./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-51.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-51.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 71fa1ece88cae2f03b972f802d0e538a87174ef11cefc651662c60c0e9dd54e7 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 23:44:24,096 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 23:44:24,153 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 23:44:24,161 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 23:44:24,162 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 23:44:24,186 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 23:44:24,187 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 23:44:24,187 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 23:44:24,188 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 23:44:24,188 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 23:44:24,189 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 23:44:24,189 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 23:44:24,189 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 23:44:24,190 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 23:44:24,191 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 23:44:24,191 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 23:44:24,191 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 23:44:24,194 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 23:44:24,194 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 23:44:24,194 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 23:44:24,194 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 23:44:24,195 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 23:44:24,195 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 23:44:24,195 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 23:44:24,195 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 23:44:24,195 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 23:44:24,195 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 23:44:24,195 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 23:44:24,196 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 23:44:24,196 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 23:44:24,196 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 23:44:24,196 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 23:44:24,196 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 23:44:24,197 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 23:44:24,197 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 23:44:24,197 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 23:44:24,197 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 23:44:24,197 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 23:44:24,197 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 23:44:24,198 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 23:44:24,198 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 23:44:24,200 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 23:44:24,200 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 71fa1ece88cae2f03b972f802d0e538a87174ef11cefc651662c60c0e9dd54e7 [2024-11-18 23:44:24,429 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 23:44:24,451 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 23:44:24,454 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 23:44:24,456 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 23:44:24,456 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 23:44:24,457 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-51.i [2024-11-18 23:44:25,895 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 23:44:26,106 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 23:44:26,107 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-51.i [2024-11-18 23:44:26,120 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad1ed5b0b/9e40075dd3e845308c6318df1b00dd7b/FLAG50bba901b [2024-11-18 23:44:26,136 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad1ed5b0b/9e40075dd3e845308c6318df1b00dd7b [2024-11-18 23:44:26,138 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 23:44:26,140 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 23:44:26,141 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 23:44:26,141 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 23:44:26,146 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 23:44:26,147 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:44:26" (1/1) ... [2024-11-18 23:44:26,147 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d88cc80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:44:26, skipping insertion in model container [2024-11-18 23:44:26,148 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:44:26" (1/1) ... [2024-11-18 23:44:26,180 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 23:44:26,347 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-51.i[916,929] [2024-11-18 23:44:26,542 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 23:44:26,556 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 23:44:26,569 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-51.i[916,929] [2024-11-18 23:44:26,635 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 23:44:26,655 INFO L204 MainTranslator]: Completed translation [2024-11-18 23:44:26,658 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:44:26 WrapperNode [2024-11-18 23:44:26,658 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 23:44:26,659 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 23:44:26,659 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 23:44:26,659 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 23:44:26,663 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:44:26" (1/1) ... [2024-11-18 23:44:26,684 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:44:26" (1/1) ... [2024-11-18 23:44:26,753 INFO L138 Inliner]: procedures = 26, calls = 80, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 459 [2024-11-18 23:44:26,754 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 23:44:26,754 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 23:44:26,755 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 23:44:26,755 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 23:44:26,765 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:44:26" (1/1) ... [2024-11-18 23:44:26,765 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:44:26" (1/1) ... [2024-11-18 23:44:26,777 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:44:26" (1/1) ... [2024-11-18 23:44:26,822 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-18 23:44:26,822 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:44:26" (1/1) ... [2024-11-18 23:44:26,822 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:44:26" (1/1) ... [2024-11-18 23:44:26,841 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:44:26" (1/1) ... [2024-11-18 23:44:26,844 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:44:26" (1/1) ... [2024-11-18 23:44:26,854 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:44:26" (1/1) ... [2024-11-18 23:44:26,859 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:44:26" (1/1) ... [2024-11-18 23:44:26,870 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 23:44:26,871 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 23:44:26,871 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 23:44:26,871 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 23:44:26,872 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:44:26" (1/1) ... [2024-11-18 23:44:26,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 23:44:26,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:44:26,897 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-18 23:44:26,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-18 23:44:26,939 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 23:44:26,939 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-18 23:44:26,939 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-18 23:44:26,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 23:44:26,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 23:44:26,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 23:44:27,052 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 23:44:27,054 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 23:44:27,890 INFO L? ?]: Removed 46 outVars from TransFormulas that were not future-live. [2024-11-18 23:44:27,890 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 23:44:27,903 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 23:44:27,903 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 23:44:27,903 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:44:27 BoogieIcfgContainer [2024-11-18 23:44:27,904 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 23:44:27,906 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 23:44:27,906 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 23:44:27,909 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 23:44:27,909 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 11:44:26" (1/3) ... [2024-11-18 23:44:27,910 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ab55ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 11:44:27, skipping insertion in model container [2024-11-18 23:44:27,910 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:44:26" (2/3) ... [2024-11-18 23:44:27,910 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ab55ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 11:44:27, skipping insertion in model container [2024-11-18 23:44:27,910 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:44:27" (3/3) ... [2024-11-18 23:44:27,911 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-51.i [2024-11-18 23:44:27,943 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 23:44:27,943 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 23:44:28,031 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 23:44:28,038 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;@32a2277d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 23:44:28,039 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 23:44:28,044 INFO L276 IsEmpty]: Start isEmpty. Operand has 198 states, 128 states have (on average 1.4609375) internal successors, (187), 129 states have internal predecessors, (187), 67 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) [2024-11-18 23:44:28,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 421 [2024-11-18 23:44:28,071 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:44:28,073 INFO L215 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:44:28,073 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:44:28,078 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:44:28,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1448418911, now seen corresponding path program 1 times [2024-11-18 23:44:28,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:44:28,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021483561] [2024-11-18 23:44:28,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:44:28,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:44:28,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:44:28,902 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2024-11-18 23:44:28,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:44:28,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021483561] [2024-11-18 23:44:28,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021483561] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:44:28,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:44:28,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 23:44:28,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674441849] [2024-11-18 23:44:28,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:44:28,910 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 23:44:28,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:44:28,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 23:44:28,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 23:44:28,936 INFO L87 Difference]: Start difference. First operand has 198 states, 128 states have (on average 1.4609375) internal successors, (187), 129 states have internal predecessors, (187), 67 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-18 23:44:29,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:44:29,060 INFO L93 Difference]: Finished difference Result 490 states and 888 transitions. [2024-11-18 23:44:29,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 23:44:29,064 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 420 [2024-11-18 23:44:29,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:44:29,078 INFO L225 Difference]: With dead ends: 490 [2024-11-18 23:44:29,078 INFO L226 Difference]: Without dead ends: 295 [2024-11-18 23:44:29,084 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 23:44:29,087 INFO L432 NwaCegarLoop]: 450 mSDtfsCounter, 153 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 741 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 23:44:29,090 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 741 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 23:44:29,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2024-11-18 23:44:29,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 292. [2024-11-18 23:44:29,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 197 states have (on average 1.416243654822335) internal successors, (279), 198 states have internal predecessors, (279), 92 states have call successors, (92), 2 states have call predecessors, (92), 2 states have return successors, (92), 91 states have call predecessors, (92), 92 states have call successors, (92) [2024-11-18 23:44:29,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 463 transitions. [2024-11-18 23:44:29,169 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 463 transitions. Word has length 420 [2024-11-18 23:44:29,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:44:29,173 INFO L471 AbstractCegarLoop]: Abstraction has 292 states and 463 transitions. [2024-11-18 23:44:29,173 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-18 23:44:29,174 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 463 transitions. [2024-11-18 23:44:29,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2024-11-18 23:44:29,183 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:44:29,184 INFO L215 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:44:29,184 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 23:44:29,184 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:44:29,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:44:29,185 INFO L85 PathProgramCache]: Analyzing trace with hash -104224948, now seen corresponding path program 1 times [2024-11-18 23:44:29,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:44:29,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418307646] [2024-11-18 23:44:29,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:44:29,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:44:29,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:44:32,224 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2024-11-18 23:44:32,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:44:32,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418307646] [2024-11-18 23:44:32,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418307646] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:44:32,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:44:32,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-18 23:44:32,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471825022] [2024-11-18 23:44:32,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:44:32,228 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-18 23:44:32,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:44:32,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-18 23:44:32,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-11-18 23:44:32,233 INFO L87 Difference]: Start difference. First operand 292 states and 463 transitions. Second operand has 10 states, 10 states have (on average 8.9) internal successors, (89), 10 states have internal predecessors, (89), 2 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 2 states have call predecessors, (67), 2 states have call successors, (67) [2024-11-18 23:44:34,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:44:34,847 INFO L93 Difference]: Finished difference Result 1560 states and 2406 transitions. [2024-11-18 23:44:34,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-18 23:44:34,848 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.9) internal successors, (89), 10 states have internal predecessors, (89), 2 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 2 states have call predecessors, (67), 2 states have call successors, (67) Word has length 421 [2024-11-18 23:44:34,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:44:34,860 INFO L225 Difference]: With dead ends: 1560 [2024-11-18 23:44:34,861 INFO L226 Difference]: Without dead ends: 1271 [2024-11-18 23:44:34,862 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=138, Invalid=324, Unknown=0, NotChecked=0, Total=462 [2024-11-18 23:44:34,866 INFO L432 NwaCegarLoop]: 462 mSDtfsCounter, 769 mSDsluCounter, 2138 mSDsCounter, 0 mSdLazyCounter, 1124 mSolverCounterSat, 448 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 769 SdHoareTripleChecker+Valid, 2600 SdHoareTripleChecker+Invalid, 1572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 448 IncrementalHoareTripleChecker+Valid, 1124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-18 23:44:34,866 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [769 Valid, 2600 Invalid, 1572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [448 Valid, 1124 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-18 23:44:34,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1271 states. [2024-11-18 23:44:34,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1271 to 903. [2024-11-18 23:44:34,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 903 states, 662 states have (on average 1.4425981873111782) internal successors, (955), 668 states have internal predecessors, (955), 232 states have call successors, (232), 8 states have call predecessors, (232), 8 states have return successors, (232), 226 states have call predecessors, (232), 232 states have call successors, (232) [2024-11-18 23:44:34,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 903 states to 903 states and 1419 transitions. [2024-11-18 23:44:34,983 INFO L78 Accepts]: Start accepts. Automaton has 903 states and 1419 transitions. Word has length 421 [2024-11-18 23:44:34,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:44:34,984 INFO L471 AbstractCegarLoop]: Abstraction has 903 states and 1419 transitions. [2024-11-18 23:44:34,985 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.9) internal successors, (89), 10 states have internal predecessors, (89), 2 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 2 states have call predecessors, (67), 2 states have call successors, (67) [2024-11-18 23:44:34,985 INFO L276 IsEmpty]: Start isEmpty. Operand 903 states and 1419 transitions. [2024-11-18 23:44:34,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2024-11-18 23:44:34,990 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:44:34,990 INFO L215 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:44:34,990 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 23:44:34,990 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:44:34,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:44:34,991 INFO L85 PathProgramCache]: Analyzing trace with hash 2141354506, now seen corresponding path program 1 times [2024-11-18 23:44:34,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:44:34,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995080831] [2024-11-18 23:44:34,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:44:34,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:44:35,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:44:35,601 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2024-11-18 23:44:35,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:44:35,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995080831] [2024-11-18 23:44:35,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995080831] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:44:35,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:44:35,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 23:44:35,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981395938] [2024-11-18 23:44:35,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:44:35,603 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 23:44:35,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:44:35,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 23:44:35,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 23:44:35,605 INFO L87 Difference]: Start difference. First operand 903 states and 1419 transitions. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-18 23:44:35,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:44:35,877 INFO L93 Difference]: Finished difference Result 2545 states and 3977 transitions. [2024-11-18 23:44:35,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 23:44:35,877 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 421 [2024-11-18 23:44:35,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:44:35,886 INFO L225 Difference]: With dead ends: 2545 [2024-11-18 23:44:35,887 INFO L226 Difference]: Without dead ends: 1645 [2024-11-18 23:44:35,890 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 23:44:35,890 INFO L432 NwaCegarLoop]: 301 mSDtfsCounter, 387 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 387 SdHoareTripleChecker+Valid, 707 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 23:44:35,891 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [387 Valid, 707 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 23:44:35,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1645 states. [2024-11-18 23:44:35,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1645 to 1006. [2024-11-18 23:44:35,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1006 states, 765 states have (on average 1.473202614379085) internal successors, (1127), 771 states have internal predecessors, (1127), 232 states have call successors, (232), 8 states have call predecessors, (232), 8 states have return successors, (232), 226 states have call predecessors, (232), 232 states have call successors, (232) [2024-11-18 23:44:35,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1006 states to 1006 states and 1591 transitions. [2024-11-18 23:44:35,975 INFO L78 Accepts]: Start accepts. Automaton has 1006 states and 1591 transitions. Word has length 421 [2024-11-18 23:44:35,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:44:35,976 INFO L471 AbstractCegarLoop]: Abstraction has 1006 states and 1591 transitions. [2024-11-18 23:44:35,976 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-18 23:44:35,976 INFO L276 IsEmpty]: Start isEmpty. Operand 1006 states and 1591 transitions. [2024-11-18 23:44:35,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2024-11-18 23:44:35,981 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:44:35,981 INFO L215 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:44:35,981 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 23:44:35,982 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:44:35,982 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:44:35,982 INFO L85 PathProgramCache]: Analyzing trace with hash 147209800, now seen corresponding path program 1 times [2024-11-18 23:44:35,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:44:35,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545587748] [2024-11-18 23:44:35,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:44:35,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:44:36,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:44:36,538 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2024-11-18 23:44:36,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:44:36,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545587748] [2024-11-18 23:44:36,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545587748] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:44:36,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:44:36,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 23:44:36,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530233457] [2024-11-18 23:44:36,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:44:36,540 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 23:44:36,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:44:36,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 23:44:36,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 23:44:36,541 INFO L87 Difference]: Start difference. First operand 1006 states and 1591 transitions. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-18 23:44:36,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:44:36,904 INFO L93 Difference]: Finished difference Result 3685 states and 5795 transitions. [2024-11-18 23:44:36,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 23:44:36,904 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 421 [2024-11-18 23:44:36,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:44:36,918 INFO L225 Difference]: With dead ends: 3685 [2024-11-18 23:44:36,918 INFO L226 Difference]: Without dead ends: 2682 [2024-11-18 23:44:36,921 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 23:44:36,922 INFO L432 NwaCegarLoop]: 408 mSDtfsCounter, 415 mSDsluCounter, 405 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 415 SdHoareTripleChecker+Valid, 813 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 23:44:36,923 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [415 Valid, 813 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 23:44:36,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2682 states. [2024-11-18 23:44:37,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2682 to 2200. [2024-11-18 23:44:37,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2200 states, 1795 states have (on average 1.4958217270194987) internal successors, (2685), 1809 states have internal predecessors, (2685), 388 states have call successors, (388), 16 states have call predecessors, (388), 16 states have return successors, (388), 374 states have call predecessors, (388), 388 states have call successors, (388) [2024-11-18 23:44:37,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2200 states to 2200 states and 3461 transitions. [2024-11-18 23:44:37,078 INFO L78 Accepts]: Start accepts. Automaton has 2200 states and 3461 transitions. Word has length 421 [2024-11-18 23:44:37,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:44:37,079 INFO L471 AbstractCegarLoop]: Abstraction has 2200 states and 3461 transitions. [2024-11-18 23:44:37,079 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-18 23:44:37,079 INFO L276 IsEmpty]: Start isEmpty. Operand 2200 states and 3461 transitions. [2024-11-18 23:44:37,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2024-11-18 23:44:37,086 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:44:37,087 INFO L215 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:44:37,087 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 23:44:37,087 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:44:37,088 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:44:37,088 INFO L85 PathProgramCache]: Analyzing trace with hash -1319595854, now seen corresponding path program 1 times [2024-11-18 23:44:37,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:44:37,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328231719] [2024-11-18 23:44:37,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:44:37,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:44:37,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:44:38,052 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 84 proven. 114 refuted. 0 times theorem prover too weak. 8646 trivial. 0 not checked. [2024-11-18 23:44:38,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:44:38,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328231719] [2024-11-18 23:44:38,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328231719] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:44:38,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [83885449] [2024-11-18 23:44:38,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:44:38,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:44:38,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:44:38,057 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 23:44:38,062 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 23:44:38,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:44:38,298 INFO L255 TraceCheckSpWp]: Trace formula consists of 937 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-18 23:44:38,316 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:44:39,152 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 3496 proven. 51 refuted. 0 times theorem prover too weak. 5297 trivial. 0 not checked. [2024-11-18 23:44:39,152 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 23:44:39,684 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 147 proven. 51 refuted. 0 times theorem prover too weak. 8646 trivial. 0 not checked. [2024-11-18 23:44:39,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [83885449] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 23:44:39,685 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 23:44:39,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 8] total 18 [2024-11-18 23:44:39,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749899400] [2024-11-18 23:44:39,686 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 23:44:39,686 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-18 23:44:39,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:44:39,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-18 23:44:39,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2024-11-18 23:44:39,688 INFO L87 Difference]: Start difference. First operand 2200 states and 3461 transitions. Second operand has 18 states, 18 states have (on average 11.5) internal successors, (207), 18 states have internal predecessors, (207), 5 states have call successors, (172), 3 states have call predecessors, (172), 6 states have return successors, (173), 5 states have call predecessors, (173), 5 states have call successors, (173) [2024-11-18 23:44:44,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:44:44,276 INFO L93 Difference]: Finished difference Result 17180 states and 26787 transitions. [2024-11-18 23:44:44,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2024-11-18 23:44:44,276 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 11.5) internal successors, (207), 18 states have internal predecessors, (207), 5 states have call successors, (172), 3 states have call predecessors, (172), 6 states have return successors, (173), 5 states have call predecessors, (173), 5 states have call successors, (173) Word has length 422 [2024-11-18 23:44:44,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:44:44,323 INFO L225 Difference]: With dead ends: 17180 [2024-11-18 23:44:44,323 INFO L226 Difference]: Without dead ends: 14983 [2024-11-18 23:44:44,332 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 942 GetRequests, 840 SyntacticMatches, 1 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3812 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1905, Invalid=8601, Unknown=0, NotChecked=0, Total=10506 [2024-11-18 23:44:44,333 INFO L432 NwaCegarLoop]: 727 mSDtfsCounter, 2638 mSDsluCounter, 3994 mSDsCounter, 0 mSdLazyCounter, 2812 mSolverCounterSat, 1434 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2640 SdHoareTripleChecker+Valid, 4721 SdHoareTripleChecker+Invalid, 4246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1434 IncrementalHoareTripleChecker+Valid, 2812 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-18 23:44:44,333 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2640 Valid, 4721 Invalid, 4246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1434 Valid, 2812 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-18 23:44:44,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14983 states. [2024-11-18 23:44:44,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14983 to 5059. [2024-11-18 23:44:44,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5059 states, 4176 states have (on average 1.4851532567049808) internal successors, (6202), 4205 states have internal predecessors, (6202), 835 states have call successors, (835), 47 states have call predecessors, (835), 47 states have return successors, (835), 806 states have call predecessors, (835), 835 states have call successors, (835) [2024-11-18 23:44:44,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5059 states to 5059 states and 7872 transitions. [2024-11-18 23:44:44,819 INFO L78 Accepts]: Start accepts. Automaton has 5059 states and 7872 transitions. Word has length 422 [2024-11-18 23:44:44,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:44:44,820 INFO L471 AbstractCegarLoop]: Abstraction has 5059 states and 7872 transitions. [2024-11-18 23:44:44,820 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 11.5) internal successors, (207), 18 states have internal predecessors, (207), 5 states have call successors, (172), 3 states have call predecessors, (172), 6 states have return successors, (173), 5 states have call predecessors, (173), 5 states have call successors, (173) [2024-11-18 23:44:44,820 INFO L276 IsEmpty]: Start isEmpty. Operand 5059 states and 7872 transitions. [2024-11-18 23:44:44,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2024-11-18 23:44:44,828 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:44:44,828 INFO L215 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:44:44,843 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-18 23:44:45,032 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:44:45,033 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:44:45,034 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:44:45,035 INFO L85 PathProgramCache]: Analyzing trace with hash 2117591538, now seen corresponding path program 1 times [2024-11-18 23:44:45,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:44:45,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657169284] [2024-11-18 23:44:45,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:44:45,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:44:45,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:44:47,607 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 87 proven. 303 refuted. 0 times theorem prover too weak. 8454 trivial. 0 not checked. [2024-11-18 23:44:47,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:44:47,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657169284] [2024-11-18 23:44:47,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657169284] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:44:47,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1248827813] [2024-11-18 23:44:47,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:44:47,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:44:47,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:44:47,614 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 23:44:47,628 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 23:44:47,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:44:47,810 INFO L255 TraceCheckSpWp]: Trace formula consists of 938 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-18 23:44:47,817 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:44:48,916 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 3577 proven. 93 refuted. 0 times theorem prover too weak. 5174 trivial. 0 not checked. [2024-11-18 23:44:48,916 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 23:44:49,617 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 297 proven. 96 refuted. 0 times theorem prover too weak. 8451 trivial. 0 not checked. [2024-11-18 23:44:49,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1248827813] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 23:44:49,617 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 23:44:49,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 11] total 27 [2024-11-18 23:44:49,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598175601] [2024-11-18 23:44:49,618 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 23:44:49,619 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-18 23:44:49,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:44:49,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-18 23:44:49,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=579, Unknown=0, NotChecked=0, Total=702 [2024-11-18 23:44:49,621 INFO L87 Difference]: Start difference. First operand 5059 states and 7872 transitions. Second operand has 27 states, 27 states have (on average 8.666666666666666) internal successors, (234), 27 states have internal predecessors, (234), 8 states have call successors, (187), 4 states have call predecessors, (187), 9 states have return successors, (188), 8 states have call predecessors, (188), 8 states have call successors, (188) [2024-11-18 23:45:17,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:45:17,179 INFO L93 Difference]: Finished difference Result 27001 states and 40859 transitions. [2024-11-18 23:45:17,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 269 states. [2024-11-18 23:45:17,180 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 8.666666666666666) internal successors, (234), 27 states have internal predecessors, (234), 8 states have call successors, (187), 4 states have call predecessors, (187), 9 states have return successors, (188), 8 states have call predecessors, (188), 8 states have call successors, (188) Word has length 422 [2024-11-18 23:45:17,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:45:17,235 INFO L225 Difference]: With dead ends: 27001 [2024-11-18 23:45:17,236 INFO L226 Difference]: Without dead ends: 22076 [2024-11-18 23:45:17,261 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1144 GetRequests, 858 SyntacticMatches, 1 SemanticMatches, 285 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36936 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=10686, Invalid=71396, Unknown=0, NotChecked=0, Total=82082 [2024-11-18 23:45:17,262 INFO L432 NwaCegarLoop]: 1727 mSDtfsCounter, 4417 mSDsluCounter, 11118 mSDsCounter, 0 mSdLazyCounter, 17764 mSolverCounterSat, 2162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4433 SdHoareTripleChecker+Valid, 12845 SdHoareTripleChecker+Invalid, 19926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2162 IncrementalHoareTripleChecker+Valid, 17764 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.7s IncrementalHoareTripleChecker+Time [2024-11-18 23:45:17,262 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4433 Valid, 12845 Invalid, 19926 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2162 Valid, 17764 Invalid, 0 Unknown, 0 Unchecked, 14.7s Time] [2024-11-18 23:45:17,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22076 states. [2024-11-18 23:45:18,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22076 to 11600. [2024-11-18 23:45:18,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11600 states, 9156 states have (on average 1.4144823066841417) internal successors, (12951), 9261 states have internal predecessors, (12951), 2216 states have call successors, (2216), 227 states have call predecessors, (2216), 227 states have return successors, (2216), 2111 states have call predecessors, (2216), 2216 states have call successors, (2216) [2024-11-18 23:45:19,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11600 states to 11600 states and 17383 transitions. [2024-11-18 23:45:19,027 INFO L78 Accepts]: Start accepts. Automaton has 11600 states and 17383 transitions. Word has length 422 [2024-11-18 23:45:19,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:45:19,030 INFO L471 AbstractCegarLoop]: Abstraction has 11600 states and 17383 transitions. [2024-11-18 23:45:19,030 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 8.666666666666666) internal successors, (234), 27 states have internal predecessors, (234), 8 states have call successors, (187), 4 states have call predecessors, (187), 9 states have return successors, (188), 8 states have call predecessors, (188), 8 states have call successors, (188) [2024-11-18 23:45:19,030 INFO L276 IsEmpty]: Start isEmpty. Operand 11600 states and 17383 transitions. [2024-11-18 23:45:19,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2024-11-18 23:45:19,049 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:45:19,049 INFO L215 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:45:19,064 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-18 23:45:19,250 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-18 23:45:19,251 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:45:19,251 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:45:19,251 INFO L85 PathProgramCache]: Analyzing trace with hash -2062650645, now seen corresponding path program 1 times [2024-11-18 23:45:19,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:45:19,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033958257] [2024-11-18 23:45:19,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:45:19,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:45:19,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:45:20,706 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2024-11-18 23:45:20,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:45:20,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033958257] [2024-11-18 23:45:20,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033958257] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:45:20,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:45:20,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-18 23:45:20,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41921438] [2024-11-18 23:45:20,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:45:20,708 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-18 23:45:20,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:45:20,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-18 23:45:20,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-11-18 23:45:20,709 INFO L87 Difference]: Start difference. First operand 11600 states and 17383 transitions. Second operand has 10 states, 10 states have (on average 9.1) internal successors, (91), 10 states have internal predecessors, (91), 2 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 2 states have call predecessors, (67), 2 states have call successors, (67) [2024-11-18 23:45:23,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:45:23,622 INFO L93 Difference]: Finished difference Result 28546 states and 42707 transitions. [2024-11-18 23:45:23,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-18 23:45:23,623 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.1) internal successors, (91), 10 states have internal predecessors, (91), 2 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 2 states have call predecessors, (67), 2 states have call successors, (67) Word has length 423 [2024-11-18 23:45:23,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:45:23,674 INFO L225 Difference]: With dead ends: 28546 [2024-11-18 23:45:23,675 INFO L226 Difference]: Without dead ends: 17066 [2024-11-18 23:45:23,697 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=114, Invalid=266, Unknown=0, NotChecked=0, Total=380 [2024-11-18 23:45:23,698 INFO L432 NwaCegarLoop]: 430 mSDtfsCounter, 1048 mSDsluCounter, 1912 mSDsCounter, 0 mSdLazyCounter, 810 mSolverCounterSat, 432 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1048 SdHoareTripleChecker+Valid, 2342 SdHoareTripleChecker+Invalid, 1242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 432 IncrementalHoareTripleChecker+Valid, 810 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-18 23:45:23,698 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1048 Valid, 2342 Invalid, 1242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [432 Valid, 810 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-18 23:45:23,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17066 states. [2024-11-18 23:45:24,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17066 to 12128. [2024-11-18 23:45:24,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12128 states, 9684 states have (on average 1.4228624535315986) internal successors, (13779), 9789 states have internal predecessors, (13779), 2216 states have call successors, (2216), 227 states have call predecessors, (2216), 227 states have return successors, (2216), 2111 states have call predecessors, (2216), 2216 states have call successors, (2216) [2024-11-18 23:45:24,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12128 states to 12128 states and 18211 transitions. [2024-11-18 23:45:24,818 INFO L78 Accepts]: Start accepts. Automaton has 12128 states and 18211 transitions. Word has length 423 [2024-11-18 23:45:24,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:45:24,819 INFO L471 AbstractCegarLoop]: Abstraction has 12128 states and 18211 transitions. [2024-11-18 23:45:24,819 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.1) internal successors, (91), 10 states have internal predecessors, (91), 2 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 2 states have call predecessors, (67), 2 states have call successors, (67) [2024-11-18 23:45:24,819 INFO L276 IsEmpty]: Start isEmpty. Operand 12128 states and 18211 transitions. [2024-11-18 23:45:24,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2024-11-18 23:45:24,829 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:45:24,829 INFO L215 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:45:24,829 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 23:45:24,829 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:45:24,830 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:45:24,830 INFO L85 PathProgramCache]: Analyzing trace with hash 1211248297, now seen corresponding path program 1 times [2024-11-18 23:45:24,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:45:24,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548915070] [2024-11-18 23:45:24,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:45:24,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:45:24,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:45:25,397 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2024-11-18 23:45:25,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:45:25,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548915070] [2024-11-18 23:45:25,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548915070] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:45:25,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:45:25,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 23:45:25,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454980794] [2024-11-18 23:45:25,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:45:25,399 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 23:45:25,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:45:25,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 23:45:25,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 23:45:25,400 INFO L87 Difference]: Start difference. First operand 12128 states and 18211 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-18 23:45:28,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:45:28,104 INFO L93 Difference]: Finished difference Result 35752 states and 53475 transitions. [2024-11-18 23:45:28,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 23:45:28,105 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 423 [2024-11-18 23:45:28,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:45:28,170 INFO L225 Difference]: With dead ends: 35752 [2024-11-18 23:45:28,171 INFO L226 Difference]: Without dead ends: 23744 [2024-11-18 23:45:28,193 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-18 23:45:28,195 INFO L432 NwaCegarLoop]: 378 mSDtfsCounter, 491 mSDsluCounter, 909 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 491 SdHoareTripleChecker+Valid, 1287 SdHoareTripleChecker+Invalid, 404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 23:45:28,195 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [491 Valid, 1287 Invalid, 404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 344 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 23:45:28,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23744 states. [2024-11-18 23:45:29,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23744 to 13530. [2024-11-18 23:45:29,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13530 states, 11000 states have (on average 1.437) internal successors, (15807), 11109 states have internal predecessors, (15807), 2292 states have call successors, (2292), 237 states have call predecessors, (2292), 237 states have return successors, (2292), 2183 states have call predecessors, (2292), 2292 states have call successors, (2292) [2024-11-18 23:45:29,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13530 states to 13530 states and 20391 transitions. [2024-11-18 23:45:29,763 INFO L78 Accepts]: Start accepts. Automaton has 13530 states and 20391 transitions. Word has length 423 [2024-11-18 23:45:29,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:45:29,766 INFO L471 AbstractCegarLoop]: Abstraction has 13530 states and 20391 transitions. [2024-11-18 23:45:29,767 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-18 23:45:29,767 INFO L276 IsEmpty]: Start isEmpty. Operand 13530 states and 20391 transitions. [2024-11-18 23:45:29,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2024-11-18 23:45:29,780 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:45:29,782 INFO L215 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:45:29,783 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 23:45:29,783 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:45:29,785 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:45:29,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1653621451, now seen corresponding path program 1 times [2024-11-18 23:45:29,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:45:29,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368703711] [2024-11-18 23:45:29,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:45:29,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:45:29,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:45:29,903 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2024-11-18 23:45:29,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:45:29,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368703711] [2024-11-18 23:45:29,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368703711] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:45:29,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:45:29,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 23:45:29,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445296288] [2024-11-18 23:45:29,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:45:29,905 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 23:45:29,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:45:29,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 23:45:29,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 23:45:29,906 INFO L87 Difference]: Start difference. First operand 13530 states and 20391 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-18 23:45:31,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:45:31,162 INFO L93 Difference]: Finished difference Result 27673 states and 41665 transitions. [2024-11-18 23:45:31,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 23:45:31,163 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 423 [2024-11-18 23:45:31,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:45:31,199 INFO L225 Difference]: With dead ends: 27673 [2024-11-18 23:45:31,199 INFO L226 Difference]: Without dead ends: 14263 [2024-11-18 23:45:31,219 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 23:45:31,219 INFO L432 NwaCegarLoop]: 411 mSDtfsCounter, 301 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 702 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 23:45:31,220 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [301 Valid, 702 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 23:45:31,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14263 states. [2024-11-18 23:45:32,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14263 to 10020. [2024-11-18 23:45:32,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10020 states, 8090 states have (on average 1.4281829419035847) internal successors, (11554), 8165 states have internal predecessors, (11554), 1744 states have call successors, (1744), 185 states have call predecessors, (1744), 185 states have return successors, (1744), 1669 states have call predecessors, (1744), 1744 states have call successors, (1744) [2024-11-18 23:45:32,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10020 states to 10020 states and 15042 transitions. [2024-11-18 23:45:32,184 INFO L78 Accepts]: Start accepts. Automaton has 10020 states and 15042 transitions. Word has length 423 [2024-11-18 23:45:32,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:45:32,185 INFO L471 AbstractCegarLoop]: Abstraction has 10020 states and 15042 transitions. [2024-11-18 23:45:32,185 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-18 23:45:32,185 INFO L276 IsEmpty]: Start isEmpty. Operand 10020 states and 15042 transitions. [2024-11-18 23:45:32,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2024-11-18 23:45:32,194 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:45:32,194 INFO L215 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:45:32,194 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-18 23:45:32,194 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:45:32,194 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:45:32,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1361366613, now seen corresponding path program 1 times [2024-11-18 23:45:32,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:45:32,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074084433] [2024-11-18 23:45:32,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:45:32,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:45:32,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:45:32,966 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 39 proven. 159 refuted. 0 times theorem prover too weak. 8646 trivial. 0 not checked. [2024-11-18 23:45:32,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:45:32,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074084433] [2024-11-18 23:45:32,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074084433] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:45:32,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [249173822] [2024-11-18 23:45:32,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:45:32,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:45:32,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:45:32,971 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 23:45:32,972 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 23:45:33,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:45:33,172 INFO L255 TraceCheckSpWp]: Trace formula consists of 938 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-18 23:45:33,177 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:45:34,041 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 4581 proven. 129 refuted. 0 times theorem prover too weak. 4134 trivial. 0 not checked. [2024-11-18 23:45:34,041 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 23:45:34,496 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 69 proven. 129 refuted. 0 times theorem prover too weak. 8646 trivial. 0 not checked. [2024-11-18 23:45:34,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [249173822] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 23:45:34,503 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 23:45:34,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 18 [2024-11-18 23:45:34,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719802740] [2024-11-18 23:45:34,504 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 23:45:34,505 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-18 23:45:34,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:45:34,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-18 23:45:34,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2024-11-18 23:45:34,506 INFO L87 Difference]: Start difference. First operand 10020 states and 15042 transitions. Second operand has 18 states, 18 states have (on average 13.5) internal successors, (243), 18 states have internal predecessors, (243), 7 states have call successors, (192), 3 states have call predecessors, (192), 6 states have return successors, (192), 7 states have call predecessors, (192), 7 states have call successors, (192) [2024-11-18 23:45:37,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:45:37,779 INFO L93 Difference]: Finished difference Result 16648 states and 24731 transitions. [2024-11-18 23:45:37,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-18 23:45:37,787 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 13.5) internal successors, (243), 18 states have internal predecessors, (243), 7 states have call successors, (192), 3 states have call predecessors, (192), 6 states have return successors, (192), 7 states have call predecessors, (192), 7 states have call successors, (192) Word has length 424 [2024-11-18 23:45:37,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:45:37,825 INFO L225 Difference]: With dead ends: 16648 [2024-11-18 23:45:37,825 INFO L226 Difference]: Without dead ends: 6748 [2024-11-18 23:45:37,841 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 877 GetRequests, 842 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=331, Invalid=1001, Unknown=0, NotChecked=0, Total=1332 [2024-11-18 23:45:37,842 INFO L432 NwaCegarLoop]: 257 mSDtfsCounter, 1603 mSDsluCounter, 1541 mSDsCounter, 0 mSdLazyCounter, 1370 mSolverCounterSat, 711 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1626 SdHoareTripleChecker+Valid, 1798 SdHoareTripleChecker+Invalid, 2081 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 711 IncrementalHoareTripleChecker+Valid, 1370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-18 23:45:37,843 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1626 Valid, 1798 Invalid, 2081 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [711 Valid, 1370 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-18 23:45:37,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6748 states. [2024-11-18 23:45:38,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6748 to 5762. [2024-11-18 23:45:38,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5762 states, 4411 states have (on average 1.381092722738608) internal successors, (6092), 4434 states have internal predecessors, (6092), 1148 states have call successors, (1148), 202 states have call predecessors, (1148), 202 states have return successors, (1148), 1125 states have call predecessors, (1148), 1148 states have call successors, (1148) [2024-11-18 23:45:38,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5762 states to 5762 states and 8388 transitions. [2024-11-18 23:45:38,591 INFO L78 Accepts]: Start accepts. Automaton has 5762 states and 8388 transitions. Word has length 424 [2024-11-18 23:45:38,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:45:38,592 INFO L471 AbstractCegarLoop]: Abstraction has 5762 states and 8388 transitions. [2024-11-18 23:45:38,592 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 13.5) internal successors, (243), 18 states have internal predecessors, (243), 7 states have call successors, (192), 3 states have call predecessors, (192), 6 states have return successors, (192), 7 states have call predecessors, (192), 7 states have call successors, (192) [2024-11-18 23:45:38,592 INFO L276 IsEmpty]: Start isEmpty. Operand 5762 states and 8388 transitions. [2024-11-18 23:45:38,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2024-11-18 23:45:38,597 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:45:38,597 INFO L215 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:45:38,614 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-18 23:45:38,802 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:45:38,802 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:45:38,803 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:45:38,803 INFO L85 PathProgramCache]: Analyzing trace with hash 2028913786, now seen corresponding path program 1 times [2024-11-18 23:45:38,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:45:38,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358331906] [2024-11-18 23:45:38,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:45:38,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:45:39,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:45:39,757 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 63 proven. 327 refuted. 0 times theorem prover too weak. 8454 trivial. 0 not checked. [2024-11-18 23:45:39,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:45:39,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358331906] [2024-11-18 23:45:39,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358331906] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:45:39,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1016095377] [2024-11-18 23:45:39,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:45:39,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:45:39,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:45:39,759 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 23:45:39,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-18 23:45:39,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:45:39,954 INFO L255 TraceCheckSpWp]: Trace formula consists of 939 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-18 23:45:39,964 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:45:41,489 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 3264 proven. 441 refuted. 0 times theorem prover too weak. 5139 trivial. 0 not checked. [2024-11-18 23:45:41,489 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 23:45:42,106 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 93 proven. 300 refuted. 0 times theorem prover too weak. 8451 trivial. 0 not checked. [2024-11-18 23:45:42,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1016095377] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 23:45:42,107 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 23:45:42,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 12, 9] total 21 [2024-11-18 23:45:42,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929256729] [2024-11-18 23:45:42,107 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 23:45:42,108 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-18 23:45:42,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:45:42,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-18 23:45:42,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=316, Unknown=0, NotChecked=0, Total=420 [2024-11-18 23:45:42,110 INFO L87 Difference]: Start difference. First operand 5762 states and 8388 transitions. Second operand has 21 states, 21 states have (on average 10.476190476190476) internal successors, (220), 21 states have internal predecessors, (220), 7 states have call successors, (177), 4 states have call predecessors, (177), 7 states have return successors, (179), 7 states have call predecessors, (179), 7 states have call successors, (179)