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:04:11,577 INFO L471 AbstractCegarLoop]: Abstraction has 379 states and 621 transitions. [2024-11-19 00:04:11,577 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2024-11-19 00:04:11,578 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 621 transitions. [2024-11-19 00:04:11,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2024-11-19 00:04:11,582 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:04:11,582 INFO L215 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:04:11,583 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 00:04:11,583 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:04:11,584 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:04:11,584 INFO L85 PathProgramCache]: Analyzing trace with hash 280954848, now seen corresponding path program 1 times [2024-11-19 00:04:11,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:04:11,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337339934] [2024-11-19 00:04:11,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:04:11,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:04:11,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:04:12,715 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7320 trivial. 0 not checked. [2024-11-19 00:04:12,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:04:12,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337339934] [2024-11-19 00:04:12,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337339934] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:04:12,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:04:12,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 00:04:12,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446647012] [2024-11-19 00:04:12,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:04:12,717 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 00:04:12,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:04:12,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 00:04:12,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 00:04:12,719 INFO L87 Difference]: Start difference. First operand 379 states and 621 transitions. Second operand has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2024-11-19 00:04:13,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:04:13,065 INFO L93 Difference]: Finished difference Result 1132 states and 1858 transitions. [2024-11-19 00:04:13,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 00:04:13,068 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) Word has length 426 [2024-11-19 00:04:13,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:04:13,073 INFO L225 Difference]: With dead ends: 1132 [2024-11-19 00:04:13,074 INFO L226 Difference]: Without dead ends: 756 [2024-11-19 00:04:13,075 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 [2024-11-19 00:04:13,076 INFO L432 NwaCegarLoop]: 420 mSDtfsCounter, 334 mSDsluCounter, 818 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 184 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 1238 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 184 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-19 00:04:13,076 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [334 Valid, 1238 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [184 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-19 00:04:13,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2024-11-19 00:04:13,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 489. [2024-11-19 00:04:13,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 489 states, 364 states have (on average 1.5164835164835164) internal successors, (552), 364 states have internal predecessors, (552), 122 states have call successors, (122), 2 states have call predecessors, (122), 2 states have return successors, (122), 122 states have call predecessors, (122), 122 states have call successors, (122) [2024-11-19 00:04:13,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 796 transitions. [2024-11-19 00:04:13,124 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 796 transitions. Word has length 426 [2024-11-19 00:04:13,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:04:13,127 INFO L471 AbstractCegarLoop]: Abstraction has 489 states and 796 transitions. [2024-11-19 00:04:13,127 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2024-11-19 00:04:13,127 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 796 transitions. [2024-11-19 00:04:13,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2024-11-19 00:04:13,133 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:04:13,133 INFO L215 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:04:13,134 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 00:04:13,134 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:04:13,134 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:04:13,137 INFO L85 PathProgramCache]: Analyzing trace with hash 2015059298, now seen corresponding path program 1 times [2024-11-19 00:04:13,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:04:13,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098591938] [2024-11-19 00:04:13,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:04:13,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:04:14,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:04:15,363 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7320 trivial. 0 not checked. [2024-11-19 00:04:15,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:04:15,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098591938] [2024-11-19 00:04:15,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098591938] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:04:15,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:04:15,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 00:04:15,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837413407] [2024-11-19 00:04:15,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:04:15,367 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 00:04:15,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:04:15,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 00:04:15,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 00:04:15,369 INFO L87 Difference]: Start difference. First operand 489 states and 796 transitions. Second operand has 5 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2024-11-19 00:04:16,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:04:16,018 INFO L93 Difference]: Finished difference Result 1153 states and 1890 transitions. [2024-11-19 00:04:16,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 00:04:16,019 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) Word has length 426 [2024-11-19 00:04:16,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:04:16,025 INFO L225 Difference]: With dead ends: 1153 [2024-11-19 00:04:16,025 INFO L226 Difference]: Without dead ends: 777 [2024-11-19 00:04:16,026 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-19 00:04:16,027 INFO L432 NwaCegarLoop]: 441 mSDtfsCounter, 347 mSDsluCounter, 1113 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 184 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 1554 SdHoareTripleChecker+Invalid, 378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 184 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-19 00:04:16,027 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [347 Valid, 1554 Invalid, 378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [184 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-19 00:04:16,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 777 states. [2024-11-19 00:04:16,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 777 to 491. [2024-11-19 00:04:16,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 491 states, 366 states have (on average 1.5136612021857923) internal successors, (554), 366 states have internal predecessors, (554), 122 states have call successors, (122), 2 states have call predecessors, (122), 2 states have return successors, (122), 122 states have call predecessors, (122), 122 states have call successors, (122) [2024-11-19 00:04:16,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 798 transitions. [2024-11-19 00:04:16,106 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 798 transitions. Word has length 426 [2024-11-19 00:04:16,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:04:16,107 INFO L471 AbstractCegarLoop]: Abstraction has 491 states and 798 transitions. [2024-11-19 00:04:16,107 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2024-11-19 00:04:16,108 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 798 transitions. [2024-11-19 00:04:16,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2024-11-19 00:04:16,111 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:04:16,112 INFO L215 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:04:16,112 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 00:04:16,112 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:04:16,113 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:04:16,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1793395752, now seen corresponding path program 1 times [2024-11-19 00:04:16,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:04:16,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813371701] [2024-11-19 00:04:16,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:04:16,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:04:16,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:04:17,453 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7320 trivial. 0 not checked. [2024-11-19 00:04:17,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:04:17,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813371701] [2024-11-19 00:04:17,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813371701] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:04:17,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:04:17,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 00:04:17,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402217877] [2024-11-19 00:04:17,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:04:17,456 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 00:04:17,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:04:17,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 00:04:17,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 00:04:17,457 INFO L87 Difference]: Start difference. First operand 491 states and 798 transitions. Second operand has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2024-11-19 00:04:17,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:04:17,795 INFO L93 Difference]: Finished difference Result 1360 states and 2209 transitions. [2024-11-19 00:04:17,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 00:04:17,796 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) Word has length 427 [2024-11-19 00:04:17,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:04:17,802 INFO L225 Difference]: With dead ends: 1360 [2024-11-19 00:04:17,802 INFO L226 Difference]: Without dead ends: 984 [2024-11-19 00:04:17,804 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 00:04:17,806 INFO L432 NwaCegarLoop]: 859 mSDtfsCounter, 736 mSDsluCounter, 672 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 736 SdHoareTripleChecker+Valid, 1531 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-19 00:04:17,808 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [736 Valid, 1531 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-19 00:04:17,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 984 states. [2024-11-19 00:04:17,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 984 to 775. [2024-11-19 00:04:17,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 775 states, 598 states have (on average 1.5234113712374582) internal successors, (911), 599 states have internal predecessors, (911), 173 states have call successors, (173), 3 states have call predecessors, (173), 3 states have return successors, (173), 172 states have call predecessors, (173), 173 states have call successors, (173) [2024-11-19 00:04:17,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 775 states to 775 states and 1257 transitions. [2024-11-19 00:04:17,896 INFO L78 Accepts]: Start accepts. Automaton has 775 states and 1257 transitions. Word has length 427 [2024-11-19 00:04:17,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:04:17,898 INFO L471 AbstractCegarLoop]: Abstraction has 775 states and 1257 transitions. [2024-11-19 00:04:17,899 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2024-11-19 00:04:17,899 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states and 1257 transitions. [2024-11-19 00:04:17,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2024-11-19 00:04:17,903 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:04:17,904 INFO L215 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:04:17,904 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 00:04:17,904 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:04:17,905 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:04:17,905 INFO L85 PathProgramCache]: Analyzing trace with hash -954362090, now seen corresponding path program 1 times [2024-11-19 00:04:17,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:04:17,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190363496] [2024-11-19 00:04:17,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:04:17,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:04:18,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:04:18,191 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7320 trivial. 0 not checked. [2024-11-19 00:04:18,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:04:18,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190363496] [2024-11-19 00:04:18,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190363496] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:04:18,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:04:18,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 00:04:18,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021963355] [2024-11-19 00:04:18,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:04:18,196 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 00:04:18,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:04:18,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 00:04:18,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 00:04:18,197 INFO L87 Difference]: Start difference. First operand 775 states and 1257 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2024-11-19 00:04:18,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:04:18,288 INFO L93 Difference]: Finished difference Result 1440 states and 2334 transitions. [2024-11-19 00:04:18,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 00:04:18,289 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) Word has length 427 [2024-11-19 00:04:18,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:04:18,295 INFO L225 Difference]: With dead ends: 1440 [2024-11-19 00:04:18,295 INFO L226 Difference]: Without dead ends: 784 [2024-11-19 00:04:18,297 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 [2024-11-19 00:04:18,298 INFO L432 NwaCegarLoop]: 588 mSDtfsCounter, 324 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 990 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 00:04:18,299 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [324 Valid, 990 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 00:04:18,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 784 states. [2024-11-19 00:04:18,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 784 to 647. [2024-11-19 00:04:18,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 647 states, 520 states have (on average 1.5442307692307693) internal successors, (803), 520 states have internal predecessors, (803), 122 states have call successors, (122), 4 states have call predecessors, (122), 4 states have return successors, (122), 122 states have call predecessors, (122), 122 states have call successors, (122) [2024-11-19 00:04:18,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 1047 transitions. [2024-11-19 00:04:18,361 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 1047 transitions. Word has length 427 [2024-11-19 00:04:18,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:04:18,362 INFO L471 AbstractCegarLoop]: Abstraction has 647 states and 1047 transitions. [2024-11-19 00:04:18,362 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2024-11-19 00:04:18,363 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 1047 transitions. [2024-11-19 00:04:18,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2024-11-19 00:04:18,366 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:04:18,366 INFO L215 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:04:18,366 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 00:04:18,366 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:04:18,367 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:04:18,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1752257304, now seen corresponding path program 1 times [2024-11-19 00:04:18,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:04:18,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600521815] [2024-11-19 00:04:18,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:04:18,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:04:19,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:04:20,811 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7320 trivial. 0 not checked. [2024-11-19 00:04:20,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:04:20,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600521815] [2024-11-19 00:04:20,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600521815] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:04:20,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:04:20,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-19 00:04:20,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175636182] [2024-11-19 00:04:20,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:04:20,813 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 00:04:20,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:04:20,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 00:04:20,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-19 00:04:20,815 INFO L87 Difference]: Start difference. First operand 647 states and 1047 transitions. Second operand has 7 states, 7 states have (on average 17.857142857142858) internal successors, (125), 7 states have internal predecessors, (125), 3 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 3 states have call predecessors, (61), 3 states have call successors, (61) [2024-11-19 00:04:22,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:04:22,677 INFO L93 Difference]: Finished difference Result 2386 states and 3885 transitions. [2024-11-19 00:04:22,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 00:04:22,678 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.857142857142858) internal successors, (125), 7 states have internal predecessors, (125), 3 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 3 states have call predecessors, (61), 3 states have call successors, (61) Word has length 427 [2024-11-19 00:04:22,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:04:22,688 INFO L225 Difference]: With dead ends: 2386 [2024-11-19 00:04:22,689 INFO L226 Difference]: Without dead ends: 1862 [2024-11-19 00:04:22,691 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2024-11-19 00:04:22,691 INFO L432 NwaCegarLoop]: 557 mSDtfsCounter, 1488 mSDsluCounter, 1284 mSDsCounter, 0 mSdLazyCounter, 609 mSolverCounterSat, 453 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1488 SdHoareTripleChecker+Valid, 1841 SdHoareTripleChecker+Invalid, 1062 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 453 IncrementalHoareTripleChecker+Valid, 609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-19 00:04:22,692 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1488 Valid, 1841 Invalid, 1062 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [453 Valid, 609 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-19 00:04:22,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1862 states. [2024-11-19 00:04:22,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1862 to 1711. [2024-11-19 00:04:22,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1711 states, 1499 states have (on average 1.5877251501000667) internal successors, (2380), 1500 states have internal predecessors, (2380), 203 states have call successors, (203), 8 states have call predecessors, (203), 8 states have return successors, (203), 202 states have call predecessors, (203), 203 states have call successors, (203) [2024-11-19 00:04:22,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1711 states to 1711 states and 2786 transitions. [2024-11-19 00:04:22,855 INFO L78 Accepts]: Start accepts. Automaton has 1711 states and 2786 transitions. Word has length 427 [2024-11-19 00:04:22,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:04:22,855 INFO L471 AbstractCegarLoop]: Abstraction has 1711 states and 2786 transitions. [2024-11-19 00:04:22,856 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.857142857142858) internal successors, (125), 7 states have internal predecessors, (125), 3 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 3 states have call predecessors, (61), 3 states have call successors, (61) [2024-11-19 00:04:22,856 INFO L276 IsEmpty]: Start isEmpty. Operand 1711 states and 2786 transitions. [2024-11-19 00:04:22,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2024-11-19 00:04:22,861 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:04:22,861 INFO L215 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:04:22,861 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-19 00:04:22,862 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:04:22,862 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:04:22,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1992497050, now seen corresponding path program 1 times [2024-11-19 00:04:22,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:04:22,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796715379] [2024-11-19 00:04:22,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:04:22,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:04:23,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:04:24,930 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7320 trivial. 0 not checked. [2024-11-19 00:04:24,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:04:24,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796715379] [2024-11-19 00:04:24,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796715379] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:04:24,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:04:24,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 00:04:24,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719786941] [2024-11-19 00:04:24,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:04:24,932 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 00:04:24,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:04:24,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 00:04:24,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 00:04:24,938 INFO L87 Difference]: Start difference. First operand 1711 states and 2786 transitions. Second operand has 5 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2024-11-19 00:04:25,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:04:25,801 INFO L93 Difference]: Finished difference Result 5875 states and 9628 transitions. [2024-11-19 00:04:25,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 00:04:25,805 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) Word has length 427 [2024-11-19 00:04:25,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:04:25,829 INFO L225 Difference]: With dead ends: 5875 [2024-11-19 00:04:25,829 INFO L226 Difference]: Without dead ends: 4300 [2024-11-19 00:04:25,834 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-19 00:04:25,836 INFO L432 NwaCegarLoop]: 611 mSDtfsCounter, 948 mSDsluCounter, 1263 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 319 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 948 SdHoareTripleChecker+Valid, 1874 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 319 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-19 00:04:25,837 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [948 Valid, 1874 Invalid, 403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [319 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-19 00:04:25,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4300 states. [2024-11-19 00:04:26,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4300 to 2917. [2024-11-19 00:04:26,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2917 states, 2558 states have (on average 1.5695856137607507) internal successors, (4015), 2560 states have internal predecessors, (4015), 345 states have call successors, (345), 13 states have call predecessors, (345), 13 states have return successors, (345), 343 states have call predecessors, (345), 345 states have call successors, (345) [2024-11-19 00:04:26,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2917 states to 2917 states and 4705 transitions. [2024-11-19 00:04:26,192 INFO L78 Accepts]: Start accepts. Automaton has 2917 states and 4705 transitions. Word has length 427 [2024-11-19 00:04:26,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:04:26,193 INFO L471 AbstractCegarLoop]: Abstraction has 2917 states and 4705 transitions. [2024-11-19 00:04:26,193 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2024-11-19 00:04:26,193 INFO L276 IsEmpty]: Start isEmpty. Operand 2917 states and 4705 transitions. [2024-11-19 00:04:26,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2024-11-19 00:04:26,200 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:04:26,200 INFO L215 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:04:26,201 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-19 00:04:26,201 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:04:26,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:04:26,202 INFO L85 PathProgramCache]: Analyzing trace with hash 2069397848, now seen corresponding path program 1 times [2024-11-19 00:04:26,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:04:26,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544395822] [2024-11-19 00:04:26,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:04:26,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:04:26,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:04:27,168 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7320 trivial. 0 not checked. [2024-11-19 00:04:27,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:04:27,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544395822] [2024-11-19 00:04:27,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544395822] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:04:27,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:04:27,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 00:04:27,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571368101] [2024-11-19 00:04:27,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:04:27,170 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 00:04:27,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:04:27,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 00:04:27,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 00:04:27,172 INFO L87 Difference]: Start difference. First operand 2917 states and 4705 transitions. Second operand has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2024-11-19 00:04:27,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:04:27,940 INFO L93 Difference]: Finished difference Result 8065 states and 12948 transitions. [2024-11-19 00:04:27,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 00:04:27,941 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) Word has length 427 [2024-11-19 00:04:27,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:04:27,974 INFO L225 Difference]: With dead ends: 8065 [2024-11-19 00:04:27,974 INFO L226 Difference]: Without dead ends: 5284 [2024-11-19 00:04:27,984 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-19 00:04:27,984 INFO L432 NwaCegarLoop]: 679 mSDtfsCounter, 769 mSDsluCounter, 1119 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 215 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 769 SdHoareTripleChecker+Valid, 1798 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 215 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-19 00:04:27,986 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [769 Valid, 1798 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [215 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-19 00:04:27,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5284 states. [2024-11-19 00:04:28,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5284 to 3661. [2024-11-19 00:04:28,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3661 states, 3302 states have (on average 1.566626287098728) internal successors, (5173), 3304 states have internal predecessors, (5173), 345 states have call successors, (345), 13 states have call predecessors, (345), 13 states have return successors, (345), 343 states have call predecessors, (345), 345 states have call successors, (345) [2024-11-19 00:04:28,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3661 states to 3661 states and 5863 transitions. [2024-11-19 00:04:28,322 INFO L78 Accepts]: Start accepts. Automaton has 3661 states and 5863 transitions. Word has length 427 [2024-11-19 00:04:28,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:04:28,323 INFO L471 AbstractCegarLoop]: Abstraction has 3661 states and 5863 transitions. [2024-11-19 00:04:28,324 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2024-11-19 00:04:28,324 INFO L276 IsEmpty]: Start isEmpty. Operand 3661 states and 5863 transitions. [2024-11-19 00:04:28,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2024-11-19 00:04:28,332 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:04:28,333 INFO L215 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:04:28,333 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-19 00:04:28,333 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:04:28,334 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:04:28,334 INFO L85 PathProgramCache]: Analyzing trace with hash -257049576, now seen corresponding path program 1 times [2024-11-19 00:04:28,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:04:28,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918713064] [2024-11-19 00:04:28,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:04:28,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:04:29,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:04:29,892 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 30 proven. 150 refuted. 0 times theorem prover too weak. 7140 trivial. 0 not checked. [2024-11-19 00:04:29,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:04:29,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918713064] [2024-11-19 00:04:29,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918713064] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 00:04:29,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1305254727] [2024-11-19 00:04:29,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:04:29,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 00:04:29,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 00:04:29,895 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) [2024-11-19 00:04:29,896 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 00:04:30,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:04:30,313 INFO L255 TraceCheckSpWp]: Trace formula consists of 1122 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 00:04:30,326 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 00:04:30,506 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 1998 proven. 27 refuted. 0 times theorem prover too weak. 5295 trivial. 0 not checked. [2024-11-19 00:04:30,506 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 00:04:30,852 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 153 proven. 27 refuted. 0 times theorem prover too weak. 7140 trivial. 0 not checked. [2024-11-19 00:04:30,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1305254727] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 00:04:30,853 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 00:04:30,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2024-11-19 00:04:30,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316047482] [2024-11-19 00:04:30,854 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 00:04:30,856 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 00:04:30,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:04:30,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 00:04:30,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-19 00:04:30,857 INFO L87 Difference]: Start difference. First operand 3661 states and 5863 transitions. Second operand has 8 states, 8 states have (on average 27.625) internal successors, (221), 8 states have internal predecessors, (221), 3 states have call successors, (120), 2 states have call predecessors, (120), 4 states have return successors, (122), 3 states have call predecessors, (122), 3 states have call successors, (122) [2024-11-19 00:04:32,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:04:32,178 INFO L93 Difference]: Finished difference Result 6147 states and 9779 transitions. [2024-11-19 00:04:32,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-19 00:04:32,179 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 27.625) internal successors, (221), 8 states have internal predecessors, (221), 3 states have call successors, (120), 2 states have call predecessors, (120), 4 states have return successors, (122), 3 states have call predecessors, (122), 3 states have call successors, (122) Word has length 427 [2024-11-19 00:04:32,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:04:32,196 INFO L225 Difference]: With dead ends: 6147 [2024-11-19 00:04:32,196 INFO L226 Difference]: Without dead ends: 2614 [2024-11-19 00:04:32,204 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 867 GetRequests, 851 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2024-11-19 00:04:32,205 INFO L432 NwaCegarLoop]: 413 mSDtfsCounter, 812 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 738 mSolverCounterSat, 218 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 823 SdHoareTripleChecker+Valid, 1053 SdHoareTripleChecker+Invalid, 956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 218 IncrementalHoareTripleChecker+Valid, 738 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-19 00:04:32,206 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [823 Valid, 1053 Invalid, 956 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [218 Valid, 738 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-19 00:04:32,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2614 states. [2024-11-19 00:04:32,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2614 to 2588. [2024-11-19 00:04:32,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2588 states, 2217 states have (on average 1.5155615696887685) internal successors, (3360), 2219 states have internal predecessors, (3360), 345 states have call successors, (345), 25 states have call predecessors, (345), 25 states have return successors, (345), 343 states have call predecessors, (345), 345 states have call successors, (345) [2024-11-19 00:04:32,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2588 states to 2588 states and 4050 transitions. [2024-11-19 00:04:32,481 INFO L78 Accepts]: Start accepts. Automaton has 2588 states and 4050 transitions. Word has length 427 [2024-11-19 00:04:32,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:04:32,482 INFO L471 AbstractCegarLoop]: Abstraction has 2588 states and 4050 transitions. [2024-11-19 00:04:32,483 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 27.625) internal successors, (221), 8 states have internal predecessors, (221), 3 states have call successors, (120), 2 states have call predecessors, (120), 4 states have return successors, (122), 3 states have call predecessors, (122), 3 states have call successors, (122) [2024-11-19 00:04:32,483 INFO L276 IsEmpty]: Start isEmpty. Operand 2588 states and 4050 transitions. [2024-11-19 00:04:32,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2024-11-19 00:04:32,493 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:04:32,494 INFO L215 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:04:32,521 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-19 00:04:32,694 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,SelfDestructingSolverStorable10 [2024-11-19 00:04:32,696 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:04:32,697 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:04:32,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1051985272, now seen corresponding path program 1 times [2024-11-19 00:04:32,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:04:32,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710870153] [2024-11-19 00:04:32,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:04:32,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:04:33,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:04:33,878 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7320 trivial. 0 not checked. [2024-11-19 00:04:33,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:04:33,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710870153] [2024-11-19 00:04:33,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710870153] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 00:04:33,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 00:04:33,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 00:04:33,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043917680] [2024-11-19 00:04:33,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 00:04:33,880 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 00:04:33,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:04:33,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 00:04:33,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-19 00:04:33,882 INFO L87 Difference]: Start difference. First operand 2588 states and 4050 transitions. Second operand has 5 states, 5 states have (on average 25.4) internal successors, (127), 5 states have internal predecessors, (127), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2024-11-19 00:04:34,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:04:34,481 INFO L93 Difference]: Finished difference Result 4296 states and 6716 transitions. [2024-11-19 00:04:34,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 00:04:34,482 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.4) internal successors, (127), 5 states have internal predecessors, (127), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) Word has length 429 [2024-11-19 00:04:34,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:04:34,495 INFO L225 Difference]: With dead ends: 4296 [2024-11-19 00:04:34,495 INFO L226 Difference]: Without dead ends: 1844 [2024-11-19 00:04:34,502 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-19 00:04:34,503 INFO L432 NwaCegarLoop]: 526 mSDtfsCounter, 564 mSDsluCounter, 445 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 564 SdHoareTripleChecker+Valid, 971 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-19 00:04:34,504 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [564 Valid, 971 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-19 00:04:34,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1844 states. [2024-11-19 00:04:34,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1844 to 1844. [2024-11-19 00:04:34,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1844 states, 1473 states have (on average 1.4419551934826884) internal successors, (2124), 1475 states have internal predecessors, (2124), 345 states have call successors, (345), 25 states have call predecessors, (345), 25 states have return successors, (345), 343 states have call predecessors, (345), 345 states have call successors, (345) [2024-11-19 00:04:34,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1844 states to 1844 states and 2814 transitions. [2024-11-19 00:04:34,754 INFO L78 Accepts]: Start accepts. Automaton has 1844 states and 2814 transitions. Word has length 429 [2024-11-19 00:04:34,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:04:34,755 INFO L471 AbstractCegarLoop]: Abstraction has 1844 states and 2814 transitions. [2024-11-19 00:04:34,755 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.4) internal successors, (127), 5 states have internal predecessors, (127), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2024-11-19 00:04:34,756 INFO L276 IsEmpty]: Start isEmpty. Operand 1844 states and 2814 transitions. [2024-11-19 00:04:34,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2024-11-19 00:04:34,760 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:04:34,760 INFO L215 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:04:34,760 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-19 00:04:34,761 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:04:34,761 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:04:34,761 INFO L85 PathProgramCache]: Analyzing trace with hash -1628124566, now seen corresponding path program 1 times [2024-11-19 00:04:34,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:04:34,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015252544] [2024-11-19 00:04:34,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:04:34,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:04:35,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:04:36,669 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 60 proven. 120 refuted. 0 times theorem prover too weak. 7140 trivial. 0 not checked. [2024-11-19 00:04:36,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:04:36,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015252544] [2024-11-19 00:04:36,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015252544] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 00:04:36,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [353105330] [2024-11-19 00:04:36,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:04:36,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 00:04:36,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 00:04:36,672 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) [2024-11-19 00:04:36,674 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 00:04:37,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:04:37,097 INFO L255 TraceCheckSpWp]: Trace formula consists of 1124 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 00:04:37,104 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 00:04:37,338 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 2850 proven. 45 refuted. 0 times theorem prover too weak. 4425 trivial. 0 not checked. [2024-11-19 00:04:37,339 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 00:04:37,690 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 135 proven. 45 refuted. 0 times theorem prover too weak. 7140 trivial. 0 not checked. [2024-11-19 00:04:37,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [353105330] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 00:04:37,690 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 00:04:37,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2024-11-19 00:04:37,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030693402] [2024-11-19 00:04:37,693 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 00:04:37,694 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-19 00:04:37,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:04:37,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-19 00:04:37,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-19 00:04:37,696 INFO L87 Difference]: Start difference. First operand 1844 states and 2814 transitions. Second operand has 9 states, 9 states have (on average 27.77777777777778) internal successors, (250), 9 states have internal predecessors, (250), 4 states have call successors, (137), 2 states have call predecessors, (137), 4 states have return successors, (138), 4 states have call predecessors, (138), 4 states have call successors, (138) [2024-11-19 00:04:38,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:04:38,807 INFO L93 Difference]: Finished difference Result 3615 states and 5481 transitions. [2024-11-19 00:04:38,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-19 00:04:38,808 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 27.77777777777778) internal successors, (250), 9 states have internal predecessors, (250), 4 states have call successors, (137), 2 states have call predecessors, (137), 4 states have return successors, (138), 4 states have call predecessors, (138), 4 states have call successors, (138) Word has length 430 [2024-11-19 00:04:38,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:04:38,820 INFO L225 Difference]: With dead ends: 3615 [2024-11-19 00:04:38,820 INFO L226 Difference]: Without dead ends: 1907 [2024-11-19 00:04:38,826 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 881 GetRequests, 859 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=154, Invalid=352, Unknown=0, NotChecked=0, Total=506 [2024-11-19 00:04:38,826 INFO L432 NwaCegarLoop]: 291 mSDtfsCounter, 913 mSDsluCounter, 763 mSDsCounter, 0 mSdLazyCounter, 574 mSolverCounterSat, 250 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 957 SdHoareTripleChecker+Valid, 1054 SdHoareTripleChecker+Invalid, 824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 250 IncrementalHoareTripleChecker+Valid, 574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-19 00:04:38,827 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [957 Valid, 1054 Invalid, 824 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [250 Valid, 574 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-19 00:04:38,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1907 states. [2024-11-19 00:04:39,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1907 to 1867. [2024-11-19 00:04:39,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1867 states, 1488 states have (on average 1.4220430107526882) internal successors, (2116), 1490 states have internal predecessors, (2116), 345 states have call successors, (345), 33 states have call predecessors, (345), 33 states have return successors, (345), 343 states have call predecessors, (345), 345 states have call successors, (345) [2024-11-19 00:04:39,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1867 states to 1867 states and 2806 transitions. [2024-11-19 00:04:39,077 INFO L78 Accepts]: Start accepts. Automaton has 1867 states and 2806 transitions. Word has length 430 [2024-11-19 00:04:39,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:04:39,078 INFO L471 AbstractCegarLoop]: Abstraction has 1867 states and 2806 transitions. [2024-11-19 00:04:39,079 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 27.77777777777778) internal successors, (250), 9 states have internal predecessors, (250), 4 states have call successors, (137), 2 states have call predecessors, (137), 4 states have return successors, (138), 4 states have call predecessors, (138), 4 states have call successors, (138) [2024-11-19 00:04:39,079 INFO L276 IsEmpty]: Start isEmpty. Operand 1867 states and 2806 transitions. [2024-11-19 00:04:39,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2024-11-19 00:04:39,085 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:04:39,085 INFO L215 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:04:39,106 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-19 00:04:39,286 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 00:04:39,286 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:04:39,287 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:04:39,287 INFO L85 PathProgramCache]: Analyzing trace with hash -798965575, now seen corresponding path program 1 times [2024-11-19 00:04:39,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:04:39,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111787193] [2024-11-19 00:04:39,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:04:39,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:04:40,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:04:41,035 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 63 proven. 117 refuted. 0 times theorem prover too weak. 7140 trivial. 0 not checked. [2024-11-19 00:04:41,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:04:41,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111787193] [2024-11-19 00:04:41,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111787193] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 00:04:41,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1795511502] [2024-11-19 00:04:41,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:04:41,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 00:04:41,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 00:04:41,038 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) [2024-11-19 00:04:41,040 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 00:04:41,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:04:41,492 INFO L255 TraceCheckSpWp]: Trace formula consists of 1126 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-19 00:04:41,503 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 00:04:43,062 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 3342 proven. 234 refuted. 0 times theorem prover too weak. 3744 trivial. 0 not checked. [2024-11-19 00:04:43,062 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 00:04:43,834 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 120 proven. 237 refuted. 0 times theorem prover too weak. 6963 trivial. 0 not checked. [2024-11-19 00:04:43,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1795511502] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 00:04:43,835 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 00:04:43,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 9] total 20 [2024-11-19 00:04:43,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190039758] [2024-11-19 00:04:43,835 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 00:04:43,836 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-19 00:04:43,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:04:43,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-19 00:04:43,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2024-11-19 00:04:43,839 INFO L87 Difference]: Start difference. First operand 1867 states and 2806 transitions. Second operand has 20 states, 19 states have (on average 19.894736842105264) internal successors, (378), 18 states have internal predecessors, (378), 8 states have call successors, (183), 4 states have call predecessors, (183), 8 states have return successors, (183), 8 states have call predecessors, (183), 8 states have call successors, (183) [2024-11-19 00:04:48,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:04:48,373 INFO L93 Difference]: Finished difference Result 7052 states and 10705 transitions. [2024-11-19 00:04:48,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-19 00:04:48,374 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 19.894736842105264) internal successors, (378), 18 states have internal predecessors, (378), 8 states have call successors, (183), 4 states have call predecessors, (183), 8 states have return successors, (183), 8 states have call predecessors, (183), 8 states have call successors, (183) Word has length 431 [2024-11-19 00:04:48,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:04:48,410 INFO L225 Difference]: With dead ends: 7052 [2024-11-19 00:04:48,410 INFO L226 Difference]: Without dead ends: 5329 [2024-11-19 00:04:48,419 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 900 GetRequests, 857 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 592 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=533, Invalid=1447, Unknown=0, NotChecked=0, Total=1980 [2024-11-19 00:04:48,420 INFO L432 NwaCegarLoop]: 713 mSDtfsCounter, 3240 mSDsluCounter, 5156 mSDsCounter, 0 mSdLazyCounter, 3874 mSolverCounterSat, 726 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3363 SdHoareTripleChecker+Valid, 5869 SdHoareTripleChecker+Invalid, 4600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 726 IncrementalHoareTripleChecker+Valid, 3874 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-11-19 00:04:48,421 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3363 Valid, 5869 Invalid, 4600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [726 Valid, 3874 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-11-19 00:04:48,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5329 states. [2024-11-19 00:04:48,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5329 to 2902. [2024-11-19 00:04:48,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2902 states, 2298 states have (on average 1.4142732811140122) internal successors, (3250), 2304 states have internal predecessors, (3250), 547 states have call successors, (547), 56 states have call predecessors, (547), 56 states have return successors, (547), 541 states have call predecessors, (547), 547 states have call successors, (547) [2024-11-19 00:04:48,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2902 states to 2902 states and 4344 transitions. [2024-11-19 00:04:48,864 INFO L78 Accepts]: Start accepts. Automaton has 2902 states and 4344 transitions. Word has length 431 [2024-11-19 00:04:48,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 00:04:48,865 INFO L471 AbstractCegarLoop]: Abstraction has 2902 states and 4344 transitions. [2024-11-19 00:04:48,866 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 19.894736842105264) internal successors, (378), 18 states have internal predecessors, (378), 8 states have call successors, (183), 4 states have call predecessors, (183), 8 states have return successors, (183), 8 states have call predecessors, (183), 8 states have call successors, (183) [2024-11-19 00:04:48,866 INFO L276 IsEmpty]: Start isEmpty. Operand 2902 states and 4344 transitions. [2024-11-19 00:04:48,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2024-11-19 00:04:48,870 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 00:04:48,871 INFO L215 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 00:04:48,891 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-19 00:04:49,074 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 00:04:49,075 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 00:04:49,079 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 00:04:49,080 INFO L85 PathProgramCache]: Analyzing trace with hash 2141762823, now seen corresponding path program 1 times [2024-11-19 00:04:49,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 00:04:49,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073067175] [2024-11-19 00:04:49,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:04:49,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 00:04:50,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:04:52,738 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 111 proven. 243 refuted. 0 times theorem prover too weak. 6966 trivial. 0 not checked. [2024-11-19 00:04:52,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 00:04:52,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073067175] [2024-11-19 00:04:52,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073067175] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 00:04:52,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [455167527] [2024-11-19 00:04:52,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 00:04:52,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 00:04:52,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 00:04:52,741 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) [2024-11-19 00:04:52,742 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-19 00:04:53,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 00:04:53,219 INFO L255 TraceCheckSpWp]: Trace formula consists of 1126 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-19 00:04:53,233 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 00:04:56,344 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 4828 proven. 514 refuted. 0 times theorem prover too weak. 1978 trivial. 0 not checked. [2024-11-19 00:04:56,344 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 00:04:58,182 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 276 proven. 426 refuted. 0 times theorem prover too weak. 6618 trivial. 0 not checked. [2024-11-19 00:04:58,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [455167527] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 00:04:58,182 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 00:04:58,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 23, 19] total 53 [2024-11-19 00:04:58,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677287825] [2024-11-19 00:04:58,183 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 00:04:58,184 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-11-19 00:04:58,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 00:04:58,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-11-19 00:04:58,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=2260, Unknown=0, NotChecked=0, Total=2756 [2024-11-19 00:04:58,187 INFO L87 Difference]: Start difference. First operand 2902 states and 4344 transitions. Second operand has 53 states, 50 states have (on average 7.92) internal successors, (396), 49 states have internal predecessors, (396), 16 states have call successors, (183), 7 states have call predecessors, (183), 14 states have return successors, (183), 15 states have call predecessors, (183), 16 states have call successors, (183) [2024-11-19 00:05:07,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 00:05:07,314 INFO L93 Difference]: Finished difference Result 13462 states and 19862 transitions. [2024-11-19 00:05:07,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2024-11-19 00:05:07,315 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 50 states have (on average 7.92) internal successors, (396), 49 states have internal predecessors, (396), 16 states have call successors, (183), 7 states have call predecessors, (183), 14 states have return successors, (183), 15 states have call predecessors, (183), 16 states have call successors, (183) Word has length 431 [2024-11-19 00:05:07,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 00:05:07,358 INFO L225 Difference]: With dead ends: 13462 [2024-11-19 00:05:07,358 INFO L226 Difference]: Without dead ends: 11810 [2024-11-19 00:05:07,373 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1002 GetRequests, 839 SyntacticMatches, 0 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9795 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=5163, Invalid=21897, Unknown=0, NotChecked=0, Total=27060 [2024-11-19 00:05:07,374 INFO L432 NwaCegarLoop]: 560 mSDtfsCounter, 7284 mSDsluCounter, 6589 mSDsCounter, 0 mSdLazyCounter, 5442 mSolverCounterSat, 1624 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7324 SdHoareTripleChecker+Valid, 7149 SdHoareTripleChecker+Invalid, 7066 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1624 IncrementalHoareTripleChecker+Valid, 5442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-11-19 00:05:07,374 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7324 Valid, 7149 Invalid, 7066 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1624 Valid, 5442 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2024-11-19 00:05:07,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11810 states.