./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-16.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_amount250_file-16.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 8e52341f27f00c0c2ceedafaab379711ebb86ba8e7b8a717254138078fb8d030 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 23:40:22,179 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 23:40:22,237 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 23:40:22,241 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 23:40:22,242 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 23:40:22,265 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 23:40:22,266 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 23:40:22,267 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 23:40:22,267 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 23:40:22,270 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 23:40:22,270 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 23:40:22,270 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 23:40:22,271 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 23:40:22,271 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 23:40:22,271 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 23:40:22,271 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 23:40:22,271 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 23:40:22,272 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 23:40:22,272 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 23:40:22,272 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 23:40:22,273 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 23:40:22,274 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 23:40:22,274 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 23:40:22,274 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 23:40:22,274 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 23:40:22,274 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 23:40:22,275 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 23:40:22,275 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 23:40:22,275 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 23:40:22,275 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 23:40:22,275 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 23:40:22,275 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 23:40:22,275 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 23:40:22,276 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 23:40:22,276 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 23:40:22,276 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 23:40:22,276 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 23:40:22,276 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 23:40:22,276 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 23:40:22,276 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 23:40:22,277 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 23:40:22,279 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 23:40:22,279 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8e52341f27f00c0c2ceedafaab379711ebb86ba8e7b8a717254138078fb8d030 [2024-11-18 23:40:22,491 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 23:40:22,510 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 23:40:22,513 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 23:40:22,514 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 23:40:22,514 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 23:40:22,515 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-16.i [2024-11-18 23:40:23,749 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 23:40:23,924 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 23:40:23,925 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-16.i [2024-11-18 23:40:23,932 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc2a808a2/35b1a78ac7fa4410a0a0f46aa54e64ab/FLAG832caea8c [2024-11-18 23:40:23,943 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc2a808a2/35b1a78ac7fa4410a0a0f46aa54e64ab [2024-11-18 23:40:23,945 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 23:40:23,946 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 23:40:23,947 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 23:40:23,947 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 23:40:23,951 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 23:40:23,952 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:40:23" (1/1) ... [2024-11-18 23:40:23,954 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a656ebc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:40:23, skipping insertion in model container [2024-11-18 23:40:23,955 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:40:23" (1/1) ... [2024-11-18 23:40:23,992 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 23:40:24,128 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_amount250_file-16.i[916,929] [2024-11-18 23:40:24,234 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 23:40:24,243 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 23:40:24,252 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_amount250_file-16.i[916,929] [2024-11-18 23:40:24,300 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 23:40:24,324 INFO L204 MainTranslator]: Completed translation [2024-11-18 23:40:24,324 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:40:24 WrapperNode [2024-11-18 23:40:24,325 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 23:40:24,325 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 23:40:24,325 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 23:40:24,325 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 23:40:24,330 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:40:24" (1/1) ... [2024-11-18 23:40:24,342 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:40:24" (1/1) ... [2024-11-18 23:40:24,416 INFO L138 Inliner]: procedures = 26, calls = 62, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 428 [2024-11-18 23:40:24,417 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 23:40:24,417 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 23:40:24,417 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 23:40:24,417 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 23:40:24,430 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:40:24" (1/1) ... [2024-11-18 23:40:24,430 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:40:24" (1/1) ... [2024-11-18 23:40:24,445 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:40:24" (1/1) ... [2024-11-18 23:40:24,486 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 23:40:24,486 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:40:24" (1/1) ... [2024-11-18 23:40:24,486 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:40:24" (1/1) ... [2024-11-18 23:40:24,498 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:40:24" (1/1) ... [2024-11-18 23:40:24,501 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:40:24" (1/1) ... [2024-11-18 23:40:24,504 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:40:24" (1/1) ... [2024-11-18 23:40:24,507 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:40:24" (1/1) ... [2024-11-18 23:40:24,513 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 23:40:24,514 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 23:40:24,514 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 23:40:24,514 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 23:40:24,515 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:40:24" (1/1) ... [2024-11-18 23:40:24,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 23:40:24,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:40:24,545 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 23:40:24,547 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 23:40:24,577 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 23:40:24,577 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-18 23:40:24,577 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-18 23:40:24,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 23:40:24,578 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 23:40:24,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 23:40:24,661 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 23:40:24,662 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 23:40:25,251 INFO L? ?]: Removed 38 outVars from TransFormulas that were not future-live. [2024-11-18 23:40:25,251 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 23:40:25,267 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 23:40:25,269 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 23:40:25,269 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:40:25 BoogieIcfgContainer [2024-11-18 23:40:25,269 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 23:40:25,271 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 23:40:25,271 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 23:40:25,274 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 23:40:25,274 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 11:40:23" (1/3) ... [2024-11-18 23:40:25,275 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c8d73d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 11:40:25, skipping insertion in model container [2024-11-18 23:40:25,275 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:40:24" (2/3) ... [2024-11-18 23:40:25,275 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c8d73d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 11:40:25, skipping insertion in model container [2024-11-18 23:40:25,276 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:40:25" (3/3) ... [2024-11-18 23:40:25,277 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-16.i [2024-11-18 23:40:25,289 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 23:40:25,289 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 23:40:25,346 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 23:40:25,352 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;@4fca633a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 23:40:25,352 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 23:40:25,357 INFO L276 IsEmpty]: Start isEmpty. Operand has 169 states, 117 states have (on average 1.4957264957264957) internal successors, (175), 118 states have internal predecessors, (175), 49 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2024-11-18 23:40:25,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2024-11-18 23:40:25,374 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:40:25,375 INFO L215 NwaCegarLoop]: trace histogram [49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:40:25,376 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:40:25,380 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:40:25,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1942093810, now seen corresponding path program 1 times [2024-11-18 23:40:25,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:40:25,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382926813] [2024-11-18 23:40:25,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:40:25,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:40:25,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:40:25,787 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 4608 trivial. 0 not checked. [2024-11-18 23:40:25,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:40:25,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382926813] [2024-11-18 23:40:25,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382926813] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:40:25,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [106015171] [2024-11-18 23:40:25,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:40:25,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:40:25,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:40:25,791 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 23:40:25,792 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 23:40:26,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:40:26,027 INFO L255 TraceCheckSpWp]: Trace formula consists of 793 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-18 23:40:26,042 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:40:26,083 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 4608 trivial. 0 not checked. [2024-11-18 23:40:26,083 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 23:40:26,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [106015171] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:40:26,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 23:40:26,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-18 23:40:26,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251907858] [2024-11-18 23:40:26,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:40:26,091 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 23:40:26,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:40:26,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 23:40:26,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 23:40:26,115 INFO L87 Difference]: Start difference. First operand has 169 states, 117 states have (on average 1.4957264957264957) internal successors, (175), 118 states have internal predecessors, (175), 49 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) Second operand has 2 states, 2 states have (on average 40.5) internal successors, (81), 2 states have internal predecessors, (81), 2 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 2 states have call successors, (49) [2024-11-18 23:40:26,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:40:26,158 INFO L93 Difference]: Finished difference Result 331 states and 589 transitions. [2024-11-18 23:40:26,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 23:40:26,160 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 40.5) internal successors, (81), 2 states have internal predecessors, (81), 2 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 2 states have call successors, (49) Word has length 321 [2024-11-18 23:40:26,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:40:26,167 INFO L225 Difference]: With dead ends: 331 [2024-11-18 23:40:26,168 INFO L226 Difference]: Without dead ends: 165 [2024-11-18 23:40:26,171 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 322 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 23:40:26,173 INFO L432 NwaCegarLoop]: 265 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, 265 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 23:40:26,174 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 23:40:26,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2024-11-18 23:40:26,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2024-11-18 23:40:26,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 114 states have (on average 1.4649122807017543) internal successors, (167), 114 states have internal predecessors, (167), 49 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2024-11-18 23:40:26,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 265 transitions. [2024-11-18 23:40:26,221 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 265 transitions. Word has length 321 [2024-11-18 23:40:26,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:40:26,222 INFO L471 AbstractCegarLoop]: Abstraction has 165 states and 265 transitions. [2024-11-18 23:40:26,222 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 40.5) internal successors, (81), 2 states have internal predecessors, (81), 2 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 2 states have call successors, (49) [2024-11-18 23:40:26,222 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 265 transitions. [2024-11-18 23:40:26,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2024-11-18 23:40:26,230 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:40:26,230 INFO L215 NwaCegarLoop]: trace histogram [49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:40:26,262 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 23:40:26,431 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 23:40:26,431 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:40:26,432 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:40:26,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1526124084, now seen corresponding path program 1 times [2024-11-18 23:40:26,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:40:26,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031350550] [2024-11-18 23:40:26,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:40:26,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:40:26,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:40:26,707 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2024-11-18 23:40:26,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:40:26,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031350550] [2024-11-18 23:40:26,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031350550] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:40:26,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:40:26,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 23:40:26,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273147034] [2024-11-18 23:40:26,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:40:26,712 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 23:40:26,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:40:26,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 23:40:26,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 23:40:26,713 INFO L87 Difference]: Start difference. First operand 165 states and 265 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 1 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) [2024-11-18 23:40:26,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:40:26,802 INFO L93 Difference]: Finished difference Result 476 states and 766 transitions. [2024-11-18 23:40:26,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 23:40:26,803 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 1 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) Word has length 321 [2024-11-18 23:40:26,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:40:26,807 INFO L225 Difference]: With dead ends: 476 [2024-11-18 23:40:26,807 INFO L226 Difference]: Without dead ends: 314 [2024-11-18 23:40:26,808 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 23:40:26,809 INFO L432 NwaCegarLoop]: 457 mSDtfsCounter, 222 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 707 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 23:40:26,809 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 707 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 23:40:26,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2024-11-18 23:40:26,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 189. [2024-11-18 23:40:26,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 138 states have (on average 1.5) internal successors, (207), 138 states have internal predecessors, (207), 49 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2024-11-18 23:40:26,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 305 transitions. [2024-11-18 23:40:26,850 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 305 transitions. Word has length 321 [2024-11-18 23:40:26,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:40:26,851 INFO L471 AbstractCegarLoop]: Abstraction has 189 states and 305 transitions. [2024-11-18 23:40:26,852 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 1 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) [2024-11-18 23:40:26,852 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 305 transitions. [2024-11-18 23:40:26,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2024-11-18 23:40:26,855 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:40:26,855 INFO L215 NwaCegarLoop]: trace histogram [49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:40:26,855 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 23:40:26,856 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:40:26,857 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:40:26,857 INFO L85 PathProgramCache]: Analyzing trace with hash -824524210, now seen corresponding path program 1 times [2024-11-18 23:40:26,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:40:26,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387886763] [2024-11-18 23:40:26,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:40:26,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:40:26,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:40:27,340 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2024-11-18 23:40:27,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:40:27,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387886763] [2024-11-18 23:40:27,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387886763] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:40:27,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:40:27,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 23:40:27,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946492389] [2024-11-18 23:40:27,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:40:27,342 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 23:40:27,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:40:27,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 23:40:27,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 23:40:27,345 INFO L87 Difference]: Start difference. First operand 189 states and 305 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 1 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) [2024-11-18 23:40:27,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:40:27,543 INFO L93 Difference]: Finished difference Result 661 states and 1074 transitions. [2024-11-18 23:40:27,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 23:40:27,545 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 1 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) Word has length 321 [2024-11-18 23:40:27,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:40:27,548 INFO L225 Difference]: With dead ends: 661 [2024-11-18 23:40:27,548 INFO L226 Difference]: Without dead ends: 475 [2024-11-18 23:40:27,549 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 23:40:27,550 INFO L432 NwaCegarLoop]: 375 mSDtfsCounter, 289 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 883 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 23:40:27,550 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [289 Valid, 883 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 23:40:27,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2024-11-18 23:40:27,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 381. [2024-11-18 23:40:27,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 280 states have (on average 1.5071428571428571) internal successors, (422), 280 states have internal predecessors, (422), 98 states have call successors, (98), 2 states have call predecessors, (98), 2 states have return successors, (98), 98 states have call predecessors, (98), 98 states have call successors, (98) [2024-11-18 23:40:27,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 618 transitions. [2024-11-18 23:40:27,592 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 618 transitions. Word has length 321 [2024-11-18 23:40:27,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:40:27,594 INFO L471 AbstractCegarLoop]: Abstraction has 381 states and 618 transitions. [2024-11-18 23:40:27,595 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 1 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) [2024-11-18 23:40:27,595 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 618 transitions. [2024-11-18 23:40:27,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2024-11-18 23:40:27,598 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:40:27,599 INFO L215 NwaCegarLoop]: trace histogram [49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:40:27,599 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 23:40:27,599 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:40:27,599 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:40:27,599 INFO L85 PathProgramCache]: Analyzing trace with hash -1879443097, now seen corresponding path program 1 times [2024-11-18 23:40:27,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:40:27,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871148530] [2024-11-18 23:40:27,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:40:27,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:40:27,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:40:28,118 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2024-11-18 23:40:28,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:40:28,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871148530] [2024-11-18 23:40:28,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871148530] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:40:28,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:40:28,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 23:40:28,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923502755] [2024-11-18 23:40:28,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:40:28,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 23:40:28,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:40:28,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 23:40:28,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 23:40:28,125 INFO L87 Difference]: Start difference. First operand 381 states and 618 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 1 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) [2024-11-18 23:40:28,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:40:28,178 INFO L93 Difference]: Finished difference Result 1137 states and 1848 transitions. [2024-11-18 23:40:28,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 23:40:28,179 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 1 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) Word has length 322 [2024-11-18 23:40:28,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:40:28,186 INFO L225 Difference]: With dead ends: 1137 [2024-11-18 23:40:28,187 INFO L226 Difference]: Without dead ends: 759 [2024-11-18 23:40:28,189 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 23:40:28,190 INFO L432 NwaCegarLoop]: 261 mSDtfsCounter, 158 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 23:40:28,191 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 517 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 23:40:28,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 759 states. [2024-11-18 23:40:28,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 759 to 757. [2024-11-18 23:40:28,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 757 states, 556 states have (on average 1.5035971223021583) internal successors, (836), 556 states have internal predecessors, (836), 196 states have call successors, (196), 4 states have call predecessors, (196), 4 states have return successors, (196), 196 states have call predecessors, (196), 196 states have call successors, (196) [2024-11-18 23:40:28,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 757 states to 757 states and 1228 transitions. [2024-11-18 23:40:28,238 INFO L78 Accepts]: Start accepts. Automaton has 757 states and 1228 transitions. Word has length 322 [2024-11-18 23:40:28,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:40:28,239 INFO L471 AbstractCegarLoop]: Abstraction has 757 states and 1228 transitions. [2024-11-18 23:40:28,239 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 1 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) [2024-11-18 23:40:28,239 INFO L276 IsEmpty]: Start isEmpty. Operand 757 states and 1228 transitions. [2024-11-18 23:40:28,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2024-11-18 23:40:28,243 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:40:28,243 INFO L215 NwaCegarLoop]: trace histogram [49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:40:28,243 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 23:40:28,244 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:40:28,245 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:40:28,245 INFO L85 PathProgramCache]: Analyzing trace with hash -1456741271, now seen corresponding path program 1 times [2024-11-18 23:40:28,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:40:28,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924840324] [2024-11-18 23:40:28,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:40:28,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:40:28,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:40:28,845 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2024-11-18 23:40:28,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:40:28,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924840324] [2024-11-18 23:40:28,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924840324] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:40:28,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:40:28,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 23:40:28,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333587943] [2024-11-18 23:40:28,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:40:28,848 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 23:40:28,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:40:28,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 23:40:28,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 23:40:28,849 INFO L87 Difference]: Start difference. First operand 757 states and 1228 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 1 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) [2024-11-18 23:40:29,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:40:29,139 INFO L93 Difference]: Finished difference Result 2639 states and 4285 transitions. [2024-11-18 23:40:29,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 23:40:29,140 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 1 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) Word has length 322 [2024-11-18 23:40:29,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:40:29,149 INFO L225 Difference]: With dead ends: 2639 [2024-11-18 23:40:29,150 INFO L226 Difference]: Without dead ends: 1885 [2024-11-18 23:40:29,152 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 23:40:29,153 INFO L432 NwaCegarLoop]: 302 mSDtfsCounter, 353 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 806 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 23:40:29,154 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [353 Valid, 806 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 23:40:29,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1885 states. [2024-11-18 23:40:29,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1885 to 1509. [2024-11-18 23:40:29,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1509 states, 1108 states have (on average 1.4945848375451263) internal successors, (1656), 1108 states have internal predecessors, (1656), 392 states have call successors, (392), 8 states have call predecessors, (392), 8 states have return successors, (392), 392 states have call predecessors, (392), 392 states have call successors, (392) [2024-11-18 23:40:29,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1509 states to 1509 states and 2440 transitions. [2024-11-18 23:40:29,316 INFO L78 Accepts]: Start accepts. Automaton has 1509 states and 2440 transitions. Word has length 322 [2024-11-18 23:40:29,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:40:29,316 INFO L471 AbstractCegarLoop]: Abstraction has 1509 states and 2440 transitions. [2024-11-18 23:40:29,316 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 1 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) [2024-11-18 23:40:29,316 INFO L276 IsEmpty]: Start isEmpty. Operand 1509 states and 2440 transitions. [2024-11-18 23:40:29,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2024-11-18 23:40:29,321 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:40:29,322 INFO L215 NwaCegarLoop]: trace histogram [49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:40:29,322 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 23:40:29,322 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:40:29,322 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:40:29,322 INFO L85 PathProgramCache]: Analyzing trace with hash 617983630, now seen corresponding path program 1 times [2024-11-18 23:40:29,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:40:29,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658087558] [2024-11-18 23:40:29,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:40:29,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:40:29,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:40:30,209 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2024-11-18 23:40:30,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:40:30,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658087558] [2024-11-18 23:40:30,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658087558] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:40:30,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:40:30,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 23:40:30,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099397994] [2024-11-18 23:40:30,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:40:30,214 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 23:40:30,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:40:30,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 23:40:30,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 23:40:30,215 INFO L87 Difference]: Start difference. First operand 1509 states and 2440 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 1 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) [2024-11-18 23:40:30,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:40:30,609 INFO L93 Difference]: Finished difference Result 3768 states and 6095 transitions. [2024-11-18 23:40:30,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 23:40:30,610 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 1 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) Word has length 323 [2024-11-18 23:40:30,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:40:30,619 INFO L225 Difference]: With dead ends: 3768 [2024-11-18 23:40:30,619 INFO L226 Difference]: Without dead ends: 2262 [2024-11-18 23:40:30,623 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-18 23:40:30,623 INFO L432 NwaCegarLoop]: 248 mSDtfsCounter, 184 mSDsluCounter, 604 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 852 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 23:40:30,623 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 852 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 23:40:30,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2262 states. [2024-11-18 23:40:30,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2262 to 2204. [2024-11-18 23:40:30,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2204 states, 1753 states have (on average 1.5390758699372504) internal successors, (2698), 1753 states have internal predecessors, (2698), 441 states have call successors, (441), 9 states have call predecessors, (441), 9 states have return successors, (441), 441 states have call predecessors, (441), 441 states have call successors, (441) [2024-11-18 23:40:30,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2204 states to 2204 states and 3580 transitions. [2024-11-18 23:40:30,768 INFO L78 Accepts]: Start accepts. Automaton has 2204 states and 3580 transitions. Word has length 323 [2024-11-18 23:40:30,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:40:30,769 INFO L471 AbstractCegarLoop]: Abstraction has 2204 states and 3580 transitions. [2024-11-18 23:40:30,769 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 1 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) [2024-11-18 23:40:30,769 INFO L276 IsEmpty]: Start isEmpty. Operand 2204 states and 3580 transitions. [2024-11-18 23:40:30,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2024-11-18 23:40:30,773 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:40:30,773 INFO L215 NwaCegarLoop]: trace histogram [49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:40:30,774 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 23:40:30,774 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:40:30,774 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:40:30,774 INFO L85 PathProgramCache]: Analyzing trace with hash 223616844, now seen corresponding path program 1 times [2024-11-18 23:40:30,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:40:30,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334028091] [2024-11-18 23:40:30,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:40:30,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:40:31,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:40:32,118 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 18 proven. 126 refuted. 0 times theorem prover too weak. 4560 trivial. 0 not checked. [2024-11-18 23:40:32,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:40:32,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334028091] [2024-11-18 23:40:32,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334028091] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:40:32,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1368630136] [2024-11-18 23:40:32,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:40:32,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:40:32,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:40:32,123 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 23:40:32,125 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 23:40:32,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:40:32,382 INFO L255 TraceCheckSpWp]: Trace formula consists of 793 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-18 23:40:32,395 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:40:35,167 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 3343 proven. 480 refuted. 0 times theorem prover too weak. 881 trivial. 0 not checked. [2024-11-18 23:40:35,168 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 23:40:39,510 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 330 proven. 489 refuted. 0 times theorem prover too weak. 3885 trivial. 0 not checked. [2024-11-18 23:40:39,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1368630136] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 23:40:39,510 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 23:40:39,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 25, 25] total 55 [2024-11-18 23:40:39,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113056333] [2024-11-18 23:40:39,511 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 23:40:39,512 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2024-11-18 23:40:39,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:40:39,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2024-11-18 23:40:39,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=741, Invalid=2229, Unknown=0, NotChecked=0, Total=2970 [2024-11-18 23:40:39,515 INFO L87 Difference]: Start difference. First operand 2204 states and 3580 transitions. Second operand has 55 states, 53 states have (on average 4.264150943396227) internal successors, (226), 51 states have internal predecessors, (226), 18 states have call successors, (147), 9 states have call predecessors, (147), 20 states have return successors, (147), 18 states have call predecessors, (147), 18 states have call successors, (147) [2024-11-18 23:41:02,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:41:02,331 INFO L93 Difference]: Finished difference Result 28121 states and 43755 transitions. [2024-11-18 23:41:02,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 294 states. [2024-11-18 23:41:02,332 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 53 states have (on average 4.264150943396227) internal successors, (226), 51 states have internal predecessors, (226), 18 states have call successors, (147), 9 states have call predecessors, (147), 20 states have return successors, (147), 18 states have call predecessors, (147), 18 states have call successors, (147) Word has length 323 [2024-11-18 23:41:02,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:41:02,421 INFO L225 Difference]: With dead ends: 28121 [2024-11-18 23:41:02,421 INFO L226 Difference]: Without dead ends: 26291 [2024-11-18 23:41:02,447 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 989 GetRequests, 650 SyntacticMatches, 0 SemanticMatches, 339 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49882 ImplicationChecksByTransitivity, 12.2s TimeCoverageRelationStatistics Valid=18994, Invalid=96946, Unknown=0, NotChecked=0, Total=115940 [2024-11-18 23:41:02,447 INFO L432 NwaCegarLoop]: 678 mSDtfsCounter, 8808 mSDsluCounter, 9248 mSDsCounter, 0 mSdLazyCounter, 12794 mSolverCounterSat, 3289 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8809 SdHoareTripleChecker+Valid, 9926 SdHoareTripleChecker+Invalid, 16083 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3289 IncrementalHoareTripleChecker+Valid, 12794 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2024-11-18 23:41:02,448 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8809 Valid, 9926 Invalid, 16083 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3289 Valid, 12794 Invalid, 0 Unknown, 0 Unchecked, 9.8s Time] [2024-11-18 23:41:02,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26291 states. [2024-11-18 23:41:03,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26291 to 16177. [2024-11-18 23:41:03,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16177 states, 13709 states have (on average 1.533736961120432) internal successors, (21026), 13745 states have internal predecessors, (21026), 2177 states have call successors, (2177), 290 states have call predecessors, (2177), 290 states have return successors, (2177), 2141 states have call predecessors, (2177), 2177 states have call successors, (2177) [2024-11-18 23:41:03,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16177 states to 16177 states and 25380 transitions. [2024-11-18 23:41:03,608 INFO L78 Accepts]: Start accepts. Automaton has 16177 states and 25380 transitions. Word has length 323 [2024-11-18 23:41:03,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:41:03,610 INFO L471 AbstractCegarLoop]: Abstraction has 16177 states and 25380 transitions. [2024-11-18 23:41:03,610 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 53 states have (on average 4.264150943396227) internal successors, (226), 51 states have internal predecessors, (226), 18 states have call successors, (147), 9 states have call predecessors, (147), 20 states have return successors, (147), 18 states have call predecessors, (147), 18 states have call successors, (147) [2024-11-18 23:41:03,611 INFO L276 IsEmpty]: Start isEmpty. Operand 16177 states and 25380 transitions. [2024-11-18 23:41:03,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2024-11-18 23:41:03,621 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:41:03,621 INFO L215 NwaCegarLoop]: trace histogram [49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:41:03,636 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 23:41:03,823 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,SelfDestructingSolverStorable6 [2024-11-18 23:41:03,824 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:41:03,824 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:41:03,825 INFO L85 PathProgramCache]: Analyzing trace with hash -1825770998, now seen corresponding path program 1 times [2024-11-18 23:41:03,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:41:03,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363208197] [2024-11-18 23:41:03,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:41:03,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:41:04,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:41:18,840 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 168 proven. 246 refuted. 0 times theorem prover too weak. 4290 trivial. 0 not checked. [2024-11-18 23:41:18,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:41:18,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363208197] [2024-11-18 23:41:18,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363208197] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:41:18,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [307114043] [2024-11-18 23:41:18,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:41:18,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:41:18,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:41:18,843 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 23:41:18,843 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 23:41:19,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:41:19,050 INFO L255 TraceCheckSpWp]: Trace formula consists of 791 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-11-18 23:41:19,056 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:41:31,912 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 3342 proven. 339 refuted. 0 times theorem prover too weak. 1023 trivial. 0 not checked. [2024-11-18 23:41:31,912 INFO L311 TraceCheckSpWp]: Computing backward predicates...