./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 39b9505d3a064a677b57bccb6de3a4c04e873275d34ee3c16e80371638b07149 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 00:22:18,795 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 00:22:18,886 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-24 00:22:18,891 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 00:22:18,891 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 00:22:18,925 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 00:22:18,926 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 00:22:18,927 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 00:22:18,928 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 00:22:18,928 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 00:22:18,928 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 00:22:18,928 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 00:22:18,929 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 00:22:18,929 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 00:22:18,929 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 00:22:18,930 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 00:22:18,930 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 00:22:18,933 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 00:22:18,934 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 00:22:18,934 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 00:22:18,934 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 00:22:18,938 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 00:22:18,938 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 00:22:18,939 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 00:22:18,939 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 00:22:18,939 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 00:22:18,939 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 00:22:18,939 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 00:22:18,940 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 00:22:18,940 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 00:22:18,940 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 00:22:18,940 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 00:22:18,940 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 00:22:18,941 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 00:22:18,941 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 00:22:18,941 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 00:22:18,942 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 00:22:18,942 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 00:22:18,942 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 00:22:18,942 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 00:22:18,943 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 00:22:18,944 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 00:22:18,944 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 39b9505d3a064a677b57bccb6de3a4c04e873275d34ee3c16e80371638b07149 [2024-10-24 00:22:19,207 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 00:22:19,239 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 00:22:19,242 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 00:22:19,243 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 00:22:19,244 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 00:22:19,245 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound2.c [2024-10-24 00:22:20,739 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 00:22:20,916 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 00:22:20,917 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound2.c [2024-10-24 00:22:20,924 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e812ebe4/069f429ee22b4abd9ea69dd32ff312fc/FLAGa8cd3d33c [2024-10-24 00:22:20,937 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e812ebe4/069f429ee22b4abd9ea69dd32ff312fc [2024-10-24 00:22:20,939 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 00:22:20,940 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 00:22:20,945 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 00:22:20,945 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 00:22:20,952 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 00:22:20,953 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:22:20" (1/1) ... [2024-10-24 00:22:20,956 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@abdc511 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:22:20, skipping insertion in model container [2024-10-24 00:22:20,956 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:22:20" (1/1) ... [2024-10-24 00:22:20,974 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 00:22:21,158 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/nla-digbench-scaling/hard2_valuebound2.c[526,539] [2024-10-24 00:22:21,182 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 00:22:21,198 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 00:22:21,212 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/nla-digbench-scaling/hard2_valuebound2.c[526,539] [2024-10-24 00:22:21,219 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 00:22:21,242 INFO L204 MainTranslator]: Completed translation [2024-10-24 00:22:21,243 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:22:21 WrapperNode [2024-10-24 00:22:21,243 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 00:22:21,244 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 00:22:21,245 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 00:22:21,245 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 00:22:21,252 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:22:21" (1/1) ... [2024-10-24 00:22:21,259 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:22:21" (1/1) ... [2024-10-24 00:22:21,280 INFO L138 Inliner]: procedures = 14, calls = 23, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 64 [2024-10-24 00:22:21,282 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 00:22:21,283 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 00:22:21,283 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 00:22:21,283 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 00:22:21,294 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:22:21" (1/1) ... [2024-10-24 00:22:21,295 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:22:21" (1/1) ... [2024-10-24 00:22:21,296 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:22:21" (1/1) ... [2024-10-24 00:22:21,313 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 8]. The 0 writes are split as follows [0, 0]. [2024-10-24 00:22:21,313 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:22:21" (1/1) ... [2024-10-24 00:22:21,313 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:22:21" (1/1) ... [2024-10-24 00:22:21,316 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:22:21" (1/1) ... [2024-10-24 00:22:21,320 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:22:21" (1/1) ... [2024-10-24 00:22:21,321 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:22:21" (1/1) ... [2024-10-24 00:22:21,322 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:22:21" (1/1) ... [2024-10-24 00:22:21,325 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 00:22:21,330 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 00:22:21,331 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 00:22:21,331 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 00:22:21,332 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:22:21" (1/1) ... [2024-10-24 00:22:21,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 00:22:21,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 00:22:21,367 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-24 00:22:21,374 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-24 00:22:21,419 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 00:22:21,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 00:22:21,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-24 00:22:21,420 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 00:22:21,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 00:22:21,420 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-10-24 00:22:21,420 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-10-24 00:22:21,494 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 00:22:21,497 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 00:22:21,656 INFO L? ?]: Removed 7 outVars from TransFormulas that were not future-live. [2024-10-24 00:22:21,656 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 00:22:21,679 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 00:22:21,680 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-24 00:22:21,680 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:22:21 BoogieIcfgContainer [2024-10-24 00:22:21,680 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 00:22:21,682 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 00:22:21,683 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 00:22:21,687 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 00:22:21,688 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 12:22:20" (1/3) ... [2024-10-24 00:22:21,689 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a0bf71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:22:21, skipping insertion in model container [2024-10-24 00:22:21,689 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:22:21" (2/3) ... [2024-10-24 00:22:21,690 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a0bf71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:22:21, skipping insertion in model container [2024-10-24 00:22:21,690 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:22:21" (3/3) ... [2024-10-24 00:22:21,691 INFO L112 eAbstractionObserver]: Analyzing ICFG hard2_valuebound2.c [2024-10-24 00:22:21,705 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 00:22:21,705 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-24 00:22:21,760 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 00:22:21,768 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;@366e313d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 00:22:21,768 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-24 00:22:21,773 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 14 states have internal predecessors, (23), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-10-24 00:22:21,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-10-24 00:22:21,779 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 00:22:21,779 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 00:22:21,780 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 00:22:21,785 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 00:22:21,786 INFO L85 PathProgramCache]: Analyzing trace with hash -1830609328, now seen corresponding path program 1 times [2024-10-24 00:22:21,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 00:22:21,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201789983] [2024-10-24 00:22:21,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:22:21,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 00:22:21,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:22:21,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 00:22:21,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 00:22:21,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201789983] [2024-10-24 00:22:21,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201789983] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 00:22:21,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 00:22:21,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 00:22:21,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529968169] [2024-10-24 00:22:21,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 00:22:21,961 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-24 00:22:21,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 00:22:21,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-24 00:22:21,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-24 00:22:21,993 INFO L87 Difference]: Start difference. First operand has 23 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 14 states have internal predecessors, (23), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 00:22:22,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 00:22:22,018 INFO L93 Difference]: Finished difference Result 44 states and 78 transitions. [2024-10-24 00:22:22,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-24 00:22:22,024 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-10-24 00:22:22,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 00:22:22,032 INFO L225 Difference]: With dead ends: 44 [2024-10-24 00:22:22,033 INFO L226 Difference]: Without dead ends: 21 [2024-10-24 00:22:22,036 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-24 00:22:22,040 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 00:22:22,041 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 29 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 00:22:22,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-10-24 00:22:22,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2024-10-24 00:22:22,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-10-24 00:22:22,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 29 transitions. [2024-10-24 00:22:22,072 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 29 transitions. Word has length 8 [2024-10-24 00:22:22,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 00:22:22,072 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 29 transitions. [2024-10-24 00:22:22,072 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 00:22:22,073 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 29 transitions. [2024-10-24 00:22:22,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-10-24 00:22:22,074 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 00:22:22,074 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 00:22:22,075 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 00:22:22,075 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 00:22:22,075 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 00:22:22,076 INFO L85 PathProgramCache]: Analyzing trace with hash -55601966, now seen corresponding path program 1 times [2024-10-24 00:22:22,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 00:22:22,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970970890] [2024-10-24 00:22:22,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:22:22,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 00:22:22,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:22:22,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 00:22:22,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 00:22:22,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970970890] [2024-10-24 00:22:22,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970970890] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 00:22:22,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 00:22:22,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 00:22:22,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718428649] [2024-10-24 00:22:22,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 00:22:22,247 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 00:22:22,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 00:22:22,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 00:22:22,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 00:22:22,249 INFO L87 Difference]: Start difference. First operand 21 states and 29 transitions. Second operand has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 00:22:22,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 00:22:22,321 INFO L93 Difference]: Finished difference Result 34 states and 46 transitions. [2024-10-24 00:22:22,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 00:22:22,322 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-10-24 00:22:22,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 00:22:22,323 INFO L225 Difference]: With dead ends: 34 [2024-10-24 00:22:22,323 INFO L226 Difference]: Without dead ends: 32 [2024-10-24 00:22:22,324 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 [2024-10-24 00:22:22,325 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 9 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 00:22:22,326 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 83 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 00:22:22,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-10-24 00:22:22,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 25. [2024-10-24 00:22:22,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 16 states have internal predecessors, (19), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-10-24 00:22:22,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 32 transitions. [2024-10-24 00:22:22,336 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 32 transitions. Word has length 8 [2024-10-24 00:22:22,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 00:22:22,336 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 32 transitions. [2024-10-24 00:22:22,336 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 00:22:22,336 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 32 transitions. [2024-10-24 00:22:22,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-10-24 00:22:22,337 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 00:22:22,337 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 00:22:22,337 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 00:22:22,339 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 00:22:22,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 00:22:22,339 INFO L85 PathProgramCache]: Analyzing trace with hash -1587104181, now seen corresponding path program 1 times [2024-10-24 00:22:22,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 00:22:22,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341840703] [2024-10-24 00:22:22,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:22:22,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 00:22:22,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:22:22,500 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-24 00:22:22,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:22:22,530 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 00:22:22,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 00:22:22,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341840703] [2024-10-24 00:22:22,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341840703] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 00:22:22,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 00:22:22,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 00:22:22,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570048760] [2024-10-24 00:22:22,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 00:22:22,533 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 00:22:22,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 00:22:22,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 00:22:22,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 00:22:22,535 INFO L87 Difference]: Start difference. First operand 25 states and 32 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-24 00:22:22,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 00:22:22,602 INFO L93 Difference]: Finished difference Result 38 states and 49 transitions. [2024-10-24 00:22:22,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 00:22:22,604 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2024-10-24 00:22:22,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 00:22:22,605 INFO L225 Difference]: With dead ends: 38 [2024-10-24 00:22:22,605 INFO L226 Difference]: Without dead ends: 36 [2024-10-24 00:22:22,606 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-24 00:22:22,607 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 9 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 00:22:22,609 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 80 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 00:22:22,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-10-24 00:22:22,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 29. [2024-10-24 00:22:22,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 states have internal predecessors, (22), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-10-24 00:22:22,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2024-10-24 00:22:22,620 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 13 [2024-10-24 00:22:22,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 00:22:22,620 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2024-10-24 00:22:22,620 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-24 00:22:22,621 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2024-10-24 00:22:22,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-10-24 00:22:22,621 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 00:22:22,621 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 00:22:22,622 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-24 00:22:22,622 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 00:22:22,622 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 00:22:22,623 INFO L85 PathProgramCache]: Analyzing trace with hash 1972613170, now seen corresponding path program 1 times [2024-10-24 00:22:22,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 00:22:22,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029283252] [2024-10-24 00:22:22,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:22:22,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 00:22:22,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-24 00:22:22,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1457128718] [2024-10-24 00:22:22,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:22:22,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 00:22:22,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 00:22:22,641 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 00:22:22,642 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-24 00:22:22,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:22:22,709 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-24 00:22:22,715 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 00:22:22,863 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 00:22:22,864 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 00:22:22,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 00:22:22,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029283252] [2024-10-24 00:22:22,865 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-24 00:22:22,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1457128718] [2024-10-24 00:22:22,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1457128718] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 00:22:22,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 00:22:22,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 00:22:22,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226099098] [2024-10-24 00:22:22,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 00:22:22,871 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 00:22:22,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 00:22:22,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 00:22:22,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 00:22:22,872 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-24 00:22:22,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 00:22:22,967 INFO L93 Difference]: Finished difference Result 55 states and 72 transitions. [2024-10-24 00:22:22,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 00:22:22,968 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2024-10-24 00:22:22,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 00:22:22,969 INFO L225 Difference]: With dead ends: 55 [2024-10-24 00:22:22,970 INFO L226 Difference]: Without dead ends: 42 [2024-10-24 00:22:22,971 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-24 00:22:22,972 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 5 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 00:22:22,972 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 82 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 00:22:22,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-10-24 00:22:22,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2024-10-24 00:22:22,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 25 states have (on average 1.2) internal successors, (30), 26 states have internal predecessors, (30), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-10-24 00:22:22,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 53 transitions. [2024-10-24 00:22:22,997 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 53 transitions. Word has length 18 [2024-10-24 00:22:22,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 00:22:22,999 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 53 transitions. [2024-10-24 00:22:22,999 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-24 00:22:22,999 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 53 transitions. [2024-10-24 00:22:23,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-10-24 00:22:23,000 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 00:22:23,001 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 00:22:23,022 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-24 00:22:23,201 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 [2024-10-24 00:22:23,202 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 00:22:23,203 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 00:22:23,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1810344840, now seen corresponding path program 1 times [2024-10-24 00:22:23,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 00:22:23,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799220325] [2024-10-24 00:22:23,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:22:23,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 00:22:23,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-24 00:22:23,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [963424228] [2024-10-24 00:22:23,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:22:23,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 00:22:23,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 00:22:23,237 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 00:22:23,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-24 00:22:23,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:22:23,289 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-24 00:22:23,291 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 00:22:23,381 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-24 00:22:23,382 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 00:22:23,579 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-24 00:22:23,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 00:22:23,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799220325] [2024-10-24 00:22:23,580 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-24 00:22:23,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [963424228] [2024-10-24 00:22:23,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [963424228] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 00:22:23,581 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-24 00:22:23,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2024-10-24 00:22:23,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403793422] [2024-10-24 00:22:23,581 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-24 00:22:23,582 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-24 00:22:23,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 00:22:23,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-24 00:22:23,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-10-24 00:22:23,585 INFO L87 Difference]: Start difference. First operand 42 states and 53 transitions. Second operand has 10 states, 10 states have (on average 2.1) internal successors, (21), 9 states have internal predecessors, (21), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 00:22:23,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 00:22:23,709 INFO L93 Difference]: Finished difference Result 55 states and 70 transitions. [2024-10-24 00:22:23,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 00:22:23,710 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 9 states have internal predecessors, (21), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 25 [2024-10-24 00:22:23,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 00:22:23,712 INFO L225 Difference]: With dead ends: 55 [2024-10-24 00:22:23,712 INFO L226 Difference]: Without dead ends: 53 [2024-10-24 00:22:23,714 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-10-24 00:22:23,715 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 12 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 00:22:23,716 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 74 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 00:22:23,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-10-24 00:22:23,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 52. [2024-10-24 00:22:23,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 31 states have (on average 1.2258064516129032) internal successors, (38), 33 states have internal predecessors, (38), 15 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-10-24 00:22:23,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 67 transitions. [2024-10-24 00:22:23,731 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 67 transitions. Word has length 25 [2024-10-24 00:22:23,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 00:22:23,731 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 67 transitions. [2024-10-24 00:22:23,732 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 9 states have internal predecessors, (21), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 00:22:23,732 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 67 transitions. [2024-10-24 00:22:23,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-10-24 00:22:23,733 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 00:22:23,733 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 00:22:23,748 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-24 00:22:23,933 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 00:22:23,934 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 00:22:23,934 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 00:22:23,934 INFO L85 PathProgramCache]: Analyzing trace with hash -447891575, now seen corresponding path program 1 times [2024-10-24 00:22:23,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 00:22:23,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870853985] [2024-10-24 00:22:23,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:22:23,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 00:22:23,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-24 00:22:23,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2078312783] [2024-10-24 00:22:23,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:22:23,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 00:22:23,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 00:22:23,973 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 00:22:23,975 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-24 00:22:24,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:22:24,022 INFO L255 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-24 00:22:24,024 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 00:22:24,132 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-10-24 00:22:24,132 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 00:22:24,214 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-10-24 00:22:24,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 00:22:24,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870853985] [2024-10-24 00:22:24,216 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-24 00:22:24,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2078312783] [2024-10-24 00:22:24,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2078312783] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-24 00:22:24,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 00:22:24,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2024-10-24 00:22:24,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058635798] [2024-10-24 00:22:24,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 00:22:24,217 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 00:22:24,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 00:22:24,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 00:22:24,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-24 00:22:24,218 INFO L87 Difference]: Start difference. First operand 52 states and 67 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-10-24 00:22:25,394 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-10-24 00:22:25,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 00:22:25,401 INFO L93 Difference]: Finished difference Result 62 states and 79 transitions. [2024-10-24 00:22:25,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 00:22:25,403 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 35 [2024-10-24 00:22:25,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 00:22:25,405 INFO L225 Difference]: With dead ends: 62 [2024-10-24 00:22:25,405 INFO L226 Difference]: Without dead ends: 60 [2024-10-24 00:22:25,406 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 61 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-24 00:22:25,406 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 5 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-10-24 00:22:25,407 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 75 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-10-24 00:22:25,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-10-24 00:22:25,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2024-10-24 00:22:25,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 35 states have (on average 1.2) internal successors, (42), 38 states have internal predecessors, (42), 17 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (16), 14 states have call predecessors, (16), 16 states have call successors, (16) [2024-10-24 00:22:25,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 75 transitions. [2024-10-24 00:22:25,422 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 75 transitions. Word has length 35 [2024-10-24 00:22:25,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 00:22:25,423 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 75 transitions. [2024-10-24 00:22:25,423 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-10-24 00:22:25,423 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 75 transitions. [2024-10-24 00:22:25,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-10-24 00:22:25,424 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 00:22:25,424 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 00:22:25,442 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-24 00:22:25,628 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 00:22:25,629 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 00:22:25,629 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 00:22:25,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1669992559, now seen corresponding path program 1 times [2024-10-24 00:22:25,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 00:22:25,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854387690] [2024-10-24 00:22:25,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:22:25,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 00:22:25,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:22:25,784 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-24 00:22:25,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:22:25,804 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-24 00:22:25,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:22:25,809 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-24 00:22:25,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:22:25,815 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-10-24 00:22:25,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:22:25,821 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-24 00:22:25,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:22:25,826 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-24 00:22:25,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:22:25,835 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-10-24 00:22:25,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 00:22:25,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854387690] [2024-10-24 00:22:25,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854387690] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 00:22:25,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 00:22:25,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 00:22:25,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097019406] [2024-10-24 00:22:25,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 00:22:25,836 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 00:22:25,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 00:22:25,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 00:22:25,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 00:22:25,837 INFO L87 Difference]: Start difference. First operand 59 states and 75 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-10-24 00:22:25,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 00:22:25,900 INFO L93 Difference]: Finished difference Result 67 states and 83 transitions. [2024-10-24 00:22:25,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 00:22:25,901 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 41 [2024-10-24 00:22:25,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 00:22:25,903 INFO L225 Difference]: With dead ends: 67 [2024-10-24 00:22:25,903 INFO L226 Difference]: Without dead ends: 55 [2024-10-24 00:22:25,906 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-24 00:22:25,907 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 3 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 00:22:25,907 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 92 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 00:22:25,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-10-24 00:22:25,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2024-10-24 00:22:25,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 33 states have (on average 1.1818181818181819) internal successors, (39), 36 states have internal predecessors, (39), 15 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2024-10-24 00:22:25,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 68 transitions. [2024-10-24 00:22:25,922 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 68 transitions. Word has length 41 [2024-10-24 00:22:25,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 00:22:25,925 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 68 transitions. [2024-10-24 00:22:25,926 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-10-24 00:22:25,926 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 68 transitions. [2024-10-24 00:22:25,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-10-24 00:22:25,927 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 00:22:25,927 INFO L215 NwaCegarLoop]: trace histogram [9, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 00:22:25,927 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-24 00:22:25,927 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 00:22:25,928 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 00:22:25,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1460518785, now seen corresponding path program 1 times [2024-10-24 00:22:25,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 00:22:25,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42837155] [2024-10-24 00:22:25,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:22:25,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 00:22:25,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-24 00:22:25,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1224955858] [2024-10-24 00:22:25,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:22:25,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 00:22:25,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 00:22:25,985 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 00:22:25,987 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-24 00:22:26,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:22:26,049 INFO L255 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-10-24 00:22:26,055 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 00:22:26,357 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 18 proven. 26 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-10-24 00:22:26,357 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 00:22:27,918 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 18 proven. 26 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-10-24 00:22:27,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 00:22:27,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42837155] [2024-10-24 00:22:27,919 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-24 00:22:27,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1224955858] [2024-10-24 00:22:27,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1224955858] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 00:22:27,919 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-24 00:22:27,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2024-10-24 00:22:27,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514275315] [2024-10-24 00:22:27,919 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-24 00:22:27,920 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-24 00:22:27,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 00:22:27,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-24 00:22:27,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2024-10-24 00:22:27,922 INFO L87 Difference]: Start difference. First operand 55 states and 68 transitions. Second operand has 15 states, 15 states have (on average 2.2) internal successors, (33), 14 states have internal predecessors, (33), 7 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) [2024-10-24 00:22:28,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 00:22:28,564 INFO L93 Difference]: Finished difference Result 130 states and 175 transitions. [2024-10-24 00:22:28,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-24 00:22:28,565 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.2) internal successors, (33), 14 states have internal predecessors, (33), 7 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) Word has length 55 [2024-10-24 00:22:28,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 00:22:28,567 INFO L225 Difference]: With dead ends: 130 [2024-10-24 00:22:28,567 INFO L226 Difference]: Without dead ends: 107 [2024-10-24 00:22:28,567 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2024-10-24 00:22:28,568 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 34 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-24 00:22:28,568 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 129 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-24 00:22:28,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2024-10-24 00:22:28,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 105. [2024-10-24 00:22:28,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 63 states have (on average 1.2222222222222223) internal successors, (77), 68 states have internal predecessors, (77), 31 states have call successors, (31), 10 states have call predecessors, (31), 10 states have return successors, (30), 26 states have call predecessors, (30), 30 states have call successors, (30) [2024-10-24 00:22:28,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 138 transitions. [2024-10-24 00:22:28,596 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 138 transitions. Word has length 55 [2024-10-24 00:22:28,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 00:22:28,596 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 138 transitions. [2024-10-24 00:22:28,596 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.2) internal successors, (33), 14 states have internal predecessors, (33), 7 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) [2024-10-24 00:22:28,596 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 138 transitions. [2024-10-24 00:22:28,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-10-24 00:22:28,598 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 00:22:28,598 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 00:22:28,615 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-24 00:22:28,802 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 00:22:28,803 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 00:22:28,803 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 00:22:28,803 INFO L85 PathProgramCache]: Analyzing trace with hash -814878683, now seen corresponding path program 1 times [2024-10-24 00:22:28,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 00:22:28,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293914829] [2024-10-24 00:22:28,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:22:28,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 00:22:28,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-24 00:22:28,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [54713409] [2024-10-24 00:22:28,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:22:28,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 00:22:28,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 00:22:28,829 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 00:22:28,837 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-24 00:22:28,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:22:28,892 INFO L255 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-10-24 00:22:28,894 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 00:22:29,208 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 22 proven. 34 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-10-24 00:22:29,209 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 00:22:29,872 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 22 proven. 34 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-10-24 00:22:29,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 00:22:29,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293914829] [2024-10-24 00:22:29,873 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-24 00:22:29,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [54713409] [2024-10-24 00:22:29,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [54713409] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 00:22:29,873 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-24 00:22:29,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 20 [2024-10-24 00:22:29,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577315619] [2024-10-24 00:22:29,873 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-24 00:22:29,874 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-10-24 00:22:29,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 00:22:29,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-10-24 00:22:29,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2024-10-24 00:22:29,875 INFO L87 Difference]: Start difference. First operand 105 states and 138 transitions. Second operand has 20 states, 18 states have (on average 1.9444444444444444) internal successors, (35), 18 states have internal predecessors, (35), 11 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (20), 9 states have call predecessors, (20), 9 states have call successors, (20) [2024-10-24 00:22:30,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 00:22:30,513 INFO L93 Difference]: Finished difference Result 170 states and 224 transitions. [2024-10-24 00:22:30,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-24 00:22:30,514 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 1.9444444444444444) internal successors, (35), 18 states have internal predecessors, (35), 11 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (20), 9 states have call predecessors, (20), 9 states have call successors, (20) Word has length 66 [2024-10-24 00:22:30,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 00:22:30,516 INFO L225 Difference]: With dead ends: 170 [2024-10-24 00:22:30,517 INFO L226 Difference]: Without dead ends: 125 [2024-10-24 00:22:30,518 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=120, Invalid=386, Unknown=0, NotChecked=0, Total=506 [2024-10-24 00:22:30,519 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 14 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-24 00:22:30,520 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 178 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-24 00:22:30,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2024-10-24 00:22:30,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 100. [2024-10-24 00:22:30,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 61 states have (on average 1.1639344262295082) internal successors, (71), 65 states have internal predecessors, (71), 27 states have call successors, (27), 11 states have call predecessors, (27), 11 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2024-10-24 00:22:30,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 124 transitions. [2024-10-24 00:22:30,551 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 124 transitions. Word has length 66 [2024-10-24 00:22:30,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 00:22:30,552 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 124 transitions. [2024-10-24 00:22:30,552 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 1.9444444444444444) internal successors, (35), 18 states have internal predecessors, (35), 11 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (20), 9 states have call predecessors, (20), 9 states have call successors, (20) [2024-10-24 00:22:30,552 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 124 transitions. [2024-10-24 00:22:30,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-10-24 00:22:30,553 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 00:22:30,553 INFO L215 NwaCegarLoop]: trace histogram [12, 11, 11, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 00:22:30,571 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-24 00:22:30,754 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 00:22:30,754 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 00:22:30,755 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 00:22:30,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1399001704, now seen corresponding path program 1 times [2024-10-24 00:22:30,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 00:22:30,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267682832] [2024-10-24 00:22:30,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:22:30,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 00:22:30,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:22:31,153 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-24 00:22:31,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:22:31,158 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-24 00:22:31,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:22:31,162 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-24 00:22:31,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:22:31,167 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-10-24 00:22:31,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:22:31,178 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-24 00:22:31,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:22:31,193 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-10-24 00:22:31,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:22:31,216 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-24 00:22:31,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:22:31,223 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-10-24 00:22:31,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:22:31,233 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-24 00:22:31,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:22:31,242 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-24 00:22:31,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:22:31,247 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-24 00:22:31,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:22:31,251 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-10-24 00:22:31,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 00:22:31,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267682832] [2024-10-24 00:22:31,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267682832] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 00:22:31,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [790657208] [2024-10-24 00:22:31,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:22:31,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 00:22:31,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 00:22:31,254 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 00:22:31,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-24 00:22:31,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:22:31,324 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-24 00:22:31,329 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 00:22:31,488 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-10-24 00:22:31,488 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 00:22:31,877 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-10-24 00:22:31,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [790657208] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 00:22:31,878 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 00:22:31,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 14 [2024-10-24 00:22:31,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235250785] [2024-10-24 00:22:31,878 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 00:22:31,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-24 00:22:31,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 00:22:31,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-24 00:22:31,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2024-10-24 00:22:31,880 INFO L87 Difference]: Start difference. First operand 100 states and 124 transitions. Second operand has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 12 states have internal predecessors, (40), 8 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (32), 8 states have call predecessors, (32), 8 states have call successors, (32) [2024-10-24 00:22:32,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 00:22:32,093 INFO L93 Difference]: Finished difference Result 119 states and 143 transitions. [2024-10-24 00:22:32,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 00:22:32,094 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 12 states have internal predecessors, (40), 8 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (32), 8 states have call predecessors, (32), 8 states have call successors, (32) Word has length 71 [2024-10-24 00:22:32,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 00:22:32,095 INFO L225 Difference]: With dead ends: 119 [2024-10-24 00:22:32,095 INFO L226 Difference]: Without dead ends: 92 [2024-10-24 00:22:32,096 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 156 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2024-10-24 00:22:32,096 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 8 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 00:22:32,097 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 187 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 00:22:32,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2024-10-24 00:22:32,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2024-10-24 00:22:32,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 57 states have (on average 1.1228070175438596) internal successors, (64), 60 states have internal predecessors, (64), 23 states have call successors, (23), 11 states have call predecessors, (23), 11 states have return successors, (22), 20 states have call predecessors, (22), 22 states have call successors, (22) [2024-10-24 00:22:32,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 109 transitions. [2024-10-24 00:22:32,119 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 109 transitions. Word has length 71 [2024-10-24 00:22:32,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 00:22:32,120 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 109 transitions. [2024-10-24 00:22:32,120 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 12 states have internal predecessors, (40), 8 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (32), 8 states have call predecessors, (32), 8 states have call successors, (32) [2024-10-24 00:22:32,120 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 109 transitions. [2024-10-24 00:22:32,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-10-24 00:22:32,121 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 00:22:32,122 INFO L215 NwaCegarLoop]: trace histogram [14, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 00:22:32,140 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-24 00:22:32,322 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 00:22:32,323 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 00:22:32,323 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 00:22:32,323 INFO L85 PathProgramCache]: Analyzing trace with hash -2065528550, now seen corresponding path program 1 times [2024-10-24 00:22:32,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 00:22:32,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316461023] [2024-10-24 00:22:32,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:22:32,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 00:22:32,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:22:32,470 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-24 00:22:32,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:22:32,474 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-24 00:22:32,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:22:32,477 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-24 00:22:32,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:22:32,481 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-10-24 00:22:32,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:22:32,483 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-24 00:22:32,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:22:32,486 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-10-24 00:22:32,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:22:32,489 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-24 00:22:32,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:22:32,493 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-10-24 00:22:32,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:22:32,497 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-24 00:22:32,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:22:32,502 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-10-24 00:22:32,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:22:32,506 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-24 00:22:32,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:22:32,510 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-24 00:22:32,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:22:32,513 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-10-24 00:22:32,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:22:32,515 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 38 proven. 10 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked. [2024-10-24 00:22:32,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 00:22:32,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316461023] [2024-10-24 00:22:32,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316461023] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 00:22:32,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1475953005] [2024-10-24 00:22:32,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:22:32,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 00:22:32,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 00:22:32,518 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 00:22:32,520 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-24 00:22:32,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:22:32,578 INFO L255 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-24 00:22:32,580 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 00:22:32,719 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2024-10-24 00:22:32,720 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 00:22:32,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1475953005] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 00:22:32,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 00:22:32,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 9 [2024-10-24 00:22:32,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972141333] [2024-10-24 00:22:32,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 00:22:32,724 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 00:22:32,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 00:22:32,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 00:22:32,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-10-24 00:22:32,725 INFO L87 Difference]: Start difference. First operand 92 states and 109 transitions. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2024-10-24 00:22:32,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 00:22:32,832 INFO L93 Difference]: Finished difference Result 124 states and 150 transitions. [2024-10-24 00:22:32,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 00:22:32,833 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 85 [2024-10-24 00:22:32,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 00:22:32,834 INFO L225 Difference]: With dead ends: 124 [2024-10-24 00:22:32,834 INFO L226 Difference]: Without dead ends: 87 [2024-10-24 00:22:32,835 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-10-24 00:22:32,835 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 8 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 00:22:32,835 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 92 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 00:22:32,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2024-10-24 00:22:32,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 78. [2024-10-24 00:22:32,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 49 states have (on average 1.0816326530612246) internal successors, (53), 51 states have internal predecessors, (53), 18 states have call successors, (18), 10 states have call predecessors, (18), 10 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2024-10-24 00:22:32,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 88 transitions. [2024-10-24 00:22:32,855 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 88 transitions. Word has length 85 [2024-10-24 00:22:32,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 00:22:32,855 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 88 transitions. [2024-10-24 00:22:32,855 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2024-10-24 00:22:32,856 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 88 transitions. [2024-10-24 00:22:32,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-10-24 00:22:32,857 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 00:22:32,857 INFO L215 NwaCegarLoop]: trace histogram [14, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-10-24 00:22:32,875 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-24 00:22:33,057 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 00:22:33,058 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 00:22:33,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 00:22:33,058 INFO L85 PathProgramCache]: Analyzing trace with hash -376584808, now seen corresponding path program 2 times [2024-10-24 00:22:33,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 00:22:33,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687262497] [2024-10-24 00:22:33,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:22:33,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 00:22:33,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:22:33,474 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-24 00:22:33,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:22:33,479 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-24 00:22:33,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:22:33,484 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-24 00:22:33,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:22:33,489 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-10-24 00:22:33,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:22:33,494 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-24 00:22:33,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:22:33,498 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-10-24 00:22:33,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:22:33,503 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-24 00:22:33,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:22:33,508 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-10-24 00:22:33,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:22:33,513 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-24 00:22:33,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:22:33,518 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-10-24 00:22:33,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:22:33,524 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-24 00:22:33,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:22:33,529 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-24 00:22:33,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:22:33,537 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-10-24 00:22:33,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:22:33,545 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 30 proven. 20 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-10-24 00:22:33,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 00:22:33,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687262497] [2024-10-24 00:22:33,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687262497] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 00:22:33,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1012773676] [2024-10-24 00:22:33,546 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 00:22:33,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 00:22:33,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 00:22:33,548 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 00:22:33,550 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-24 00:22:33,610 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-24 00:22:33,610 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 00:22:33,616 INFO L255 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-24 00:22:33,619 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 00:22:33,867 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 30 proven. 20 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-10-24 00:22:33,868 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 00:22:34,667 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 30 proven. 20 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-10-24 00:22:34,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1012773676] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 00:22:34,668 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 00:22:34,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 24 [2024-10-24 00:22:34,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958034868] [2024-10-24 00:22:34,668 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 00:22:34,669 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-10-24 00:22:34,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 00:22:34,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-10-24 00:22:34,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2024-10-24 00:22:34,670 INFO L87 Difference]: Start difference. First operand 78 states and 88 transitions. Second operand has 24 states, 24 states have (on average 2.1666666666666665) internal successors, (52), 24 states have internal predecessors, (52), 13 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (39), 12 states have call predecessors, (39), 12 states have call successors, (39) [2024-10-24 00:22:34,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 00:22:34,953 INFO L93 Difference]: Finished difference Result 125 states and 142 transitions. [2024-10-24 00:22:34,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 00:22:34,953 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.1666666666666665) internal successors, (52), 24 states have internal predecessors, (52), 13 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (39), 12 states have call predecessors, (39), 12 states have call successors, (39) Word has length 85 [2024-10-24 00:22:34,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 00:22:34,954 INFO L225 Difference]: With dead ends: 125 [2024-10-24 00:22:34,954 INFO L226 Difference]: Without dead ends: 76 [2024-10-24 00:22:34,955 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 180 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=195, Invalid=675, Unknown=0, NotChecked=0, Total=870 [2024-10-24 00:22:34,955 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 18 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-24 00:22:34,956 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 392 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-24 00:22:34,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2024-10-24 00:22:34,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2024-10-24 00:22:34,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 48 states have (on average 1.0208333333333333) internal successors, (49), 49 states have internal predecessors, (49), 17 states have call successors, (17), 10 states have call predecessors, (17), 10 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-10-24 00:22:34,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 82 transitions. [2024-10-24 00:22:34,976 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 82 transitions. Word has length 85 [2024-10-24 00:22:34,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 00:22:34,977 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 82 transitions. [2024-10-24 00:22:34,977 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.1666666666666665) internal successors, (52), 24 states have internal predecessors, (52), 13 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (39), 12 states have call predecessors, (39), 12 states have call successors, (39) [2024-10-24 00:22:34,977 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 82 transitions. [2024-10-24 00:22:34,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-10-24 00:22:34,979 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 00:22:34,979 INFO L215 NwaCegarLoop]: trace histogram [15, 14, 14, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 00:22:34,999 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-24 00:22:35,179 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-10-24 00:22:35,180 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 00:22:35,180 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 00:22:35,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1944501767, now seen corresponding path program 2 times [2024-10-24 00:22:35,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 00:22:35,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552087952] [2024-10-24 00:22:35,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:22:35,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 00:22:35,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-24 00:22:35,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [118307557] [2024-10-24 00:22:35,222 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 00:22:35,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 00:22:35,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 00:22:35,224 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 00:22:35,226 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-24 00:22:35,286 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-24 00:22:35,286 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 00:22:35,288 INFO L255 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-10-24 00:22:35,290 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 00:22:35,565 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 48 proven. 45 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2024-10-24 00:22:35,566 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 00:22:59,267 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 48 proven. 45 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2024-10-24 00:22:59,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 00:22:59,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552087952] [2024-10-24 00:22:59,267 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-24 00:22:59,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [118307557] [2024-10-24 00:22:59,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [118307557] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 00:22:59,267 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-24 00:22:59,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 20 [2024-10-24 00:22:59,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507417854] [2024-10-24 00:22:59,268 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-24 00:22:59,268 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-10-24 00:22:59,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 00:22:59,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-10-24 00:22:59,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2024-10-24 00:22:59,269 INFO L87 Difference]: Start difference. First operand 76 states and 82 transitions. Second operand has 20 states, 20 states have (on average 2.15) internal successors, (43), 19 states have internal predecessors, (43), 12 states have call successors, (30), 3 states have call predecessors, (30), 2 states have return successors, (28), 12 states have call predecessors, (28), 12 states have call successors, (28) [2024-10-24 00:22:59,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 00:22:59,663 INFO L93 Difference]: Finished difference Result 86 states and 90 transitions. [2024-10-24 00:22:59,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-24 00:22:59,663 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.15) internal successors, (43), 19 states have internal predecessors, (43), 12 states have call successors, (30), 3 states have call predecessors, (30), 2 states have return successors, (28), 12 states have call predecessors, (28), 12 states have call successors, (28) Word has length 90 [2024-10-24 00:22:59,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 00:22:59,664 INFO L225 Difference]: With dead ends: 86 [2024-10-24 00:22:59,664 INFO L226 Difference]: Without dead ends: 84 [2024-10-24 00:22:59,664 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=92, Invalid=328, Unknown=0, NotChecked=0, Total=420 [2024-10-24 00:22:59,667 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 5 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-24 00:22:59,667 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 210 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-24 00:22:59,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-10-24 00:22:59,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2024-10-24 00:22:59,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 54 states have (on average 1.0185185185185186) internal successors, (55), 55 states have internal predecessors, (55), 17 states have call successors, (17), 12 states have call predecessors, (17), 12 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-10-24 00:22:59,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 88 transitions. [2024-10-24 00:22:59,684 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 88 transitions. Word has length 90 [2024-10-24 00:22:59,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 00:22:59,685 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 88 transitions. [2024-10-24 00:22:59,685 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.15) internal successors, (43), 19 states have internal predecessors, (43), 12 states have call successors, (30), 3 states have call predecessors, (30), 2 states have return successors, (28), 12 states have call predecessors, (28), 12 states have call successors, (28) [2024-10-24 00:22:59,685 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 88 transitions. [2024-10-24 00:22:59,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-10-24 00:22:59,686 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 00:22:59,686 INFO L215 NwaCegarLoop]: trace histogram [16, 15, 15, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 00:22:59,707 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-10-24 00:22:59,888 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-24 00:22:59,889 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 00:22:59,889 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 00:22:59,889 INFO L85 PathProgramCache]: Analyzing trace with hash 1552559470, now seen corresponding path program 1 times [2024-10-24 00:22:59,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 00:22:59,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774318587] [2024-10-24 00:22:59,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:22:59,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 00:22:59,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-24 00:22:59,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [534667529] [2024-10-24 00:22:59,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:22:59,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 00:22:59,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 00:22:59,930 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 00:22:59,931 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-24 00:22:59,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:23:00,003 INFO L255 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-10-24 00:23:00,006 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 00:23:00,392 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 32 proven. 68 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2024-10-24 00:23:00,392 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 00:23:01,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 00:23:01,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774318587] [2024-10-24 00:23:01,251 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-24 00:23:01,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [534667529] [2024-10-24 00:23:01,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [534667529] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 00:23:01,251 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-10-24 00:23:01,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2024-10-24 00:23:01,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212508596] [2024-10-24 00:23:01,252 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-10-24 00:23:01,252 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-24 00:23:01,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 00:23:01,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-24 00:23:01,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2024-10-24 00:23:01,253 INFO L87 Difference]: Start difference. First operand 84 states and 88 transitions. Second operand has 14 states, 13 states have (on average 2.0) internal successors, (26), 13 states have internal predecessors, (26), 6 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2024-10-24 00:23:01,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 00:23:01,511 INFO L93 Difference]: Finished difference Result 90 states and 93 transitions. [2024-10-24 00:23:01,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-24 00:23:01,512 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.0) internal successors, (26), 13 states have internal predecessors, (26), 6 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) Word has length 96 [2024-10-24 00:23:01,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 00:23:01,513 INFO L225 Difference]: With dead ends: 90 [2024-10-24 00:23:01,513 INFO L226 Difference]: Without dead ends: 86 [2024-10-24 00:23:01,514 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=101, Invalid=361, Unknown=0, NotChecked=0, Total=462 [2024-10-24 00:23:01,514 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 3 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-24 00:23:01,514 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 283 Invalid, 380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 373 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-24 00:23:01,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-10-24 00:23:01,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2024-10-24 00:23:01,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 56 states have (on average 1.0) internal successors, (56), 56 states have internal predecessors, (56), 17 states have call successors, (17), 13 states have call predecessors, (17), 12 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-10-24 00:23:01,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 89 transitions. [2024-10-24 00:23:01,535 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 89 transitions. Word has length 96 [2024-10-24 00:23:01,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 00:23:01,535 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 89 transitions. [2024-10-24 00:23:01,535 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.0) internal successors, (26), 13 states have internal predecessors, (26), 6 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2024-10-24 00:23:01,535 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 89 transitions. [2024-10-24 00:23:01,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-10-24 00:23:01,536 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 00:23:01,536 INFO L215 NwaCegarLoop]: trace histogram [17, 16, 16, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 00:23:01,549 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-24 00:23:01,737 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-24 00:23:01,737 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 00:23:01,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 00:23:01,738 INFO L85 PathProgramCache]: Analyzing trace with hash -2060413457, now seen corresponding path program 1 times [2024-10-24 00:23:01,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 00:23:01,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753241347] [2024-10-24 00:23:01,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:23:01,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 00:23:01,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:23:02,089 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-24 00:23:02,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:23:02,092 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-24 00:23:02,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:23:02,095 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-24 00:23:02,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:23:02,098 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-10-24 00:23:02,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:23:02,102 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-24 00:23:02,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:23:02,104 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-10-24 00:23:02,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:23:02,107 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-24 00:23:02,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:23:02,110 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-10-24 00:23:02,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:23:02,113 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-24 00:23:02,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:23:02,116 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-10-24 00:23:02,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:23:02,119 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-24 00:23:02,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:23:02,122 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-24 00:23:02,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:23:02,125 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-10-24 00:23:02,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:23:02,128 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-10-24 00:23:02,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:23:02,131 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-10-24 00:23:02,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:23:02,133 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-10-24 00:23:02,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:23:02,135 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 32 proven. 28 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-10-24 00:23:02,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 00:23:02,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753241347] [2024-10-24 00:23:02,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753241347] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 00:23:02,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1492412166] [2024-10-24 00:23:02,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:23:02,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 00:23:02,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 00:23:02,139 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 00:23:02,141 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-24 00:23:02,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:23:02,202 INFO L255 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-10-24 00:23:02,205 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 00:23:02,584 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 34 proven. 71 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2024-10-24 00:23:02,585 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 00:23:04,361 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 34 proven. 71 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2024-10-24 00:23:04,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1492412166] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 00:23:04,361 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 00:23:04,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 15, 14] total 30 [2024-10-24 00:23:04,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102005314] [2024-10-24 00:23:04,362 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 00:23:04,363 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-10-24 00:23:04,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 00:23:04,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-10-24 00:23:04,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=720, Unknown=0, NotChecked=0, Total=870 [2024-10-24 00:23:04,364 INFO L87 Difference]: Start difference. First operand 86 states and 89 transitions. Second operand has 30 states, 30 states have (on average 2.0) internal successors, (60), 27 states have internal predecessors, (60), 17 states have call successors, (49), 3 states have call predecessors, (49), 2 states have return successors, (47), 17 states have call predecessors, (47), 17 states have call successors, (47) [2024-10-24 00:23:04,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 00:23:04,683 INFO L93 Difference]: Finished difference Result 90 states and 92 transitions. [2024-10-24 00:23:04,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-24 00:23:04,683 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.0) internal successors, (60), 27 states have internal predecessors, (60), 17 states have call successors, (49), 3 states have call predecessors, (49), 2 states have return successors, (47), 17 states have call predecessors, (47), 17 states have call successors, (47) Word has length 101 [2024-10-24 00:23:04,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 00:23:04,684 INFO L225 Difference]: With dead ends: 90 [2024-10-24 00:23:04,684 INFO L226 Difference]: Without dead ends: 0 [2024-10-24 00:23:04,685 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 320 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=199, Invalid=923, Unknown=0, NotChecked=0, Total=1122 [2024-10-24 00:23:04,685 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 7 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-24 00:23:04,685 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 267 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 338 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-24 00:23:04,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-10-24 00:23:04,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-10-24 00:23:04,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 00:23:04,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-10-24 00:23:04,686 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 101 [2024-10-24 00:23:04,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 00:23:04,686 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-24 00:23:04,687 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.0) internal successors, (60), 27 states have internal predecessors, (60), 17 states have call successors, (49), 3 states have call predecessors, (49), 2 states have return successors, (47), 17 states have call predecessors, (47), 17 states have call successors, (47) [2024-10-24 00:23:04,687 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-10-24 00:23:04,687 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-10-24 00:23:04,689 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-24 00:23:04,710 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-10-24 00:23:04,890 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-24 00:23:04,893 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 00:23:04,895 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-10-24 00:23:05,404 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-24 00:23:05,429 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 12:23:05 BoogieIcfgContainer [2024-10-24 00:23:05,431 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-24 00:23:05,431 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-24 00:23:05,431 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-24 00:23:05,432 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-24 00:23:05,432 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:22:21" (3/4) ... [2024-10-24 00:23:05,434 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-24 00:23:05,438 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2024-10-24 00:23:05,442 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2024-10-24 00:23:05,443 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2024-10-24 00:23:05,443 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-10-24 00:23:05,443 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-10-24 00:23:05,443 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-10-24 00:23:05,548 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-24 00:23:05,548 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-24 00:23:05,548 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-24 00:23:05,549 INFO L158 Benchmark]: Toolchain (without parser) took 44608.52ms. Allocated memory was 167.8MB in the beginning and 232.8MB in the end (delta: 65.0MB). Free memory was 113.2MB in the beginning and 197.4MB in the end (delta: -84.3MB). Peak memory consumption was 119.7MB. Max. memory is 16.1GB. [2024-10-24 00:23:05,549 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 167.8MB. Free memory is still 131.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-24 00:23:05,550 INFO L158 Benchmark]: CACSL2BoogieTranslator took 298.58ms. Allocated memory is still 167.8MB. Free memory was 113.2MB in the beginning and 99.9MB in the end (delta: 13.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-10-24 00:23:05,550 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.75ms. Allocated memory is still 167.8MB. Free memory was 99.9MB in the beginning and 97.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-24 00:23:05,550 INFO L158 Benchmark]: Boogie Preprocessor took 42.70ms. Allocated memory is still 167.8MB. Free memory was 97.8MB in the beginning and 96.4MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-24 00:23:05,550 INFO L158 Benchmark]: RCFGBuilder took 349.87ms. Allocated memory is still 167.8MB. Free memory was 96.4MB in the beginning and 83.1MB in the end (delta: 13.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-10-24 00:23:05,551 INFO L158 Benchmark]: TraceAbstraction took 43748.43ms. Allocated memory was 167.8MB in the beginning and 232.8MB in the end (delta: 65.0MB). Free memory was 82.4MB in the beginning and 64.7MB in the end (delta: 17.7MB). Peak memory consumption was 84.1MB. Max. memory is 16.1GB. [2024-10-24 00:23:05,551 INFO L158 Benchmark]: Witness Printer took 117.11ms. Allocated memory is still 232.8MB. Free memory was 64.7MB in the beginning and 197.4MB in the end (delta: -132.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-24 00:23:05,553 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 167.8MB. Free memory is still 131.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 298.58ms. Allocated memory is still 167.8MB. Free memory was 113.2MB in the beginning and 99.9MB in the end (delta: 13.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.75ms. Allocated memory is still 167.8MB. Free memory was 99.9MB in the beginning and 97.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 42.70ms. Allocated memory is still 167.8MB. Free memory was 97.8MB in the beginning and 96.4MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 349.87ms. Allocated memory is still 167.8MB. Free memory was 96.4MB in the beginning and 83.1MB in the end (delta: 13.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 43748.43ms. Allocated memory was 167.8MB in the beginning and 232.8MB in the end (delta: 65.0MB). Free memory was 82.4MB in the beginning and 64.7MB in the end (delta: 17.7MB). Peak memory consumption was 84.1MB. Max. memory is 16.1GB. * Witness Printer took 117.11ms. Allocated memory is still 232.8MB. Free memory was 64.7MB in the beginning and 197.4MB in the end (delta: -132.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 43.2s, OverallIterations: 15, TraceHistogramMax: 17, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 4.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 182 SdHoareTripleChecker+Valid, 3.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 140 mSDsluCounter, 2253 SdHoareTripleChecker+Invalid, 3.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1848 mSDsCounter, 195 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2145 IncrementalHoareTripleChecker+Invalid, 2340 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 195 mSolverCounterUnsat, 405 mSDtfsCounter, 2145 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1467 GetRequests, 1271 SyntacticMatches, 6 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 811 ImplicationChecksByTransitivity, 6.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=105occurred in iteration=8, InterpolantAutomatonStates: 128, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 15 MinimizatonAttempts, 52 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 34.7s InterpolantComputationTime, 1524 NumberOfCodeBlocks, 1524 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 1640 ConstructedInterpolants, 0 QuantifiedInterpolants, 18501 SizeOfPredicates, 23 NumberOfNonLiveVariables, 1909 ConjunctsInSsa, 280 ConjunctsInUnsatCore, 27 InterpolantComputations, 7 PerfectInterpolantSequences, 5854/6411 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 44]: Loop Invariant Derived loop invariant: ((((((((((d == 1) && (p == 1)) && (q == 0)) && (A == r)) && (B == 1)) || ((((((2 == A) && (2 == p)) && (r == 0)) && (2 == q)) && (B == 1)) && (2 == d))) || ((((((d == 1) && (p == 1)) && (2 == A)) && (r == 0)) && (2 == q)) && (B == 1))) || ((((((p == 4) && (2 == A)) && (q == 0)) && (d == 4)) && (2 == r)) && (B == 1))) || ((((((2 == p) && (q == 0)) && (A == 1)) && (r == 1)) && (B == 1)) && (2 == d))) || ((((((d == 1) && (p == 1)) && (r == 0)) && (q == 1)) && (A == 1)) && (B == 1))) - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: (((((((((2 == p) && (q == 0)) && (A <= 2)) && (A == r)) && (1 <= r)) && (B == 1)) && (2 == d)) || (((((((d == 1) && (p == 1)) && (q == 0)) && (A <= 2)) && (A == r)) && (B == 1)) && (0 <= A))) || ((((((p == 4) && (q == 0)) && (A == r)) && (d == 4)) && (2 == r)) && (B == 1))) - ProcedureContractResult [Line: 14]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (cond != 0) Ensures: (cond != 0) RESULT: Ultimate proved your program to be correct! [2024-10-24 00:23:05,601 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE