./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.paper_v3.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 61a67961 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.paper_v3.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 1a93b4c325da61bdb0bcf5f7bfce47877e5238073f7401e4883b579f193ca117 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 06:39:52,031 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 06:39:52,135 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-10-14 06:39:52,144 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 06:39:52,145 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 06:39:52,176 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 06:39:52,177 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 06:39:52,178 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 06:39:52,179 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 06:39:52,181 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 06:39:52,182 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 06:39:52,182 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 06:39:52,183 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 06:39:52,187 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 06:39:52,188 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 06:39:52,188 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 06:39:52,189 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-14 06:39:52,189 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 06:39:52,189 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 06:39:52,189 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-14 06:39:52,189 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 06:39:52,190 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-14 06:39:52,190 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 06:39:52,190 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-14 06:39:52,191 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 06:39:52,192 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 06:39:52,192 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 06:39:52,192 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 06:39:52,193 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 06:39:52,193 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 06:39:52,194 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 06:39:52,194 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 06:39:52,195 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-14 06:39:52,195 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 06:39:52,195 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 06:39:52,196 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 06:39:52,196 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 06:39:52,196 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 06:39:52,196 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 06:39:52,196 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1a93b4c325da61bdb0bcf5f7bfce47877e5238073f7401e4883b579f193ca117 [2024-10-14 06:39:52,469 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 06:39:52,493 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 06:39:52,496 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 06:39:52,497 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 06:39:52,498 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 06:39:52,499 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.paper_v3.c [2024-10-14 06:39:54,343 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 06:39:54,565 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 06:39:54,566 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.paper_v3.c [2024-10-14 06:39:54,576 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b7338ab0/77d527bfa7d544f0905dd9ffbba8e79c/FLAGc37d3a3db [2024-10-14 06:39:54,591 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b7338ab0/77d527bfa7d544f0905dd9ffbba8e79c [2024-10-14 06:39:54,594 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 06:39:54,595 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 06:39:54,596 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 06:39:54,596 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 06:39:54,608 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 06:39:54,610 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 06:39:54" (1/1) ... [2024-10-14 06:39:54,611 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67af12f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:39:54, skipping insertion in model container [2024-10-14 06:39:54,611 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 06:39:54" (1/1) ... [2024-10-14 06:39:54,638 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 06:39:54,783 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.paper_v3.c[1248,1261] [2024-10-14 06:39:54,831 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 06:39:54,848 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 06:39:54,861 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.paper_v3.c[1248,1261] [2024-10-14 06:39:54,894 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 06:39:54,912 INFO L204 MainTranslator]: Completed translation [2024-10-14 06:39:54,916 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:39:54 WrapperNode [2024-10-14 06:39:54,917 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 06:39:54,918 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 06:39:54,918 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 06:39:54,918 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 06:39:54,927 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:39:54" (1/1) ... [2024-10-14 06:39:54,937 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:39:54" (1/1) ... [2024-10-14 06:39:55,027 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 188 [2024-10-14 06:39:55,030 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 06:39:55,032 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 06:39:55,032 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 06:39:55,032 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 06:39:55,053 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:39:54" (1/1) ... [2024-10-14 06:39:55,054 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:39:54" (1/1) ... [2024-10-14 06:39:55,061 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:39:54" (1/1) ... [2024-10-14 06:39:55,157 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]. [2024-10-14 06:39:55,161 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:39:54" (1/1) ... [2024-10-14 06:39:55,165 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:39:54" (1/1) ... [2024-10-14 06:39:55,174 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:39:54" (1/1) ... [2024-10-14 06:39:55,178 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:39:54" (1/1) ... [2024-10-14 06:39:55,181 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:39:54" (1/1) ... [2024-10-14 06:39:55,184 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:39:54" (1/1) ... [2024-10-14 06:39:55,188 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 06:39:55,190 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 06:39:55,190 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 06:39:55,190 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 06:39:55,191 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:39:54" (1/1) ... [2024-10-14 06:39:55,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 06:39:55,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 06:39:55,227 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) [2024-10-14 06:39:55,231 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 [2024-10-14 06:39:55,276 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 06:39:55,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-14 06:39:55,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 06:39:55,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 06:39:55,357 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 06:39:55,360 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 06:39:55,793 INFO L? ?]: Removed 105 outVars from TransFormulas that were not future-live. [2024-10-14 06:39:55,794 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 06:39:55,817 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 06:39:55,817 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-14 06:39:55,817 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 06:39:55 BoogieIcfgContainer [2024-10-14 06:39:55,818 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 06:39:55,819 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 06:39:55,819 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 06:39:55,822 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 06:39:55,823 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 06:39:54" (1/3) ... [2024-10-14 06:39:55,823 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4846b223 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 06:39:55, skipping insertion in model container [2024-10-14 06:39:55,823 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:39:54" (2/3) ... [2024-10-14 06:39:55,824 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4846b223 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 06:39:55, skipping insertion in model container [2024-10-14 06:39:55,824 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 06:39:55" (3/3) ... [2024-10-14 06:39:55,825 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.paper_v3.c [2024-10-14 06:39:55,849 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 06:39:55,853 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-14 06:39:55,906 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 06:39:55,913 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;@6e93088b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 06:39:55,913 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-14 06:39:55,923 INFO L276 IsEmpty]: Start isEmpty. Operand has 47 states, 45 states have (on average 1.511111111111111) internal successors, (68), 46 states have internal predecessors, (68), 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) [2024-10-14 06:39:55,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-10-14 06:39:55,930 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 06:39:55,930 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 06:39:55,931 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 06:39:55,936 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 06:39:55,936 INFO L85 PathProgramCache]: Analyzing trace with hash 1952044744, now seen corresponding path program 1 times [2024-10-14 06:39:55,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 06:39:55,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064910475] [2024-10-14 06:39:55,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 06:39:55,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 06:39:56,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 06:39:56,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 06:39:56,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 06:39:56,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064910475] [2024-10-14 06:39:56,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064910475] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 06:39:56,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 06:39:56,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 06:39:56,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394919231] [2024-10-14 06:39:56,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 06:39:56,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 06:39:56,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 06:39:56,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 06:39:56,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 06:39:56,426 INFO L87 Difference]: Start difference. First operand has 47 states, 45 states have (on average 1.511111111111111) internal successors, (68), 46 states have internal predecessors, (68), 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 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2024-10-14 06:39:56,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 06:39:56,501 INFO L93 Difference]: Finished difference Result 86 states and 126 transitions. [2024-10-14 06:39:56,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 06:39:56,504 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 12 [2024-10-14 06:39:56,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 06:39:56,516 INFO L225 Difference]: With dead ends: 86 [2024-10-14 06:39:56,516 INFO L226 Difference]: Without dead ends: 48 [2024-10-14 06:39:56,521 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 [2024-10-14 06:39:56,528 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 0 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 184 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 [2024-10-14 06:39:56,531 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 184 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 06:39:56,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-10-14 06:39:56,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2024-10-14 06:39:56,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.446808510638298) internal successors, (68), 47 states have internal predecessors, (68), 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) [2024-10-14 06:39:56,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 68 transitions. [2024-10-14 06:39:56,570 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 68 transitions. Word has length 12 [2024-10-14 06:39:56,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 06:39:56,570 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 68 transitions. [2024-10-14 06:39:56,571 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2024-10-14 06:39:56,571 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 68 transitions. [2024-10-14 06:39:56,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-10-14 06:39:56,572 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 06:39:56,572 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 06:39:56,573 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 06:39:56,573 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 06:39:56,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 06:39:56,574 INFO L85 PathProgramCache]: Analyzing trace with hash 385540125, now seen corresponding path program 1 times [2024-10-14 06:39:56,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 06:39:56,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405648377] [2024-10-14 06:39:56,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 06:39:56,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 06:39:56,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 06:39:56,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 06:39:56,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 06:39:56,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405648377] [2024-10-14 06:39:56,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405648377] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 06:39:56,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 06:39:56,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 06:39:56,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676567040] [2024-10-14 06:39:56,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 06:39:56,728 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 06:39:56,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 06:39:56,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 06:39:56,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 06:39:56,732 INFO L87 Difference]: Start difference. First operand 48 states and 68 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2024-10-14 06:39:56,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 06:39:56,765 INFO L93 Difference]: Finished difference Result 89 states and 126 transitions. [2024-10-14 06:39:56,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 06:39:56,766 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 13 [2024-10-14 06:39:56,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 06:39:56,767 INFO L225 Difference]: With dead ends: 89 [2024-10-14 06:39:56,767 INFO L226 Difference]: Without dead ends: 50 [2024-10-14 06:39:56,768 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 [2024-10-14 06:39:56,769 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 0 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 181 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 [2024-10-14 06:39:56,769 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 181 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 06:39:56,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-10-14 06:39:56,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2024-10-14 06:39:56,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.4285714285714286) internal successors, (70), 49 states have internal predecessors, (70), 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) [2024-10-14 06:39:56,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 70 transitions. [2024-10-14 06:39:56,775 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 70 transitions. Word has length 13 [2024-10-14 06:39:56,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 06:39:56,776 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 70 transitions. [2024-10-14 06:39:56,776 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2024-10-14 06:39:56,777 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 70 transitions. [2024-10-14 06:39:56,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-10-14 06:39:56,777 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 06:39:56,777 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 06:39:56,778 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-14 06:39:56,778 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 06:39:56,779 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 06:39:56,779 INFO L85 PathProgramCache]: Analyzing trace with hash -2031123903, now seen corresponding path program 1 times [2024-10-14 06:39:56,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 06:39:56,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071984584] [2024-10-14 06:39:56,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 06:39:56,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 06:39:56,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 06:39:57,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 06:39:57,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 06:39:57,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071984584] [2024-10-14 06:39:57,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071984584] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 06:39:57,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 06:39:57,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 06:39:57,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953362779] [2024-10-14 06:39:57,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 06:39:57,148 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 06:39:57,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 06:39:57,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 06:39:57,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-14 06:39:57,150 INFO L87 Difference]: Start difference. First operand 50 states and 70 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 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) [2024-10-14 06:39:57,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 06:39:57,255 INFO L93 Difference]: Finished difference Result 118 states and 165 transitions. [2024-10-14 06:39:57,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 06:39:57,257 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 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 14 [2024-10-14 06:39:57,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 06:39:57,259 INFO L225 Difference]: With dead ends: 118 [2024-10-14 06:39:57,261 INFO L226 Difference]: Without dead ends: 77 [2024-10-14 06:39:57,262 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-14 06:39:57,263 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 44 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 06:39:57,263 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 216 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 06:39:57,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-10-14 06:39:57,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 52. [2024-10-14 06:39:57,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.411764705882353) internal successors, (72), 51 states have internal predecessors, (72), 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) [2024-10-14 06:39:57,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 72 transitions. [2024-10-14 06:39:57,274 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 72 transitions. Word has length 14 [2024-10-14 06:39:57,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 06:39:57,275 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 72 transitions. [2024-10-14 06:39:57,275 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 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) [2024-10-14 06:39:57,275 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 72 transitions. [2024-10-14 06:39:57,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-10-14 06:39:57,276 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 06:39:57,276 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-14 06:39:57,276 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-14 06:39:57,276 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 06:39:57,277 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 06:39:57,277 INFO L85 PathProgramCache]: Analyzing trace with hash -849728661, now seen corresponding path program 1 times [2024-10-14 06:39:57,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 06:39:57,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057242694] [2024-10-14 06:39:57,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 06:39:57,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 06:39:57,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 06:39:57,855 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 06:39:57,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 06:39:57,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057242694] [2024-10-14 06:39:57,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057242694] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 06:39:57,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [157640537] [2024-10-14 06:39:57,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 06:39:57,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 06:39:57,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 06:39:57,867 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) [2024-10-14 06:39:57,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-14 06:39:58,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 06:39:58,023 INFO L255 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-10-14 06:39:58,032 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 06:39:58,272 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 06:39:58,272 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 06:39:58,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [157640537] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 06:39:58,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 06:39:58,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 12 [2024-10-14 06:39:58,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104501397] [2024-10-14 06:39:58,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 06:39:58,274 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 06:39:58,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 06:39:58,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 06:39:58,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2024-10-14 06:39:58,275 INFO L87 Difference]: Start difference. First operand 52 states and 72 transitions. Second operand has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 6 states have internal predecessors, (33), 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) [2024-10-14 06:39:58,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 06:39:58,562 INFO L93 Difference]: Finished difference Result 121 states and 169 transitions. [2024-10-14 06:39:58,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 06:39:58,563 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 6 states have internal predecessors, (33), 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 33 [2024-10-14 06:39:58,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 06:39:58,566 INFO L225 Difference]: With dead ends: 121 [2024-10-14 06:39:58,566 INFO L226 Difference]: Without dead ends: 80 [2024-10-14 06:39:58,566 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2024-10-14 06:39:58,570 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 37 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-14 06:39:58,571 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 227 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-14 06:39:58,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-10-14 06:39:58,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 74. [2024-10-14 06:39:58,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 1.3835616438356164) internal successors, (101), 73 states have internal predecessors, (101), 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) [2024-10-14 06:39:58,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 101 transitions. [2024-10-14 06:39:58,587 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 101 transitions. Word has length 33 [2024-10-14 06:39:58,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 06:39:58,587 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 101 transitions. [2024-10-14 06:39:58,587 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 6 states have internal predecessors, (33), 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) [2024-10-14 06:39:58,587 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 101 transitions. [2024-10-14 06:39:58,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-10-14 06:39:58,588 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 06:39:58,588 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-14 06:39:58,609 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-14 06:39:58,794 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 06:39:58,796 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 06:39:58,796 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 06:39:58,799 INFO L85 PathProgramCache]: Analyzing trace with hash -1415939021, now seen corresponding path program 1 times [2024-10-14 06:39:58,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 06:39:58,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639211131] [2024-10-14 06:39:58,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 06:39:58,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 06:39:58,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 06:39:59,275 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 06:39:59,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 06:39:59,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639211131] [2024-10-14 06:39:59,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639211131] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 06:39:59,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 06:39:59,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-14 06:39:59,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255685755] [2024-10-14 06:39:59,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 06:39:59,277 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 06:39:59,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 06:39:59,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 06:39:59,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-14 06:39:59,279 INFO L87 Difference]: Start difference. First operand 74 states and 101 transitions. Second operand has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 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) [2024-10-14 06:39:59,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 06:39:59,387 INFO L93 Difference]: Finished difference Result 171 states and 236 transitions. [2024-10-14 06:39:59,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-14 06:39:59,388 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 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 34 [2024-10-14 06:39:59,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 06:39:59,389 INFO L225 Difference]: With dead ends: 171 [2024-10-14 06:39:59,389 INFO L226 Difference]: Without dead ends: 130 [2024-10-14 06:39:59,392 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-10-14 06:39:59,393 INFO L432 NwaCegarLoop]: 93 mSDtfsCounter, 60 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 508 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 06:39:59,393 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 508 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 06:39:59,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2024-10-14 06:39:59,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 93. [2024-10-14 06:39:59,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 92 states have (on average 1.3695652173913044) internal successors, (126), 92 states have internal predecessors, (126), 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) [2024-10-14 06:39:59,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 126 transitions. [2024-10-14 06:39:59,409 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 126 transitions. Word has length 34 [2024-10-14 06:39:59,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 06:39:59,409 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 126 transitions. [2024-10-14 06:39:59,410 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 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) [2024-10-14 06:39:59,410 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 126 transitions. [2024-10-14 06:39:59,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-10-14 06:39:59,411 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 06:39:59,411 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-14 06:39:59,411 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-14 06:39:59,411 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 06:39:59,412 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 06:39:59,414 INFO L85 PathProgramCache]: Analyzing trace with hash -1993897390, now seen corresponding path program 1 times [2024-10-14 06:39:59,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 06:39:59,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207152353] [2024-10-14 06:39:59,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 06:39:59,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 06:39:59,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 06:40:00,089 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 06:40:00,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 06:40:00,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207152353] [2024-10-14 06:40:00,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207152353] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 06:40:00,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 06:40:00,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-14 06:40:00,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410491915] [2024-10-14 06:40:00,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 06:40:00,092 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-14 06:40:00,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 06:40:00,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-14 06:40:00,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-10-14 06:40:00,095 INFO L87 Difference]: Start difference. First operand 93 states and 126 transitions. Second operand has 8 states, 8 states have (on average 4.375) internal successors, (35), 7 states have internal predecessors, (35), 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) [2024-10-14 06:40:00,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 06:40:00,289 INFO L93 Difference]: Finished difference Result 247 states and 336 transitions. [2024-10-14 06:40:00,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-14 06:40:00,289 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 7 states have internal predecessors, (35), 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 35 [2024-10-14 06:40:00,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 06:40:00,290 INFO L225 Difference]: With dead ends: 247 [2024-10-14 06:40:00,294 INFO L226 Difference]: Without dead ends: 109 [2024-10-14 06:40:00,295 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-10-14 06:40:00,296 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 102 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 06:40:00,296 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 364 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 06:40:00,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2024-10-14 06:40:00,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 95. [2024-10-14 06:40:00,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 94 states have (on average 1.351063829787234) internal successors, (127), 94 states have internal predecessors, (127), 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) [2024-10-14 06:40:00,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 127 transitions. [2024-10-14 06:40:00,308 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 127 transitions. Word has length 35 [2024-10-14 06:40:00,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 06:40:00,309 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 127 transitions. [2024-10-14 06:40:00,309 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 7 states have internal predecessors, (35), 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) [2024-10-14 06:40:00,309 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 127 transitions. [2024-10-14 06:40:00,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-10-14 06:40:00,310 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 06:40:00,311 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-14 06:40:00,311 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-14 06:40:00,311 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 06:40:00,312 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 06:40:00,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1235051301, now seen corresponding path program 1 times [2024-10-14 06:40:00,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 06:40:00,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536963462] [2024-10-14 06:40:00,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 06:40:00,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 06:40:00,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 06:40:00,754 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 06:40:00,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 06:40:00,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536963462] [2024-10-14 06:40:00,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536963462] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 06:40:00,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 06:40:00,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 06:40:00,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372249369] [2024-10-14 06:40:00,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 06:40:00,757 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 06:40:00,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 06:40:00,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 06:40:00,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-14 06:40:00,757 INFO L87 Difference]: Start difference. First operand 95 states and 127 transitions. Second operand has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 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) [2024-10-14 06:40:00,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 06:40:00,838 INFO L93 Difference]: Finished difference Result 188 states and 257 transitions. [2024-10-14 06:40:00,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-14 06:40:00,841 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 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 36 [2024-10-14 06:40:00,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 06:40:00,842 INFO L225 Difference]: With dead ends: 188 [2024-10-14 06:40:00,843 INFO L226 Difference]: Without dead ends: 134 [2024-10-14 06:40:00,843 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-10-14 06:40:00,844 INFO L432 NwaCegarLoop]: 92 mSDtfsCounter, 59 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 414 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 06:40:00,844 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 414 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 06:40:00,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2024-10-14 06:40:00,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 97. [2024-10-14 06:40:00,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 96 states have (on average 1.3541666666666667) internal successors, (130), 96 states have internal predecessors, (130), 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) [2024-10-14 06:40:00,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 130 transitions. [2024-10-14 06:40:00,858 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 130 transitions. Word has length 36 [2024-10-14 06:40:00,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 06:40:00,859 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 130 transitions. [2024-10-14 06:40:00,859 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 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) [2024-10-14 06:40:00,859 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 130 transitions. [2024-10-14 06:40:00,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-10-14 06:40:00,860 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 06:40:00,860 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-14 06:40:00,860 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-14 06:40:00,861 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 06:40:00,861 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 06:40:00,861 INFO L85 PathProgramCache]: Analyzing trace with hash 772222476, now seen corresponding path program 1 times [2024-10-14 06:40:00,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 06:40:00,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581293436] [2024-10-14 06:40:00,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 06:40:00,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 06:40:00,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 06:40:01,434 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 06:40:01,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 06:40:01,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581293436] [2024-10-14 06:40:01,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581293436] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 06:40:01,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 06:40:01,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 06:40:01,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950759586] [2024-10-14 06:40:01,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 06:40:01,437 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 06:40:01,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 06:40:01,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 06:40:01,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-14 06:40:01,438 INFO L87 Difference]: Start difference. First operand 97 states and 130 transitions. Second operand has 6 states, 6 states have (on average 6.0) internal successors, (36), 5 states have internal predecessors, (36), 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) [2024-10-14 06:40:01,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 06:40:01,564 INFO L93 Difference]: Finished difference Result 171 states and 231 transitions. [2024-10-14 06:40:01,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 06:40:01,566 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 5 states have internal predecessors, (36), 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 36 [2024-10-14 06:40:01,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 06:40:01,566 INFO L225 Difference]: With dead ends: 171 [2024-10-14 06:40:01,567 INFO L226 Difference]: Without dead ends: 109 [2024-10-14 06:40:01,567 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-14 06:40:01,568 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 42 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 06:40:01,568 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 197 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 06:40:01,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2024-10-14 06:40:01,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 97. [2024-10-14 06:40:01,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 96 states have (on average 1.34375) internal successors, (129), 96 states have internal predecessors, (129), 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) [2024-10-14 06:40:01,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 129 transitions. [2024-10-14 06:40:01,574 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 129 transitions. Word has length 36 [2024-10-14 06:40:01,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 06:40:01,574 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 129 transitions. [2024-10-14 06:40:01,574 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 5 states have internal predecessors, (36), 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) [2024-10-14 06:40:01,575 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 129 transitions. [2024-10-14 06:40:01,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-10-14 06:40:01,576 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 06:40:01,576 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-14 06:40:01,576 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-14 06:40:01,576 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 06:40:01,576 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 06:40:01,577 INFO L85 PathProgramCache]: Analyzing trace with hash -2039446307, now seen corresponding path program 1 times [2024-10-14 06:40:01,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 06:40:01,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986765603] [2024-10-14 06:40:01,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 06:40:01,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 06:40:01,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 06:40:02,350 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 06:40:02,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 06:40:02,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986765603] [2024-10-14 06:40:02,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986765603] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 06:40:02,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 06:40:02,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-14 06:40:02,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705250214] [2024-10-14 06:40:02,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 06:40:02,352 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-14 06:40:02,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 06:40:02,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-14 06:40:02,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-10-14 06:40:02,354 INFO L87 Difference]: Start difference. First operand 97 states and 129 transitions. Second operand has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 8 states have internal predecessors, (37), 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) [2024-10-14 06:40:02,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 06:40:02,588 INFO L93 Difference]: Finished difference Result 193 states and 258 transitions. [2024-10-14 06:40:02,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-14 06:40:02,588 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 8 states have internal predecessors, (37), 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 37 [2024-10-14 06:40:02,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 06:40:02,589 INFO L225 Difference]: With dead ends: 193 [2024-10-14 06:40:02,589 INFO L226 Difference]: Without dead ends: 137 [2024-10-14 06:40:02,590 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-10-14 06:40:02,590 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 56 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-14 06:40:02,590 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 272 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-14 06:40:02,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2024-10-14 06:40:02,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 113. [2024-10-14 06:40:02,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 112 states have (on average 1.3303571428571428) internal successors, (149), 112 states have internal predecessors, (149), 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) [2024-10-14 06:40:02,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 149 transitions. [2024-10-14 06:40:02,596 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 149 transitions. Word has length 37 [2024-10-14 06:40:02,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 06:40:02,596 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 149 transitions. [2024-10-14 06:40:02,597 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 8 states have internal predecessors, (37), 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) [2024-10-14 06:40:02,597 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 149 transitions. [2024-10-14 06:40:02,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-10-14 06:40:02,598 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 06:40:02,598 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-14 06:40:02,598 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-14 06:40:02,598 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 06:40:02,599 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 06:40:02,599 INFO L85 PathProgramCache]: Analyzing trace with hash 565480164, now seen corresponding path program 1 times [2024-10-14 06:40:02,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 06:40:02,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521814161] [2024-10-14 06:40:02,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 06:40:02,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 06:40:02,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 06:40:03,151 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 06:40:03,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 06:40:03,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521814161] [2024-10-14 06:40:03,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521814161] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 06:40:03,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 06:40:03,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-14 06:40:03,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177966177] [2024-10-14 06:40:03,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 06:40:03,153 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-14 06:40:03,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 06:40:03,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-14 06:40:03,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-10-14 06:40:03,154 INFO L87 Difference]: Start difference. First operand 113 states and 149 transitions. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 8 states have internal predecessors, (38), 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) [2024-10-14 06:40:03,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 06:40:03,378 INFO L93 Difference]: Finished difference Result 194 states and 259 transitions. [2024-10-14 06:40:03,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-14 06:40:03,379 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 8 states have internal predecessors, (38), 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 38 [2024-10-14 06:40:03,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 06:40:03,380 INFO L225 Difference]: With dead ends: 194 [2024-10-14 06:40:03,380 INFO L226 Difference]: Without dead ends: 138 [2024-10-14 06:40:03,380 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-10-14 06:40:03,381 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 41 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 06:40:03,381 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 338 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 06:40:03,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2024-10-14 06:40:03,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 119. [2024-10-14 06:40:03,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 118 states have (on average 1.3135593220338984) internal successors, (155), 118 states have internal predecessors, (155), 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) [2024-10-14 06:40:03,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 155 transitions. [2024-10-14 06:40:03,394 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 155 transitions. Word has length 38 [2024-10-14 06:40:03,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 06:40:03,394 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 155 transitions. [2024-10-14 06:40:03,395 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 8 states have internal predecessors, (38), 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) [2024-10-14 06:40:03,395 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 155 transitions. [2024-10-14 06:40:03,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-10-14 06:40:03,395 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 06:40:03,396 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-14 06:40:03,396 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-14 06:40:03,396 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 06:40:03,396 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 06:40:03,396 INFO L85 PathProgramCache]: Analyzing trace with hash 152213224, now seen corresponding path program 1 times [2024-10-14 06:40:03,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 06:40:03,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507055495] [2024-10-14 06:40:03,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 06:40:03,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 06:40:03,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 06:40:04,112 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 06:40:04,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 06:40:04,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507055495] [2024-10-14 06:40:04,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507055495] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 06:40:04,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 06:40:04,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-14 06:40:04,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982872214] [2024-10-14 06:40:04,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 06:40:04,114 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-14 06:40:04,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 06:40:04,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-14 06:40:04,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-10-14 06:40:04,115 INFO L87 Difference]: Start difference. First operand 119 states and 155 transitions. Second operand has 8 states, 8 states have (on average 4.75) internal successors, (38), 7 states have internal predecessors, (38), 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) [2024-10-14 06:40:04,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 06:40:04,321 INFO L93 Difference]: Finished difference Result 203 states and 269 transitions. [2024-10-14 06:40:04,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-14 06:40:04,322 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 7 states have internal predecessors, (38), 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 38 [2024-10-14 06:40:04,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 06:40:04,323 INFO L225 Difference]: With dead ends: 203 [2024-10-14 06:40:04,323 INFO L226 Difference]: Without dead ends: 147 [2024-10-14 06:40:04,323 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-10-14 06:40:04,324 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 46 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-14 06:40:04,324 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 185 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-14 06:40:04,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2024-10-14 06:40:04,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 127. [2024-10-14 06:40:04,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 126 states have (on average 1.3095238095238095) internal successors, (165), 126 states have internal predecessors, (165), 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) [2024-10-14 06:40:04,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 165 transitions. [2024-10-14 06:40:04,329 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 165 transitions. Word has length 38 [2024-10-14 06:40:04,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 06:40:04,330 INFO L471 AbstractCegarLoop]: Abstraction has 127 states and 165 transitions. [2024-10-14 06:40:04,330 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 7 states have internal predecessors, (38), 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) [2024-10-14 06:40:04,330 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 165 transitions. [2024-10-14 06:40:04,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-10-14 06:40:04,331 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 06:40:04,331 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-14 06:40:04,331 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-14 06:40:04,331 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 06:40:04,331 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 06:40:04,332 INFO L85 PathProgramCache]: Analyzing trace with hash 224242285, now seen corresponding path program 1 times [2024-10-14 06:40:04,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 06:40:04,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434424908] [2024-10-14 06:40:04,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 06:40:04,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 06:40:04,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 06:40:04,589 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 06:40:04,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 06:40:04,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434424908] [2024-10-14 06:40:04,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434424908] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 06:40:04,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 06:40:04,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 06:40:04,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308569061] [2024-10-14 06:40:04,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 06:40:04,591 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 06:40:04,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 06:40:04,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 06:40:04,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-14 06:40:04,592 INFO L87 Difference]: Start difference. First operand 127 states and 165 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 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) [2024-10-14 06:40:04,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 06:40:04,637 INFO L93 Difference]: Finished difference Result 219 states and 286 transitions. [2024-10-14 06:40:04,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 06:40:04,638 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 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 38 [2024-10-14 06:40:04,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 06:40:04,639 INFO L225 Difference]: With dead ends: 219 [2024-10-14 06:40:04,639 INFO L226 Difference]: Without dead ends: 111 [2024-10-14 06:40:04,639 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-14 06:40:04,640 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 30 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 06:40:04,640 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 217 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 06:40:04,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2024-10-14 06:40:04,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 107. [2024-10-14 06:40:04,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 106 states have (on average 1.320754716981132) internal successors, (140), 106 states have internal predecessors, (140), 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) [2024-10-14 06:40:04,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 140 transitions. [2024-10-14 06:40:04,644 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 140 transitions. Word has length 38 [2024-10-14 06:40:04,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 06:40:04,644 INFO L471 AbstractCegarLoop]: Abstraction has 107 states and 140 transitions. [2024-10-14 06:40:04,644 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 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) [2024-10-14 06:40:04,645 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 140 transitions. [2024-10-14 06:40:04,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-10-14 06:40:04,645 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 06:40:04,645 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-14 06:40:04,646 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-14 06:40:04,646 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 06:40:04,646 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 06:40:04,646 INFO L85 PathProgramCache]: Analyzing trace with hash -1721704832, now seen corresponding path program 1 times [2024-10-14 06:40:04,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 06:40:04,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232331272] [2024-10-14 06:40:04,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 06:40:04,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 06:40:04,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 06:40:04,745 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-14 06:40:04,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 06:40:04,840 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-14 06:40:04,841 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-14 06:40:04,842 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-14 06:40:04,844 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-14 06:40:04,847 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 06:40:04,894 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-14 06:40:04,899 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 06:40:04 BoogieIcfgContainer [2024-10-14 06:40:04,900 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-14 06:40:04,900 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-14 06:40:04,900 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-14 06:40:04,901 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-14 06:40:04,901 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 06:39:55" (3/4) ... [2024-10-14 06:40:04,903 INFO L142 WitnessPrinter]: No result that supports witness generation found [2024-10-14 06:40:04,904 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-14 06:40:04,904 INFO L158 Benchmark]: Toolchain (without parser) took 10309.28ms. Allocated memory was 218.1MB in the beginning and 423.6MB in the end (delta: 205.5MB). Free memory was 150.0MB in the beginning and 346.7MB in the end (delta: -196.7MB). Peak memory consumption was 11.5MB. Max. memory is 16.1GB. [2024-10-14 06:40:04,905 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 109.1MB. Free memory is still 71.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-14 06:40:04,905 INFO L158 Benchmark]: CACSL2BoogieTranslator took 321.07ms. Allocated memory is still 218.1MB. Free memory was 149.8MB in the beginning and 136.0MB in the end (delta: 13.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-10-14 06:40:04,905 INFO L158 Benchmark]: Boogie Procedure Inliner took 112.72ms. Allocated memory is still 218.1MB. Free memory was 136.0MB in the beginning and 189.9MB in the end (delta: -53.9MB). Peak memory consumption was 10.0MB. Max. memory is 16.1GB. [2024-10-14 06:40:04,905 INFO L158 Benchmark]: Boogie Preprocessor took 157.17ms. Allocated memory is still 218.1MB. Free memory was 189.0MB in the beginning and 186.0MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-14 06:40:04,906 INFO L158 Benchmark]: RCFGBuilder took 628.11ms. Allocated memory is still 218.1MB. Free memory was 186.0MB in the beginning and 155.5MB in the end (delta: 30.6MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2024-10-14 06:40:04,906 INFO L158 Benchmark]: TraceAbstraction took 9080.39ms. Allocated memory was 218.1MB in the beginning and 423.6MB in the end (delta: 205.5MB). Free memory was 154.6MB in the beginning and 346.7MB in the end (delta: -192.2MB). Peak memory consumption was 16.2MB. Max. memory is 16.1GB. [2024-10-14 06:40:04,906 INFO L158 Benchmark]: Witness Printer took 3.76ms. Allocated memory is still 423.6MB. Free memory is still 346.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-14 06:40:04,908 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 109.1MB. Free memory is still 71.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 321.07ms. Allocated memory is still 218.1MB. Free memory was 149.8MB in the beginning and 136.0MB in the end (delta: 13.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 112.72ms. Allocated memory is still 218.1MB. Free memory was 136.0MB in the beginning and 189.9MB in the end (delta: -53.9MB). Peak memory consumption was 10.0MB. Max. memory is 16.1GB. * Boogie Preprocessor took 157.17ms. Allocated memory is still 218.1MB. Free memory was 189.0MB in the beginning and 186.0MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 628.11ms. Allocated memory is still 218.1MB. Free memory was 186.0MB in the beginning and 155.5MB in the end (delta: 30.6MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * TraceAbstraction took 9080.39ms. Allocated memory was 218.1MB in the beginning and 423.6MB in the end (delta: 205.5MB). Free memory was 154.6MB in the beginning and 346.7MB in the end (delta: -192.2MB). Peak memory consumption was 16.2MB. Max. memory is 16.1GB. * Witness Printer took 3.76ms. Allocated memory is still 423.6MB. Free memory is still 346.7MB. There was no memory consumed. 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 - UnprovableResult [Line: 21]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of bitwiseAnd at line 115. Possible FailurePath: [L26] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L27] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L29] const SORT_3 mask_SORT_3 = (SORT_3)-1 >> (sizeof(SORT_3) * 8 - 8); [L30] const SORT_3 msb_SORT_3 = (SORT_3)1 << (8 - 1); [L32] const SORT_3 var_4 = 0; [L33] const SORT_1 var_13 = 1; [L34] const SORT_3 var_19 = 255; [L35] const SORT_3 var_23 = 1; [L37] SORT_1 input_2; [L39] EXPR __VERIFIER_nondet_uchar() & mask_SORT_3 VAL [mask_SORT_1=1, mask_SORT_3=255, var_13=1, var_19=255, var_23=1, var_4=0] [L39] SORT_3 state_5 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L40] EXPR __VERIFIER_nondet_uchar() & mask_SORT_3 VAL [mask_SORT_1=1, mask_SORT_3=255, var_13=1, var_19=255, var_23=1, var_4=0] [L40] SORT_3 state_7 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L42] SORT_3 init_6_arg_1 = var_4; [L43] state_5 = init_6_arg_1 [L44] SORT_3 init_8_arg_1 = var_4; [L45] state_7 = init_8_arg_1 VAL [mask_SORT_1=1, mask_SORT_3=255, state_5=0, state_7=0, var_13=1, var_19=255, var_23=1] [L48] input_2 = __VERIFIER_nondet_uchar() [L51] SORT_3 var_9_arg_0 = state_5; [L52] SORT_3 var_9_arg_1 = state_7; [L53] SORT_1 var_9 = var_9_arg_0 > var_9_arg_1; [L54] SORT_1 var_10_arg_0 = var_9; [L55] SORT_1 var_10 = ~var_10_arg_0; [L56] SORT_1 var_14_arg_0 = var_10; [L57] SORT_1 var_14 = ~var_14_arg_0; [L58] SORT_1 var_15_arg_0 = var_13; [L59] SORT_1 var_15_arg_1 = var_14; VAL [mask_SORT_1=1, mask_SORT_3=255, state_5=0, state_7=0, var_13=1, var_15_arg_0=1, var_15_arg_1=-256, var_19=255, var_23=1] [L60] EXPR var_15_arg_0 & var_15_arg_1 VAL [mask_SORT_1=1, mask_SORT_3=255, state_5=0, state_7=0, var_13=1, var_19=255, var_23=1] [L60] SORT_1 var_15 = var_15_arg_0 & var_15_arg_1; [L61] EXPR var_15 & mask_SORT_1 VAL [mask_SORT_1=1, mask_SORT_3=255, state_5=0, state_7=0, var_13=1, var_19=255, var_23=1] [L61] var_15 = var_15 & mask_SORT_1 [L62] SORT_1 bad_16_arg_0 = var_15; [L63] CALL __VERIFIER_assert(!(bad_16_arg_0)) [L21] COND FALSE !(!(cond)) [L63] RET __VERIFIER_assert(!(bad_16_arg_0)) [L65] SORT_3 var_25_arg_0 = state_5; [L66] SORT_3 var_25_arg_1 = state_7; [L67] SORT_1 var_25 = var_25_arg_0 == var_25_arg_1; [L68] SORT_3 var_24_arg_0 = state_5; [L69] SORT_3 var_24_arg_1 = var_23; [L70] SORT_3 var_24 = var_24_arg_0 + var_24_arg_1; [L71] SORT_3 var_18_arg_0 = state_5; [L72] SORT_3 var_18_arg_1 = state_7; [L73] SORT_1 var_18 = var_18_arg_0 > var_18_arg_1; [L74] SORT_3 var_20_arg_0 = state_7; [L75] SORT_3 var_20_arg_1 = var_19; [L76] SORT_1 var_20 = var_20_arg_0 != var_20_arg_1; [L77] SORT_1 var_21_arg_0 = var_18; [L78] SORT_1 var_21_arg_1 = var_20; VAL [mask_SORT_1=1, mask_SORT_3=255, state_5=0, state_7=0, var_13=1, var_19=255, var_21_arg_0=0, var_21_arg_1=1, var_23=1, var_24=1, var_25=1] [L79] EXPR var_21_arg_0 | var_21_arg_1 VAL [mask_SORT_1=1, mask_SORT_3=255, state_5=0, state_7=0, var_13=1, var_19=255, var_23=1, var_24=1, var_25=1] [L79] SORT_1 var_21 = var_21_arg_0 | var_21_arg_1; [L80] EXPR var_21 & mask_SORT_1 VAL [mask_SORT_1=1, mask_SORT_3=255, state_5=0, state_7=0, var_13=1, var_19=255, var_23=1, var_24=1, var_25=1] [L80] var_21 = var_21 & mask_SORT_1 [L81] SORT_1 var_22_arg_0 = var_21; [L82] SORT_3 var_22_arg_1 = state_5; [L83] SORT_3 var_22_arg_2 = state_7; [L84] SORT_3 var_22 = var_22_arg_0 ? var_22_arg_1 : var_22_arg_2; [L85] SORT_1 var_26_arg_0 = var_25; [L86] SORT_3 var_26_arg_1 = var_24; [L87] SORT_3 var_26_arg_2 = var_22; [L88] SORT_3 var_26 = var_26_arg_0 ? var_26_arg_1 : var_26_arg_2; VAL [mask_SORT_1=1, mask_SORT_3=255, state_5=0, state_7=0, var_13=1, var_19=255, var_23=1, var_26=1] [L89] EXPR var_26 & mask_SORT_3 VAL [mask_SORT_1=1, mask_SORT_3=255, state_5=0, state_7=0, var_13=1, var_19=255, var_23=1] [L89] var_26 = var_26 & mask_SORT_3 [L90] SORT_3 next_27_arg_1 = var_26; [L91] SORT_3 var_33_arg_0 = state_5; [L92] SORT_3 var_33_arg_1 = state_7; [L93] SORT_1 var_33 = var_33_arg_0 > var_33_arg_1; [L94] SORT_3 var_29_arg_0 = state_5; [L95] SORT_3 var_29_arg_1 = state_7; [L96] SORT_1 var_29 = var_29_arg_0 == var_29_arg_1; [L97] SORT_3 var_30_arg_0 = state_7; [L98] SORT_3 var_30_arg_1 = var_19; [L99] SORT_1 var_30 = var_30_arg_0 != var_30_arg_1; [L100] SORT_1 var_31_arg_0 = var_29; [L101] SORT_1 var_31_arg_1 = var_30; VAL [mask_SORT_1=1, mask_SORT_3=255, next_27_arg_1=1, state_5=0, state_7=0, var_13=1, var_19=255, var_23=1, var_31_arg_0=1, var_31_arg_1=1, var_33=0] [L102] EXPR var_31_arg_0 | var_31_arg_1 VAL [mask_SORT_1=1, mask_SORT_3=255, next_27_arg_1=1, state_5=0, state_7=0, var_13=1, var_19=255, var_23=1, var_33=0] [L102] SORT_1 var_31 = var_31_arg_0 | var_31_arg_1; [L103] EXPR var_31 & mask_SORT_1 VAL [mask_SORT_1=1, mask_SORT_3=255, next_27_arg_1=1, state_5=0, state_7=0, var_13=1, var_19=255, var_23=1, var_33=0] [L103] var_31 = var_31 & mask_SORT_1 [L104] SORT_3 var_28_arg_0 = state_7; [L105] SORT_3 var_28_arg_1 = var_23; [L106] SORT_3 var_28 = var_28_arg_0 + var_28_arg_1; [L107] SORT_1 var_32_arg_0 = var_31; [L108] SORT_3 var_32_arg_1 = var_28; [L109] SORT_3 var_32_arg_2 = state_5; [L110] SORT_3 var_32 = var_32_arg_0 ? var_32_arg_1 : var_32_arg_2; [L111] SORT_1 var_34_arg_0 = var_33; [L112] SORT_3 var_34_arg_1 = state_7; [L113] SORT_3 var_34_arg_2 = var_32; [L114] SORT_3 var_34 = var_34_arg_0 ? var_34_arg_1 : var_34_arg_2; VAL [mask_SORT_1=1, mask_SORT_3=255, next_27_arg_1=1, var_13=1, var_19=255, var_23=1, var_34=1] [L115] EXPR var_34 & mask_SORT_3 VAL [mask_SORT_1=1, mask_SORT_3=255, next_27_arg_1=1, var_13=1, var_19=255, var_23=1] [L115] var_34 = var_34 & mask_SORT_3 [L116] SORT_3 next_35_arg_1 = var_34; [L118] state_5 = next_27_arg_1 [L119] state_7 = next_35_arg_1 [L48] input_2 = __VERIFIER_nondet_uchar() [L51] SORT_3 var_9_arg_0 = state_5; [L52] SORT_3 var_9_arg_1 = state_7; [L53] SORT_1 var_9 = var_9_arg_0 > var_9_arg_1; [L54] SORT_1 var_10_arg_0 = var_9; [L55] SORT_1 var_10 = ~var_10_arg_0; [L56] SORT_1 var_14_arg_0 = var_10; [L57] SORT_1 var_14 = ~var_14_arg_0; [L58] SORT_1 var_15_arg_0 = var_13; [L59] SORT_1 var_15_arg_1 = var_14; VAL [mask_SORT_1=1, mask_SORT_3=255, state_5=1, state_7=0, var_13=1, var_15_arg_0=1, var_15_arg_1=-255, var_19=255, var_23=1] [L60] EXPR var_15_arg_0 & var_15_arg_1 VAL [mask_SORT_1=1, mask_SORT_3=255, state_5=1, state_7=0, var_13=1, var_19=255, var_23=1] [L60] SORT_1 var_15 = var_15_arg_0 & var_15_arg_1; [L61] EXPR var_15 & mask_SORT_1 VAL [mask_SORT_1=1, mask_SORT_3=255, state_5=1, state_7=0, var_13=1, var_19=255, var_23=1] [L61] var_15 = var_15 & mask_SORT_1 [L62] SORT_1 bad_16_arg_0 = var_15; [L63] CALL __VERIFIER_assert(!(bad_16_arg_0)) [L21] COND TRUE !(cond) [L21] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 47 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 9.0s, OverallIterations: 13, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 517 SdHoareTripleChecker+Valid, 1.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 517 mSDsluCounter, 3303 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2596 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1272 IncrementalHoareTripleChecker+Invalid, 1281 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 707 mSDtfsCounter, 1272 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 137 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=127occurred in iteration=11, InterpolantAutomatonStates: 83, 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, 12 MinimizatonAttempts, 198 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 5.3s InterpolantComputationTime, 436 NumberOfCodeBlocks, 436 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 384 ConstructedInterpolants, 0 QuantifiedInterpolants, 2414 SizeOfPredicates, 3 NumberOfNonLiveVariables, 249 ConjunctsInSsa, 39 ConjunctsInUnsatCore, 13 InterpolantComputations, 12 PerfectInterpolantSequences, 56/60 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-10-14 06:40:04,941 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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.paper_v3.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.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 1a93b4c325da61bdb0bcf5f7bfce47877e5238073f7401e4883b579f193ca117 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 06:40:07,573 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 06:40:07,637 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2024-10-14 06:40:07,641 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 06:40:07,642 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 06:40:07,663 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 06:40:07,665 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 06:40:07,666 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 06:40:07,667 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 06:40:07,668 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 06:40:07,668 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 06:40:07,669 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 06:40:07,669 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 06:40:07,670 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 06:40:07,670 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 06:40:07,672 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 06:40:07,672 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-14 06:40:07,672 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 06:40:07,673 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-14 06:40:07,673 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 06:40:07,673 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-14 06:40:07,674 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-14 06:40:07,674 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-10-14 06:40:07,675 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 06:40:07,678 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-10-14 06:40:07,679 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-14 06:40:07,679 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 06:40:07,679 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 06:40:07,679 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 06:40:07,680 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 06:40:07,680 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 06:40:07,680 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 06:40:07,681 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 06:40:07,681 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 06:40:07,682 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-14 06:40:07,682 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-10-14 06:40:07,683 INFO L153 SettingsManager]: * Command for external solver=cvc5 --incremental --print-success --lang smt [2024-10-14 06:40:07,683 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 06:40:07,692 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 06:40:07,693 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 06:40:07,693 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 06:40:07,695 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-10-14 06:40:07,695 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1a93b4c325da61bdb0bcf5f7bfce47877e5238073f7401e4883b579f193ca117 [2024-10-14 06:40:08,052 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 06:40:08,083 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 06:40:08,086 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 06:40:08,088 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 06:40:08,088 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 06:40:08,090 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.paper_v3.c [2024-10-14 06:40:09,920 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 06:40:10,143 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 06:40:10,143 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.paper_v3.c [2024-10-14 06:40:10,154 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44f223ffb/3c22a0e23e3142c4aa7ec4f8d754629c/FLAG6472614cd [2024-10-14 06:40:10,169 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44f223ffb/3c22a0e23e3142c4aa7ec4f8d754629c [2024-10-14 06:40:10,172 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 06:40:10,173 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 06:40:10,174 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 06:40:10,174 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 06:40:10,207 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 06:40:10,208 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 06:40:10" (1/1) ... [2024-10-14 06:40:10,209 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c60afed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:40:10, skipping insertion in model container [2024-10-14 06:40:10,209 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 06:40:10" (1/1) ... [2024-10-14 06:40:10,261 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 06:40:10,596 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.paper_v3.c[1248,1261] [2024-10-14 06:40:10,687 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 06:40:10,706 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 06:40:10,721 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.paper_v3.c[1248,1261] [2024-10-14 06:40:10,756 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 06:40:10,783 INFO L204 MainTranslator]: Completed translation [2024-10-14 06:40:10,783 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:40:10 WrapperNode [2024-10-14 06:40:10,784 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 06:40:10,785 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 06:40:10,785 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 06:40:10,785 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 06:40:10,792 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:40:10" (1/1) ... [2024-10-14 06:40:10,804 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:40:10" (1/1) ... [2024-10-14 06:40:10,840 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 108 [2024-10-14 06:40:10,840 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 06:40:10,841 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 06:40:10,841 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 06:40:10,841 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 06:40:10,852 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:40:10" (1/1) ... [2024-10-14 06:40:10,852 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:40:10" (1/1) ... [2024-10-14 06:40:10,855 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:40:10" (1/1) ... [2024-10-14 06:40:10,871 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]. [2024-10-14 06:40:10,871 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:40:10" (1/1) ... [2024-10-14 06:40:10,871 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:40:10" (1/1) ... [2024-10-14 06:40:10,876 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:40:10" (1/1) ... [2024-10-14 06:40:10,879 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:40:10" (1/1) ... [2024-10-14 06:40:10,880 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:40:10" (1/1) ... [2024-10-14 06:40:10,881 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:40:10" (1/1) ... [2024-10-14 06:40:10,884 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 06:40:10,885 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 06:40:10,885 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 06:40:10,885 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 06:40:10,886 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:40:10" (1/1) ... [2024-10-14 06:40:10,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 06:40:10,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 06:40:10,927 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) [2024-10-14 06:40:10,931 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 [2024-10-14 06:40:10,975 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 06:40:10,975 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-10-14 06:40:10,976 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 06:40:10,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 06:40:11,055 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 06:40:11,057 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 06:40:11,312 INFO L? ?]: Removed 21 outVars from TransFormulas that were not future-live. [2024-10-14 06:40:11,312 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 06:40:11,365 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 06:40:11,368 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-14 06:40:11,368 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 06:40:11 BoogieIcfgContainer [2024-10-14 06:40:11,368 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 06:40:11,370 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 06:40:11,370 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 06:40:11,375 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 06:40:11,375 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 06:40:10" (1/3) ... [2024-10-14 06:40:11,376 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74e56c56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 06:40:11, skipping insertion in model container [2024-10-14 06:40:11,377 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:40:10" (2/3) ... [2024-10-14 06:40:11,378 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74e56c56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 06:40:11, skipping insertion in model container [2024-10-14 06:40:11,378 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 06:40:11" (3/3) ... [2024-10-14 06:40:11,380 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.paper_v3.c [2024-10-14 06:40:11,399 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 06:40:11,399 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-14 06:40:11,461 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 06:40:11,469 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;@57edb54b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 06:40:11,470 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-14 06:40:11,474 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 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) [2024-10-14 06:40:11,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-10-14 06:40:11,481 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 06:40:11,483 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-10-14 06:40:11,484 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 06:40:11,490 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 06:40:11,492 INFO L85 PathProgramCache]: Analyzing trace with hash 1614770, now seen corresponding path program 1 times [2024-10-14 06:40:11,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 06:40:11,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1756515986] [2024-10-14 06:40:11,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 06:40:11,506 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 06:40:11,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 06:40:11,510 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 06:40:11,511 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-10-14 06:40:11,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 06:40:11,608 INFO L255 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-14 06:40:11,621 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 06:40:11,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 06:40:11,849 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 06:40:11,849 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 06:40:11,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1756515986] [2024-10-14 06:40:11,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1756515986] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 06:40:11,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 06:40:11,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 06:40:11,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543303382] [2024-10-14 06:40:11,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 06:40:11,859 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 06:40:11,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 06:40:11,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 06:40:11,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 06:40:11,888 INFO L87 Difference]: Start difference. First operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 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 1.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2024-10-14 06:40:11,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 06:40:11,938 INFO L93 Difference]: Finished difference Result 15 states and 20 transitions. [2024-10-14 06:40:11,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 06:40:11,941 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 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 4 [2024-10-14 06:40:11,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 06:40:11,948 INFO L225 Difference]: With dead ends: 15 [2024-10-14 06:40:11,948 INFO L226 Difference]: Without dead ends: 9 [2024-10-14 06:40:11,951 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-14 06:40:11,954 INFO L432 NwaCegarLoop]: 2 mSDtfsCounter, 2 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 06:40:11,954 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 6 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 06:40:11,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2024-10-14 06:40:11,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2024-10-14 06:40:11,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 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) [2024-10-14 06:40:11,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2024-10-14 06:40:11,981 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 4 [2024-10-14 06:40:11,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 06:40:11,982 INFO L471 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2024-10-14 06:40:11,982 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2024-10-14 06:40:11,982 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2024-10-14 06:40:11,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-10-14 06:40:11,982 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 06:40:11,983 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2024-10-14 06:40:12,005 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2024-10-14 06:40:12,186 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 06:40:12,187 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 06:40:12,188 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 06:40:12,188 INFO L85 PathProgramCache]: Analyzing trace with hash 865745430, now seen corresponding path program 1 times [2024-10-14 06:40:12,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 06:40:12,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [227508552] [2024-10-14 06:40:12,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 06:40:12,189 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 06:40:12,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 06:40:12,194 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 06:40:12,200 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-10-14 06:40:12,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 06:40:12,274 INFO L255 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-14 06:40:12,279 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 06:40:12,513 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 06:40:12,513 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 06:40:14,105 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 06:40:14,105 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 06:40:14,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [227508552] [2024-10-14 06:40:14,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [227508552] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 06:40:14,109 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 06:40:14,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2024-10-14 06:40:14,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838851905] [2024-10-14 06:40:14,110 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 06:40:14,111 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-14 06:40:14,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 06:40:14,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-14 06:40:14,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-10-14 06:40:14,115 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 8 states, 8 states have (on average 1.625) internal successors, (13), 7 states have internal predecessors, (13), 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) [2024-10-14 06:40:14,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 06:40:14,505 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2024-10-14 06:40:14,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-14 06:40:14,506 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.625) internal successors, (13), 7 states have internal predecessors, (13), 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 7 [2024-10-14 06:40:14,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 06:40:14,506 INFO L225 Difference]: With dead ends: 20 [2024-10-14 06:40:14,506 INFO L226 Difference]: Without dead ends: 18 [2024-10-14 06:40:14,507 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2024-10-14 06:40:14,508 INFO L432 NwaCegarLoop]: 2 mSDtfsCounter, 8 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 06:40:14,508 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 11 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 06:40:14,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2024-10-14 06:40:14,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2024-10-14 06:40:14,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.0625) internal successors, (17), 16 states have internal predecessors, (17), 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) [2024-10-14 06:40:14,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2024-10-14 06:40:14,520 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 7 [2024-10-14 06:40:14,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 06:40:14,521 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2024-10-14 06:40:14,521 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.625) internal successors, (13), 7 states have internal predecessors, (13), 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) [2024-10-14 06:40:14,521 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2024-10-14 06:40:14,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-10-14 06:40:14,525 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 06:40:14,526 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1] [2024-10-14 06:40:14,531 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2024-10-14 06:40:14,726 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 06:40:14,727 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 06:40:14,728 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 06:40:14,728 INFO L85 PathProgramCache]: Analyzing trace with hash 181792434, now seen corresponding path program 2 times [2024-10-14 06:40:14,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 06:40:14,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1238798861] [2024-10-14 06:40:14,730 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 06:40:14,730 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 06:40:14,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 06:40:14,733 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 06:40:14,734 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-10-14 06:40:14,839 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 06:40:14,840 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 06:40:14,843 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-10-14 06:40:14,848 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 06:40:15,255 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 06:40:15,255 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 06:40:26,140 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 06:40:26,142 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 06:40:26,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1238798861] [2024-10-14 06:40:26,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1238798861] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 06:40:26,142 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 06:40:26,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2024-10-14 06:40:26,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074924271] [2024-10-14 06:40:26,143 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 06:40:26,144 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-14 06:40:26,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 06:40:26,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-14 06:40:26,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2024-10-14 06:40:26,145 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 13 states have internal predecessors, (31), 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) [2024-10-14 06:40:27,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 06:40:27,662 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2024-10-14 06:40:27,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-14 06:40:27,663 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 13 states have internal predecessors, (31), 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 16 [2024-10-14 06:40:27,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 06:40:27,663 INFO L225 Difference]: With dead ends: 38 [2024-10-14 06:40:27,663 INFO L226 Difference]: Without dead ends: 36 [2024-10-14 06:40:27,664 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=255, Invalid=501, Unknown=0, NotChecked=0, Total=756 [2024-10-14 06:40:27,665 INFO L432 NwaCegarLoop]: 2 mSDtfsCounter, 12 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-14 06:40:27,665 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 13 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-14 06:40:27,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-10-14 06:40:27,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2024-10-14 06:40:27,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.0294117647058822) internal successors, (35), 34 states have internal predecessors, (35), 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) [2024-10-14 06:40:27,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2024-10-14 06:40:27,673 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 16 [2024-10-14 06:40:27,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 06:40:27,673 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2024-10-14 06:40:27,673 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 13 states have internal predecessors, (31), 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) [2024-10-14 06:40:27,673 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2024-10-14 06:40:27,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-10-14 06:40:27,674 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 06:40:27,674 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 1, 1, 1] [2024-10-14 06:40:27,678 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2024-10-14 06:40:27,874 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 06:40:27,875 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 06:40:27,879 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 06:40:27,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1699737394, now seen corresponding path program 3 times [2024-10-14 06:40:27,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 06:40:27,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1604764691] [2024-10-14 06:40:27,883 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-14 06:40:27,884 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 06:40:27,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 06:40:27,885 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 06:40:27,886 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2024-10-14 06:40:28,100 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-10-14 06:40:28,101 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 06:40:28,105 INFO L255 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-10-14 06:40:28,118 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 06:40:28,895 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 06:40:28,895 INFO L311 TraceCheckSpWp]: Computing backward predicates...