./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p18.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/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 /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p18.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-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 64bit --witnessprinter.graph.data.programhash b72f90ebf40fd3c3c0277f56c4a142ed4148949349e56c1308f0c136bbcf9246 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 04:58:32,096 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 04:58:32,141 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-10-24 04:58:32,144 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 04:58:32,145 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 04:58:32,170 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 04:58:32,171 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 04:58:32,172 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 04:58:32,172 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 04:58:32,173 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 04:58:32,173 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 04:58:32,174 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 04:58:32,174 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 04:58:32,176 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 04:58:32,176 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 04:58:32,176 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 04:58:32,177 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 04:58:32,177 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 04:58:32,177 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 04:58:32,177 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 04:58:32,178 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 04:58:32,178 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 04:58:32,178 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 04:58:32,178 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 04:58:32,179 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 04:58:32,179 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 04:58:32,179 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 04:58:32,179 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 04:58:32,179 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 04:58:32,180 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 04:58:32,180 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 04:58:32,180 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 04:58:32,180 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 04:58:32,180 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 04:58:32,181 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 04:58:32,181 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 04:58:32,181 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 04:58:32,181 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 04:58:32,181 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 04:58:32,182 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b72f90ebf40fd3c3c0277f56c4a142ed4148949349e56c1308f0c136bbcf9246 [2024-10-24 04:58:32,374 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 04:58:32,400 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 04:58:32,402 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 04:58:32,403 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 04:58:32,404 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 04:58:32,405 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p18.c [2024-10-24 04:58:33,685 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 04:58:33,844 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 04:58:33,845 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p18.c [2024-10-24 04:58:33,852 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cbb1418ce/8f4781bd0bed447295b71868cd6aa45e/FLAG1d03b5389 [2024-10-24 04:58:33,864 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cbb1418ce/8f4781bd0bed447295b71868cd6aa45e [2024-10-24 04:58:33,867 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 04:58:33,868 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 04:58:33,869 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 04:58:33,869 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 04:58:33,874 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 04:58:33,875 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:58:33" (1/1) ... [2024-10-24 04:58:33,878 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76e0abfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:58:33, skipping insertion in model container [2024-10-24 04:58:33,878 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:58:33" (1/1) ... [2024-10-24 04:58:33,901 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 04:58:34,031 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p18.c[1266,1279] [2024-10-24 04:58:34,077 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 04:58:34,086 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 04:58:34,095 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p18.c[1266,1279] [2024-10-24 04:58:34,117 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 04:58:34,133 INFO L204 MainTranslator]: Completed translation [2024-10-24 04:58:34,134 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:58:34 WrapperNode [2024-10-24 04:58:34,134 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 04:58:34,135 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 04:58:34,135 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 04:58:34,135 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 04:58:34,141 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:58:34" (1/1) ... [2024-10-24 04:58:34,156 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:58:34" (1/1) ... [2024-10-24 04:58:34,235 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 326 [2024-10-24 04:58:34,235 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 04:58:34,237 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 04:58:34,237 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 04:58:34,238 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 04:58:34,247 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:58:34" (1/1) ... [2024-10-24 04:58:34,247 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:58:34" (1/1) ... [2024-10-24 04:58:34,257 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:58:34" (1/1) ... [2024-10-24 04:58:34,275 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]. [2024-10-24 04:58:34,276 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:58:34" (1/1) ... [2024-10-24 04:58:34,276 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:58:34" (1/1) ... [2024-10-24 04:58:34,292 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:58:34" (1/1) ... [2024-10-24 04:58:34,298 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:58:34" (1/1) ... [2024-10-24 04:58:34,306 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:58:34" (1/1) ... [2024-10-24 04:58:34,312 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:58:34" (1/1) ... [2024-10-24 04:58:34,328 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 04:58:34,329 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 04:58:34,329 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 04:58:34,329 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 04:58:34,330 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:58:34" (1/1) ... [2024-10-24 04:58:34,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 04:58:34,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 04:58:34,360 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) [2024-10-24 04:58:34,362 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 [2024-10-24 04:58:34,405 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 04:58:34,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 04:58:34,406 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 04:58:34,407 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 04:58:34,505 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 04:58:34,507 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 04:58:34,919 INFO L? ?]: Removed 124 outVars from TransFormulas that were not future-live. [2024-10-24 04:58:34,920 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 04:58:34,944 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 04:58:34,944 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-24 04:58:34,945 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:58:34 BoogieIcfgContainer [2024-10-24 04:58:34,946 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 04:58:34,947 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 04:58:34,948 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 04:58:34,952 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 04:58:34,952 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 04:58:33" (1/3) ... [2024-10-24 04:58:34,953 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18a096f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:58:34, skipping insertion in model container [2024-10-24 04:58:34,953 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:58:34" (2/3) ... [2024-10-24 04:58:34,953 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18a096f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:58:34, skipping insertion in model container [2024-10-24 04:58:34,953 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:58:34" (3/3) ... [2024-10-24 04:58:34,954 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p18.c [2024-10-24 04:58:34,969 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 04:58:34,969 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-24 04:58:35,024 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 04:58:35,030 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;@5c8dfde1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 04:58:35,030 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-24 04:58:35,035 INFO L276 IsEmpty]: Start isEmpty. Operand has 59 states, 57 states have (on average 1.5087719298245614) internal successors, (86), 58 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:58:35,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-10-24 04:58:35,042 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 04:58:35,042 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 04:58:35,043 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 04:58:35,047 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 04:58:35,047 INFO L85 PathProgramCache]: Analyzing trace with hash -2100058872, now seen corresponding path program 1 times [2024-10-24 04:58:35,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 04:58:35,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251719045] [2024-10-24 04:58:35,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 04:58:35,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 04:58:35,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 04:58:35,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 04:58:35,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 04:58:35,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251719045] [2024-10-24 04:58:35,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251719045] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 04:58:35,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 04:58:35,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 04:58:35,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107094239] [2024-10-24 04:58:35,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 04:58:35,483 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 04:58:35,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 04:58:35,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 04:58:35,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 04:58:35,503 INFO L87 Difference]: Start difference. First operand has 59 states, 57 states have (on average 1.5087719298245614) internal successors, (86), 58 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:58:35,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 04:58:35,558 INFO L93 Difference]: Finished difference Result 98 states and 144 transitions. [2024-10-24 04:58:35,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 04:58:35,561 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-10-24 04:58:35,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 04:58:35,581 INFO L225 Difference]: With dead ends: 98 [2024-10-24 04:58:35,581 INFO L226 Difference]: Without dead ends: 60 [2024-10-24 04:58:35,585 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 04:58:35,590 INFO L432 NwaCegarLoop]: 81 mSDtfsCounter, 0 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 04:58:35,593 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 238 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 04:58:35,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-10-24 04:58:35,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2024-10-24 04:58:35,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.4576271186440677) internal successors, (86), 59 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:58:35,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 86 transitions. [2024-10-24 04:58:35,638 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 86 transitions. Word has length 24 [2024-10-24 04:58:35,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 04:58:35,638 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 86 transitions. [2024-10-24 04:58:35,638 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:58:35,639 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 86 transitions. [2024-10-24 04:58:35,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-10-24 04:58:35,639 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 04:58:35,639 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 04:58:35,640 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 04:58:35,640 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 04:58:35,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 04:58:35,641 INFO L85 PathProgramCache]: Analyzing trace with hash -675620309, now seen corresponding path program 1 times [2024-10-24 04:58:35,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 04:58:35,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712885577] [2024-10-24 04:58:35,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 04:58:35,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 04:58:35,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 04:58:35,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 04:58:35,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 04:58:35,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712885577] [2024-10-24 04:58:35,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712885577] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 04:58:35,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 04:58:35,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 04:58:35,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652439150] [2024-10-24 04:58:35,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 04:58:35,767 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 04:58:35,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 04:58:35,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 04:58:35,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 04:58:35,769 INFO L87 Difference]: Start difference. First operand 60 states and 86 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:58:35,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 04:58:35,794 INFO L93 Difference]: Finished difference Result 101 states and 144 transitions. [2024-10-24 04:58:35,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 04:58:35,794 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2024-10-24 04:58:35,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 04:58:35,795 INFO L225 Difference]: With dead ends: 101 [2024-10-24 04:58:35,798 INFO L226 Difference]: Without dead ends: 62 [2024-10-24 04:58:35,799 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 04:58:35,799 INFO L432 NwaCegarLoop]: 81 mSDtfsCounter, 0 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 04:58:35,800 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 235 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 04:58:35,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-10-24 04:58:35,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2024-10-24 04:58:35,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.4426229508196722) internal successors, (88), 61 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:58:35,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 88 transitions. [2024-10-24 04:58:35,806 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 88 transitions. Word has length 25 [2024-10-24 04:58:35,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 04:58:35,807 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 88 transitions. [2024-10-24 04:58:35,807 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:58:35,807 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 88 transitions. [2024-10-24 04:58:35,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-10-24 04:58:35,808 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 04:58:35,808 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 04:58:35,808 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 04:58:35,809 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 04:58:35,809 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 04:58:35,809 INFO L85 PathProgramCache]: Analyzing trace with hash -567358911, now seen corresponding path program 1 times [2024-10-24 04:58:35,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 04:58:35,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687741018] [2024-10-24 04:58:35,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 04:58:35,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 04:58:35,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 04:58:36,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 04:58:36,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 04:58:36,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687741018] [2024-10-24 04:58:36,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687741018] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 04:58:36,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 04:58:36,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 04:58:36,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743277456] [2024-10-24 04:58:36,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 04:58:36,040 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 04:58:36,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 04:58:36,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 04:58:36,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 04:58:36,042 INFO L87 Difference]: Start difference. First operand 62 states and 88 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:58:36,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 04:58:36,076 INFO L93 Difference]: Finished difference Result 103 states and 145 transitions. [2024-10-24 04:58:36,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 04:58:36,077 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2024-10-24 04:58:36,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 04:58:36,077 INFO L225 Difference]: With dead ends: 103 [2024-10-24 04:58:36,078 INFO L226 Difference]: Without dead ends: 62 [2024-10-24 04:58:36,079 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 04:58:36,080 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 6 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 04:58:36,080 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 223 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 04:58:36,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-10-24 04:58:36,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2024-10-24 04:58:36,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.4262295081967213) internal successors, (87), 61 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:58:36,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 87 transitions. [2024-10-24 04:58:36,090 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 87 transitions. Word has length 26 [2024-10-24 04:58:36,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 04:58:36,092 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 87 transitions. [2024-10-24 04:58:36,092 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:58:36,092 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 87 transitions. [2024-10-24 04:58:36,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-10-24 04:58:36,093 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 04:58:36,094 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 04:58:36,094 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-24 04:58:36,094 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 04:58:36,095 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 04:58:36,095 INFO L85 PathProgramCache]: Analyzing trace with hash 500629874, now seen corresponding path program 1 times [2024-10-24 04:58:36,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 04:58:36,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186630614] [2024-10-24 04:58:36,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 04:58:36,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 04:58:36,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 04:58:36,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 04:58:36,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 04:58:36,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186630614] [2024-10-24 04:58:36,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186630614] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 04:58:36,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 04:58:36,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 04:58:36,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291429377] [2024-10-24 04:58:36,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 04:58:36,465 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 04:58:36,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 04:58:36,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 04:58:36,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-24 04:58:36,466 INFO L87 Difference]: Start difference. First operand 62 states and 87 transitions. Second operand has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:58:36,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 04:58:36,578 INFO L93 Difference]: Finished difference Result 113 states and 157 transitions. [2024-10-24 04:58:36,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-24 04:58:36,578 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2024-10-24 04:58:36,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 04:58:36,579 INFO L225 Difference]: With dead ends: 113 [2024-10-24 04:58:36,579 INFO L226 Difference]: Without dead ends: 72 [2024-10-24 04:58:36,580 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-10-24 04:58:36,580 INFO L432 NwaCegarLoop]: 75 mSDtfsCounter, 88 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 440 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 04:58:36,581 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 440 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 04:58:36,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-10-24 04:58:36,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2024-10-24 04:58:36,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.4142857142857144) internal successors, (99), 70 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:58:36,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 99 transitions. [2024-10-24 04:58:36,585 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 99 transitions. Word has length 27 [2024-10-24 04:58:36,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 04:58:36,585 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 99 transitions. [2024-10-24 04:58:36,585 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:58:36,586 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 99 transitions. [2024-10-24 04:58:36,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-10-24 04:58:36,586 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 04:58:36,586 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 04:58:36,586 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-24 04:58:36,588 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 04:58:36,589 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 04:58:36,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1340996674, now seen corresponding path program 1 times [2024-10-24 04:58:36,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 04:58:36,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096661174] [2024-10-24 04:58:36,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 04:58:36,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 04:58:36,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 04:58:36,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 04:58:36,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 04:58:36,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096661174] [2024-10-24 04:58:36,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096661174] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 04:58:36,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 04:58:36,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 04:58:36,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212699086] [2024-10-24 04:58:36,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 04:58:36,804 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 04:58:36,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 04:58:36,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 04:58:36,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-24 04:58:36,805 INFO L87 Difference]: Start difference. First operand 71 states and 99 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:58:36,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 04:58:36,852 INFO L93 Difference]: Finished difference Result 127 states and 175 transitions. [2024-10-24 04:58:36,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 04:58:36,855 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2024-10-24 04:58:36,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 04:58:36,856 INFO L225 Difference]: With dead ends: 127 [2024-10-24 04:58:36,857 INFO L226 Difference]: Without dead ends: 77 [2024-10-24 04:58:36,858 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-24 04:58:36,860 INFO L432 NwaCegarLoop]: 78 mSDtfsCounter, 71 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 04:58:36,860 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 228 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 04:58:36,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-10-24 04:58:36,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2024-10-24 04:58:36,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 76 states have (on average 1.381578947368421) internal successors, (105), 76 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:58:36,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 105 transitions. [2024-10-24 04:58:36,868 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 105 transitions. Word has length 28 [2024-10-24 04:58:36,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 04:58:36,869 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 105 transitions. [2024-10-24 04:58:36,869 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:58:36,871 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 105 transitions. [2024-10-24 04:58:36,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-10-24 04:58:36,871 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 04:58:36,872 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 04:58:36,872 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-24 04:58:36,872 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 04:58:36,872 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 04:58:36,872 INFO L85 PathProgramCache]: Analyzing trace with hash -815201709, now seen corresponding path program 1 times [2024-10-24 04:58:36,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 04:58:36,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190924530] [2024-10-24 04:58:36,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 04:58:36,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 04:58:36,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 04:58:36,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 04:58:36,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 04:58:36,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190924530] [2024-10-24 04:58:36,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190924530] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 04:58:36,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 04:58:36,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 04:58:36,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342156578] [2024-10-24 04:58:36,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 04:58:36,993 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 04:58:36,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 04:58:36,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 04:58:36,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-24 04:58:36,994 INFO L87 Difference]: Start difference. First operand 77 states and 105 transitions. Second operand has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:58:37,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 04:58:37,126 INFO L93 Difference]: Finished difference Result 165 states and 219 transitions. [2024-10-24 04:58:37,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 04:58:37,127 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2024-10-24 04:58:37,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 04:58:37,128 INFO L225 Difference]: With dead ends: 165 [2024-10-24 04:58:37,129 INFO L226 Difference]: Without dead ends: 109 [2024-10-24 04:58:37,129 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-10-24 04:58:37,130 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 132 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 04:58:37,130 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 248 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 04:58:37,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2024-10-24 04:58:37,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 79. [2024-10-24 04:58:37,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 78 states have (on average 1.3717948717948718) internal successors, (107), 78 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:58:37,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 107 transitions. [2024-10-24 04:58:37,136 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 107 transitions. Word has length 28 [2024-10-24 04:58:37,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 04:58:37,137 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 107 transitions. [2024-10-24 04:58:37,137 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:58:37,137 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 107 transitions. [2024-10-24 04:58:37,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-10-24 04:58:37,137 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 04:58:37,138 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 04:58:37,138 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-24 04:58:37,138 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 04:58:37,139 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 04:58:37,140 INFO L85 PathProgramCache]: Analyzing trace with hash 568572854, now seen corresponding path program 1 times [2024-10-24 04:58:37,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 04:58:37,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113144696] [2024-10-24 04:58:37,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 04:58:37,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 04:58:37,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 04:58:37,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 04:58:37,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 04:58:37,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113144696] [2024-10-24 04:58:37,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113144696] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 04:58:37,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 04:58:37,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 04:58:37,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831283843] [2024-10-24 04:58:37,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 04:58:37,261 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 04:58:37,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 04:58:37,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 04:58:37,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-24 04:58:37,262 INFO L87 Difference]: Start difference. First operand 79 states and 107 transitions. Second operand has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:58:37,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 04:58:37,297 INFO L93 Difference]: Finished difference Result 147 states and 194 transitions. [2024-10-24 04:58:37,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 04:58:37,297 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2024-10-24 04:58:37,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 04:58:37,298 INFO L225 Difference]: With dead ends: 147 [2024-10-24 04:58:37,298 INFO L226 Difference]: Without dead ends: 91 [2024-10-24 04:58:37,298 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-10-24 04:58:37,299 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 98 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 04:58:37,301 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 226 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 04:58:37,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2024-10-24 04:58:37,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 81. [2024-10-24 04:58:37,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 80 states have (on average 1.3625) internal successors, (109), 80 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:58:37,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 109 transitions. [2024-10-24 04:58:37,309 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 109 transitions. Word has length 29 [2024-10-24 04:58:37,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 04:58:37,310 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 109 transitions. [2024-10-24 04:58:37,310 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:58:37,310 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 109 transitions. [2024-10-24 04:58:37,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-10-24 04:58:37,311 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 04:58:37,311 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 04:58:37,311 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-24 04:58:37,311 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 04:58:37,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 04:58:37,311 INFO L85 PathProgramCache]: Analyzing trace with hash -1222470321, now seen corresponding path program 1 times [2024-10-24 04:58:37,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 04:58:37,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330546004] [2024-10-24 04:58:37,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 04:58:37,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 04:58:37,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 04:58:37,615 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 04:58:37,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 04:58:37,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330546004] [2024-10-24 04:58:37,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330546004] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 04:58:37,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [824955577] [2024-10-24 04:58:37,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 04:58:37,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 04:58:37,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 04:58:37,619 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) [2024-10-24 04:58:37,620 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-24 04:58:37,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 04:58:37,750 INFO L255 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-24 04:58:37,756 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 04:58:38,093 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 04:58:38,094 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 04:58:38,422 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 04:58:38,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [824955577] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 04:58:38,422 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 04:58:38,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 15 [2024-10-24 04:58:38,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782915108] [2024-10-24 04:58:38,422 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 04:58:38,423 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-24 04:58:38,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 04:58:38,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-24 04:58:38,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2024-10-24 04:58:38,424 INFO L87 Difference]: Start difference. First operand 81 states and 109 transitions. Second operand has 16 states, 16 states have (on average 7.25) internal successors, (116), 15 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:58:38,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 04:58:38,822 INFO L93 Difference]: Finished difference Result 143 states and 189 transitions. [2024-10-24 04:58:38,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-24 04:58:38,822 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 7.25) internal successors, (116), 15 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2024-10-24 04:58:38,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 04:58:38,823 INFO L225 Difference]: With dead ends: 143 [2024-10-24 04:58:38,823 INFO L226 Difference]: Without dead ends: 87 [2024-10-24 04:58:38,824 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=118, Invalid=434, Unknown=0, NotChecked=0, Total=552 [2024-10-24 04:58:38,824 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 177 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 506 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-24 04:58:38,824 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 180 Invalid, 511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 506 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-24 04:58:38,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2024-10-24 04:58:38,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 80. [2024-10-24 04:58:38,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 1.3037974683544304) internal successors, (103), 79 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:58:38,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 103 transitions. [2024-10-24 04:58:38,832 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 103 transitions. Word has length 48 [2024-10-24 04:58:38,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 04:58:38,832 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 103 transitions. [2024-10-24 04:58:38,833 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.25) internal successors, (116), 15 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:58:38,833 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 103 transitions. [2024-10-24 04:58:38,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-10-24 04:58:38,835 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 04:58:38,836 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 04:58:38,851 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-24 04:58:39,039 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 04:58:39,040 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 04:58:39,040 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 04:58:39,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1933832934, now seen corresponding path program 1 times [2024-10-24 04:58:39,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 04:58:39,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851595309] [2024-10-24 04:58:39,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 04:58:39,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 04:58:39,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 04:58:39,472 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 04:58:39,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 04:58:39,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851595309] [2024-10-24 04:58:39,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851595309] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 04:58:39,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1989735541] [2024-10-24 04:58:39,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 04:58:39,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 04:58:39,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 04:58:39,478 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) [2024-10-24 04:58:39,481 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-24 04:58:39,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 04:58:39,616 INFO L255 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-10-24 04:58:39,621 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 04:58:39,831 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 04:58:39,831 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 04:58:40,007 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-24 04:58:40,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1989735541] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 04:58:40,008 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 04:58:40,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 5] total 15 [2024-10-24 04:58:40,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851879839] [2024-10-24 04:58:40,008 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 04:58:40,009 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-24 04:58:40,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 04:58:40,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-24 04:58:40,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2024-10-24 04:58:40,010 INFO L87 Difference]: Start difference. First operand 80 states and 103 transitions. Second operand has 16 states, 16 states have (on average 7.625) internal successors, (122), 15 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:58:40,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 04:58:40,246 INFO L93 Difference]: Finished difference Result 106 states and 136 transitions. [2024-10-24 04:58:40,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-24 04:58:40,247 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 7.625) internal successors, (122), 15 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2024-10-24 04:58:40,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 04:58:40,247 INFO L225 Difference]: With dead ends: 106 [2024-10-24 04:58:40,247 INFO L226 Difference]: Without dead ends: 0 [2024-10-24 04:58:40,248 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=104, Invalid=316, Unknown=0, NotChecked=0, Total=420 [2024-10-24 04:58:40,248 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 89 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-24 04:58:40,249 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 73 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-24 04:58:40,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-10-24 04:58:40,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-10-24 04:58:40,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:58:40,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-10-24 04:58:40,250 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 50 [2024-10-24 04:58:40,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 04:58:40,250 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-24 04:58:40,250 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.625) internal successors, (122), 15 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 04:58:40,250 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-10-24 04:58:40,250 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-10-24 04:58:40,252 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-24 04:58:40,267 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-24 04:58:40,453 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,SelfDestructingSolverStorable8 [2024-10-24 04:58:40,457 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 04:58:40,458 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-10-24 04:58:40,491 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-24 04:58:40,504 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 04:58:40 BoogieIcfgContainer [2024-10-24 04:58:40,504 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-24 04:58:40,505 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-24 04:58:40,505 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-24 04:58:40,505 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-24 04:58:40,505 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:58:34" (3/4) ... [2024-10-24 04:58:40,507 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-24 04:58:40,517 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2024-10-24 04:58:40,517 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-10-24 04:58:40,518 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-10-24 04:58:40,518 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-10-24 04:58:40,604 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-24 04:58:40,604 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-24 04:58:40,605 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-24 04:58:40,605 INFO L158 Benchmark]: Toolchain (without parser) took 6736.89ms. Allocated memory was 148.9MB in the beginning and 285.2MB in the end (delta: 136.3MB). Free memory was 76.3MB in the beginning and 208.9MB in the end (delta: -132.6MB). Peak memory consumption was 6.1MB. Max. memory is 16.1GB. [2024-10-24 04:58:40,605 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 148.9MB. Free memory is still 100.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-24 04:58:40,606 INFO L158 Benchmark]: CACSL2BoogieTranslator took 264.90ms. Allocated memory is still 148.9MB. Free memory was 76.1MB in the beginning and 60.2MB in the end (delta: 15.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-10-24 04:58:40,606 INFO L158 Benchmark]: Boogie Procedure Inliner took 100.66ms. Allocated memory was 148.9MB in the beginning and 197.1MB in the end (delta: 48.2MB). Free memory was 60.0MB in the beginning and 166.1MB in the end (delta: -106.1MB). Peak memory consumption was 11.2MB. Max. memory is 16.1GB. [2024-10-24 04:58:40,606 INFO L158 Benchmark]: Boogie Preprocessor took 91.93ms. Allocated memory is still 197.1MB. Free memory was 166.1MB in the beginning and 161.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-24 04:58:40,606 INFO L158 Benchmark]: RCFGBuilder took 616.73ms. Allocated memory is still 197.1MB. Free memory was 161.9MB in the beginning and 125.2MB in the end (delta: 36.7MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. [2024-10-24 04:58:40,606 INFO L158 Benchmark]: TraceAbstraction took 5556.75ms. Allocated memory was 197.1MB in the beginning and 285.2MB in the end (delta: 88.1MB). Free memory was 124.2MB in the beginning and 217.3MB in the end (delta: -93.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-24 04:58:40,607 INFO L158 Benchmark]: Witness Printer took 99.97ms. Allocated memory is still 285.2MB. Free memory was 217.3MB in the beginning and 208.9MB in the end (delta: 8.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-10-24 04:58:40,608 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 148.9MB. Free memory is still 100.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 264.90ms. Allocated memory is still 148.9MB. Free memory was 76.1MB in the beginning and 60.2MB in the end (delta: 15.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 100.66ms. Allocated memory was 148.9MB in the beginning and 197.1MB in the end (delta: 48.2MB). Free memory was 60.0MB in the beginning and 166.1MB in the end (delta: -106.1MB). Peak memory consumption was 11.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 91.93ms. Allocated memory is still 197.1MB. Free memory was 166.1MB in the beginning and 161.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 616.73ms. Allocated memory is still 197.1MB. Free memory was 161.9MB in the beginning and 125.2MB in the end (delta: 36.7MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. * TraceAbstraction took 5556.75ms. Allocated memory was 197.1MB in the beginning and 285.2MB in the end (delta: 88.1MB). Free memory was 124.2MB in the beginning and 217.3MB in the end (delta: -93.1MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 99.97ms. Allocated memory is still 285.2MB. Free memory was 217.3MB in the beginning and 208.9MB in the end (delta: 8.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 21]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 59 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 5.4s, OverallIterations: 9, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 661 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 661 mSDsluCounter, 2091 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1512 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1035 IncrementalHoareTripleChecker+Invalid, 1044 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 579 mSDtfsCounter, 1035 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 267 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=81occurred in iteration=7, InterpolantAutomatonStates: 54, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 48 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.0s InterpolantComputationTime, 383 NumberOfCodeBlocks, 383 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 468 ConstructedInterpolants, 0 QuantifiedInterpolants, 2445 SizeOfPredicates, 7 NumberOfNonLiveVariables, 640 ConjunctsInSsa, 56 ConjunctsInUnsatCore, 13 InterpolantComputations, 7 PerfectInterpolantSequences, 63/78 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 86]: Loop Invariant Derived loop invariant: ((((((var_12 == 1) && (state_8 == 0)) && (state_15 == 0)) && (var_22 == 1)) && (mask_SORT_1 == 1)) && (var_7 == 0)) RESULT: Ultimate proved your program to be correct! [2024-10-24 04:58:40,629 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE