./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-66.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_fillercode_fillercodestructure_filler-pe-ci_file-66.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 e9f5cbcd9b5e7070eed068152e26dc672bc2b60288a251274726ceb1bf0c8d9b --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 20:15:01,066 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 20:15:01,147 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 20:15:01,153 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 20:15:01,155 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 20:15:01,182 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 20:15:01,184 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 20:15:01,184 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 20:15:01,185 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 20:15:01,185 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 20:15:01,186 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 20:15:01,186 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 20:15:01,187 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 20:15:01,188 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 20:15:01,188 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 20:15:01,190 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 20:15:01,191 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 20:15:01,191 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 20:15:01,191 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 20:15:01,191 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 20:15:01,192 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 20:15:01,192 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 20:15:01,193 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 20:15:01,193 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 20:15:01,193 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 20:15:01,193 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 20:15:01,194 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 20:15:01,194 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 20:15:01,194 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 20:15:01,194 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 20:15:01,195 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 20:15:01,195 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 20:15:01,195 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 20:15:01,195 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 20:15:01,196 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 20:15:01,196 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 20:15:01,196 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 20:15:01,197 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 20:15:01,197 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 20:15:01,198 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 20:15:01,198 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 20:15:01,198 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 20:15:01,199 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e9f5cbcd9b5e7070eed068152e26dc672bc2b60288a251274726ceb1bf0c8d9b [2024-11-18 20:15:01,475 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 20:15:01,501 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 20:15:01,503 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 20:15:01,504 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 20:15:01,505 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 20:15:01,506 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-66.i [2024-11-18 20:15:02,969 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 20:15:03,170 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 20:15:03,171 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-66.i [2024-11-18 20:15:03,185 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33334d154/0a7f798c25d94e39a1a81c002335efb5/FLAG049a5224b [2024-11-18 20:15:03,197 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33334d154/0a7f798c25d94e39a1a81c002335efb5 [2024-11-18 20:15:03,199 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 20:15:03,200 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 20:15:03,201 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 20:15:03,201 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 20:15:03,207 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 20:15:03,208 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:15:03" (1/1) ... [2024-11-18 20:15:03,209 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@677cba08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:15:03, skipping insertion in model container [2024-11-18 20:15:03,209 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:15:03" (1/1) ... [2024-11-18 20:15:03,245 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 20:15:03,417 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_fillercode_fillercodestructure_filler-pe-ci_file-66.i[919,932] [2024-11-18 20:15:03,497 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 20:15:03,508 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 20:15:03,517 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_fillercode_fillercodestructure_filler-pe-ci_file-66.i[919,932] [2024-11-18 20:15:03,546 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 20:15:03,569 INFO L204 MainTranslator]: Completed translation [2024-11-18 20:15:03,570 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:15:03 WrapperNode [2024-11-18 20:15:03,570 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 20:15:03,571 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 20:15:03,572 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 20:15:03,572 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 20:15:03,578 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:15:03" (1/1) ... [2024-11-18 20:15:03,588 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:15:03" (1/1) ... [2024-11-18 20:15:03,626 INFO L138 Inliner]: procedures = 26, calls = 35, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 180 [2024-11-18 20:15:03,626 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 20:15:03,627 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 20:15:03,627 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 20:15:03,627 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 20:15:03,638 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:15:03" (1/1) ... [2024-11-18 20:15:03,638 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:15:03" (1/1) ... [2024-11-18 20:15:03,642 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:15:03" (1/1) ... [2024-11-18 20:15:03,667 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 20:15:03,667 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:15:03" (1/1) ... [2024-11-18 20:15:03,667 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:15:03" (1/1) ... [2024-11-18 20:15:03,679 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:15:03" (1/1) ... [2024-11-18 20:15:03,683 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:15:03" (1/1) ... [2024-11-18 20:15:03,685 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:15:03" (1/1) ... [2024-11-18 20:15:03,687 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:15:03" (1/1) ... [2024-11-18 20:15:03,691 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 20:15:03,693 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 20:15:03,693 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 20:15:03,693 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 20:15:03,694 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:15:03" (1/1) ... [2024-11-18 20:15:03,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 20:15:03,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 20:15:03,732 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 20:15:03,735 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 20:15:03,782 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 20:15:03,783 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-18 20:15:03,784 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-18 20:15:03,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 20:15:03,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 20:15:03,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 20:15:03,874 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 20:15:03,876 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 20:15:04,229 INFO L? ?]: Removed 18 outVars from TransFormulas that were not future-live. [2024-11-18 20:15:04,230 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 20:15:04,243 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 20:15:04,243 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 20:15:04,244 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:15:04 BoogieIcfgContainer [2024-11-18 20:15:04,244 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 20:15:04,246 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 20:15:04,246 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 20:15:04,249 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 20:15:04,249 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:15:03" (1/3) ... [2024-11-18 20:15:04,250 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b89bf7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:15:04, skipping insertion in model container [2024-11-18 20:15:04,250 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:15:03" (2/3) ... [2024-11-18 20:15:04,252 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b89bf7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:15:04, skipping insertion in model container [2024-11-18 20:15:04,252 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:15:04" (3/3) ... [2024-11-18 20:15:04,253 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pe-ci_file-66.i [2024-11-18 20:15:04,271 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 20:15:04,272 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 20:15:04,340 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 20:15:04,352 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;@5f682b2a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 20:15:04,355 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 20:15:04,359 INFO L276 IsEmpty]: Start isEmpty. Operand has 81 states, 56 states have (on average 1.5) internal successors, (84), 57 states have internal predecessors, (84), 22 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-11-18 20:15:04,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2024-11-18 20:15:04,376 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:15:04,377 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:15:04,378 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:15:04,382 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:15:04,383 INFO L85 PathProgramCache]: Analyzing trace with hash -2005476774, now seen corresponding path program 1 times [2024-11-18 20:15:04,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:15:04,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7704562] [2024-11-18 20:15:04,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:15:04,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:15:04,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:15:04,756 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 882 trivial. 0 not checked. [2024-11-18 20:15:04,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:15:04,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7704562] [2024-11-18 20:15:04,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7704562] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 20:15:04,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1347255472] [2024-11-18 20:15:04,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:15:04,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 20:15:04,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 20:15:04,762 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 20:15:04,764 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 20:15:04,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:15:04,951 INFO L255 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-18 20:15:04,963 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 20:15:05,001 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 882 trivial. 0 not checked. [2024-11-18 20:15:05,003 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 20:15:05,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1347255472] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 20:15:05,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 20:15:05,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-18 20:15:05,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112034409] [2024-11-18 20:15:05,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 20:15:05,012 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 20:15:05,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:15:05,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 20:15:05,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 20:15:05,036 INFO L87 Difference]: Start difference. First operand has 81 states, 56 states have (on average 1.5) internal successors, (84), 57 states have internal predecessors, (84), 22 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Second operand has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 2 states have call successors, (22) [2024-11-18 20:15:05,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 20:15:05,067 INFO L93 Difference]: Finished difference Result 155 states and 272 transitions. [2024-11-18 20:15:05,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 20:15:05,087 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 2 states have call successors, (22) Word has length 149 [2024-11-18 20:15:05,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 20:15:05,099 INFO L225 Difference]: With dead ends: 155 [2024-11-18 20:15:05,099 INFO L226 Difference]: Without dead ends: 77 [2024-11-18 20:15:05,103 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 150 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 20:15:05,113 INFO L432 NwaCegarLoop]: 121 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, 121 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 20:15:05,121 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 20:15:05,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-11-18 20:15:05,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2024-11-18 20:15:05,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 53 states have (on average 1.4528301886792452) internal successors, (77), 53 states have internal predecessors, (77), 22 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-11-18 20:15:05,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 121 transitions. [2024-11-18 20:15:05,182 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 121 transitions. Word has length 149 [2024-11-18 20:15:05,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 20:15:05,182 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 121 transitions. [2024-11-18 20:15:05,183 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 2 states have call successors, (22) [2024-11-18 20:15:05,183 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 121 transitions. [2024-11-18 20:15:05,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2024-11-18 20:15:05,186 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:15:05,187 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:15:05,208 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-18 20:15:05,392 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 20:15:05,393 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:15:05,394 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:15:05,394 INFO L85 PathProgramCache]: Analyzing trace with hash -741775274, now seen corresponding path program 1 times [2024-11-18 20:15:05,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:15:05,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400974595] [2024-11-18 20:15:05,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:15:05,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:15:05,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:15:05,806 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-11-18 20:15:05,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:15:05,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400974595] [2024-11-18 20:15:05,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400974595] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 20:15:05,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 20:15:05,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 20:15:05,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177320996] [2024-11-18 20:15:05,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 20:15:05,810 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 20:15:05,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:15:05,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 20:15:05,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 20:15:05,813 INFO L87 Difference]: Start difference. First operand 77 states and 121 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2024-11-18 20:15:06,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 20:15:06,015 INFO L93 Difference]: Finished difference Result 189 states and 295 transitions. [2024-11-18 20:15:06,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 20:15:06,016 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 149 [2024-11-18 20:15:06,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 20:15:06,019 INFO L225 Difference]: With dead ends: 189 [2024-11-18 20:15:06,019 INFO L226 Difference]: Without dead ends: 115 [2024-11-18 20:15:06,020 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 20:15:06,021 INFO L432 NwaCegarLoop]: 125 mSDtfsCounter, 139 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 20:15:06,022 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 213 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 20:15:06,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2024-11-18 20:15:06,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 112. [2024-11-18 20:15:06,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 77 states have (on average 1.4155844155844155) internal successors, (109), 78 states have internal predecessors, (109), 32 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (32), 31 states have call predecessors, (32), 32 states have call successors, (32) [2024-11-18 20:15:06,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 173 transitions. [2024-11-18 20:15:06,048 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 173 transitions. Word has length 149 [2024-11-18 20:15:06,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 20:15:06,049 INFO L471 AbstractCegarLoop]: Abstraction has 112 states and 173 transitions. [2024-11-18 20:15:06,050 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2024-11-18 20:15:06,050 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 173 transitions. [2024-11-18 20:15:06,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2024-11-18 20:15:06,054 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:15:06,055 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:15:06,055 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 20:15:06,055 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:15:06,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:15:06,055 INFO L85 PathProgramCache]: Analyzing trace with hash -61716904, now seen corresponding path program 1 times [2024-11-18 20:15:06,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:15:06,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417227967] [2024-11-18 20:15:06,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:15:06,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:15:06,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:15:06,838 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-11-18 20:15:06,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:15:06,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417227967] [2024-11-18 20:15:06,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417227967] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 20:15:06,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 20:15:06,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 20:15:06,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509647297] [2024-11-18 20:15:06,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 20:15:06,840 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 20:15:06,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:15:06,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 20:15:06,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-18 20:15:06,842 INFO L87 Difference]: Start difference. First operand 112 states and 173 transitions. Second operand has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2024-11-18 20:15:07,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 20:15:07,364 INFO L93 Difference]: Finished difference Result 392 states and 574 transitions. [2024-11-18 20:15:07,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 20:15:07,366 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 149 [2024-11-18 20:15:07,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 20:15:07,373 INFO L225 Difference]: With dead ends: 392 [2024-11-18 20:15:07,374 INFO L226 Difference]: Without dead ends: 283 [2024-11-18 20:15:07,375 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2024-11-18 20:15:07,378 INFO L432 NwaCegarLoop]: 117 mSDtfsCounter, 278 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 20:15:07,378 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [278 Valid, 421 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 20:15:07,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2024-11-18 20:15:07,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 177. [2024-11-18 20:15:07,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 136 states have (on average 1.4558823529411764) internal successors, (198), 139 states have internal predecessors, (198), 36 states have call successors, (36), 4 states have call predecessors, (36), 4 states have return successors, (36), 33 states have call predecessors, (36), 36 states have call successors, (36) [2024-11-18 20:15:07,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 270 transitions. [2024-11-18 20:15:07,419 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 270 transitions. Word has length 149 [2024-11-18 20:15:07,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 20:15:07,421 INFO L471 AbstractCegarLoop]: Abstraction has 177 states and 270 transitions. [2024-11-18 20:15:07,422 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2024-11-18 20:15:07,422 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 270 transitions. [2024-11-18 20:15:07,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-11-18 20:15:07,427 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:15:07,428 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:15:07,428 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 20:15:07,428 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:15:07,428 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:15:07,429 INFO L85 PathProgramCache]: Analyzing trace with hash -1082000927, now seen corresponding path program 1 times [2024-11-18 20:15:07,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:15:07,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496572994] [2024-11-18 20:15:07,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:15:07,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:15:07,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:15:16,568 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-11-18 20:15:16,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:15:16,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496572994] [2024-11-18 20:15:16,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496572994] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 20:15:16,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 20:15:16,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-11-18 20:15:16,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140281940] [2024-11-18 20:15:16,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 20:15:16,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-18 20:15:16,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:15:16,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-18 20:15:16,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=208, Unknown=0, NotChecked=0, Total=306 [2024-11-18 20:15:16,572 INFO L87 Difference]: Start difference. First operand 177 states and 270 transitions. Second operand has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 18 states have internal predecessors, (43), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2024-11-18 20:15:19,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 20:15:19,346 INFO L93 Difference]: Finished difference Result 892 states and 1344 transitions. [2024-11-18 20:15:19,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-18 20:15:19,347 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 18 states have internal predecessors, (43), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 150 [2024-11-18 20:15:19,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 20:15:19,352 INFO L225 Difference]: With dead ends: 892 [2024-11-18 20:15:19,353 INFO L226 Difference]: Without dead ends: 718 [2024-11-18 20:15:19,355 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=141, Invalid=279, Unknown=0, NotChecked=0, Total=420 [2024-11-18 20:15:19,358 INFO L432 NwaCegarLoop]: 93 mSDtfsCounter, 540 mSDsluCounter, 618 mSDsCounter, 0 mSdLazyCounter, 784 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 540 SdHoareTripleChecker+Valid, 711 SdHoareTripleChecker+Invalid, 799 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 784 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-18 20:15:19,358 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [540 Valid, 711 Invalid, 799 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 784 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-18 20:15:19,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2024-11-18 20:15:19,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 400. [2024-11-18 20:15:19,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 339 states have (on average 1.4896755162241888) internal successors, (505), 346 states have internal predecessors, (505), 52 states have call successors, (52), 8 states have call predecessors, (52), 8 states have return successors, (52), 45 states have call predecessors, (52), 52 states have call successors, (52) [2024-11-18 20:15:19,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 609 transitions. [2024-11-18 20:15:19,407 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 609 transitions. Word has length 150 [2024-11-18 20:15:19,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 20:15:19,408 INFO L471 AbstractCegarLoop]: Abstraction has 400 states and 609 transitions. [2024-11-18 20:15:19,409 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 18 states have internal predecessors, (43), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2024-11-18 20:15:19,409 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 609 transitions. [2024-11-18 20:15:19,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-11-18 20:15:19,413 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:15:19,413 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:15:19,414 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 20:15:19,414 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:15:19,414 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:15:19,417 INFO L85 PathProgramCache]: Analyzing trace with hash -719661569, now seen corresponding path program 1 times [2024-11-18 20:15:19,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:15:19,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566140532] [2024-11-18 20:15:19,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:15:19,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:15:19,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:15:23,321 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-11-18 20:15:23,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:15:23,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566140532] [2024-11-18 20:15:23,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566140532] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 20:15:23,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 20:15:23,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-18 20:15:23,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651677917] [2024-11-18 20:15:23,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 20:15:23,324 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-18 20:15:23,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:15:23,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-18 20:15:23,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240 [2024-11-18 20:15:23,325 INFO L87 Difference]: Start difference. First operand 400 states and 609 transitions. Second operand has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2024-11-18 20:15:24,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 20:15:24,505 INFO L93 Difference]: Finished difference Result 713 states and 1046 transitions. [2024-11-18 20:15:24,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-18 20:15:24,506 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 150 [2024-11-18 20:15:24,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 20:15:24,511 INFO L225 Difference]: With dead ends: 713 [2024-11-18 20:15:24,512 INFO L226 Difference]: Without dead ends: 711 [2024-11-18 20:15:24,512 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=105, Invalid=201, Unknown=0, NotChecked=0, Total=306 [2024-11-18 20:15:24,513 INFO L432 NwaCegarLoop]: 93 mSDtfsCounter, 569 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 757 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 569 SdHoareTripleChecker+Valid, 568 SdHoareTripleChecker+Invalid, 769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 757 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-18 20:15:24,513 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [569 Valid, 568 Invalid, 769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 757 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-18 20:15:24,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 711 states. [2024-11-18 20:15:24,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 711 to 403. [2024-11-18 20:15:24,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 342 states have (on average 1.4941520467836258) internal successors, (511), 349 states have internal predecessors, (511), 52 states have call successors, (52), 8 states have call predecessors, (52), 8 states have return successors, (52), 45 states have call predecessors, (52), 52 states have call successors, (52) [2024-11-18 20:15:24,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 615 transitions. [2024-11-18 20:15:24,559 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 615 transitions. Word has length 150 [2024-11-18 20:15:24,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 20:15:24,560 INFO L471 AbstractCegarLoop]: Abstraction has 403 states and 615 transitions. [2024-11-18 20:15:24,560 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2024-11-18 20:15:24,561 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 615 transitions. [2024-11-18 20:15:24,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-11-18 20:15:24,562 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:15:24,563 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:15:24,563 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 20:15:24,563 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:15:24,563 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:15:24,564 INFO L85 PathProgramCache]: Analyzing trace with hash -1481644994, now seen corresponding path program 1 times [2024-11-18 20:15:24,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:15:24,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728724083] [2024-11-18 20:15:24,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:15:24,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:15:24,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:15:30,518 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-11-18 20:15:30,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:15:30,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728724083] [2024-11-18 20:15:30,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728724083] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 20:15:30,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 20:15:30,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2024-11-18 20:15:30,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92891861] [2024-11-18 20:15:30,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 20:15:30,520 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-18 20:15:30,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:15:30,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-18 20:15:30,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2024-11-18 20:15:30,521 INFO L87 Difference]: Start difference. First operand 403 states and 615 transitions. Second operand has 19 states, 19 states have (on average 2.263157894736842) internal successors, (43), 19 states have internal predecessors, (43), 2 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2024-11-18 20:15:34,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 20:15:34,964 INFO L93 Difference]: Finished difference Result 743 states and 1082 transitions. [2024-11-18 20:15:34,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-18 20:15:34,965 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.263157894736842) internal successors, (43), 19 states have internal predecessors, (43), 2 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 150 [2024-11-18 20:15:34,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 20:15:34,969 INFO L225 Difference]: With dead ends: 743 [2024-11-18 20:15:34,969 INFO L226 Difference]: Without dead ends: 741 [2024-11-18 20:15:34,969 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=351, Invalid=839, Unknown=0, NotChecked=0, Total=1190 [2024-11-18 20:15:34,970 INFO L432 NwaCegarLoop]: 88 mSDtfsCounter, 1066 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 1209 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1066 SdHoareTripleChecker+Valid, 501 SdHoareTripleChecker+Invalid, 1237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-18 20:15:34,970 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1066 Valid, 501 Invalid, 1237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1209 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-18 20:15:34,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2024-11-18 20:15:35,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 430. [2024-11-18 20:15:35,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 367 states have (on average 1.4877384196185286) internal successors, (546), 374 states have internal predecessors, (546), 52 states have call successors, (52), 10 states have call predecessors, (52), 10 states have return successors, (52), 45 states have call predecessors, (52), 52 states have call successors, (52) [2024-11-18 20:15:35,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 650 transitions. [2024-11-18 20:15:35,006 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 650 transitions. Word has length 150 [2024-11-18 20:15:35,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 20:15:35,007 INFO L471 AbstractCegarLoop]: Abstraction has 430 states and 650 transitions. [2024-11-18 20:15:35,007 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.263157894736842) internal successors, (43), 19 states have internal predecessors, (43), 2 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2024-11-18 20:15:35,007 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 650 transitions. [2024-11-18 20:15:35,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-11-18 20:15:35,009 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:15:35,009 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:15:35,009 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 20:15:35,010 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:15:35,011 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:15:35,011 INFO L85 PathProgramCache]: Analyzing trace with hash -1668806941, now seen corresponding path program 1 times [2024-11-18 20:15:35,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:15:35,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853353491] [2024-11-18 20:15:35,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:15:35,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:15:35,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:16:14,790 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-11-18 20:16:14,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:16:14,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853353491] [2024-11-18 20:16:14,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853353491] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 20:16:14,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 20:16:14,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-11-18 20:16:14,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912313677] [2024-11-18 20:16:14,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 20:16:14,792 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-18 20:16:14,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:16:14,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-18 20:16:14,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2024-11-18 20:16:14,793 INFO L87 Difference]: Start difference. First operand 430 states and 650 transitions. Second operand has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 18 states have internal predecessors, (43), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2024-11-18 20:16:19,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 20:16:19,450 INFO L93 Difference]: Finished difference Result 732 states and 1065 transitions. [2024-11-18 20:16:19,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-18 20:16:19,451 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 18 states have internal predecessors, (43), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 150 [2024-11-18 20:16:19,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 20:16:19,454 INFO L225 Difference]: With dead ends: 732 [2024-11-18 20:16:19,454 INFO L226 Difference]: Without dead ends: 730 [2024-11-18 20:16:19,455 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=182, Invalid=370, Unknown=0, NotChecked=0, Total=552 [2024-11-18 20:16:19,456 INFO L432 NwaCegarLoop]: 102 mSDtfsCounter, 408 mSDsluCounter, 649 mSDsCounter, 0 mSdLazyCounter, 982 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 408 SdHoareTripleChecker+Valid, 751 SdHoareTripleChecker+Invalid, 983 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 982 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-18 20:16:19,457 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [408 Valid, 751 Invalid, 983 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 982 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-18 20:16:19,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 730 states. [2024-11-18 20:16:19,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 730 to 441. [2024-11-18 20:16:19,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 378 states have (on average 1.4867724867724867) internal successors, (562), 385 states have internal predecessors, (562), 52 states have call successors, (52), 10 states have call predecessors, (52), 10 states have return successors, (52), 45 states have call predecessors, (52), 52 states have call successors, (52) [2024-11-18 20:16:19,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 666 transitions. [2024-11-18 20:16:19,499 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 666 transitions. Word has length 150 [2024-11-18 20:16:19,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 20:16:19,500 INFO L471 AbstractCegarLoop]: Abstraction has 441 states and 666 transitions. [2024-11-18 20:16:19,500 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 18 states have internal predecessors, (43), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2024-11-18 20:16:19,500 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 666 transitions. [2024-11-18 20:16:19,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-11-18 20:16:19,502 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:16:19,502 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:16:19,502 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 20:16:19,503 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:16:19,503 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:16:19,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1306467583, now seen corresponding path program 1 times [2024-11-18 20:16:19,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:16:19,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002680990] [2024-11-18 20:16:19,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:16:19,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:16:19,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:16:25,429 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-11-18 20:16:25,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:16:25,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002680990] [2024-11-18 20:16:25,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002680990] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 20:16:25,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 20:16:25,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-18 20:16:25,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864694149] [2024-11-18 20:16:25,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 20:16:25,431 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-18 20:16:25,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:16:25,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-18 20:16:25,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=185, Unknown=0, NotChecked=0, Total=272 [2024-11-18 20:16:25,432 INFO L87 Difference]: Start difference. First operand 441 states and 666 transitions. Second operand has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22)