./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount100_file-53.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount100_file-53.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 71c7df1fae20fc80c584d7fcd9c77a1cbb9d81b2af2b3bc6d67d6058472b2f60 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 23:29:34,353 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 23:29:34,411 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 23:29:34,415 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 23:29:34,416 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 23:29:34,448 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 23:29:34,448 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 23:29:34,449 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 23:29:34,450 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 23:29:34,450 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 23:29:34,450 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 23:29:34,451 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 23:29:34,451 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 23:29:34,452 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 23:29:34,452 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 23:29:34,452 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 23:29:34,453 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 23:29:34,453 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 23:29:34,453 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 23:29:34,454 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 23:29:34,454 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 23:29:34,455 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 23:29:34,455 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 23:29:34,455 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 23:29:34,456 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 23:29:34,456 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 23:29:34,456 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 23:29:34,457 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 23:29:34,457 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 23:29:34,457 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 23:29:34,458 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 23:29:34,458 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 23:29:34,458 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 23:29:34,459 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 23:29:34,459 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 23:29:34,459 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 23:29:34,460 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 23:29:34,460 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 23:29:34,460 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 23:29:34,460 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 23:29:34,461 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 23:29:34,464 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 23:29:34,465 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 71c7df1fae20fc80c584d7fcd9c77a1cbb9d81b2af2b3bc6d67d6058472b2f60 [2024-11-18 23:29:34,771 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 23:29:34,801 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 23:29:34,804 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 23:29:34,806 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 23:29:34,807 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 23:29:34,808 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount100_file-53.i [2024-11-18 23:29:36,426 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 23:29:36,664 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 23:29:36,665 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount100_file-53.i [2024-11-18 23:29:36,677 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9aec1440/a24d63cb7c304b17b4896f7775893496/FLAG8f2990c55 [2024-11-18 23:29:36,692 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9aec1440/a24d63cb7c304b17b4896f7775893496 [2024-11-18 23:29:36,696 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 23:29:36,697 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 23:29:36,699 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 23:29:36,699 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 23:29:36,705 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 23:29:36,707 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:29:36" (1/1) ... [2024-11-18 23:29:36,708 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a15b194 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:29:36, skipping insertion in model container [2024-11-18 23:29:36,709 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:29:36" (1/1) ... [2024-11-18 23:29:36,750 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 23:29:36,980 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount100_file-53.i[916,929] [2024-11-18 23:29:37,079 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 23:29:37,092 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 23:29:37,109 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount100_file-53.i[916,929] [2024-11-18 23:29:37,186 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 23:29:37,219 INFO L204 MainTranslator]: Completed translation [2024-11-18 23:29:37,220 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:29:37 WrapperNode [2024-11-18 23:29:37,220 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 23:29:37,221 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 23:29:37,221 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 23:29:37,221 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 23:29:37,230 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:29:37" (1/1) ... [2024-11-18 23:29:37,245 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:29:37" (1/1) ... [2024-11-18 23:29:37,305 INFO L138 Inliner]: procedures = 26, calls = 38, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 220 [2024-11-18 23:29:37,305 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 23:29:37,307 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 23:29:37,307 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 23:29:37,307 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 23:29:37,321 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:29:37" (1/1) ... [2024-11-18 23:29:37,322 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:29:37" (1/1) ... [2024-11-18 23:29:37,329 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:29:37" (1/1) ... [2024-11-18 23:29:37,363 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 23:29:37,364 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:29:37" (1/1) ... [2024-11-18 23:29:37,364 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:29:37" (1/1) ... [2024-11-18 23:29:37,382 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:29:37" (1/1) ... [2024-11-18 23:29:37,389 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:29:37" (1/1) ... [2024-11-18 23:29:37,397 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:29:37" (1/1) ... [2024-11-18 23:29:37,402 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:29:37" (1/1) ... [2024-11-18 23:29:37,417 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 23:29:37,419 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 23:29:37,420 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 23:29:37,420 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 23:29:37,421 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:29:37" (1/1) ... [2024-11-18 23:29:37,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 23:29:37,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:29:37,460 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 23:29:37,468 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 23:29:37,520 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 23:29:37,521 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-18 23:29:37,521 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-18 23:29:37,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 23:29:37,521 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 23:29:37,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 23:29:37,625 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 23:29:37,628 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 23:29:38,185 INFO L? ?]: Removed 28 outVars from TransFormulas that were not future-live. [2024-11-18 23:29:38,185 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 23:29:38,200 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 23:29:38,200 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 23:29:38,201 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:29:38 BoogieIcfgContainer [2024-11-18 23:29:38,201 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 23:29:38,203 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 23:29:38,203 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 23:29:38,207 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 23:29:38,207 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 11:29:36" (1/3) ... [2024-11-18 23:29:38,208 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d835b7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 11:29:38, skipping insertion in model container [2024-11-18 23:29:38,208 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:29:37" (2/3) ... [2024-11-18 23:29:38,208 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d835b7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 11:29:38, skipping insertion in model container [2024-11-18 23:29:38,208 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:29:38" (3/3) ... [2024-11-18 23:29:38,210 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount100_file-53.i [2024-11-18 23:29:38,228 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 23:29:38,228 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 23:29:38,297 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 23:29:38,303 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;@2a237028, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 23:29:38,304 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 23:29:38,307 INFO L276 IsEmpty]: Start isEmpty. Operand has 95 states, 67 states have (on average 1.462686567164179) internal successors, (98), 68 states have internal predecessors, (98), 25 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-11-18 23:29:38,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-11-18 23:29:38,318 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:29:38,319 INFO L215 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:29:38,320 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:29:38,324 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:29:38,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1745341348, now seen corresponding path program 1 times [2024-11-18 23:29:38,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:29:38,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496082570] [2024-11-18 23:29:38,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:29:38,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:29:38,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:29:38,718 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 1152 trivial. 0 not checked. [2024-11-18 23:29:38,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:29:38,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496082570] [2024-11-18 23:29:38,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496082570] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:29:38,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1107490662] [2024-11-18 23:29:38,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:29:38,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:29:38,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:29:38,726 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 23:29:38,729 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 23:29:38,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:29:38,931 INFO L255 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-18 23:29:38,941 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:29:38,994 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 1152 trivial. 0 not checked. [2024-11-18 23:29:38,994 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 23:29:38,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1107490662] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:29:38,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 23:29:38,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-18 23:29:38,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36925411] [2024-11-18 23:29:38,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:29:39,004 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 23:29:39,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:29:39,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 23:29:39,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 23:29:39,024 INFO L87 Difference]: Start difference. First operand has 95 states, 67 states have (on average 1.462686567164179) internal successors, (98), 68 states have internal predecessors, (98), 25 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) Second operand has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 2 states have call successors, (25) [2024-11-18 23:29:39,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:29:39,059 INFO L93 Difference]: Finished difference Result 183 states and 315 transitions. [2024-11-18 23:29:39,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 23:29:39,062 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 2 states have call successors, (25) Word has length 169 [2024-11-18 23:29:39,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:29:39,072 INFO L225 Difference]: With dead ends: 183 [2024-11-18 23:29:39,072 INFO L226 Difference]: Without dead ends: 91 [2024-11-18 23:29:39,077 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 170 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 23:29:39,080 INFO L432 NwaCegarLoop]: 141 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, 141 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 23:29:39,083 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 23:29:39,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2024-11-18 23:29:39,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2024-11-18 23:29:39,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 64 states have (on average 1.421875) internal successors, (91), 64 states have internal predecessors, (91), 25 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-11-18 23:29:39,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 141 transitions. [2024-11-18 23:29:39,129 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 141 transitions. Word has length 169 [2024-11-18 23:29:39,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:29:39,129 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 141 transitions. [2024-11-18 23:29:39,130 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 2 states have call successors, (25) [2024-11-18 23:29:39,130 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 141 transitions. [2024-11-18 23:29:39,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-11-18 23:29:39,133 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:29:39,133 INFO L215 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:29:39,147 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-18 23:29:39,334 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 23:29:39,334 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:29:39,335 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:29:39,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1889066390, now seen corresponding path program 1 times [2024-11-18 23:29:39,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:29:39,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540523483] [2024-11-18 23:29:39,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:29:39,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:29:39,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:29:40,249 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-11-18 23:29:40,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:29:40,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540523483] [2024-11-18 23:29:40,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540523483] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:29:40,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:29:40,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 23:29:40,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323295104] [2024-11-18 23:29:40,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:29:40,254 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 23:29:40,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:29:40,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 23:29:40,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 23:29:40,258 INFO L87 Difference]: Start difference. First operand 91 states and 141 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2024-11-18 23:29:40,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:29:40,358 INFO L93 Difference]: Finished difference Result 227 states and 350 transitions. [2024-11-18 23:29:40,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 23:29:40,359 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) Word has length 169 [2024-11-18 23:29:40,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:29:40,362 INFO L225 Difference]: With dead ends: 227 [2024-11-18 23:29:40,362 INFO L226 Difference]: Without dead ends: 139 [2024-11-18 23:29:40,363 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 23:29:40,364 INFO L432 NwaCegarLoop]: 137 mSDtfsCounter, 64 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 399 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 23:29:40,365 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 399 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 23:29:40,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2024-11-18 23:29:40,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 135. [2024-11-18 23:29:40,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 101 states have (on average 1.4455445544554455) internal successors, (146), 102 states have internal predecessors, (146), 31 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (31), 30 states have call predecessors, (31), 31 states have call successors, (31) [2024-11-18 23:29:40,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 208 transitions. [2024-11-18 23:29:40,388 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 208 transitions. Word has length 169 [2024-11-18 23:29:40,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:29:40,389 INFO L471 AbstractCegarLoop]: Abstraction has 135 states and 208 transitions. [2024-11-18 23:29:40,389 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2024-11-18 23:29:40,389 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 208 transitions. [2024-11-18 23:29:40,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-11-18 23:29:40,394 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:29:40,394 INFO L215 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:29:40,395 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 23:29:40,395 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:29:40,396 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:29:40,396 INFO L85 PathProgramCache]: Analyzing trace with hash -114059028, now seen corresponding path program 1 times [2024-11-18 23:29:40,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:29:40,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261407820] [2024-11-18 23:29:40,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:29:40,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:29:40,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:29:48,552 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-11-18 23:29:48,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:29:48,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261407820] [2024-11-18 23:29:48,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261407820] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:29:48,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:29:48,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-18 23:29:48,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213340880] [2024-11-18 23:29:48,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:29:48,554 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-18 23:29:48,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:29:48,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-18 23:29:48,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2024-11-18 23:29:48,556 INFO L87 Difference]: Start difference. First operand 135 states and 208 transitions. Second operand has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 states have internal predecessors, (47), 2 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2024-11-18 23:29:53,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:29:53,969 INFO L93 Difference]: Finished difference Result 666 states and 1017 transitions. [2024-11-18 23:29:53,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-18 23:29:53,971 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 states have internal predecessors, (47), 2 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 169 [2024-11-18 23:29:53,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:29:53,980 INFO L225 Difference]: With dead ends: 666 [2024-11-18 23:29:53,983 INFO L226 Difference]: Without dead ends: 534 [2024-11-18 23:29:53,985 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=181, Invalid=689, Unknown=0, NotChecked=0, Total=870 [2024-11-18 23:29:53,989 INFO L432 NwaCegarLoop]: 107 mSDtfsCounter, 1030 mSDsluCounter, 870 mSDsCounter, 0 mSdLazyCounter, 1395 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1030 SdHoareTripleChecker+Valid, 977 SdHoareTripleChecker+Invalid, 1484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-18 23:29:53,989 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1030 Valid, 977 Invalid, 1484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1395 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-18 23:29:53,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2024-11-18 23:29:54,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 233. [2024-11-18 23:29:54,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 172 states have (on average 1.447674418604651) internal successors, (249), 173 states have internal predecessors, (249), 56 states have call successors, (56), 4 states have call predecessors, (56), 4 states have return successors, (56), 55 states have call predecessors, (56), 56 states have call successors, (56) [2024-11-18 23:29:54,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 361 transitions. [2024-11-18 23:29:54,029 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 361 transitions. Word has length 169 [2024-11-18 23:29:54,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:29:54,030 INFO L471 AbstractCegarLoop]: Abstraction has 233 states and 361 transitions. [2024-11-18 23:29:54,031 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 states have internal predecessors, (47), 2 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2024-11-18 23:29:54,031 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 361 transitions. [2024-11-18 23:29:54,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-11-18 23:29:54,037 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:29:54,037 INFO L215 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:29:54,037 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 23:29:54,038 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:29:54,038 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:29:54,038 INFO L85 PathProgramCache]: Analyzing trace with hash -372224466, now seen corresponding path program 1 times [2024-11-18 23:29:54,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:29:54,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576303996] [2024-11-18 23:29:54,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:29:54,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:29:54,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:29:56,118 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-11-18 23:29:56,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:29:56,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576303996] [2024-11-18 23:29:56,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576303996] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:29:56,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:29:56,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 23:29:56,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850106700] [2024-11-18 23:29:56,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:29:56,120 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 23:29:56,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:29:56,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 23:29:56,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 23:29:56,122 INFO L87 Difference]: Start difference. First operand 233 states and 361 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2024-11-18 23:29:56,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:29:56,928 INFO L93 Difference]: Finished difference Result 503 states and 782 transitions. [2024-11-18 23:29:56,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 23:29:56,930 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) Word has length 169 [2024-11-18 23:29:56,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:29:56,933 INFO L225 Difference]: With dead ends: 503 [2024-11-18 23:29:56,934 INFO L226 Difference]: Without dead ends: 371 [2024-11-18 23:29:56,935 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-18 23:29:56,936 INFO L432 NwaCegarLoop]: 105 mSDtfsCounter, 130 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 23:29:56,936 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 406 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 23:29:56,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2024-11-18 23:29:56,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 232. [2024-11-18 23:29:56,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 171 states have (on average 1.4444444444444444) internal successors, (247), 173 states have internal predecessors, (247), 56 states have call successors, (56), 4 states have call predecessors, (56), 4 states have return successors, (56), 54 states have call predecessors, (56), 56 states have call successors, (56) [2024-11-18 23:29:56,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 359 transitions. [2024-11-18 23:29:56,981 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 359 transitions. Word has length 169 [2024-11-18 23:29:56,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:29:56,984 INFO L471 AbstractCegarLoop]: Abstraction has 232 states and 359 transitions. [2024-11-18 23:29:56,984 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2024-11-18 23:29:56,984 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 359 transitions. [2024-11-18 23:29:56,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-11-18 23:29:56,988 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:29:56,989 INFO L215 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:29:56,989 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 23:29:56,991 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:29:56,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:29:56,991 INFO L85 PathProgramCache]: Analyzing trace with hash 1559087423, now seen corresponding path program 1 times [2024-11-18 23:29:56,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:29:56,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831995093] [2024-11-18 23:29:56,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:29:56,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:29:57,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:29:57,723 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-11-18 23:29:57,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:29:57,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831995093] [2024-11-18 23:29:57,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831995093] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:29:57,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:29:57,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-18 23:29:57,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774293792] [2024-11-18 23:29:57,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:29:57,725 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 23:29:57,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:29:57,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 23:29:57,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-18 23:29:57,728 INFO L87 Difference]: Start difference. First operand 232 states and 359 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2024-11-18 23:29:58,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:29:58,302 INFO L93 Difference]: Finished difference Result 721 states and 1124 transitions. [2024-11-18 23:29:58,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-18 23:29:58,303 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) Word has length 170 [2024-11-18 23:29:58,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:29:58,310 INFO L225 Difference]: With dead ends: 721 [2024-11-18 23:29:58,310 INFO L226 Difference]: Without dead ends: 540 [2024-11-18 23:29:58,311 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2024-11-18 23:29:58,314 INFO L432 NwaCegarLoop]: 255 mSDtfsCounter, 309 mSDsluCounter, 865 mSDsCounter, 0 mSdLazyCounter, 438 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 1120 SdHoareTripleChecker+Invalid, 515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 23:29:58,314 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [309 Valid, 1120 Invalid, 515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 438 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 23:29:58,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2024-11-18 23:29:58,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 273. [2024-11-18 23:29:58,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 212 states have (on average 1.4858490566037736) internal successors, (315), 213 states have internal predecessors, (315), 56 states have call successors, (56), 4 states have call predecessors, (56), 4 states have return successors, (56), 55 states have call predecessors, (56), 56 states have call successors, (56) [2024-11-18 23:29:58,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 427 transitions. [2024-11-18 23:29:58,357 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 427 transitions. Word has length 170 [2024-11-18 23:29:58,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:29:58,360 INFO L471 AbstractCegarLoop]: Abstraction has 273 states and 427 transitions. [2024-11-18 23:29:58,360 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2024-11-18 23:29:58,360 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 427 transitions. [2024-11-18 23:29:58,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-11-18 23:29:58,362 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:29:58,362 INFO L215 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:29:58,363 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 23:29:58,363 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:29:58,365 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:29:58,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1300921985, now seen corresponding path program 1 times [2024-11-18 23:29:58,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:29:58,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700172052] [2024-11-18 23:29:58,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:29:58,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:29:58,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:30:00,704 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-11-18 23:30:00,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:30:00,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700172052] [2024-11-18 23:30:00,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700172052] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:30:00,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:30:00,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-18 23:30:00,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089768738] [2024-11-18 23:30:00,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:30:00,707 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 23:30:00,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:30:00,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 23:30:00,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-18 23:30:00,708 INFO L87 Difference]: Start difference. First operand 273 states and 427 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2024-11-18 23:30:01,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:30:01,997 INFO L93 Difference]: Finished difference Result 704 states and 1098 transitions. [2024-11-18 23:30:02,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 23:30:02,003 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) Word has length 170 [2024-11-18 23:30:02,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:30:02,008 INFO L225 Difference]: With dead ends: 704 [2024-11-18 23:30:02,009 INFO L226 Difference]: Without dead ends: 523 [2024-11-18 23:30:02,011 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-11-18 23:30:02,011 INFO L432 NwaCegarLoop]: 128 mSDtfsCounter, 234 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 527 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-18 23:30:02,013 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 527 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-18 23:30:02,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2024-11-18 23:30:02,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 301. [2024-11-18 23:30:02,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 240 states have (on average 1.5125) internal successors, (363), 241 states have internal predecessors, (363), 56 states have call successors, (56), 4 states have call predecessors, (56), 4 states have return successors, (56), 55 states have call predecessors, (56), 56 states have call successors, (56) [2024-11-18 23:30:02,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 475 transitions. [2024-11-18 23:30:02,045 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 475 transitions. Word has length 170 [2024-11-18 23:30:02,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:30:02,046 INFO L471 AbstractCegarLoop]: Abstraction has 301 states and 475 transitions. [2024-11-18 23:30:02,046 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2024-11-18 23:30:02,046 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 475 transitions. [2024-11-18 23:30:02,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-11-18 23:30:02,048 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:30:02,048 INFO L215 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:30:02,049 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 23:30:02,049 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:30:02,049 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:30:02,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1981789249, now seen corresponding path program 1 times [2024-11-18 23:30:02,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:30:02,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546825984] [2024-11-18 23:30:02,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:30:02,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:30:02,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:30:02,194 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-11-18 23:30:02,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:30:02,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546825984] [2024-11-18 23:30:02,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546825984] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:30:02,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:30:02,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 23:30:02,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098998864] [2024-11-18 23:30:02,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:30:02,198 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 23:30:02,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:30:02,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 23:30:02,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 23:30:02,199 INFO L87 Difference]: Start difference. First operand 301 states and 475 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2024-11-18 23:30:02,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:30:02,323 INFO L93 Difference]: Finished difference Result 717 states and 1128 transitions. [2024-11-18 23:30:02,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 23:30:02,324 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) Word has length 170 [2024-11-18 23:30:02,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:30:02,328 INFO L225 Difference]: With dead ends: 717 [2024-11-18 23:30:02,329 INFO L226 Difference]: Without dead ends: 529 [2024-11-18 23:30:02,330 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 23:30:02,331 INFO L432 NwaCegarLoop]: 161 mSDtfsCounter, 129 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 23:30:02,331 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 418 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 23:30:02,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2024-11-18 23:30:02,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 423. [2024-11-18 23:30:02,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 423 states, 351 states have (on average 1.5014245014245013) internal successors, (527), 354 states have internal predecessors, (527), 64 states have call successors, (64), 7 states have call predecessors, (64), 7 states have return successors, (64), 61 states have call predecessors, (64), 64 states have call successors, (64) [2024-11-18 23:30:02,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 655 transitions. [2024-11-18 23:30:02,360 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 655 transitions. Word has length 170 [2024-11-18 23:30:02,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:30:02,361 INFO L471 AbstractCegarLoop]: Abstraction has 423 states and 655 transitions. [2024-11-18 23:30:02,361 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2024-11-18 23:30:02,361 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 655 transitions. [2024-11-18 23:30:02,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-11-18 23:30:02,364 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:30:02,364 INFO L215 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:30:02,365 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 23:30:02,365 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:30:02,366 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:30:02,366 INFO L85 PathProgramCache]: Analyzing trace with hash -250543591, now seen corresponding path program 1 times [2024-11-18 23:30:02,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:30:02,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702958250] [2024-11-18 23:30:02,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:30:02,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:30:02,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:30:08,262 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-11-18 23:30:08,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:30:08,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702958250] [2024-11-18 23:30:08,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702958250] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:30:08,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:30:08,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-18 23:30:08,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587197735] [2024-11-18 23:30:08,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:30:08,264 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-18 23:30:08,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:30:08,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-18 23:30:08,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2024-11-18 23:30:08,266 INFO L87 Difference]: Start difference. First operand 423 states and 655 transitions. Second operand has 16 states, 16 states have (on average 3.0) internal successors, (48), 16 states have internal predecessors, (48), 2 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2024-11-18 23:30:16,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:30:16,243 INFO L93 Difference]: Finished difference Result 1397 states and 2138 transitions. [2024-11-18 23:30:16,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-18 23:30:16,244 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.0) internal successors, (48), 16 states have internal predecessors, (48), 2 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 170 [2024-11-18 23:30:16,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:30:16,249 INFO L225 Difference]: With dead ends: 1397 [2024-11-18 23:30:16,250 INFO L226 Difference]: Without dead ends: 1105 [2024-11-18 23:30:16,251 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=169, Invalid=587, Unknown=0, NotChecked=0, Total=756 [2024-11-18 23:30:16,252 INFO L432 NwaCegarLoop]: 147 mSDtfsCounter, 1027 mSDsluCounter, 692 mSDsCounter, 0 mSdLazyCounter, 1320 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1027 SdHoareTripleChecker+Valid, 839 SdHoareTripleChecker+Invalid, 1445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 1320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-11-18 23:30:16,252 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1027 Valid, 839 Invalid, 1445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 1320 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-11-18 23:30:16,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1105 states. [2024-11-18 23:30:16,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1105 to 443. [2024-11-18 23:30:16,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 371 states have (on average 1.5148247978436657) internal successors, (562), 374 states have internal predecessors, (562), 64 states have call successors, (64), 7 states have call predecessors, (64), 7 states have return successors, (64), 61 states have call predecessors, (64), 64 states have call successors, (64) [2024-11-18 23:30:16,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 690 transitions. [2024-11-18 23:30:16,286 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 690 transitions. Word has length 170 [2024-11-18 23:30:16,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:30:16,287 INFO L471 AbstractCegarLoop]: Abstraction has 443 states and 690 transitions. [2024-11-18 23:30:16,287 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.0) internal successors, (48), 16 states have internal predecessors, (48), 2 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2024-11-18 23:30:16,287 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 690 transitions. [2024-11-18 23:30:16,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-11-18 23:30:16,289 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:30:16,289 INFO L215 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:30:16,290 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 23:30:16,290 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:30:16,290 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:30:16,290 INFO L85 PathProgramCache]: Analyzing trace with hash -508709029, now seen corresponding path program 1 times [2024-11-18 23:30:16,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:30:16,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545787416] [2024-11-18 23:30:16,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:30:16,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:30:16,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:30:18,530 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-11-18 23:30:18,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:30:18,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545787416] [2024-11-18 23:30:18,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545787416] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:30:18,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:30:18,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-18 23:30:18,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617045851] [2024-11-18 23:30:18,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:30:18,533 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-18 23:30:18,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:30:18,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-18 23:30:18,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-18 23:30:18,538 INFO L87 Difference]: Start difference. First operand 443 states and 690 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2024-11-18 23:30:20,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:30:20,142 INFO L93 Difference]: Finished difference Result 1233 states and 1907 transitions. [2024-11-18 23:30:20,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-18 23:30:20,143 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) Word has length 170 [2024-11-18 23:30:20,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:30:20,148 INFO L225 Difference]: With dead ends: 1233 [2024-11-18 23:30:20,149 INFO L226 Difference]: Without dead ends: 941 [2024-11-18 23:30:20,150 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2024-11-18 23:30:20,152 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 388 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 639 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 388 SdHoareTripleChecker+Valid, 621 SdHoareTripleChecker+Invalid, 718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 639 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-18 23:30:20,152 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [388 Valid, 621 Invalid, 718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 639 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-18 23:30:20,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 941 states. [2024-11-18 23:30:20,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 941 to 448. [2024-11-18 23:30:20,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 448 states, 376 states have (on average 1.5159574468085106) internal successors, (570), 379 states have internal predecessors, (570), 64 states have call successors, (64), 7 states have call predecessors, (64), 7 states have return successors, (64), 61 states have call predecessors, (64), 64 states have call successors, (64) [2024-11-18 23:30:20,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 698 transitions. [2024-11-18 23:30:20,192 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 698 transitions. Word has length 170 [2024-11-18 23:30:20,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:30:20,192 INFO L471 AbstractCegarLoop]: Abstraction has 448 states and 698 transitions. [2024-11-18 23:30:20,193 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2024-11-18 23:30:20,193 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 698 transitions. [2024-11-18 23:30:20,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-11-18 23:30:20,195 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:30:20,195 INFO L215 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:30:20,195 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-18 23:30:20,195 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:30:20,195 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:30:20,196 INFO L85 PathProgramCache]: Analyzing trace with hash 938577735, now seen corresponding path program 1 times [2024-11-18 23:30:20,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:30:20,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686502188] [2024-11-18 23:30:20,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:30:20,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:30:22,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:30:22,764 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 6 proven. 66 refuted. 0 times theorem prover too weak. 1128 trivial. 0 not checked. [2024-11-18 23:30:22,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:30:22,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686502188] [2024-11-18 23:30:22,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686502188] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:30:22,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1476247838] [2024-11-18 23:30:22,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:30:22,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:30:22,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:30:22,767 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 23:30:22,769 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 23:30:22,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:30:22,912 INFO L255 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-18 23:30:22,918 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:30:23,252 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 620 proven. 78 refuted. 0 times theorem prover too weak. 502 trivial. 0 not checked. [2024-11-18 23:30:23,252 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 23:30:23,551 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 30 proven. 42 refuted. 0 times theorem prover too weak. 1128 trivial. 0 not checked. [2024-11-18 23:30:23,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1476247838] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 23:30:23,552 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 23:30:23,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 6] total 17 [2024-11-18 23:30:23,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993349037] [2024-11-18 23:30:23,552 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 23:30:23,554 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-18 23:30:23,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:30:23,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-18 23:30:23,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2024-11-18 23:30:23,556 INFO L87 Difference]: Start difference. First operand 448 states and 698 transitions. Second operand has 17 states, 17 states have (on average 6.882352941176471) internal successors, (117), 17 states have internal predecessors, (117), 5 states have call successors, (64), 3 states have call predecessors, (64), 5 states have return successors, (65), 5 states have call predecessors, (65), 5 states have call successors, (65) [2024-11-18 23:30:25,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:30:25,840 INFO L93 Difference]: Finished difference Result 2082 states and 3137 transitions. [2024-11-18 23:30:25,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2024-11-18 23:30:25,841 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 6.882352941176471) internal successors, (117), 17 states have internal predecessors, (117), 5 states have call successors, (64), 3 states have call predecessors, (64), 5 states have return successors, (65), 5 states have call predecessors, (65), 5 states have call successors, (65) Word has length 171 [2024-11-18 23:30:25,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:30:25,849 INFO L225 Difference]: With dead ends: 2082 [2024-11-18 23:30:25,849 INFO L226 Difference]: Without dead ends: 1752 [2024-11-18 23:30:25,852 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 339 SyntacticMatches, 2 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1145 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=683, Invalid=3223, Unknown=0, NotChecked=0, Total=3906 [2024-11-18 23:30:25,853 INFO L432 NwaCegarLoop]: 142 mSDtfsCounter, 2055 mSDsluCounter, 937 mSDsCounter, 0 mSdLazyCounter, 1264 mSolverCounterSat, 464 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2067 SdHoareTripleChecker+Valid, 1079 SdHoareTripleChecker+Invalid, 1728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 464 IncrementalHoareTripleChecker+Valid, 1264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-18 23:30:25,854 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2067 Valid, 1079 Invalid, 1728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [464 Valid, 1264 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-18 23:30:25,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1752 states. [2024-11-18 23:30:25,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1752 to 568. [2024-11-18 23:30:25,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 491 states have (on average 1.4521384928716905) internal successors, (713), 494 states have internal predecessors, (713), 64 states have call successors, (64), 12 states have call predecessors, (64), 12 states have return successors, (64), 61 states have call predecessors, (64), 64 states have call successors, (64) [2024-11-18 23:30:25,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 841 transitions. [2024-11-18 23:30:25,905 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 841 transitions. Word has length 171 [2024-11-18 23:30:25,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:30:25,906 INFO L471 AbstractCegarLoop]: Abstraction has 568 states and 841 transitions. [2024-11-18 23:30:25,906 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.882352941176471) internal successors, (117), 17 states have internal predecessors, (117), 5 states have call successors, (64), 3 states have call predecessors, (64), 5 states have return successors, (65), 5 states have call predecessors, (65), 5 states have call successors, (65) [2024-11-18 23:30:25,906 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 841 transitions. [2024-11-18 23:30:25,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-11-18 23:30:25,908 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:30:25,908 INFO L215 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:30:25,929 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-18 23:30:26,112 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-18 23:30:26,113 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:30:26,113 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:30:26,113 INFO L85 PathProgramCache]: Analyzing trace with hash 775362733, now seen corresponding path program 1 times [2024-11-18 23:30:26,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:30:26,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658388569] [2024-11-18 23:30:26,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:30:26,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:30:26,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:30:26,312 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-11-18 23:30:26,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:30:26,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658388569] [2024-11-18 23:30:26,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658388569] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:30:26,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:30:26,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 23:30:26,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321868286] [2024-11-18 23:30:26,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:30:26,313 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 23:30:26,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:30:26,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 23:30:26,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 23:30:26,314 INFO L87 Difference]: Start difference. First operand 568 states and 841 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2024-11-18 23:30:26,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:30:26,464 INFO L93 Difference]: Finished difference Result 1004 states and 1493 transitions. [2024-11-18 23:30:26,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 23:30:26,464 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) Word has length 171 [2024-11-18 23:30:26,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:30:26,467 INFO L225 Difference]: With dead ends: 1004 [2024-11-18 23:30:26,468 INFO L226 Difference]: Without dead ends: 582 [2024-11-18 23:30:26,469 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 23:30:26,469 INFO L432 NwaCegarLoop]: 154 mSDtfsCounter, 59 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 23:30:26,469 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 364 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 23:30:26,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2024-11-18 23:30:26,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 576. [2024-11-18 23:30:26,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 499 states have (on average 1.4448897795591182) internal successors, (721), 502 states have internal predecessors, (721), 64 states have call successors, (64), 12 states have call predecessors, (64), 12 states have return successors, (64), 61 states have call predecessors, (64), 64 states have call successors, (64) [2024-11-18 23:30:26,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 849 transitions. [2024-11-18 23:30:26,507 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 849 transitions. Word has length 171 [2024-11-18 23:30:26,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:30:26,507 INFO L471 AbstractCegarLoop]: Abstraction has 576 states and 849 transitions. [2024-11-18 23:30:26,507 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2024-11-18 23:30:26,508 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 849 transitions. [2024-11-18 23:30:26,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-11-18 23:30:26,510 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:30:26,511 INFO L215 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:30:26,512 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-18 23:30:26,512 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:30:26,512 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:30:26,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1364867828, now seen corresponding path program 1 times [2024-11-18 23:30:26,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:30:26,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111763759] [2024-11-18 23:30:26,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:30:26,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:30:26,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:30:28,197 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-11-18 23:30:28,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:30:28,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111763759] [2024-11-18 23:30:28,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111763759] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:30:28,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:30:28,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-18 23:30:28,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867213588] [2024-11-18 23:30:28,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:30:28,198 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-18 23:30:28,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:30:28,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-18 23:30:28,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-18 23:30:28,200 INFO L87 Difference]: Start difference. First operand 576 states and 849 transitions. Second operand has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2024-11-18 23:30:29,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:30:29,272 INFO L93 Difference]: Finished difference Result 1538 states and 2266 transitions. [2024-11-18 23:30:29,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 23:30:29,273 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) Word has length 171 [2024-11-18 23:30:29,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:30:29,277 INFO L225 Difference]: With dead ends: 1538 [2024-11-18 23:30:29,277 INFO L226 Difference]: Without dead ends: 1116 [2024-11-18 23:30:29,278 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-18 23:30:29,279 INFO L432 NwaCegarLoop]: 100 mSDtfsCounter, 251 mSDsluCounter, 576 mSDsCounter, 0 mSdLazyCounter, 501 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 676 SdHoareTripleChecker+Invalid, 503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-18 23:30:29,279 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 676 Invalid, 503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 501 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-18 23:30:29,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1116 states. [2024-11-18 23:30:29,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1116 to 576. [2024-11-18 23:30:29,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 499 states have (on average 1.4448897795591182) internal successors, (721), 502 states have internal predecessors, (721), 64 states have call successors, (64), 12 states have call predecessors, (64), 12 states have return successors, (64), 61 states have call predecessors, (64), 64 states have call successors, (64) [2024-11-18 23:30:29,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 849 transitions. [2024-11-18 23:30:29,317 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 849 transitions. Word has length 171 [2024-11-18 23:30:29,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:30:29,318 INFO L471 AbstractCegarLoop]: Abstraction has 576 states and 849 transitions. [2024-11-18 23:30:29,318 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2024-11-18 23:30:29,318 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 849 transitions. [2024-11-18 23:30:29,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2024-11-18 23:30:29,320 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:30:29,321 INFO L215 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:30:29,321 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-18 23:30:29,321 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:30:29,322 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:30:29,322 INFO L85 PathProgramCache]: Analyzing trace with hash -769301604, now seen corresponding path program 1 times [2024-11-18 23:30:29,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:30:29,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122685938] [2024-11-18 23:30:29,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:30:29,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:30:29,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-18 23:30:29,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1905959114] [2024-11-18 23:30:29,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:30:29,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:30:29,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:30:29,471 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 23:30:29,472 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 23:30:29,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:30:29,651 INFO L255 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-11-18 23:30:29,661 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:30:32,440 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 604 proven. 210 refuted. 0 times theorem prover too weak. 386 trivial. 0 not checked. [2024-11-18 23:30:32,441 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 23:30:38,406 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 96 proven. 174 refuted. 0 times theorem prover too weak. 930 trivial. 0 not checked. [2024-11-18 23:30:38,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:30:38,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122685938] [2024-11-18 23:30:38,408 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-18 23:30:38,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1905959114] [2024-11-18 23:30:38,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1905959114] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 23:30:38,408 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-18 23:30:38,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25] total 50 [2024-11-18 23:30:38,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790935316] [2024-11-18 23:30:38,409 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-18 23:30:38,409 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-11-18 23:30:38,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:30:38,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-11-18 23:30:38,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=485, Invalid=1965, Unknown=0, NotChecked=0, Total=2450 [2024-11-18 23:30:38,412 INFO L87 Difference]: Start difference. First operand 576 states and 849 transitions. Second operand has 50 states, 48 states have (on average 2.6458333333333335) internal successors, (127), 46 states have internal predecessors, (127), 12 states have call successors, (50), 7 states have call predecessors, (50), 13 states have return successors, (50), 10 states have call predecessors, (50), 12 states have call successors, (50)