./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound20.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c7c6ca5d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound20.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 39b854852f8258ff198098e27d83a5b0e296df48090ebea0d59d234417af0752 --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-08 14:26:26,143 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 14:26:26,241 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 14:26:26,250 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 14:26:26,251 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 14:26:26,296 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 14:26:26,297 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 14:26:26,297 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 14:26:26,297 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 14:26:26,298 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 14:26:26,298 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 14:26:26,298 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 14:26:26,299 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 14:26:26,299 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 14:26:26,303 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 14:26:26,303 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 14:26:26,304 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 14:26:26,304 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 14:26:26,304 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 14:26:26,304 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 14:26:26,305 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 14:26:26,307 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 14:26:26,308 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 14:26:26,308 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 14:26:26,308 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 14:26:26,308 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 14:26:26,308 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 14:26:26,309 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 14:26:26,309 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 14:26:26,309 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 14:26:26,309 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 14:26:26,309 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 14:26:26,309 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 14:26:26,310 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 14:26:26,310 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 14:26:26,310 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 14:26:26,310 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 14:26:26,310 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 14:26:26,311 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 14:26:26,311 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 14:26:26,311 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 14:26:26,317 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 14:26:26,317 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 39b854852f8258ff198098e27d83a5b0e296df48090ebea0d59d234417af0752 [2024-11-08 14:26:26,636 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 14:26:26,659 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 14:26:26,661 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 14:26:26,662 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 14:26:26,663 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 14:26:26,663 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound20.c [2024-11-08 14:26:28,080 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 14:26:28,250 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 14:26:28,250 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound20.c [2024-11-08 14:26:28,256 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52c6cddee/5c5c6362f679421181357ea8c87187c3/FLAGf53fc27d4 [2024-11-08 14:26:28,649 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52c6cddee/5c5c6362f679421181357ea8c87187c3 [2024-11-08 14:26:28,651 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 14:26:28,652 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 14:26:28,655 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 14:26:28,655 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 14:26:28,663 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 14:26:28,663 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 02:26:28" (1/1) ... [2024-11-08 14:26:28,664 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a876d2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:26:28, skipping insertion in model container [2024-11-08 14:26:28,664 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 02:26:28" (1/1) ... [2024-11-08 14:26:28,683 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 14:26:28,824 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound20.c[490,503] [2024-11-08 14:26:28,845 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 14:26:28,857 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 14:26:28,866 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound20.c[490,503] [2024-11-08 14:26:28,877 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 14:26:28,891 INFO L204 MainTranslator]: Completed translation [2024-11-08 14:26:28,892 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:26:28 WrapperNode [2024-11-08 14:26:28,892 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 14:26:28,893 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 14:26:28,893 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 14:26:28,896 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 14:26:28,901 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:26:28" (1/1) ... [2024-11-08 14:26:28,907 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:26:28" (1/1) ... [2024-11-08 14:26:28,922 INFO L138 Inliner]: procedures = 14, calls = 16, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 83 [2024-11-08 14:26:28,922 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 14:26:28,923 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 14:26:28,923 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 14:26:28,923 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 14:26:28,931 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:26:28" (1/1) ... [2024-11-08 14:26:28,931 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:26:28" (1/1) ... [2024-11-08 14:26:28,932 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:26:28" (1/1) ... [2024-11-08 14:26:28,939 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-08 14:26:28,939 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:26:28" (1/1) ... [2024-11-08 14:26:28,940 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:26:28" (1/1) ... [2024-11-08 14:26:28,941 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:26:28" (1/1) ... [2024-11-08 14:26:28,944 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:26:28" (1/1) ... [2024-11-08 14:26:28,944 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:26:28" (1/1) ... [2024-11-08 14:26:28,945 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:26:28" (1/1) ... [2024-11-08 14:26:28,946 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 14:26:28,947 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 14:26:28,947 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 14:26:28,947 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 14:26:28,947 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:26:28" (1/1) ... [2024-11-08 14:26:28,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 14:26:28,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:26:28,977 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 14:26:28,979 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 14:26:29,010 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 14:26:29,010 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-08 14:26:29,010 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-08 14:26:29,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 14:26:29,010 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 14:26:29,010 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 14:26:29,010 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-08 14:26:29,011 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-08 14:26:29,118 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 14:26:29,119 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 14:26:29,248 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2024-11-08 14:26:29,248 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 14:26:29,258 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 14:26:29,258 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-08 14:26:29,259 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 02:26:29 BoogieIcfgContainer [2024-11-08 14:26:29,259 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 14:26:29,260 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 14:26:29,260 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 14:26:29,263 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 14:26:29,263 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 02:26:28" (1/3) ... [2024-11-08 14:26:29,263 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27287a98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 02:26:29, skipping insertion in model container [2024-11-08 14:26:29,264 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:26:28" (2/3) ... [2024-11-08 14:26:29,264 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27287a98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 02:26:29, skipping insertion in model container [2024-11-08 14:26:29,264 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 02:26:29" (3/3) ... [2024-11-08 14:26:29,265 INFO L112 eAbstractionObserver]: Analyzing ICFG egcd3-ll_valuebound20.c [2024-11-08 14:26:29,277 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 14:26:29,277 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 14:26:29,317 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 14:26:29,322 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;@20c337a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 14:26:29,326 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-08 14:26:29,330 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 23 states have internal predecessors, (34), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-08 14:26:29,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-08 14:26:29,335 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:26:29,336 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:26:29,336 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:26:29,340 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:26:29,340 INFO L85 PathProgramCache]: Analyzing trace with hash 872320404, now seen corresponding path program 1 times [2024-11-08 14:26:29,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:26:29,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692475059] [2024-11-08 14:26:29,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:26:29,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:26:29,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:26:29,453 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 14:26:29,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:26:29,459 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-08 14:26:29,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:26:29,463 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-08 14:26:29,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:26:29,466 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-08 14:26:29,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:26:29,471 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-08 14:26:29,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:26:29,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692475059] [2024-11-08 14:26:29,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692475059] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 14:26:29,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 14:26:29,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 14:26:29,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008248703] [2024-11-08 14:26:29,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 14:26:29,477 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-08 14:26:29,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:26:29,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-08 14:26:29,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 14:26:29,498 INFO L87 Difference]: Start difference. First operand has 35 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 23 states have internal predecessors, (34), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-08 14:26:29,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:26:29,516 INFO L93 Difference]: Finished difference Result 67 states and 109 transitions. [2024-11-08 14:26:29,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-08 14:26:29,518 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 29 [2024-11-08 14:26:29,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:26:29,523 INFO L225 Difference]: With dead ends: 67 [2024-11-08 14:26:29,524 INFO L226 Difference]: Without dead ends: 31 [2024-11-08 14:26:29,526 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 14:26:29,528 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 14:26:29,529 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 14:26:29,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-11-08 14:26:29,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2024-11-08 14:26:29,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 20 states have internal predecessors, (23), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-08 14:26:29,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 40 transitions. [2024-11-08 14:26:29,558 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 40 transitions. Word has length 29 [2024-11-08 14:26:29,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:26:29,558 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 40 transitions. [2024-11-08 14:26:29,559 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-08 14:26:29,559 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 40 transitions. [2024-11-08 14:26:29,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-08 14:26:29,560 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:26:29,560 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:26:29,560 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 14:26:29,561 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:26:29,561 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:26:29,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1714405113, now seen corresponding path program 1 times [2024-11-08 14:26:29,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:26:29,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784007053] [2024-11-08 14:26:29,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:26:29,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:26:29,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:26:29,745 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 14:26:29,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:26:29,757 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-08 14:26:29,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:26:29,765 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-08 14:26:29,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:26:29,772 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-08 14:26:29,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:26:29,810 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-08 14:26:29,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:26:29,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784007053] [2024-11-08 14:26:29,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784007053] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 14:26:29,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 14:26:29,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 14:26:29,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607984858] [2024-11-08 14:26:29,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 14:26:29,811 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 14:26:29,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:26:29,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 14:26:29,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-08 14:26:29,812 INFO L87 Difference]: Start difference. First operand 31 states and 40 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-08 14:26:29,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:26:29,921 INFO L93 Difference]: Finished difference Result 50 states and 65 transitions. [2024-11-08 14:26:29,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 14:26:29,921 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 30 [2024-11-08 14:26:29,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:26:29,923 INFO L225 Difference]: With dead ends: 50 [2024-11-08 14:26:29,923 INFO L226 Difference]: Without dead ends: 43 [2024-11-08 14:26:29,924 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-08 14:26:29,924 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 28 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 14:26:29,925 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 102 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 14:26:29,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-11-08 14:26:29,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 33. [2024-11-08 14:26:29,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 22 states have internal predecessors, (25), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-08 14:26:29,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 42 transitions. [2024-11-08 14:26:29,937 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 42 transitions. Word has length 30 [2024-11-08 14:26:29,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:26:29,937 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 42 transitions. [2024-11-08 14:26:29,937 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-08 14:26:29,938 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 42 transitions. [2024-11-08 14:26:29,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-08 14:26:29,939 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:26:29,940 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:26:29,940 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 14:26:29,940 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:26:29,940 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:26:29,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1825736765, now seen corresponding path program 1 times [2024-11-08 14:26:29,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:26:29,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845412240] [2024-11-08 14:26:29,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:26:29,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:26:29,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-08 14:26:29,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [962514241] [2024-11-08 14:26:29,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:26:29,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:26:29,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:26:29,981 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 14:26:29,982 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 14:26:30,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:26:30,035 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-08 14:26:30,042 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:26:30,188 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-08 14:26:30,189 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 14:26:30,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:26:30,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845412240] [2024-11-08 14:26:30,190 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-08 14:26:30,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [962514241] [2024-11-08 14:26:30,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [962514241] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 14:26:30,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 14:26:30,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 14:26:30,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643173242] [2024-11-08 14:26:30,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 14:26:30,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 14:26:30,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:26:30,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 14:26:30,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 14:26:30,195 INFO L87 Difference]: Start difference. First operand 33 states and 42 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-08 14:26:30,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:26:30,253 INFO L93 Difference]: Finished difference Result 49 states and 63 transitions. [2024-11-08 14:26:30,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 14:26:30,256 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 33 [2024-11-08 14:26:30,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:26:30,256 INFO L225 Difference]: With dead ends: 49 [2024-11-08 14:26:30,257 INFO L226 Difference]: Without dead ends: 47 [2024-11-08 14:26:30,257 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-08 14:26:30,258 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 7 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 134 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 [2024-11-08 14:26:30,258 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 134 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 14:26:30,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-11-08 14:26:30,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2024-11-08 14:26:30,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 29 states have (on average 1.206896551724138) internal successors, (35), 30 states have internal predecessors, (35), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-08 14:26:30,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 60 transitions. [2024-11-08 14:26:30,269 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 60 transitions. Word has length 33 [2024-11-08 14:26:30,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:26:30,269 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 60 transitions. [2024-11-08 14:26:30,269 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-08 14:26:30,269 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 60 transitions. [2024-11-08 14:26:30,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-08 14:26:30,270 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:26:30,270 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:26:30,285 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-08 14:26:30,471 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:26:30,472 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:26:30,473 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:26:30,473 INFO L85 PathProgramCache]: Analyzing trace with hash -1547103247, now seen corresponding path program 1 times [2024-11-08 14:26:30,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:26:30,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2541492] [2024-11-08 14:26:30,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:26:30,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:26:30,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:26:30,621 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 14:26:30,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:26:30,627 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-08 14:26:30,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:26:30,630 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-08 14:26:30,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:26:30,660 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-08 14:26:30,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:26:30,667 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-08 14:26:30,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:26:30,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2541492] [2024-11-08 14:26:30,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2541492] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 14:26:30,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [262474541] [2024-11-08 14:26:30,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:26:30,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:26:30,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:26:30,670 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 14:26:30,671 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 14:26:30,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:26:30,739 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-08 14:26:30,740 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:26:30,797 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-08 14:26:30,800 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:26:30,948 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-08 14:26:30,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [262474541] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 14:26:30,948 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 14:26:30,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 12 [2024-11-08 14:26:30,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401866161] [2024-11-08 14:26:30,948 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 14:26:30,949 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-08 14:26:30,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:26:30,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-08 14:26:30,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-11-08 14:26:30,949 INFO L87 Difference]: Start difference. First operand 46 states and 60 transitions. Second operand has 12 states, 12 states have (on average 2.5) internal successors, (30), 11 states have internal predecessors, (30), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-08 14:26:31,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:26:31,112 INFO L93 Difference]: Finished difference Result 99 states and 139 transitions. [2024-11-08 14:26:31,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-08 14:26:31,113 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 11 states have internal predecessors, (30), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 35 [2024-11-08 14:26:31,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:26:31,114 INFO L225 Difference]: With dead ends: 99 [2024-11-08 14:26:31,114 INFO L226 Difference]: Without dead ends: 92 [2024-11-08 14:26:31,114 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 69 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2024-11-08 14:26:31,115 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 67 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 14:26:31,115 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 234 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 14:26:31,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2024-11-08 14:26:31,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 67. [2024-11-08 14:26:31,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 46 states have (on average 1.2608695652173914) internal successors, (58), 47 states have internal predecessors, (58), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-08 14:26:31,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 91 transitions. [2024-11-08 14:26:31,133 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 91 transitions. Word has length 35 [2024-11-08 14:26:31,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:26:31,133 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 91 transitions. [2024-11-08 14:26:31,134 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 11 states have internal predecessors, (30), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-08 14:26:31,134 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 91 transitions. [2024-11-08 14:26:31,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-08 14:26:31,138 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:26:31,138 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:26:31,150 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-08 14:26:31,339 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-08 14:26:31,339 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:26:31,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:26:31,339 INFO L85 PathProgramCache]: Analyzing trace with hash -720434099, now seen corresponding path program 1 times [2024-11-08 14:26:31,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:26:31,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438714604] [2024-11-08 14:26:31,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:26:31,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:26:31,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-08 14:26:31,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1577982226] [2024-11-08 14:26:31,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:26:31,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:26:31,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:26:31,352 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 14:26:31,353 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 14:26:31,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:26:31,396 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-08 14:26:31,399 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:26:31,483 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-08 14:26:31,483 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 14:26:31,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:26:31,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438714604] [2024-11-08 14:26:31,484 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-08 14:26:31,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1577982226] [2024-11-08 14:26:31,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1577982226] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 14:26:31,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 14:26:31,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 14:26:31,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302650014] [2024-11-08 14:26:31,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 14:26:31,485 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 14:26:31,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:26:31,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 14:26:31,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 14:26:31,485 INFO L87 Difference]: Start difference. First operand 67 states and 91 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-08 14:26:31,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:26:31,520 INFO L93 Difference]: Finished difference Result 75 states and 98 transitions. [2024-11-08 14:26:31,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 14:26:31,521 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 38 [2024-11-08 14:26:31,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:26:31,522 INFO L225 Difference]: With dead ends: 75 [2024-11-08 14:26:31,522 INFO L226 Difference]: Without dead ends: 73 [2024-11-08 14:26:31,522 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-08 14:26:31,523 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 7 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 131 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 [2024-11-08 14:26:31,523 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 131 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 14:26:31,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-11-08 14:26:31,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 71. [2024-11-08 14:26:31,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 49 states have (on average 1.2448979591836735) internal successors, (61), 50 states have internal predecessors, (61), 17 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-08 14:26:31,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 94 transitions. [2024-11-08 14:26:31,532 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 94 transitions. Word has length 38 [2024-11-08 14:26:31,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:26:31,532 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 94 transitions. [2024-11-08 14:26:31,532 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-08 14:26:31,532 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 94 transitions. [2024-11-08 14:26:31,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-08 14:26:31,533 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:26:31,533 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:26:31,545 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-08 14:26:31,736 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:26:31,737 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:26:31,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:26:31,737 INFO L85 PathProgramCache]: Analyzing trace with hash -376152117, now seen corresponding path program 1 times [2024-11-08 14:26:31,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:26:31,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110622581] [2024-11-08 14:26:31,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:26:31,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:26:31,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-08 14:26:31,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [743899604] [2024-11-08 14:26:31,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:26:31,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:26:31,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:26:31,750 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 14:26:31,751 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 14:26:31,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:26:31,787 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-08 14:26:31,788 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:26:31,877 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-08 14:26:31,878 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:26:31,945 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-08 14:26:31,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:26:31,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110622581] [2024-11-08 14:26:31,945 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-08 14:26:31,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [743899604] [2024-11-08 14:26:31,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [743899604] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 14:26:31,946 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-08 14:26:31,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 9 [2024-11-08 14:26:31,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254673164] [2024-11-08 14:26:31,946 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-08 14:26:31,946 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-08 14:26:31,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:26:31,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-08 14:26:31,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-08 14:26:31,947 INFO L87 Difference]: Start difference. First operand 71 states and 94 transitions. Second operand has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 8 states have internal predecessors, (31), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-08 14:26:32,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:26:32,118 INFO L93 Difference]: Finished difference Result 107 states and 143 transitions. [2024-11-08 14:26:32,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 14:26:32,118 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 8 states have internal predecessors, (31), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 38 [2024-11-08 14:26:32,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:26:32,119 INFO L225 Difference]: With dead ends: 107 [2024-11-08 14:26:32,119 INFO L226 Difference]: Without dead ends: 105 [2024-11-08 14:26:32,120 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 65 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-08 14:26:32,120 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 30 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 14:26:32,121 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 235 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 14:26:32,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2024-11-08 14:26:32,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 101. [2024-11-08 14:26:32,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 70 states have (on average 1.2571428571428571) internal successors, (88), 71 states have internal predecessors, (88), 25 states have call successors, (25), 5 states have call predecessors, (25), 5 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-08 14:26:32,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 137 transitions. [2024-11-08 14:26:32,144 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 137 transitions. Word has length 38 [2024-11-08 14:26:32,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:26:32,144 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 137 transitions. [2024-11-08 14:26:32,145 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 8 states have internal predecessors, (31), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-08 14:26:32,145 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 137 transitions. [2024-11-08 14:26:32,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-08 14:26:32,146 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:26:32,146 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:26:32,170 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-08 14:26:32,346 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:26:32,347 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:26:32,347 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:26:32,347 INFO L85 PathProgramCache]: Analyzing trace with hash 279172547, now seen corresponding path program 1 times [2024-11-08 14:26:32,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:26:32,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272055340] [2024-11-08 14:26:32,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:26:32,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:26:32,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-08 14:26:32,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1777577048] [2024-11-08 14:26:32,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:26:32,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:26:32,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:26:32,366 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) [2024-11-08 14:26:32,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 14:26:32,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:26:32,415 INFO L255 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-08 14:26:32,416 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:26:32,468 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-08 14:26:32,468 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 14:26:32,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:26:32,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272055340] [2024-11-08 14:26:32,469 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-08 14:26:32,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1777577048] [2024-11-08 14:26:32,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1777577048] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 14:26:32,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 14:26:32,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 14:26:32,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356765589] [2024-11-08 14:26:32,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 14:26:32,471 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 14:26:32,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:26:32,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 14:26:32,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 14:26:32,474 INFO L87 Difference]: Start difference. First operand 101 states and 137 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-08 14:26:32,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:26:32,548 INFO L93 Difference]: Finished difference Result 147 states and 209 transitions. [2024-11-08 14:26:32,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 14:26:32,548 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 43 [2024-11-08 14:26:32,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:26:32,550 INFO L225 Difference]: With dead ends: 147 [2024-11-08 14:26:32,550 INFO L226 Difference]: Without dead ends: 145 [2024-11-08 14:26:32,550 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-08 14:26:32,551 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 6 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 14:26:32,551 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 124 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 14:26:32,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2024-11-08 14:26:32,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 139. [2024-11-08 14:26:32,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 87 states have (on average 1.2873563218390804) internal successors, (112), 88 states have internal predecessors, (112), 45 states have call successors, (45), 6 states have call predecessors, (45), 6 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2024-11-08 14:26:32,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 201 transitions. [2024-11-08 14:26:32,576 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 201 transitions. Word has length 43 [2024-11-08 14:26:32,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:26:32,576 INFO L471 AbstractCegarLoop]: Abstraction has 139 states and 201 transitions. [2024-11-08 14:26:32,577 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-08 14:26:32,577 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 201 transitions. [2024-11-08 14:26:32,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-08 14:26:32,577 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:26:32,578 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:26:32,591 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-08 14:26:32,778 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:26:32,779 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:26:32,779 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:26:32,779 INFO L85 PathProgramCache]: Analyzing trace with hash -2141198011, now seen corresponding path program 1 times [2024-11-08 14:26:32,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:26:32,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019125109] [2024-11-08 14:26:32,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:26:32,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:26:32,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-08 14:26:32,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [342269851] [2024-11-08 14:26:32,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:26:32,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:26:32,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:26:32,794 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) [2024-11-08 14:26:32,795 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 14:26:32,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:26:32,838 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-08 14:26:32,840 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:26:32,960 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-08 14:26:32,960 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:26:33,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:26:33,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019125109] [2024-11-08 14:26:33,003 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-08 14:26:33,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [342269851] [2024-11-08 14:26:33,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [342269851] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 14:26:33,003 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-08 14:26:33,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2024-11-08 14:26:33,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506730055] [2024-11-08 14:26:33,003 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-08 14:26:33,004 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 14:26:33,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:26:33,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 14:26:33,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-08 14:26:33,004 INFO L87 Difference]: Start difference. First operand 139 states and 201 transitions. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-08 14:26:33,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:26:33,121 INFO L93 Difference]: Finished difference Result 152 states and 212 transitions. [2024-11-08 14:26:33,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 14:26:33,122 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 43 [2024-11-08 14:26:33,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:26:33,123 INFO L225 Difference]: With dead ends: 152 [2024-11-08 14:26:33,123 INFO L226 Difference]: Without dead ends: 150 [2024-11-08 14:26:33,124 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 39 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-08 14:26:33,124 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 26 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 14:26:33,125 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 209 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 14:26:33,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2024-11-08 14:26:33,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 147. [2024-11-08 14:26:33,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 93 states have (on average 1.2688172043010753) internal successors, (118), 94 states have internal predecessors, (118), 45 states have call successors, (45), 8 states have call predecessors, (45), 8 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2024-11-08 14:26:33,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 207 transitions. [2024-11-08 14:26:33,147 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 207 transitions. Word has length 43 [2024-11-08 14:26:33,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:26:33,147 INFO L471 AbstractCegarLoop]: Abstraction has 147 states and 207 transitions. [2024-11-08 14:26:33,148 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-08 14:26:33,148 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 207 transitions. [2024-11-08 14:26:33,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-08 14:26:33,149 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:26:33,149 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:26:33,163 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-08 14:26:33,349 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:26:33,350 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:26:33,350 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:26:33,350 INFO L85 PathProgramCache]: Analyzing trace with hash -1796916029, now seen corresponding path program 2 times [2024-11-08 14:26:33,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:26:33,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217809026] [2024-11-08 14:26:33,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:26:33,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:26:33,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:26:33,392 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 14:26:33,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:26:33,394 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-08 14:26:33,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:26:33,395 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-08 14:26:33,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:26:33,397 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-08 14:26:33,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:26:33,398 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-08 14:26:33,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:26:33,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217809026] [2024-11-08 14:26:33,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217809026] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 14:26:33,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 14:26:33,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 14:26:33,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710935464] [2024-11-08 14:26:33,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 14:26:33,399 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 14:26:33,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:26:33,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 14:26:33,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 14:26:33,399 INFO L87 Difference]: Start difference. First operand 147 states and 207 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-08 14:26:33,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:26:33,470 INFO L93 Difference]: Finished difference Result 186 states and 259 transitions. [2024-11-08 14:26:33,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 14:26:33,470 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 43 [2024-11-08 14:26:33,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:26:33,471 INFO L225 Difference]: With dead ends: 186 [2024-11-08 14:26:33,471 INFO L226 Difference]: Without dead ends: 130 [2024-11-08 14:26:33,472 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-08 14:26:33,472 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 18 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 14:26:33,472 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 160 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 14:26:33,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2024-11-08 14:26:33,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 122. [2024-11-08 14:26:33,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 76 states have (on average 1.2105263157894737) internal successors, (92), 77 states have internal predecessors, (92), 37 states have call successors, (37), 8 states have call predecessors, (37), 8 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-11-08 14:26:33,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 165 transitions. [2024-11-08 14:26:33,507 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 165 transitions. Word has length 43 [2024-11-08 14:26:33,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:26:33,507 INFO L471 AbstractCegarLoop]: Abstraction has 122 states and 165 transitions. [2024-11-08 14:26:33,507 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-08 14:26:33,507 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 165 transitions. [2024-11-08 14:26:33,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-08 14:26:33,508 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:26:33,508 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:26:33,508 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-08 14:26:33,508 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:26:33,508 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:26:33,509 INFO L85 PathProgramCache]: Analyzing trace with hash -1189241395, now seen corresponding path program 1 times [2024-11-08 14:26:33,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:26:33,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642415169] [2024-11-08 14:26:33,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:26:33,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:26:33,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-08 14:26:33,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1311481761] [2024-11-08 14:26:33,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:26:33,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:26:33,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:26:33,522 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) [2024-11-08 14:26:33,523 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-08 14:26:33,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:26:33,562 INFO L255 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-08 14:26:33,564 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:26:33,593 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-08 14:26:33,593 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 14:26:33,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:26:33,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642415169] [2024-11-08 14:26:33,594 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-08 14:26:33,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1311481761] [2024-11-08 14:26:33,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1311481761] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 14:26:33,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 14:26:33,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 14:26:33,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858471876] [2024-11-08 14:26:33,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 14:26:33,595 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 14:26:33,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:26:33,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 14:26:33,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 14:26:33,595 INFO L87 Difference]: Start difference. First operand 122 states and 165 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-08 14:26:33,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:26:33,646 INFO L93 Difference]: Finished difference Result 180 states and 262 transitions. [2024-11-08 14:26:33,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 14:26:33,647 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 48 [2024-11-08 14:26:33,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:26:33,648 INFO L225 Difference]: With dead ends: 180 [2024-11-08 14:26:33,648 INFO L226 Difference]: Without dead ends: 178 [2024-11-08 14:26:33,648 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-08 14:26:33,649 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 4 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 14:26:33,649 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 132 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 14:26:33,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2024-11-08 14:26:33,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 166. [2024-11-08 14:26:33,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 87 states have (on average 1.1839080459770115) internal successors, (103), 96 states have internal predecessors, (103), 69 states have call successors, (69), 9 states have call predecessors, (69), 9 states have return successors, (68), 60 states have call predecessors, (68), 68 states have call successors, (68) [2024-11-08 14:26:33,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 240 transitions. [2024-11-08 14:26:33,673 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 240 transitions. Word has length 48 [2024-11-08 14:26:33,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:26:33,673 INFO L471 AbstractCegarLoop]: Abstraction has 166 states and 240 transitions. [2024-11-08 14:26:33,673 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-08 14:26:33,673 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 240 transitions. [2024-11-08 14:26:33,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-08 14:26:33,674 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:26:33,674 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:26:33,687 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-08 14:26:33,874 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:26:33,874 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:26:33,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:26:33,876 INFO L85 PathProgramCache]: Analyzing trace with hash -828341661, now seen corresponding path program 1 times [2024-11-08 14:26:33,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:26:33,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449503122] [2024-11-08 14:26:33,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:26:33,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:26:33,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-08 14:26:33,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1603145303] [2024-11-08 14:26:33,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:26:33,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:26:33,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:26:33,892 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) [2024-11-08 14:26:33,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-08 14:26:33,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:26:33,935 INFO L255 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-11-08 14:26:33,937 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:26:34,496 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 14 proven. 7 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-11-08 14:26:34,497 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:26:35,720 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-08 14:26:35,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:26:35,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449503122] [2024-11-08 14:26:35,720 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-08 14:26:35,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1603145303] [2024-11-08 14:26:35,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1603145303] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 14:26:35,721 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-08 14:26:35,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11] total 23 [2024-11-08 14:26:35,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071729121] [2024-11-08 14:26:35,721 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-08 14:26:35,721 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-08 14:26:35,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:26:35,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-08 14:26:35,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=429, Unknown=0, NotChecked=0, Total=506 [2024-11-08 14:26:35,722 INFO L87 Difference]: Start difference. First operand 166 states and 240 transitions. Second operand has 23 states, 21 states have (on average 2.0476190476190474) internal successors, (43), 20 states have internal predecessors, (43), 6 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2024-11-08 14:26:38,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:26:38,858 INFO L93 Difference]: Finished difference Result 445 states and 665 transitions. [2024-11-08 14:26:38,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-08 14:26:38,858 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 2.0476190476190474) internal successors, (43), 20 states have internal predecessors, (43), 6 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) Word has length 60 [2024-11-08 14:26:38,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:26:38,866 INFO L225 Difference]: With dead ends: 445 [2024-11-08 14:26:38,866 INFO L226 Difference]: Without dead ends: 342 [2024-11-08 14:26:38,867 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 429 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=398, Invalid=1672, Unknown=0, NotChecked=0, Total=2070 [2024-11-08 14:26:38,868 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 167 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 593 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 391 SdHoareTripleChecker+Invalid, 741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-08 14:26:38,868 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 391 Invalid, 741 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 593 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-08 14:26:38,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2024-11-08 14:26:38,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 256. [2024-11-08 14:26:38,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 150 states have (on average 1.2066666666666668) internal successors, (181), 157 states have internal predecessors, (181), 93 states have call successors, (93), 12 states have call predecessors, (93), 12 states have return successors, (92), 86 states have call predecessors, (92), 92 states have call successors, (92) [2024-11-08 14:26:38,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 366 transitions. [2024-11-08 14:26:38,938 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 366 transitions. Word has length 60 [2024-11-08 14:26:38,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:26:38,939 INFO L471 AbstractCegarLoop]: Abstraction has 256 states and 366 transitions. [2024-11-08 14:26:38,940 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 2.0476190476190474) internal successors, (43), 20 states have internal predecessors, (43), 6 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2024-11-08 14:26:38,940 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 366 transitions. [2024-11-08 14:26:38,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-08 14:26:38,941 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:26:38,942 INFO L215 NwaCegarLoop]: trace histogram [8, 7, 7, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:26:38,957 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-08 14:26:39,145 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,SelfDestructingSolverStorable10 [2024-11-08 14:26:39,146 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:26:39,146 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:26:39,146 INFO L85 PathProgramCache]: Analyzing trace with hash 1607561902, now seen corresponding path program 1 times [2024-11-08 14:26:39,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:26:39,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353051601] [2024-11-08 14:26:39,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:26:39,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:26:39,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-08 14:26:39,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1413494120] [2024-11-08 14:26:39,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:26:39,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:26:39,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:26:39,172 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) [2024-11-08 14:26:39,177 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-08 14:26:39,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:26:39,225 INFO L255 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-08 14:26:39,227 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:26:39,305 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 14 proven. 5 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2024-11-08 14:26:39,306 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:26:39,390 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2024-11-08 14:26:39,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:26:39,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353051601] [2024-11-08 14:26:39,390 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-08 14:26:39,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1413494120] [2024-11-08 14:26:39,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1413494120] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-08 14:26:39,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 14:26:39,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2024-11-08 14:26:39,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071127335] [2024-11-08 14:26:39,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 14:26:39,392 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 14:26:39,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:26:39,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 14:26:39,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-08 14:26:39,392 INFO L87 Difference]: Start difference. First operand 256 states and 366 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-08 14:26:39,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:26:39,503 INFO L93 Difference]: Finished difference Result 262 states and 371 transitions. [2024-11-08 14:26:39,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 14:26:39,503 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 70 [2024-11-08 14:26:39,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:26:39,505 INFO L225 Difference]: With dead ends: 262 [2024-11-08 14:26:39,505 INFO L226 Difference]: Without dead ends: 260 [2024-11-08 14:26:39,505 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 131 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-08 14:26:39,506 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 4 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 14:26:39,506 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 127 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 14:26:39,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2024-11-08 14:26:39,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 260. [2024-11-08 14:26:39,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 153 states have (on average 1.2026143790849673) internal successors, (184), 160 states have internal predecessors, (184), 93 states have call successors, (93), 13 states have call predecessors, (93), 13 states have return successors, (92), 86 states have call predecessors, (92), 92 states have call successors, (92) [2024-11-08 14:26:39,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 369 transitions. [2024-11-08 14:26:39,582 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 369 transitions. Word has length 70 [2024-11-08 14:26:39,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:26:39,582 INFO L471 AbstractCegarLoop]: Abstraction has 260 states and 369 transitions. [2024-11-08 14:26:39,582 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-08 14:26:39,582 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 369 transitions. [2024-11-08 14:26:39,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-08 14:26:39,583 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:26:39,583 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:26:39,598 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-08 14:26:39,789 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:26:39,790 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:26:39,790 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:26:39,790 INFO L85 PathProgramCache]: Analyzing trace with hash -1439093215, now seen corresponding path program 1 times [2024-11-08 14:26:39,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:26:39,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895630439] [2024-11-08 14:26:39,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:26:39,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:26:39,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-08 14:26:39,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [325625984] [2024-11-08 14:26:39,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:26:39,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:26:39,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:26:39,807 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) [2024-11-08 14:26:39,812 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-08 14:26:39,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:26:39,857 INFO L255 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-08 14:26:39,858 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:26:40,326 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 16 proven. 31 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-08 14:26:40,326 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:26:40,519 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 25 proven. 9 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-11-08 14:26:40,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:26:40,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895630439] [2024-11-08 14:26:40,519 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-08 14:26:40,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [325625984] [2024-11-08 14:26:40,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [325625984] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 14:26:40,519 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-08 14:26:40,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 8] total 22 [2024-11-08 14:26:40,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542335450] [2024-11-08 14:26:40,520 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-08 14:26:40,520 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-08 14:26:40,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:26:40,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-08 14:26:40,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=395, Unknown=0, NotChecked=0, Total=462 [2024-11-08 14:26:40,521 INFO L87 Difference]: Start difference. First operand 260 states and 369 transitions. Second operand has 22 states, 22 states have (on average 2.772727272727273) internal successors, (61), 19 states have internal predecessors, (61), 6 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2024-11-08 14:26:43,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:26:43,407 INFO L93 Difference]: Finished difference Result 322 states and 459 transitions. [2024-11-08 14:26:43,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-08 14:26:43,407 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.772727272727273) internal successors, (61), 19 states have internal predecessors, (61), 6 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) Word has length 68 [2024-11-08 14:26:43,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:26:43,409 INFO L225 Difference]: With dead ends: 322 [2024-11-08 14:26:43,409 INFO L226 Difference]: Without dead ends: 320 [2024-11-08 14:26:43,410 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=190, Invalid=932, Unknown=0, NotChecked=0, Total=1122 [2024-11-08 14:26:43,410 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 114 mSDsluCounter, 524 mSDsCounter, 0 mSdLazyCounter, 628 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 576 SdHoareTripleChecker+Invalid, 719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-08 14:26:43,410 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 576 Invalid, 719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 628 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-08 14:26:43,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2024-11-08 14:26:43,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 268. [2024-11-08 14:26:43,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 159 states have (on average 1.1949685534591195) internal successors, (190), 166 states have internal predecessors, (190), 93 states have call successors, (93), 15 states have call predecessors, (93), 15 states have return successors, (92), 86 states have call predecessors, (92), 92 states have call successors, (92) [2024-11-08 14:26:43,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 375 transitions. [2024-11-08 14:26:43,479 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 375 transitions. Word has length 68 [2024-11-08 14:26:43,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:26:43,479 INFO L471 AbstractCegarLoop]: Abstraction has 268 states and 375 transitions. [2024-11-08 14:26:43,480 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.772727272727273) internal successors, (61), 19 states have internal predecessors, (61), 6 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2024-11-08 14:26:43,480 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 375 transitions. [2024-11-08 14:26:43,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-08 14:26:43,480 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:26:43,480 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:26:43,496 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-08 14:26:43,681 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,SelfDestructingSolverStorable12 [2024-11-08 14:26:43,681 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:26:43,681 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:26:43,681 INFO L85 PathProgramCache]: Analyzing trace with hash 798002477, now seen corresponding path program 2 times [2024-11-08 14:26:43,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:26:43,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757922003] [2024-11-08 14:26:43,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:26:43,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:26:43,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:26:43,739 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 14:26:43,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:26:43,741 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-08 14:26:43,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:26:43,743 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-08 14:26:43,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:26:43,744 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-08 14:26:43,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:26:43,745 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-11-08 14:26:43,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:26:43,748 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-08 14:26:43,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:26:43,750 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-08 14:26:43,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:26:43,752 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-11-08 14:26:43,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:26:43,755 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-11-08 14:26:43,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:26:43,757 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-11-08 14:26:43,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:26:43,759 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2024-11-08 14:26:43,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:26:43,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757922003] [2024-11-08 14:26:43,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757922003] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 14:26:43,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 14:26:43,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 14:26:43,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008462420] [2024-11-08 14:26:43,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 14:26:43,759 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 14:26:43,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:26:43,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 14:26:43,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 14:26:43,760 INFO L87 Difference]: Start difference. First operand 268 states and 375 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-08 14:26:43,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:26:43,902 INFO L93 Difference]: Finished difference Result 459 states and 645 transitions. [2024-11-08 14:26:43,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 14:26:43,903 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 73 [2024-11-08 14:26:43,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:26:43,905 INFO L225 Difference]: With dead ends: 459 [2024-11-08 14:26:43,905 INFO L226 Difference]: Without dead ends: 289 [2024-11-08 14:26:43,905 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-08 14:26:43,906 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 1 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 14:26:43,906 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 121 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 14:26:43,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2024-11-08 14:26:43,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 277. [2024-11-08 14:26:43,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 168 states have (on average 1.1964285714285714) internal successors, (201), 169 states have internal predecessors, (201), 93 states have call successors, (93), 15 states have call predecessors, (93), 15 states have return successors, (92), 92 states have call predecessors, (92), 92 states have call successors, (92) [2024-11-08 14:26:43,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 386 transitions. [2024-11-08 14:26:43,978 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 386 transitions. Word has length 73 [2024-11-08 14:26:43,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:26:43,979 INFO L471 AbstractCegarLoop]: Abstraction has 277 states and 386 transitions. [2024-11-08 14:26:43,979 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-08 14:26:43,979 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 386 transitions. [2024-11-08 14:26:43,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-08 14:26:43,979 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:26:43,980 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:26:43,980 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-08 14:26:43,980 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:26:43,980 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:26:43,980 INFO L85 PathProgramCache]: Analyzing trace with hash -1622368081, now seen corresponding path program 3 times [2024-11-08 14:26:43,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:26:43,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641538978] [2024-11-08 14:26:43,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:26:43,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:26:43,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-08 14:26:43,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1352916114] [2024-11-08 14:26:43,998 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 14:26:43,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:26:43,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:26:43,999 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) [2024-11-08 14:26:44,001 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-08 14:26:44,046 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-08 14:26:44,046 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 14:26:44,053 INFO L255 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 69 conjuncts are in the unsatisfiable core [2024-11-08 14:26:44,055 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:26:44,840 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 27 proven. 26 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-11-08 14:26:44,840 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:26:49,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:26:49,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641538978] [2024-11-08 14:26:49,982 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-08 14:26:49,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1352916114] [2024-11-08 14:26:49,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1352916114] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 14:26:49,982 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-08 14:26:49,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2024-11-08 14:26:49,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046803526] [2024-11-08 14:26:49,982 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-08 14:26:49,982 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-08 14:26:49,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:26:49,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-08 14:26:49,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=631, Unknown=1, NotChecked=0, Total=756 [2024-11-08 14:26:49,983 INFO L87 Difference]: Start difference. First operand 277 states and 386 transitions. Second operand has 19 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 16 states have internal predecessors, (39), 5 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2024-11-08 14:26:50,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:26:50,750 INFO L93 Difference]: Finished difference Result 344 states and 469 transitions. [2024-11-08 14:26:50,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-08 14:26:50,751 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 16 states have internal predecessors, (39), 5 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 73 [2024-11-08 14:26:50,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:26:50,756 INFO L225 Difference]: With dead ends: 344 [2024-11-08 14:26:50,756 INFO L226 Difference]: Without dead ends: 342 [2024-11-08 14:26:50,757 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 65 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=204, Invalid=985, Unknown=1, NotChecked=0, Total=1190 [2024-11-08 14:26:50,757 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 63 mSDsluCounter, 391 mSDsCounter, 0 mSdLazyCounter, 611 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-08 14:26:50,757 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 429 Invalid, 659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 611 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-08 14:26:50,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2024-11-08 14:26:50,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 332. [2024-11-08 14:26:50,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 202 states have (on average 1.188118811881188) internal successors, (240), 203 states have internal predecessors, (240), 109 states have call successors, (109), 20 states have call predecessors, (109), 20 states have return successors, (108), 108 states have call predecessors, (108), 108 states have call successors, (108) [2024-11-08 14:26:50,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 457 transitions. [2024-11-08 14:26:50,861 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 457 transitions. Word has length 73 [2024-11-08 14:26:50,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:26:50,861 INFO L471 AbstractCegarLoop]: Abstraction has 332 states and 457 transitions. [2024-11-08 14:26:50,861 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 16 states have internal predecessors, (39), 5 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2024-11-08 14:26:50,861 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 457 transitions. [2024-11-08 14:26:50,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-08 14:26:50,862 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:26:50,862 INFO L215 NwaCegarLoop]: trace histogram [9, 8, 8, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:26:50,874 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-08 14:26:51,066 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 [2024-11-08 14:26:51,067 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:26:51,067 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:26:51,067 INFO L85 PathProgramCache]: Analyzing trace with hash 160585404, now seen corresponding path program 1 times [2024-11-08 14:26:51,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:26:51,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965406959] [2024-11-08 14:26:51,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:26:51,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:26:51,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-08 14:26:51,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1927124260] [2024-11-08 14:26:51,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:26:51,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:26:51,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:26:51,085 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 14:26:51,086 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-08 14:26:51,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:26:51,138 INFO L255 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 68 conjuncts are in the unsatisfiable core [2024-11-08 14:26:51,140 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:26:52,151 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 36 proven. 29 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2024-11-08 14:26:52,151 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:26:56,931 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 30 proven. 26 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2024-11-08 14:26:56,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:26:56,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965406959] [2024-11-08 14:26:56,931 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-08 14:26:56,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1927124260] [2024-11-08 14:26:56,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1927124260] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 14:26:56,932 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-08 14:26:56,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 17] total 35 [2024-11-08 14:26:56,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331306668] [2024-11-08 14:26:56,932 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-08 14:26:56,932 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-08 14:26:56,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:26:56,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-08 14:26:56,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=1036, Unknown=0, NotChecked=0, Total=1190 [2024-11-08 14:26:56,933 INFO L87 Difference]: Start difference. First operand 332 states and 457 transitions. Second operand has 35 states, 33 states have (on average 1.878787878787879) internal successors, (62), 33 states have internal predecessors, (62), 10 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (22), 8 states have call predecessors, (22), 8 states have call successors, (22) [2024-11-08 14:27:31,249 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-11-08 14:27:33,723 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-11-08 14:27:37,549 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.99s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-11-08 14:27:38,780 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-11-08 14:27:49,191 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.46s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-11-08 14:27:54,110 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.99s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-11-08 14:27:58,976 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-11-08 14:28:03,520 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-11-08 14:28:06,085 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-11-08 14:28:09,473 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.39s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1]