./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-32.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_variablewrapping_wrapper-sp_file-32.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 6bdaf076d843757cd349145aa22062c93bd9b98b715a11ab9b45e3c6c7d41988 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 01:16:23,265 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 01:16:23,354 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-19 01:16:23,360 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 01:16:23,361 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 01:16:23,392 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 01:16:23,392 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 01:16:23,393 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 01:16:23,394 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 01:16:23,395 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 01:16:23,395 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 01:16:23,395 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 01:16:23,396 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 01:16:23,397 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 01:16:23,397 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 01:16:23,398 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 01:16:23,398 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 01:16:23,398 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 01:16:23,399 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 01:16:23,399 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 01:16:23,399 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 01:16:23,402 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 01:16:23,402 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 01:16:23,402 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 01:16:23,403 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 01:16:23,403 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 01:16:23,403 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 01:16:23,403 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 01:16:23,404 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 01:16:23,404 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 01:16:23,404 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 01:16:23,404 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 01:16:23,404 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 01:16:23,405 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 01:16:23,405 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 01:16:23,405 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 01:16:23,407 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 01:16:23,407 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 01:16:23,407 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 01:16:23,407 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 01:16:23,407 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 01:16:23,408 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 01:16:23,408 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6bdaf076d843757cd349145aa22062c93bd9b98b715a11ab9b45e3c6c7d41988 [2024-11-19 01:16:23,754 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 01:16:23,782 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 01:16:23,785 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 01:16:23,786 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 01:16:23,787 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 01:16:23,788 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-32.i [2024-11-19 01:16:25,244 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 01:16:25,475 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 01:16:25,476 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-32.i [2024-11-19 01:16:25,489 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/499053b94/0ef0c5eedb12482b8e9b498a750cd136/FLAGa320abe43 [2024-11-19 01:16:25,820 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/499053b94/0ef0c5eedb12482b8e9b498a750cd136 [2024-11-19 01:16:25,822 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 01:16:25,824 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 01:16:25,825 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 01:16:25,825 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 01:16:25,831 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 01:16:25,831 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:16:25" (1/1) ... [2024-11-19 01:16:25,832 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7736ddc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:16:25, skipping insertion in model container [2024-11-19 01:16:25,832 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:16:25" (1/1) ... [2024-11-19 01:16:25,866 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 01:16:26,033 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_variablewrapping_wrapper-sp_file-32.i[917,930] [2024-11-19 01:16:26,093 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 01:16:26,104 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 01:16:26,114 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_variablewrapping_wrapper-sp_file-32.i[917,930] [2024-11-19 01:16:26,148 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 01:16:26,180 INFO L204 MainTranslator]: Completed translation [2024-11-19 01:16:26,181 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:16:26 WrapperNode [2024-11-19 01:16:26,181 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 01:16:26,182 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 01:16:26,182 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 01:16:26,183 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 01:16:26,190 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:16:26" (1/1) ... [2024-11-19 01:16:26,205 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:16:26" (1/1) ... [2024-11-19 01:16:26,301 INFO L138 Inliner]: procedures = 27, calls = 154, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 445 [2024-11-19 01:16:26,301 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 01:16:26,302 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 01:16:26,306 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 01:16:26,306 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 01:16:26,317 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:16:26" (1/1) ... [2024-11-19 01:16:26,318 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:16:26" (1/1) ... [2024-11-19 01:16:26,327 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:16:26" (1/1) ... [2024-11-19 01:16:26,359 INFO L175 MemorySlicer]: Split 125 memory accesses to 2 slices as follows [2, 123]. 98 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 28 writes are split as follows [0, 28]. [2024-11-19 01:16:26,359 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:16:26" (1/1) ... [2024-11-19 01:16:26,359 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:16:26" (1/1) ... [2024-11-19 01:16:26,383 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:16:26" (1/1) ... [2024-11-19 01:16:26,391 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:16:26" (1/1) ... [2024-11-19 01:16:26,395 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:16:26" (1/1) ... [2024-11-19 01:16:26,398 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:16:26" (1/1) ... [2024-11-19 01:16:26,405 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 01:16:26,407 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 01:16:26,407 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 01:16:26,407 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 01:16:26,408 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:16:26" (1/1) ... [2024-11-19 01:16:26,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 01:16:26,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:16:26,443 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) [2024-11-19 01:16:26,448 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 [2024-11-19 01:16:26,502 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 01:16:26,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-11-19 01:16:26,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-11-19 01:16:26,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 01:16:26,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-19 01:16:26,504 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-19 01:16:26,504 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-19 01:16:26,504 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-19 01:16:26,505 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-19 01:16:26,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 01:16:26,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 01:16:26,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 01:16:26,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 01:16:26,636 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 01:16:26,637 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 01:16:27,084 INFO L? ?]: Removed 107 outVars from TransFormulas that were not future-live. [2024-11-19 01:16:27,085 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 01:16:27,102 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 01:16:27,102 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-19 01:16:27,102 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:16:27 BoogieIcfgContainer [2024-11-19 01:16:27,102 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 01:16:27,106 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 01:16:27,106 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 01:16:27,108 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 01:16:27,109 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 01:16:25" (1/3) ... [2024-11-19 01:16:27,109 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14dc23af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:16:27, skipping insertion in model container [2024-11-19 01:16:27,109 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:16:26" (2/3) ... [2024-11-19 01:16:27,110 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14dc23af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:16:27, skipping insertion in model container [2024-11-19 01:16:27,110 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:16:27" (3/3) ... [2024-11-19 01:16:27,111 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-sp_file-32.i [2024-11-19 01:16:27,123 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 01:16:27,124 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-19 01:16:27,176 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 01:16:27,182 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;@24518ae, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 01:16:27,182 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-19 01:16:27,186 INFO L276 IsEmpty]: Start isEmpty. Operand has 99 states, 78 states have (on average 1.3717948717948718) internal successors, (107), 79 states have internal predecessors, (107), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-11-19 01:16:27,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-19 01:16:27,204 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:16:27,205 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:16:27,205 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:16:27,211 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:16:27,212 INFO L85 PathProgramCache]: Analyzing trace with hash 331903658, now seen corresponding path program 1 times [2024-11-19 01:16:27,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:16:27,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130630598] [2024-11-19 01:16:27,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:16:27,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:16:27,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:16:27,689 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked. [2024-11-19 01:16:27,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:16:27,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130630598] [2024-11-19 01:16:27,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130630598] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:16:27,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [53703386] [2024-11-19 01:16:27,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:16:27,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:16:27,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:16:27,696 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) [2024-11-19 01:16:27,698 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 01:16:27,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:16:27,956 INFO L255 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-19 01:16:27,968 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:16:28,011 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked. [2024-11-19 01:16:28,011 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 01:16:28,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [53703386] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:16:28,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 01:16:28,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-19 01:16:28,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776859997] [2024-11-19 01:16:28,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:16:28,022 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-19 01:16:28,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:16:28,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-19 01:16:28,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-19 01:16:28,057 INFO L87 Difference]: Start difference. First operand has 99 states, 78 states have (on average 1.3717948717948718) internal successors, (107), 79 states have internal predecessors, (107), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-19 01:16:28,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:16:28,096 INFO L93 Difference]: Finished difference Result 191 states and 298 transitions. [2024-11-19 01:16:28,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-19 01:16:28,098 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) Word has length 129 [2024-11-19 01:16:28,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:16:28,108 INFO L225 Difference]: With dead ends: 191 [2024-11-19 01:16:28,109 INFO L226 Difference]: Without dead ends: 95 [2024-11-19 01:16:28,114 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-19 01:16:28,119 INFO L432 NwaCegarLoop]: 132 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 01:16:28,119 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 01:16:28,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2024-11-19 01:16:28,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2024-11-19 01:16:28,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 75 states have (on average 1.28) internal successors, (96), 75 states have internal predecessors, (96), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-11-19 01:16:28,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 132 transitions. [2024-11-19 01:16:28,164 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 132 transitions. Word has length 129 [2024-11-19 01:16:28,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:16:28,165 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 132 transitions. [2024-11-19 01:16:28,165 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-19 01:16:28,165 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 132 transitions. [2024-11-19 01:16:28,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-19 01:16:28,169 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:16:28,169 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:16:28,183 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 01:16:28,370 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-19 01:16:28,371 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:16:28,372 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:16:28,372 INFO L85 PathProgramCache]: Analyzing trace with hash -718817914, now seen corresponding path program 1 times [2024-11-19 01:16:28,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:16:28,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213461397] [2024-11-19 01:16:28,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:16:28,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:16:28,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:16:29,020 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-19 01:16:29,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:16:29,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213461397] [2024-11-19 01:16:29,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213461397] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:16:29,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:16:29,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 01:16:29,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472318389] [2024-11-19 01:16:29,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:16:29,024 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 01:16:29,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:16:29,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 01:16:29,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 01:16:29,026 INFO L87 Difference]: Start difference. First operand 95 states and 132 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-19 01:16:29,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:16:29,314 INFO L93 Difference]: Finished difference Result 280 states and 391 transitions. [2024-11-19 01:16:29,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 01:16:29,314 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 129 [2024-11-19 01:16:29,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:16:29,317 INFO L225 Difference]: With dead ends: 280 [2024-11-19 01:16:29,317 INFO L226 Difference]: Without dead ends: 188 [2024-11-19 01:16:29,318 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-19 01:16:29,319 INFO L432 NwaCegarLoop]: 105 mSDtfsCounter, 94 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 01:16:29,320 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 301 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 01:16:29,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2024-11-19 01:16:29,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 157. [2024-11-19 01:16:29,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 118 states have (on average 1.2457627118644068) internal successors, (147), 118 states have internal predecessors, (147), 36 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-11-19 01:16:29,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 219 transitions. [2024-11-19 01:16:29,348 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 219 transitions. Word has length 129 [2024-11-19 01:16:29,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:16:29,349 INFO L471 AbstractCegarLoop]: Abstraction has 157 states and 219 transitions. [2024-11-19 01:16:29,349 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-19 01:16:29,349 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 219 transitions. [2024-11-19 01:16:29,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2024-11-19 01:16:29,353 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:16:29,353 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:16:29,353 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 01:16:29,353 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:16:29,354 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:16:29,354 INFO L85 PathProgramCache]: Analyzing trace with hash -1156097248, now seen corresponding path program 1 times [2024-11-19 01:16:29,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:16:29,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355860001] [2024-11-19 01:16:29,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:16:29,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:16:29,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:16:32,108 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-19 01:16:32,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:16:32,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355860001] [2024-11-19 01:16:32,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355860001] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:16:32,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:16:32,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-19 01:16:32,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812885665] [2024-11-19 01:16:32,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:16:32,112 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-19 01:16:32,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:16:32,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-19 01:16:32,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-11-19 01:16:32,113 INFO L87 Difference]: Start difference. First operand 157 states and 219 transitions. Second operand has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 14 states have internal predecessors, (50), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-19 01:16:33,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:16:33,164 INFO L93 Difference]: Finished difference Result 312 states and 438 transitions. [2024-11-19 01:16:33,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-19 01:16:33,165 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 14 states have internal predecessors, (50), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) Word has length 137 [2024-11-19 01:16:33,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:16:33,170 INFO L225 Difference]: With dead ends: 312 [2024-11-19 01:16:33,170 INFO L226 Difference]: Without dead ends: 220 [2024-11-19 01:16:33,172 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=105, Invalid=447, Unknown=0, NotChecked=0, Total=552 [2024-11-19 01:16:33,173 INFO L432 NwaCegarLoop]: 94 mSDtfsCounter, 252 mSDsluCounter, 493 mSDsCounter, 0 mSdLazyCounter, 786 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 587 SdHoareTripleChecker+Invalid, 795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 786 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-19 01:16:33,173 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [253 Valid, 587 Invalid, 795 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 786 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-19 01:16:33,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2024-11-19 01:16:33,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 189. [2024-11-19 01:16:33,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 150 states have (on average 1.3) internal successors, (195), 150 states have internal predecessors, (195), 36 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-11-19 01:16:33,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 267 transitions. [2024-11-19 01:16:33,216 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 267 transitions. Word has length 137 [2024-11-19 01:16:33,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:16:33,218 INFO L471 AbstractCegarLoop]: Abstraction has 189 states and 267 transitions. [2024-11-19 01:16:33,218 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 14 states have internal predecessors, (50), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-19 01:16:33,219 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 267 transitions. [2024-11-19 01:16:33,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2024-11-19 01:16:33,224 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:16:33,224 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:16:33,225 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 01:16:33,225 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:16:33,225 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:16:33,225 INFO L85 PathProgramCache]: Analyzing trace with hash 1242605664, now seen corresponding path program 1 times [2024-11-19 01:16:33,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:16:33,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906901418] [2024-11-19 01:16:33,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:16:33,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:16:33,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:16:36,003 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-19 01:16:36,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:16:36,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906901418] [2024-11-19 01:16:36,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906901418] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:16:36,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:16:36,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-19 01:16:36,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265227679] [2024-11-19 01:16:36,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:16:36,005 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-19 01:16:36,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:16:36,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-19 01:16:36,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2024-11-19 01:16:36,007 INFO L87 Difference]: Start difference. First operand 189 states and 267 transitions. Second operand has 16 states, 15 states have (on average 3.4) internal successors, (51), 16 states have internal predecessors, (51), 4 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) [2024-11-19 01:16:37,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:16:37,183 INFO L93 Difference]: Finished difference Result 353 states and 497 transitions. [2024-11-19 01:16:37,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-19 01:16:37,183 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.4) internal successors, (51), 16 states have internal predecessors, (51), 4 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) Word has length 138 [2024-11-19 01:16:37,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:16:37,186 INFO L225 Difference]: With dead ends: 353 [2024-11-19 01:16:37,186 INFO L226 Difference]: Without dead ends: 242 [2024-11-19 01:16:37,187 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=130, Invalid=520, Unknown=0, NotChecked=0, Total=650 [2024-11-19 01:16:37,188 INFO L432 NwaCegarLoop]: 93 mSDtfsCounter, 366 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 893 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 367 SdHoareTripleChecker+Valid, 629 SdHoareTripleChecker+Invalid, 923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 893 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-19 01:16:37,189 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [367 Valid, 629 Invalid, 923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 893 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-19 01:16:37,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2024-11-19 01:16:37,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 189. [2024-11-19 01:16:37,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 150 states have (on average 1.3) internal successors, (195), 150 states have internal predecessors, (195), 36 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-11-19 01:16:37,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 267 transitions. [2024-11-19 01:16:37,225 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 267 transitions. Word has length 138 [2024-11-19 01:16:37,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:16:37,228 INFO L471 AbstractCegarLoop]: Abstraction has 189 states and 267 transitions. [2024-11-19 01:16:37,228 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.4) internal successors, (51), 16 states have internal predecessors, (51), 4 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) [2024-11-19 01:16:37,228 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 267 transitions. [2024-11-19 01:16:37,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-11-19 01:16:37,231 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:16:37,231 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:16:37,231 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 01:16:37,231 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:16:37,232 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:16:37,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1038102055, now seen corresponding path program 1 times [2024-11-19 01:16:37,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:16:37,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494251335] [2024-11-19 01:16:37,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:16:37,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:16:37,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat