./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-33.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-pr-co_file-33.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 5c234e2fefe11c7ac0093946cc9cf5ef419837c81c25df397f2c3f9610af0164 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 21:05:53,075 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 21:05:53,163 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 21:05:53,171 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 21:05:53,172 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 21:05:53,195 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 21:05:53,196 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 21:05:53,197 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 21:05:53,197 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 21:05:53,197 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 21:05:53,198 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 21:05:53,198 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 21:05:53,199 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 21:05:53,199 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 21:05:53,200 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 21:05:53,200 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 21:05:53,200 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 21:05:53,201 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 21:05:53,201 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 21:05:53,201 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 21:05:53,202 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 21:05:53,202 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 21:05:53,202 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 21:05:53,205 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 21:05:53,206 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 21:05:53,206 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 21:05:53,206 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 21:05:53,206 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 21:05:53,207 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 21:05:53,207 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 21:05:53,207 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 21:05:53,207 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 21:05:53,207 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 21:05:53,208 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 21:05:53,208 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 21:05:53,208 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 21:05:53,209 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 21:05:53,209 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 21:05:53,209 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 21:05:53,209 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 21:05:53,209 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 21:05:53,211 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 21:05:53,211 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5c234e2fefe11c7ac0093946cc9cf5ef419837c81c25df397f2c3f9610af0164 [2024-11-18 21:05:53,469 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 21:05:53,496 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 21:05:53,499 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 21:05:53,500 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 21:05:53,501 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 21:05:53,502 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-33.i [2024-11-18 21:05:54,938 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 21:05:55,174 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 21:05:55,175 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-33.i [2024-11-18 21:05:55,197 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/405004aeb/ff3d077e03ed47afa46f4064f0b2938d/FLAG336b00380 [2024-11-18 21:05:55,529 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/405004aeb/ff3d077e03ed47afa46f4064f0b2938d [2024-11-18 21:05:55,534 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 21:05:55,536 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 21:05:55,537 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 21:05:55,538 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 21:05:55,544 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 21:05:55,545 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:05:55" (1/1) ... [2024-11-18 21:05:55,547 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bfa986f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:05:55, skipping insertion in model container [2024-11-18 21:05:55,548 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:05:55" (1/1) ... [2024-11-18 21:05:55,581 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 21:05:55,768 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-pr-co_file-33.i[919,932] [2024-11-18 21:05:55,859 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 21:05:55,883 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 21:05:55,898 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-pr-co_file-33.i[919,932] [2024-11-18 21:05:55,953 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 21:05:55,978 INFO L204 MainTranslator]: Completed translation [2024-11-18 21:05:55,979 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:05:55 WrapperNode [2024-11-18 21:05:55,979 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 21:05:55,980 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 21:05:55,981 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 21:05:55,981 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 21:05:55,988 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:05:55" (1/1) ... [2024-11-18 21:05:56,002 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:05:55" (1/1) ... [2024-11-18 21:05:56,050 INFO L138 Inliner]: procedures = 26, calls = 47, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 226 [2024-11-18 21:05:56,051 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 21:05:56,052 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 21:05:56,052 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 21:05:56,052 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 21:05:56,066 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:05:55" (1/1) ... [2024-11-18 21:05:56,067 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:05:55" (1/1) ... [2024-11-18 21:05:56,071 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:05:55" (1/1) ... [2024-11-18 21:05:56,092 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 21:05:56,093 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:05:55" (1/1) ... [2024-11-18 21:05:56,093 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:05:55" (1/1) ... [2024-11-18 21:05:56,116 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:05:55" (1/1) ... [2024-11-18 21:05:56,124 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:05:55" (1/1) ... [2024-11-18 21:05:56,131 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:05:55" (1/1) ... [2024-11-18 21:05:56,134 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:05:55" (1/1) ... [2024-11-18 21:05:56,146 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 21:05:56,147 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 21:05:56,147 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 21:05:56,148 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 21:05:56,149 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:05:55" (1/1) ... [2024-11-18 21:05:56,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 21:05:56,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 21:05:56,189 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 21:05:56,192 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 21:05:56,246 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 21:05:56,246 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-18 21:05:56,247 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-18 21:05:56,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 21:05:56,248 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 21:05:56,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 21:05:56,358 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 21:05:56,361 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 21:05:56,912 INFO L? ?]: Removed 15 outVars from TransFormulas that were not future-live. [2024-11-18 21:05:56,913 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 21:05:56,933 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 21:05:56,934 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 21:05:56,935 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:05:56 BoogieIcfgContainer [2024-11-18 21:05:56,935 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 21:05:56,938 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 21:05:56,939 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 21:05:56,942 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 21:05:56,943 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 09:05:55" (1/3) ... [2024-11-18 21:05:56,944 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38c02f6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:05:56, skipping insertion in model container [2024-11-18 21:05:56,944 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:05:55" (2/3) ... [2024-11-18 21:05:56,945 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38c02f6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:05:56, skipping insertion in model container [2024-11-18 21:05:56,945 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:05:56" (3/3) ... [2024-11-18 21:05:56,946 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pr-co_file-33.i [2024-11-18 21:05:56,964 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 21:05:56,965 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 21:05:57,038 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 21:05:57,045 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;@4caf1681, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 21:05:57,046 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 21:05:57,051 INFO L276 IsEmpty]: Start isEmpty. Operand has 101 states, 64 states have (on average 1.421875) internal successors, (91), 65 states have internal predecessors, (91), 34 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-11-18 21:05:57,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2024-11-18 21:05:57,067 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:05:57,068 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:05:57,069 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:05:57,074 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:05:57,075 INFO L85 PathProgramCache]: Analyzing trace with hash 962189530, now seen corresponding path program 1 times [2024-11-18 21:05:57,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:05:57,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88480415] [2024-11-18 21:05:57,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:05:57,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:05:57,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:05:57,549 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 2178 trivial. 0 not checked. [2024-11-18 21:05:57,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:05:57,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88480415] [2024-11-18 21:05:57,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88480415] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 21:05:57,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1376129135] [2024-11-18 21:05:57,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:05:57,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 21:05:57,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 21:05:57,555 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 21:05:57,557 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 21:05:57,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:05:57,820 INFO L255 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-18 21:05:57,837 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 21:05:57,889 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 2178 trivial. 0 not checked. [2024-11-18 21:05:57,890 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 21:05:57,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1376129135] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:05:57,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 21:05:57,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-18 21:05:57,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524873074] [2024-11-18 21:05:57,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:05:57,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 21:05:57,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:05:57,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 21:05:57,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 21:05:57,932 INFO L87 Difference]: Start difference. First operand has 101 states, 64 states have (on average 1.421875) internal successors, (91), 65 states have internal predecessors, (91), 34 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Second operand has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 2 states have call successors, (34) [2024-11-18 21:05:57,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:05:57,967 INFO L93 Difference]: Finished difference Result 193 states and 342 transitions. [2024-11-18 21:05:57,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 21:05:57,969 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 2 states have call successors, (34) Word has length 214 [2024-11-18 21:05:57,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:05:57,978 INFO L225 Difference]: With dead ends: 193 [2024-11-18 21:05:57,978 INFO L226 Difference]: Without dead ends: 95 [2024-11-18 21:05:57,982 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 215 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 21:05:57,986 INFO L432 NwaCegarLoop]: 144 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 21:05:57,987 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 21:05:58,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2024-11-18 21:05:58,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2024-11-18 21:05:58,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 59 states have (on average 1.2881355932203389) internal successors, (76), 59 states have internal predecessors, (76), 34 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-11-18 21:05:58,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 144 transitions. [2024-11-18 21:05:58,051 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 144 transitions. Word has length 214 [2024-11-18 21:05:58,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:05:58,051 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 144 transitions. [2024-11-18 21:05:58,052 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 2 states have call successors, (34) [2024-11-18 21:05:58,052 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 144 transitions. [2024-11-18 21:05:58,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2024-11-18 21:05:58,057 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:05:58,057 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:05:58,073 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 21:05:58,258 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 21:05:58,258 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:05:58,259 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:05:58,259 INFO L85 PathProgramCache]: Analyzing trace with hash 620498464, now seen corresponding path program 1 times [2024-11-18 21:05:58,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:05:58,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634882433] [2024-11-18 21:05:58,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:05:58,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:05:58,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:05:58,877 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-18 21:05:58,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:05:58,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634882433] [2024-11-18 21:05:58,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634882433] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:05:58,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 21:05:58,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 21:05:58,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768956114] [2024-11-18 21:05:58,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:05:58,884 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 21:05:58,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:05:58,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 21:05:58,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 21:05:58,890 INFO L87 Difference]: Start difference. First operand 95 states and 144 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2024-11-18 21:05:59,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:05:59,056 INFO L93 Difference]: Finished difference Result 267 states and 411 transitions. [2024-11-18 21:05:59,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 21:05:59,056 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 214 [2024-11-18 21:05:59,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:05:59,064 INFO L225 Difference]: With dead ends: 267 [2024-11-18 21:05:59,065 INFO L226 Difference]: Without dead ends: 175 [2024-11-18 21:05:59,067 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 21:05:59,069 INFO L432 NwaCegarLoop]: 138 mSDtfsCounter, 111 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 21:05:59,071 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 265 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 21:05:59,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2024-11-18 21:05:59,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 172. [2024-11-18 21:05:59,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 101 states have (on average 1.2772277227722773) internal successors, (129), 101 states have internal predecessors, (129), 68 states have call successors, (68), 2 states have call predecessors, (68), 2 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) [2024-11-18 21:05:59,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 265 transitions. [2024-11-18 21:05:59,131 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 265 transitions. Word has length 214 [2024-11-18 21:05:59,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:05:59,132 INFO L471 AbstractCegarLoop]: Abstraction has 172 states and 265 transitions. [2024-11-18 21:05:59,132 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2024-11-18 21:05:59,132 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 265 transitions. [2024-11-18 21:05:59,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2024-11-18 21:05:59,139 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:05:59,139 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:05:59,139 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 21:05:59,139 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:05:59,140 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:05:59,141 INFO L85 PathProgramCache]: Analyzing trace with hash -2016827840, now seen corresponding path program 1 times [2024-11-18 21:05:59,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:05:59,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635759586] [2024-11-18 21:05:59,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:05:59,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:05:59,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:05:59,897 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-18 21:05:59,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:05:59,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635759586] [2024-11-18 21:05:59,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635759586] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:05:59,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 21:05:59,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 21:05:59,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197385518] [2024-11-18 21:05:59,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:05:59,902 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 21:05:59,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:05:59,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 21:05:59,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 21:05:59,903 INFO L87 Difference]: Start difference. First operand 172 states and 265 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-18 21:06:00,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:06:00,294 INFO L93 Difference]: Finished difference Result 302 states and 460 transitions. [2024-11-18 21:06:00,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 21:06:00,295 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 215 [2024-11-18 21:06:00,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:06:00,298 INFO L225 Difference]: With dead ends: 302 [2024-11-18 21:06:00,298 INFO L226 Difference]: Without dead ends: 193 [2024-11-18 21:06:00,303 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 21:06:00,304 INFO L432 NwaCegarLoop]: 125 mSDtfsCounter, 93 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 21:06:00,305 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 360 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 21:06:00,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2024-11-18 21:06:00,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 178. [2024-11-18 21:06:00,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 107 states have (on average 1.2710280373831775) internal successors, (136), 107 states have internal predecessors, (136), 68 states have call successors, (68), 2 states have call predecessors, (68), 2 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) [2024-11-18 21:06:00,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 272 transitions. [2024-11-18 21:06:00,364 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 272 transitions. Word has length 215 [2024-11-18 21:06:00,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:06:00,366 INFO L471 AbstractCegarLoop]: Abstraction has 178 states and 272 transitions. [2024-11-18 21:06:00,366 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-18 21:06:00,366 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 272 transitions. [2024-11-18 21:06:00,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2024-11-18 21:06:00,370 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:06:00,371 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:06:00,371 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 21:06:00,372 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:06:00,372 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:06:00,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1625840135, now seen corresponding path program 1 times [2024-11-18 21:06:00,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:06:00,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133093802] [2024-11-18 21:06:00,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:06:00,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:06:00,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:06:00,689 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-18 21:06:00,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:06:00,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133093802] [2024-11-18 21:06:00,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133093802] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:06:00,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 21:06:00,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 21:06:00,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684347303] [2024-11-18 21:06:00,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:06:00,691 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 21:06:00,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:06:00,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 21:06:00,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 21:06:00,693 INFO L87 Difference]: Start difference. First operand 178 states and 272 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-18 21:06:00,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:06:00,964 INFO L93 Difference]: Finished difference Result 303 states and 458 transitions. [2024-11-18 21:06:00,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 21:06:00,965 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 216 [2024-11-18 21:06:00,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:06:00,970 INFO L225 Difference]: With dead ends: 303 [2024-11-18 21:06:00,970 INFO L226 Difference]: Without dead ends: 188 [2024-11-18 21:06:00,971 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 21:06:00,972 INFO L432 NwaCegarLoop]: 124 mSDtfsCounter, 90 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 21:06:00,972 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 370 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 21:06:00,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2024-11-18 21:06:01,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 179. [2024-11-18 21:06:01,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 108 states have (on average 1.2592592592592593) internal successors, (136), 108 states have internal predecessors, (136), 68 states have call successors, (68), 2 states have call predecessors, (68), 2 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) [2024-11-18 21:06:01,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 272 transitions. [2024-11-18 21:06:01,015 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 272 transitions. Word has length 216 [2024-11-18 21:06:01,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:06:01,016 INFO L471 AbstractCegarLoop]: Abstraction has 179 states and 272 transitions. [2024-11-18 21:06:01,016 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-18 21:06:01,016 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 272 transitions. [2024-11-18 21:06:01,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2024-11-18 21:06:01,018 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:06:01,019 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:06:01,019 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 21:06:01,019 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:06:01,022 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:06:01,022 INFO L85 PathProgramCache]: Analyzing trace with hash -1976243485, now seen corresponding path program 1 times [2024-11-18 21:06:01,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:06:01,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773632541] [2024-11-18 21:06:01,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:06:01,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:06:01,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:06:01,693 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-18 21:06:01,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:06:01,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773632541] [2024-11-18 21:06:01,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773632541] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:06:01,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 21:06:01,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 21:06:01,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460712636] [2024-11-18 21:06:01,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:06:01,697 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 21:06:01,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:06:01,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 21:06:01,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 21:06:01,702 INFO L87 Difference]: Start difference. First operand 179 states and 272 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-18 21:06:02,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:06:02,103 INFO L93 Difference]: Finished difference Result 299 states and 454 transitions. [2024-11-18 21:06:02,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 21:06:02,104 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 217 [2024-11-18 21:06:02,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:06:02,106 INFO L225 Difference]: With dead ends: 299 [2024-11-18 21:06:02,106 INFO L226 Difference]: Without dead ends: 188 [2024-11-18 21:06:02,107 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-18 21:06:02,108 INFO L432 NwaCegarLoop]: 129 mSDtfsCounter, 83 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 21:06:02,108 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 417 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 21:06:02,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2024-11-18 21:06:02,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 179. [2024-11-18 21:06:02,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 108 states have (on average 1.25) internal successors, (135), 108 states have internal predecessors, (135), 68 states have call successors, (68), 2 states have call predecessors, (68), 2 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) [2024-11-18 21:06:02,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 271 transitions. [2024-11-18 21:06:02,134 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 271 transitions. Word has length 217 [2024-11-18 21:06:02,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:06:02,135 INFO L471 AbstractCegarLoop]: Abstraction has 179 states and 271 transitions. [2024-11-18 21:06:02,136 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-18 21:06:02,136 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 271 transitions. [2024-11-18 21:06:02,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2024-11-18 21:06:02,138 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:06:02,138 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:06:02,139 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 21:06:02,139 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:06:02,139 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:06:02,139 INFO L85 PathProgramCache]: Analyzing trace with hash 629780069, now seen corresponding path program 1 times [2024-11-18 21:06:02,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:06:02,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005739788] [2024-11-18 21:06:02,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:06:02,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:06:02,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:06:06,748 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-18 21:06:06,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:06:06,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005739788] [2024-11-18 21:06:06,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005739788] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:06:06,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 21:06:06,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-18 21:06:06,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041563432] [2024-11-18 21:06:06,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:06:06,750 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-18 21:06:06,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:06:06,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-18 21:06:06,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-18 21:06:06,757 INFO L87 Difference]: Start difference. First operand 179 states and 271 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-18 21:06:08,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:06:08,405 INFO L93 Difference]: Finished difference Result 367 states and 530 transitions. [2024-11-18 21:06:08,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-18 21:06:08,406 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 217 [2024-11-18 21:06:08,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:06:08,409 INFO L225 Difference]: With dead ends: 367 [2024-11-18 21:06:08,409 INFO L226 Difference]: Without dead ends: 265 [2024-11-18 21:06:08,410 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2024-11-18 21:06:08,411 INFO L432 NwaCegarLoop]: 115 mSDtfsCounter, 429 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 610 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 429 SdHoareTripleChecker+Valid, 568 SdHoareTripleChecker+Invalid, 714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-18 21:06:08,411 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [429 Valid, 568 Invalid, 714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 610 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-18 21:06:08,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2024-11-18 21:06:08,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 188. [2024-11-18 21:06:08,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 117 states have (on average 1.2478632478632479) internal successors, (146), 117 states have internal predecessors, (146), 68 states have call successors, (68), 2 states have call predecessors, (68), 2 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) [2024-11-18 21:06:08,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 282 transitions. [2024-11-18 21:06:08,440 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 282 transitions. Word has length 217 [2024-11-18 21:06:08,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:06:08,441 INFO L471 AbstractCegarLoop]: Abstraction has 188 states and 282 transitions. [2024-11-18 21:06:08,441 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-18 21:06:08,441 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 282 transitions. [2024-11-18 21:06:08,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2024-11-18 21:06:08,443 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:06:08,444 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:06:08,444 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 21:06:08,444 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:06:08,444 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:06:08,445 INFO L85 PathProgramCache]: Analyzing trace with hash 887945507, now seen corresponding path program 1 times [2024-11-18 21:06:08,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:06:08,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975754223] [2024-11-18 21:06:08,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:06:08,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:06:08,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat