./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-37.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_loopvsstraightlinecode_100-1loop_file-37.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 756b1d01df61c24805ab157361b9ee1a24103f9269ae5b644501d5253d658808 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 22:21:58,372 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 22:21:58,447 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 22:21:58,456 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 22:21:58,458 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 22:21:58,491 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 22:21:58,492 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 22:21:58,492 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 22:21:58,493 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 22:21:58,493 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 22:21:58,494 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 22:21:58,494 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 22:21:58,494 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 22:21:58,495 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 22:21:58,495 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 22:21:58,497 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 22:21:58,499 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 22:21:58,499 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 22:21:58,499 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 22:21:58,499 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 22:21:58,500 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 22:21:58,500 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 22:21:58,501 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 22:21:58,501 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 22:21:58,501 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 22:21:58,502 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 22:21:58,502 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 22:21:58,502 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 22:21:58,503 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 22:21:58,503 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 22:21:58,503 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 22:21:58,503 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 22:21:58,503 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 22:21:58,504 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 22:21:58,504 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 22:21:58,504 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 22:21:58,504 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 22:21:58,504 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 22:21:58,505 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 22:21:58,505 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 22:21:58,505 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 22:21:58,506 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 22:21:58,507 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 756b1d01df61c24805ab157361b9ee1a24103f9269ae5b644501d5253d658808 [2024-11-18 22:21:58,779 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 22:21:58,803 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 22:21:58,807 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 22:21:58,809 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 22:21:58,810 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 22:21:58,811 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-37.i [2024-11-18 22:22:00,373 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 22:22:00,679 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 22:22:00,681 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-37.i [2024-11-18 22:22:00,695 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6706e22c8/d9adbd00a21f4c718e5cc08ae5c1324c/FLAG26d7ea423 [2024-11-18 22:22:00,723 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6706e22c8/d9adbd00a21f4c718e5cc08ae5c1324c [2024-11-18 22:22:00,727 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 22:22:00,729 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 22:22:00,731 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 22:22:00,731 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 22:22:00,737 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 22:22:00,738 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 10:22:00" (1/1) ... [2024-11-18 22:22:00,740 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@181ea4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:22:00, skipping insertion in model container [2024-11-18 22:22:00,741 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 10:22:00" (1/1) ... [2024-11-18 22:22:00,784 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 22:22:01,048 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-37.i[916,929] [2024-11-18 22:22:01,159 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 22:22:01,175 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 22:22:01,188 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-37.i[916,929] [2024-11-18 22:22:01,230 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 22:22:01,261 INFO L204 MainTranslator]: Completed translation [2024-11-18 22:22:01,263 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:22:01 WrapperNode [2024-11-18 22:22:01,263 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 22:22:01,264 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 22:22:01,265 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 22:22:01,265 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 22:22:01,273 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:22:01" (1/1) ... [2024-11-18 22:22:01,291 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:22:01" (1/1) ... [2024-11-18 22:22:01,334 INFO L138 Inliner]: procedures = 26, calls = 33, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 236 [2024-11-18 22:22:01,335 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 22:22:01,335 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 22:22:01,336 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 22:22:01,336 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 22:22:01,346 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:22:01" (1/1) ... [2024-11-18 22:22:01,346 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:22:01" (1/1) ... [2024-11-18 22:22:01,350 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:22:01" (1/1) ... [2024-11-18 22:22:01,378 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]. [2024-11-18 22:22:01,379 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:22:01" (1/1) ... [2024-11-18 22:22:01,379 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:22:01" (1/1) ... [2024-11-18 22:22:01,395 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:22:01" (1/1) ... [2024-11-18 22:22:01,403 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:22:01" (1/1) ... [2024-11-18 22:22:01,410 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:22:01" (1/1) ... [2024-11-18 22:22:01,417 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:22:01" (1/1) ... [2024-11-18 22:22:01,426 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 22:22:01,431 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 22:22:01,431 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 22:22:01,431 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 22:22:01,432 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:22:01" (1/1) ... [2024-11-18 22:22:01,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 22:22:01,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 22:22:01,476 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) [2024-11-18 22:22:01,479 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 [2024-11-18 22:22:01,523 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 22:22:01,523 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-18 22:22:01,523 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-18 22:22:01,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 22:22:01,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 22:22:01,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 22:22:01,599 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 22:22:01,601 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 22:22:02,084 INFO L? ?]: Removed 30 outVars from TransFormulas that were not future-live. [2024-11-18 22:22:02,084 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 22:22:02,121 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 22:22:02,121 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 22:22:02,122 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:22:02 BoogieIcfgContainer [2024-11-18 22:22:02,122 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 22:22:02,124 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 22:22:02,125 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 22:22:02,128 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 22:22:02,129 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 10:22:00" (1/3) ... [2024-11-18 22:22:02,130 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66e49490 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 10:22:02, skipping insertion in model container [2024-11-18 22:22:02,130 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:22:01" (2/3) ... [2024-11-18 22:22:02,130 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66e49490 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 10:22:02, skipping insertion in model container [2024-11-18 22:22:02,130 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:22:02" (3/3) ... [2024-11-18 22:22:02,132 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_100-1loop_file-37.i [2024-11-18 22:22:02,166 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 22:22:02,167 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 22:22:02,234 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 22:22:02,242 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;@6cc2bc67, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 22:22:02,242 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 22:22:02,248 INFO L276 IsEmpty]: Start isEmpty. Operand has 94 states, 71 states have (on average 1.5070422535211268) internal successors, (107), 72 states have internal predecessors, (107), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-18 22:22:02,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2024-11-18 22:22:02,266 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:22:02,267 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 22:22:02,267 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:22:02,274 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:22:02,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1725202752, now seen corresponding path program 1 times [2024-11-18 22:22:02,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:22:02,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087694262] [2024-11-18 22:22:02,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:22:02,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:22:02,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:22:02,744 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 722 trivial. 0 not checked. [2024-11-18 22:22:02,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:22:02,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087694262] [2024-11-18 22:22:02,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087694262] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 22:22:02,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1282637033] [2024-11-18 22:22:02,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:22:02,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 22:22:02,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 22:22:02,751 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) [2024-11-18 22:22:02,752 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 22:22:02,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:22:02,947 INFO L255 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-18 22:22:02,960 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 22:22:02,990 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 722 trivial. 0 not checked. [2024-11-18 22:22:02,990 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 22:22:02,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1282637033] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:22:02,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 22:22:02,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-18 22:22:02,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304955871] [2024-11-18 22:22:02,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:22:03,000 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 22:22:03,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:22:03,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 22:22:03,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 22:22:03,035 INFO L87 Difference]: Start difference. First operand has 94 states, 71 states have (on average 1.5070422535211268) internal successors, (107), 72 states have internal predecessors, (107), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-18 22:22:03,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:22:03,079 INFO L93 Difference]: Finished difference Result 185 states and 311 transitions. [2024-11-18 22:22:03,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 22:22:03,082 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) Word has length 137 [2024-11-18 22:22:03,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:22:03,093 INFO L225 Difference]: With dead ends: 185 [2024-11-18 22:22:03,094 INFO L226 Difference]: Without dead ends: 90 [2024-11-18 22:22:03,101 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 22:22:03,107 INFO L432 NwaCegarLoop]: 144 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, 144 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 [2024-11-18 22:22:03,108 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 22:22:03,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2024-11-18 22:22:03,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2024-11-18 22:22:03,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 68 states have (on average 1.4705882352941178) internal successors, (100), 68 states have internal predecessors, (100), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-18 22:22:03,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 140 transitions. [2024-11-18 22:22:03,169 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 140 transitions. Word has length 137 [2024-11-18 22:22:03,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:22:03,169 INFO L471 AbstractCegarLoop]: Abstraction has 90 states and 140 transitions. [2024-11-18 22:22:03,170 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-18 22:22:03,170 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 140 transitions. [2024-11-18 22:22:03,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2024-11-18 22:22:03,175 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:22:03,175 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 22:22:03,190 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-18 22:22:03,377 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 [2024-11-18 22:22:03,377 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:22:03,378 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:22:03,378 INFO L85 PathProgramCache]: Analyzing trace with hash 940810492, now seen corresponding path program 1 times [2024-11-18 22:22:03,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:22:03,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879600520] [2024-11-18 22:22:03,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:22:03,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:22:03,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:22:03,722 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-18 22:22:03,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:22:03,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879600520] [2024-11-18 22:22:03,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879600520] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:22:03,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:22:03,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 22:22:03,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157261419] [2024-11-18 22:22:03,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:22:03,727 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 22:22:03,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:22:03,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 22:22:03,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 22:22:03,731 INFO L87 Difference]: Start difference. First operand 90 states and 140 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 22:22:03,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:22:03,846 INFO L93 Difference]: Finished difference Result 261 states and 408 transitions. [2024-11-18 22:22:03,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 22:22:03,847 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 137 [2024-11-18 22:22:03,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:22:03,854 INFO L225 Difference]: With dead ends: 261 [2024-11-18 22:22:03,856 INFO L226 Difference]: Without dead ends: 174 [2024-11-18 22:22:03,858 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 [2024-11-18 22:22:03,859 INFO L432 NwaCegarLoop]: 181 mSDtfsCounter, 125 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 22:22:03,861 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 298 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 22:22:03,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2024-11-18 22:22:03,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 172. [2024-11-18 22:22:03,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 129 states have (on average 1.434108527131783) internal successors, (185), 129 states have internal predecessors, (185), 40 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-11-18 22:22:03,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 265 transitions. [2024-11-18 22:22:03,898 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 265 transitions. Word has length 137 [2024-11-18 22:22:03,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:22:03,900 INFO L471 AbstractCegarLoop]: Abstraction has 172 states and 265 transitions. [2024-11-18 22:22:03,901 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 22:22:03,901 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 265 transitions. [2024-11-18 22:22:03,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2024-11-18 22:22:03,906 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:22:03,906 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 22:22:03,906 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 22:22:03,909 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:22:03,910 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:22:03,910 INFO L85 PathProgramCache]: Analyzing trace with hash -1100509779, now seen corresponding path program 1 times [2024-11-18 22:22:03,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:22:03,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199569360] [2024-11-18 22:22:03,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:22:03,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:22:03,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:22:04,397 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-18 22:22:04,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:22:04,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199569360] [2024-11-18 22:22:04,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199569360] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:22:04,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:22:04,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 22:22:04,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827323612] [2024-11-18 22:22:04,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:22:04,400 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 22:22:04,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:22:04,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 22:22:04,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 22:22:04,401 INFO L87 Difference]: Start difference. First operand 172 states and 265 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 22:22:04,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:22:04,713 INFO L93 Difference]: Finished difference Result 399 states and 608 transitions. [2024-11-18 22:22:04,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 22:22:04,714 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 138 [2024-11-18 22:22:04,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:22:04,716 INFO L225 Difference]: With dead ends: 399 [2024-11-18 22:22:04,717 INFO L226 Difference]: Without dead ends: 230 [2024-11-18 22:22:04,719 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-18 22:22:04,721 INFO L432 NwaCegarLoop]: 222 mSDtfsCounter, 192 mSDsluCounter, 502 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 724 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 22:22:04,723 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 724 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 22:22:04,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2024-11-18 22:22:04,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 225. [2024-11-18 22:22:04,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 176 states have (on average 1.4034090909090908) internal successors, (247), 177 states have internal predecessors, (247), 44 states have call successors, (44), 4 states have call predecessors, (44), 4 states have return successors, (44), 43 states have call predecessors, (44), 44 states have call successors, (44) [2024-11-18 22:22:04,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 335 transitions. [2024-11-18 22:22:04,764 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 335 transitions. Word has length 138 [2024-11-18 22:22:04,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:22:04,765 INFO L471 AbstractCegarLoop]: Abstraction has 225 states and 335 transitions. [2024-11-18 22:22:04,769 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 22:22:04,770 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 335 transitions. [2024-11-18 22:22:04,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-11-18 22:22:04,772 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:22:04,772 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 22:22:04,772 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 22:22:04,773 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:22:04,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:22:04,774 INFO L85 PathProgramCache]: Analyzing trace with hash -1340345743, now seen corresponding path program 1 times [2024-11-18 22:22:04,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:22:04,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266400725] [2024-11-18 22:22:04,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:22:04,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:22:04,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:22:05,187 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-18 22:22:05,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:22:05,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266400725] [2024-11-18 22:22:05,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266400725] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:22:05,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:22:05,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 22:22:05,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975359805] [2024-11-18 22:22:05,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:22:05,189 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 22:22:05,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:22:05,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 22:22:05,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-18 22:22:05,190 INFO L87 Difference]: Start difference. First operand 225 states and 335 transitions. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 22:22:05,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:22:05,619 INFO L93 Difference]: Finished difference Result 455 states and 672 transitions. [2024-11-18 22:22:05,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 22:22:05,620 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 139 [2024-11-18 22:22:05,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:22:05,625 INFO L225 Difference]: With dead ends: 455 [2024-11-18 22:22:05,626 INFO L226 Difference]: Without dead ends: 233 [2024-11-18 22:22:05,627 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-18 22:22:05,630 INFO L432 NwaCegarLoop]: 186 mSDtfsCounter, 167 mSDsluCounter, 408 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 594 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 22:22:05,631 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 594 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 22:22:05,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2024-11-18 22:22:05,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 229. [2024-11-18 22:22:05,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 179 states have (on average 1.3910614525139664) internal successors, (249), 180 states have internal predecessors, (249), 44 states have call successors, (44), 5 states have call predecessors, (44), 5 states have return successors, (44), 43 states have call predecessors, (44), 44 states have call successors, (44) [2024-11-18 22:22:05,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 337 transitions. [2024-11-18 22:22:05,673 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 337 transitions. Word has length 139 [2024-11-18 22:22:05,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:22:05,675 INFO L471 AbstractCegarLoop]: Abstraction has 229 states and 337 transitions. [2024-11-18 22:22:05,676 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 22:22:05,676 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 337 transitions. [2024-11-18 22:22:05,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-18 22:22:05,679 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:22:05,680 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 22:22:05,680 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 22:22:05,681 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:22:05,682 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:22:05,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1458310040, now seen corresponding path program 1 times [2024-11-18 22:22:05,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:22:05,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022893605] [2024-11-18 22:22:05,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:22:05,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:22:05,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:22:06,418 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 33 proven. 24 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2024-11-18 22:22:06,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:22:06,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022893605] [2024-11-18 22:22:06,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022893605] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 22:22:06,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1252332602] [2024-11-18 22:22:06,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:22:06,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 22:22:06,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 22:22:06,422 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) [2024-11-18 22:22:06,424 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 22:22:06,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:22:06,584 INFO L255 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-18 22:22:06,588 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 22:22:06,811 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 393 proven. 24 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2024-11-18 22:22:06,811 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 22:22:07,098 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 33 proven. 24 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2024-11-18 22:22:07,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1252332602] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 22:22:07,099 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 22:22:07,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2024-11-18 22:22:07,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210645288] [2024-11-18 22:22:07,100 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 22:22:07,100 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-18 22:22:07,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:22:07,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-18 22:22:07,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-18 22:22:07,102 INFO L87 Difference]: Start difference. First operand 229 states and 337 transitions. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 2 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2024-11-18 22:22:07,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:22:07,380 INFO L93 Difference]: Finished difference Result 375 states and 548 transitions. [2024-11-18 22:22:07,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 22:22:07,383 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 2 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 140 [2024-11-18 22:22:07,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:22:07,385 INFO L225 Difference]: With dead ends: 375 [2024-11-18 22:22:07,385 INFO L226 Difference]: Without dead ends: 149 [2024-11-18 22:22:07,386 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 277 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2024-11-18 22:22:07,388 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 165 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 22:22:07,389 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 247 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 22:22:07,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2024-11-18 22:22:07,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 129. [2024-11-18 22:22:07,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 100 states have (on average 1.31) internal successors, (131), 101 states have internal predecessors, (131), 24 states have call successors, (24), 4 states have call predecessors, (24), 4 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-18 22:22:07,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 179 transitions. [2024-11-18 22:22:07,409 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 179 transitions. Word has length 140 [2024-11-18 22:22:07,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:22:07,409 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 179 transitions. [2024-11-18 22:22:07,410 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 2 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2024-11-18 22:22:07,410 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 179 transitions. [2024-11-18 22:22:07,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-18 22:22:07,412 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:22:07,412 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 22:22:07,434 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-18 22:22:07,613 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 22:22:07,613 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:22:07,614 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:22:07,614 INFO L85 PathProgramCache]: Analyzing trace with hash 998679790, now seen corresponding path program 1 times [2024-11-18 22:22:07,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:22:07,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633654307] [2024-11-18 22:22:07,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:22:07,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:22:08,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-18 22:22:08,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1214470495] [2024-11-18 22:22:08,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:22:08,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 22:22:08,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 22:22:08,158 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) [2024-11-18 22:22:08,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 22:22:08,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:22:08,486 INFO L255 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-18 22:22:08,497 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 22:22:09,983 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 407 proven. 78 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2024-11-18 22:22:09,983 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 22:22:12,443 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 30 proven. 81 refuted. 0 times theorem prover too weak. 649 trivial. 0 not checked. [2024-11-18 22:22:12,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:22:12,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633654307] [2024-11-18 22:22:12,444 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-18 22:22:12,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1214470495] [2024-11-18 22:22:12,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1214470495] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 22:22:12,445 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-18 22:22:12,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16] total 30 [2024-11-18 22:22:12,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48116750] [2024-11-18 22:22:12,445 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-18 22:22:12,446 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-18 22:22:12,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:22:12,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-18 22:22:12,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=679, Unknown=0, NotChecked=0, Total=870 [2024-11-18 22:22:12,448 INFO L87 Difference]: Start difference. First operand 129 states and 179 transitions. Second operand has 30 states, 29 states have (on average 3.413793103448276) internal successors, (99), 29 states have internal predecessors, (99), 10 states have call successors, (40), 6 states have call predecessors, (40), 10 states have return successors, (40), 10 states have call predecessors, (40), 10 states have call successors, (40) [2024-11-18 22:22:19,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:22:19,309 INFO L93 Difference]: Finished difference Result 714 states and 965 transitions. [2024-11-18 22:22:19,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2024-11-18 22:22:19,309 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 3.413793103448276) internal successors, (99), 29 states have internal predecessors, (99), 10 states have call successors, (40), 6 states have call predecessors, (40), 10 states have return successors, (40), 10 states have call predecessors, (40), 10 states have call successors, (40) Word has length 141 [2024-11-18 22:22:19,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:22:19,313 INFO L225 Difference]: With dead ends: 714 [2024-11-18 22:22:19,315 INFO L226 Difference]: Without dead ends: 588 [2024-11-18 22:22:19,318 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2351 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=1698, Invalid=5108, Unknown=0, NotChecked=0, Total=6806 [2024-11-18 22:22:19,319 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 2229 mSDsluCounter, 846 mSDsCounter, 0 mSdLazyCounter, 1817 mSolverCounterSat, 481 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2232 SdHoareTripleChecker+Valid, 923 SdHoareTripleChecker+Invalid, 2298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 481 IncrementalHoareTripleChecker+Valid, 1817 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-18 22:22:19,322 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2232 Valid, 923 Invalid, 2298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [481 Valid, 1817 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-18 22:22:19,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2024-11-18 22:22:19,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 399. [2024-11-18 22:22:19,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 314 states have (on average 1.2961783439490446) internal successors, (407), 316 states have internal predecessors, (407), 66 states have call successors, (66), 18 states have call predecessors, (66), 18 states have return successors, (66), 64 states have call predecessors, (66), 66 states have call successors, (66) [2024-11-18 22:22:19,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 539 transitions. [2024-11-18 22:22:19,421 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 539 transitions. Word has length 141 [2024-11-18 22:22:19,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:22:19,422 INFO L471 AbstractCegarLoop]: Abstraction has 399 states and 539 transitions. [2024-11-18 22:22:19,422 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 3.413793103448276) internal successors, (99), 29 states have internal predecessors, (99), 10 states have call successors, (40), 6 states have call predecessors, (40), 10 states have return successors, (40), 10 states have call predecessors, (40), 10 states have call successors, (40) [2024-11-18 22:22:19,423 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 539 transitions. [2024-11-18 22:22:19,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-18 22:22:19,424 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:22:19,424 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 22:22:19,443 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-18 22:22:19,625 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 22:22:19,626 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:22:19,626 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:22:19,627 INFO L85 PathProgramCache]: Analyzing trace with hash -12437460, now seen corresponding path program 1 times [2024-11-18 22:22:19,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:22:19,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745281215] [2024-11-18 22:22:19,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:22:19,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:22:19,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-18 22:22:19,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [390099556] [2024-11-18 22:22:19,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:22:19,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 22:22:19,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 22:22:19,886 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) [2024-11-18 22:22:19,887 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-18 22:22:20,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:22:20,045 INFO L255 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-18 22:22:20,051 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 22:22:21,257 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 500 proven. 87 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2024-11-18 22:22:21,257 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 22:22:29,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:22:29,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745281215] [2024-11-18 22:22:29,111 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-18 22:22:29,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [390099556] [2024-11-18 22:22:29,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [390099556] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 22:22:29,111 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-18 22:22:29,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2024-11-18 22:22:29,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60300738] [2024-11-18 22:22:29,112 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-18 22:22:29,112 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-18 22:22:29,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:22:29,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-18 22:22:29,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=340, Unknown=1, NotChecked=0, Total=420 [2024-11-18 22:22:29,114 INFO L87 Difference]: Start difference. First operand 399 states and 539 transitions. Second operand has 16 states, 16 states have (on average 3.875) internal successors, (62), 15 states have internal predecessors, (62), 4 states have call successors, (20), 4 states have call predecessors, (20), 7 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2024-11-18 22:22:31,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:22:31,172 INFO L93 Difference]: Finished difference Result 687 states and 920 transitions. [2024-11-18 22:22:31,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-18 22:22:31,173 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.875) internal successors, (62), 15 states have internal predecessors, (62), 4 states have call successors, (20), 4 states have call predecessors, (20), 7 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) Word has length 141 [2024-11-18 22:22:31,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:22:31,178 INFO L225 Difference]: With dead ends: 687 [2024-11-18 22:22:31,181 INFO L226 Difference]: Without dead ends: 434 [2024-11-18 22:22:31,184 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=303, Invalid=1102, Unknown=1, NotChecked=0, Total=1406 [2024-11-18 22:22:31,185 INFO L432 NwaCegarLoop]: 92 mSDtfsCounter, 173 mSDsluCounter, 756 mSDsCounter, 0 mSdLazyCounter, 981 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 848 SdHoareTripleChecker+Invalid, 1034 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 981 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-18 22:22:31,185 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 848 Invalid, 1034 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 981 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-18 22:22:31,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2024-11-18 22:22:31,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 407. [2024-11-18 22:22:31,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 320 states have (on average 1.2875) internal successors, (412), 322 states have internal predecessors, (412), 66 states have call successors, (66), 20 states have call predecessors, (66), 20 states have return successors, (66), 64 states have call predecessors, (66), 66 states have call successors, (66) [2024-11-18 22:22:31,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 544 transitions. [2024-11-18 22:22:31,276 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 544 transitions. Word has length 141 [2024-11-18 22:22:31,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:22:31,277 INFO L471 AbstractCegarLoop]: Abstraction has 407 states and 544 transitions. [2024-11-18 22:22:31,277 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.875) internal successors, (62), 15 states have internal predecessors, (62), 4 states have call successors, (20), 4 states have call predecessors, (20), 7 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2024-11-18 22:22:31,277 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 544 transitions. [2024-11-18 22:22:31,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-18 22:22:31,279 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:22:31,279 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 22:22:31,299 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-18 22:22:31,483 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 22:22:31,484 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:22:31,484 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:22:31,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1139228400, now seen corresponding path program 1 times [2024-11-18 22:22:31,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:22:31,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231539168] [2024-11-18 22:22:31,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:22:31,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:22:31,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-18 22:22:31,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [353808706] [2024-11-18 22:22:31,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:22:31,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 22:22:31,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 22:22:31,698 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) [2024-11-18 22:22:31,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-18 22:22:31,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:22:31,917 INFO L255 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-18 22:22:31,921 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 22:22:34,351 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 406 proven. 114 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2024-11-18 22:22:34,352 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 22:23:17,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:23:17,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231539168] [2024-11-18 22:23:17,359 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-18 22:23:17,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [353808706] [2024-11-18 22:23:17,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [353808706] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 22:23:17,359 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-18 22:23:17,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2024-11-18 22:23:17,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020885041] [2024-11-18 22:23:17,359 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-18 22:23:17,360 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-18 22:23:17,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:23:17,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-18 22:23:17,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=672, Unknown=0, NotChecked=0, Total=812 [2024-11-18 22:23:17,362 INFO L87 Difference]: Start difference. First operand 407 states and 544 transitions. Second operand has 22 states, 22 states have (on average 2.9545454545454546) internal successors, (65), 20 states have internal predecessors, (65), 6 states have call successors, (20), 6 states have call predecessors, (20), 8 states have return successors, (20), 5 states have call predecessors, (20), 6 states have call successors, (20) [2024-11-18 22:23:19,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:23:19,196 INFO L93 Difference]: Finished difference Result 707 states and 937 transitions. [2024-11-18 22:23:19,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-18 22:23:19,198 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.9545454545454546) internal successors, (65), 20 states have internal predecessors, (65), 6 states have call successors, (20), 6 states have call predecessors, (20), 8 states have return successors, (20), 5 states have call predecessors, (20), 6 states have call successors, (20) Word has length 141 [2024-11-18 22:23:19,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:23:19,201 INFO L225 Difference]: With dead ends: 707 [2024-11-18 22:23:19,201 INFO L226 Difference]: Without dead ends: 505 [2024-11-18 22:23:19,202 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 493 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=437, Invalid=1915, Unknown=0, NotChecked=0, Total=2352 [2024-11-18 22:23:19,203 INFO L432 NwaCegarLoop]: 80 mSDtfsCounter, 804 mSDsluCounter, 555 mSDsCounter, 0 mSdLazyCounter, 926 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 804 SdHoareTripleChecker+Valid, 635 SdHoareTripleChecker+Invalid, 1027 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 926 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-18 22:23:19,203 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [804 Valid, 635 Invalid, 1027 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 926 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-18 22:23:19,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2024-11-18 22:23:19,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 419. [2024-11-18 22:23:19,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 326 states have (on average 1.2668711656441718) internal successors, (413), 329 states have internal predecessors, (413), 70 states have call successors, (70), 22 states have call predecessors, (70), 22 states have return successors, (70), 67 states have call predecessors, (70), 70 states have call successors, (70) [2024-11-18 22:23:19,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 553 transitions. [2024-11-18 22:23:19,289 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 553 transitions. Word has length 141 [2024-11-18 22:23:19,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:23:19,289 INFO L471 AbstractCegarLoop]: Abstraction has 419 states and 553 transitions. [2024-11-18 22:23:19,290 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.9545454545454546) internal successors, (65), 20 states have internal predecessors, (65), 6 states have call successors, (20), 6 states have call predecessors, (20), 8 states have return successors, (20), 5 states have call predecessors, (20), 6 states have call successors, (20) [2024-11-18 22:23:19,290 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 553 transitions. [2024-11-18 22:23:19,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-18 22:23:19,291 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:23:19,291 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 22:23:19,312 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-18 22:23:19,492 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 22:23:19,492 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:23:19,493 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:23:19,493 INFO L85 PathProgramCache]: Analyzing trace with hash 128111150, now seen corresponding path program 1 times [2024-11-18 22:23:19,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:23:19,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741364523] [2024-11-18 22:23:19,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:23:19,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:23:19,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-18 22:23:19,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1183969439] [2024-11-18 22:23:19,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:23:19,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 22:23:19,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 22:23:19,676 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 22:23:19,677 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-18 22:23:19,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:23:19,866 INFO L255 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-18 22:23:19,869 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 22:23:21,103 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 502 proven. 114 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-11-18 22:23:21,103 INFO L311 TraceCheckSpWp]: Computing backward predicates...