./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-invgen/fragtest_simple.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 023d838f 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/loop-invgen/fragtest_simple.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash be3b53cc5f9badbf5402cafcfa5766831674eb009261bc7c1bcbe9580aece38e --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-09 22:16:44,729 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 22:16:44,815 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 22:16:44,822 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 22:16:44,823 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 22:16:44,851 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 22:16:44,851 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 22:16:44,851 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 22:16:44,852 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 22:16:44,857 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 22:16:44,857 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 22:16:44,857 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 22:16:44,858 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 22:16:44,858 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 22:16:44,858 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 22:16:44,859 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 22:16:44,859 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 22:16:44,859 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 22:16:44,859 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 22:16:44,860 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 22:16:44,860 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 22:16:44,862 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 22:16:44,863 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 22:16:44,863 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 22:16:44,863 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 22:16:44,863 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 22:16:44,864 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 22:16:44,864 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 22:16:44,864 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-09 22:16:44,864 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 22:16:44,864 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 22:16:44,865 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 22:16:44,865 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 22:16:44,865 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 22:16:44,865 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 22:16:44,865 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 22:16:44,866 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 22:16:44,866 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 22:16:44,866 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 22:16:44,867 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 22:16:44,867 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 22:16:44,867 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 22:16:44,868 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> be3b53cc5f9badbf5402cafcfa5766831674eb009261bc7c1bcbe9580aece38e [2024-11-09 22:16:45,112 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 22:16:45,136 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 22:16:45,138 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 22:16:45,139 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 22:16:45,143 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 22:16:45,144 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-invgen/fragtest_simple.i [2024-11-09 22:16:46,542 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 22:16:46,728 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 22:16:46,729 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/fragtest_simple.i [2024-11-09 22:16:46,738 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cdda95a2d/edfe242cdc65494b8542b92848668312/FLAG7d2a583d6 [2024-11-09 22:16:46,749 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cdda95a2d/edfe242cdc65494b8542b92848668312 [2024-11-09 22:16:46,751 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 22:16:46,752 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 22:16:46,754 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 22:16:46,754 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 22:16:46,758 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 22:16:46,759 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:16:46" (1/1) ... [2024-11-09 22:16:46,759 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a0572dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:16:46, skipping insertion in model container [2024-11-09 22:16:46,759 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:16:46" (1/1) ... [2024-11-09 22:16:46,776 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 22:16:46,943 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/loop-invgen/fragtest_simple.i[893,906] [2024-11-09 22:16:46,963 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 22:16:46,975 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 22:16:46,988 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/loop-invgen/fragtest_simple.i[893,906] [2024-11-09 22:16:46,995 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 22:16:47,008 INFO L204 MainTranslator]: Completed translation [2024-11-09 22:16:47,009 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:16:47 WrapperNode [2024-11-09 22:16:47,009 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 22:16:47,010 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 22:16:47,010 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 22:16:47,011 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 22:16:47,017 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:16:47" (1/1) ... [2024-11-09 22:16:47,022 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:16:47" (1/1) ... [2024-11-09 22:16:47,042 INFO L138 Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 58 [2024-11-09 22:16:47,043 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 22:16:47,043 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 22:16:47,044 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 22:16:47,044 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 22:16:47,055 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:16:47" (1/1) ... [2024-11-09 22:16:47,055 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:16:47" (1/1) ... [2024-11-09 22:16:47,060 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:16:47" (1/1) ... [2024-11-09 22:16:47,079 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]. [2024-11-09 22:16:47,082 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:16:47" (1/1) ... [2024-11-09 22:16:47,082 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:16:47" (1/1) ... [2024-11-09 22:16:47,085 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:16:47" (1/1) ... [2024-11-09 22:16:47,086 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:16:47" (1/1) ... [2024-11-09 22:16:47,087 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:16:47" (1/1) ... [2024-11-09 22:16:47,092 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:16:47" (1/1) ... [2024-11-09 22:16:47,093 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 22:16:47,094 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-09 22:16:47,094 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-09 22:16:47,094 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-09 22:16:47,095 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:16:47" (1/1) ... [2024-11-09 22:16:47,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 22:16:47,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:16:47,148 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) [2024-11-09 22:16:47,156 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 [2024-11-09 22:16:47,224 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 22:16:47,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 22:16:47,224 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 22:16:47,224 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 22:16:47,281 INFO L256 CfgBuilder]: Building ICFG [2024-11-09 22:16:47,283 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 22:16:47,397 INFO L? ?]: Removed 12 outVars from TransFormulas that were not future-live. [2024-11-09 22:16:47,398 INFO L307 CfgBuilder]: Performing block encoding [2024-11-09 22:16:47,421 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 22:16:47,422 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 22:16:47,422 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 10:16:47 BoogieIcfgContainer [2024-11-09 22:16:47,422 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-09 22:16:47,425 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 22:16:47,425 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 22:16:47,430 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 22:16:47,430 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 10:16:46" (1/3) ... [2024-11-09 22:16:47,431 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@382cea30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:16:47, skipping insertion in model container [2024-11-09 22:16:47,431 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:16:47" (2/3) ... [2024-11-09 22:16:47,432 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@382cea30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:16:47, skipping insertion in model container [2024-11-09 22:16:47,435 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 10:16:47" (3/3) ... [2024-11-09 22:16:47,436 INFO L112 eAbstractionObserver]: Analyzing ICFG fragtest_simple.i [2024-11-09 22:16:47,457 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 22:16:47,458 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 22:16:47,507 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 22:16:47,513 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;@cf23a6d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 22:16:47,513 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 22:16:47,517 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 20 states have (on average 1.5) internal successors, (30), 21 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:16:47,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-09 22:16:47,523 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:16:47,524 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:16:47,524 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:16:47,529 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:16:47,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1282989904, now seen corresponding path program 1 times [2024-11-09 22:16:47,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:16:47,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378986376] [2024-11-09 22:16:47,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:16:47,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:16:47,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:47,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:16:47,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:16:47,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378986376] [2024-11-09 22:16:47,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378986376] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 22:16:47,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 22:16:47,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 22:16:47,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586365924] [2024-11-09 22:16:47,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 22:16:47,688 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 22:16:47,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:16:47,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 22:16:47,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 22:16:47,714 INFO L87 Difference]: Start difference. First operand has 22 states, 20 states have (on average 1.5) internal successors, (30), 21 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:16:47,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:16:47,729 INFO L93 Difference]: Finished difference Result 39 states and 53 transitions. [2024-11-09 22:16:47,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 22:16:47,731 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-09 22:16:47,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:16:47,738 INFO L225 Difference]: With dead ends: 39 [2024-11-09 22:16:47,738 INFO L226 Difference]: Without dead ends: 17 [2024-11-09 22:16:47,741 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 22:16:47,745 INFO L432 NwaCegarLoop]: 24 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, 24 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 [2024-11-09 22:16:47,746 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 22:16:47,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2024-11-09 22:16:47,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2024-11-09 22:16:47,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:16:47,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2024-11-09 22:16:47,778 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 12 [2024-11-09 22:16:47,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:16:47,778 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2024-11-09 22:16:47,778 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:16:47,778 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2024-11-09 22:16:47,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-09 22:16:47,780 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:16:47,780 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:16:47,780 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 22:16:47,781 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:16:47,781 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:16:47,781 INFO L85 PathProgramCache]: Analyzing trace with hash 834487697, now seen corresponding path program 1 times [2024-11-09 22:16:47,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:16:47,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528441311] [2024-11-09 22:16:47,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:16:47,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:16:47,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:48,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:16:48,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:16:48,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528441311] [2024-11-09 22:16:48,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528441311] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 22:16:48,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 22:16:48,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 22:16:48,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859085261] [2024-11-09 22:16:48,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 22:16:48,030 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 22:16:48,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:16:48,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 22:16:48,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 22:16:48,033 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:16:48,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:16:48,073 INFO L93 Difference]: Finished difference Result 24 states and 27 transitions. [2024-11-09 22:16:48,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 22:16:48,074 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-09 22:16:48,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:16:48,074 INFO L225 Difference]: With dead ends: 24 [2024-11-09 22:16:48,075 INFO L226 Difference]: Without dead ends: 21 [2024-11-09 22:16:48,075 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 22:16:48,076 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 4 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 22:16:48,077 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 38 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 22:16:48,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-11-09 22:16:48,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2024-11-09 22:16:48,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 19 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:16:48,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2024-11-09 22:16:48,086 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 14 [2024-11-09 22:16:48,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:16:48,086 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2024-11-09 22:16:48,086 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:16:48,087 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2024-11-09 22:16:48,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-09 22:16:48,088 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:16:48,088 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:16:48,088 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 22:16:48,089 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:16:48,089 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:16:48,089 INFO L85 PathProgramCache]: Analyzing trace with hash 1778734745, now seen corresponding path program 1 times [2024-11-09 22:16:48,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:16:48,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543899249] [2024-11-09 22:16:48,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:16:48,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:16:48,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:48,237 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:16:48,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:16:48,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543899249] [2024-11-09 22:16:48,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543899249] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 22:16:48,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 22:16:48,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 22:16:48,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32705060] [2024-11-09 22:16:48,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 22:16:48,238 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 22:16:48,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:16:48,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 22:16:48,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 22:16:48,240 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:16:48,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:16:48,294 INFO L93 Difference]: Finished difference Result 39 states and 45 transitions. [2024-11-09 22:16:48,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 22:16:48,295 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-11-09 22:16:48,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:16:48,296 INFO L225 Difference]: With dead ends: 39 [2024-11-09 22:16:48,297 INFO L226 Difference]: Without dead ends: 25 [2024-11-09 22:16:48,297 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 22:16:48,298 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 6 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 22:16:48,299 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 42 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 22:16:48,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-11-09 22:16:48,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 22. [2024-11-09 22:16:48,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 21 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:16:48,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2024-11-09 22:16:48,307 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 19 [2024-11-09 22:16:48,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:16:48,308 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2024-11-09 22:16:48,308 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:16:48,308 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2024-11-09 22:16:48,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-09 22:16:48,309 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:16:48,309 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:16:48,309 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 22:16:48,309 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:16:48,310 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:16:48,310 INFO L85 PathProgramCache]: Analyzing trace with hash 474298618, now seen corresponding path program 1 times [2024-11-09 22:16:48,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:16:48,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739994324] [2024-11-09 22:16:48,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:16:48,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:16:48,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:48,478 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:16:48,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:16:48,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739994324] [2024-11-09 22:16:48,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739994324] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:16:48,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2087962269] [2024-11-09 22:16:48,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:16:48,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:16:48,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:16:48,482 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) [2024-11-09 22:16:48,484 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 22:16:48,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:48,550 INFO L255 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 22:16:48,555 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:16:48,684 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:16:48,686 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:16:48,762 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:16:48,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2087962269] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:16:48,763 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:16:48,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-11-09 22:16:48,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097124098] [2024-11-09 22:16:48,764 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:16:48,764 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 22:16:48,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:16:48,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 22:16:48,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-11-09 22:16:48,766 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:16:48,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:16:48,961 INFO L93 Difference]: Finished difference Result 50 states and 59 transitions. [2024-11-09 22:16:48,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 22:16:48,962 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-09 22:16:48,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:16:48,963 INFO L225 Difference]: With dead ends: 50 [2024-11-09 22:16:48,963 INFO L226 Difference]: Without dead ends: 36 [2024-11-09 22:16:48,964 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2024-11-09 22:16:48,967 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 24 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 22:16:48,967 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 62 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 22:16:48,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-09 22:16:48,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 29. [2024-11-09 22:16:48,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.1428571428571428) internal successors, (32), 28 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:16:48,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2024-11-09 22:16:48,975 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 21 [2024-11-09 22:16:48,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:16:48,976 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2024-11-09 22:16:48,976 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:16:48,976 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2024-11-09 22:16:48,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-09 22:16:48,977 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:16:48,977 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:16:48,994 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 22:16:49,178 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:16:49,179 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:16:49,179 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:16:49,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1753613489, now seen corresponding path program 2 times [2024-11-09 22:16:49,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:16:49,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098715916] [2024-11-09 22:16:49,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:16:49,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:16:49,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:49,314 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:16:49,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:16:49,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098715916] [2024-11-09 22:16:49,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098715916] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:16:49,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2082108250] [2024-11-09 22:16:49,315 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 22:16:49,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:16:49,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:16:49,319 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) [2024-11-09 22:16:49,321 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 22:16:49,367 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 22:16:49,368 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:16:49,368 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 22:16:49,370 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:16:49,483 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:16:49,484 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:16:49,571 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:16:49,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2082108250] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:16:49,571 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:16:49,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 16 [2024-11-09 22:16:49,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878806837] [2024-11-09 22:16:49,572 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:16:49,572 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-09 22:16:49,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:16:49,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-09 22:16:49,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2024-11-09 22:16:49,574 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand has 16 states, 16 states have (on average 4.0) internal successors, (64), 16 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:16:49,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:16:49,821 INFO L93 Difference]: Finished difference Result 65 states and 76 transitions. [2024-11-09 22:16:49,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-09 22:16:49,822 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.0) internal successors, (64), 16 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2024-11-09 22:16:49,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:16:49,823 INFO L225 Difference]: With dead ends: 65 [2024-11-09 22:16:49,823 INFO L226 Difference]: Without dead ends: 46 [2024-11-09 22:16:49,824 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 48 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=160, Invalid=652, Unknown=0, NotChecked=0, Total=812 [2024-11-09 22:16:49,825 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 32 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 22:16:49,827 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 98 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 22:16:49,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-11-09 22:16:49,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 36. [2024-11-09 22:16:49,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.1142857142857143) internal successors, (39), 35 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:16:49,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2024-11-09 22:16:49,835 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 28 [2024-11-09 22:16:49,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:16:49,835 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2024-11-09 22:16:49,835 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.0) internal successors, (64), 16 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:16:49,836 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2024-11-09 22:16:49,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-09 22:16:49,836 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:16:49,836 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:16:49,851 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-09 22:16:50,037 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:16:50,037 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:16:50,038 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:16:50,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1931095100, now seen corresponding path program 3 times [2024-11-09 22:16:50,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:16:50,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275000849] [2024-11-09 22:16:50,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:16:50,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:16:50,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:50,185 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 16 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:16:50,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:16:50,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275000849] [2024-11-09 22:16:50,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275000849] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:16:50,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1772802413] [2024-11-09 22:16:50,186 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 22:16:50,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:16:50,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:16:50,188 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) [2024-11-09 22:16:50,190 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 22:16:50,242 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-09 22:16:50,242 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:16:50,243 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 22:16:50,244 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:16:50,349 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 12 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:16:50,349 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:16:50,469 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 12 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:16:50,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1772802413] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:16:50,470 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:16:50,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7] total 15 [2024-11-09 22:16:50,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128253529] [2024-11-09 22:16:50,470 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:16:50,470 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 22:16:50,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:16:50,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 22:16:50,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2024-11-09 22:16:50,472 INFO L87 Difference]: Start difference. First operand 36 states and 39 transitions. Second operand has 15 states, 15 states have (on average 4.466666666666667) internal successors, (67), 15 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:16:50,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:16:50,761 INFO L93 Difference]: Finished difference Result 80 states and 93 transitions. [2024-11-09 22:16:50,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-09 22:16:50,762 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.466666666666667) internal successors, (67), 15 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2024-11-09 22:16:50,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:16:50,762 INFO L225 Difference]: With dead ends: 80 [2024-11-09 22:16:50,762 INFO L226 Difference]: Without dead ends: 56 [2024-11-09 22:16:50,763 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 61 SyntacticMatches, 8 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=220, Invalid=836, Unknown=0, NotChecked=0, Total=1056 [2024-11-09 22:16:50,764 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 38 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 22:16:50,764 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 106 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 22:16:50,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-11-09 22:16:50,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 43. [2024-11-09 22:16:50,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 42 states have (on average 1.0952380952380953) internal successors, (46), 42 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:16:50,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 46 transitions. [2024-11-09 22:16:50,770 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 46 transitions. Word has length 35 [2024-11-09 22:16:50,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:16:50,770 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 46 transitions. [2024-11-09 22:16:50,770 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.466666666666667) internal successors, (67), 15 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:16:50,770 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 46 transitions. [2024-11-09 22:16:50,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-09 22:16:50,771 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:16:50,771 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:16:50,789 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-09 22:16:50,975 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:16:50,976 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:16:50,976 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:16:50,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1021184243, now seen corresponding path program 4 times [2024-11-09 22:16:50,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:16:50,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444171379] [2024-11-09 22:16:50,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:16:50,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:16:50,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:51,161 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 30 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:16:51,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:16:51,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444171379] [2024-11-09 22:16:51,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444171379] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:16:51,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2142743430] [2024-11-09 22:16:51,162 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 22:16:51,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:16:51,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:16:51,164 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) [2024-11-09 22:16:51,165 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 22:16:51,212 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 22:16:51,213 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:16:51,213 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 22:16:51,215 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:16:51,326 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 20 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:16:51,326 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:16:51,502 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 20 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:16:51,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2142743430] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:16:51,503 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:16:51,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 8] total 18 [2024-11-09 22:16:51,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196510013] [2024-11-09 22:16:51,503 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:16:51,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-09 22:16:51,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:16:51,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-09 22:16:51,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2024-11-09 22:16:51,505 INFO L87 Difference]: Start difference. First operand 43 states and 46 transitions. Second operand has 18 states, 18 states have (on average 4.5) internal successors, (81), 18 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:16:51,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:16:51,884 INFO L93 Difference]: Finished difference Result 95 states and 110 transitions. [2024-11-09 22:16:51,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-09 22:16:51,885 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.5) internal successors, (81), 18 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2024-11-09 22:16:51,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:16:51,886 INFO L225 Difference]: With dead ends: 95 [2024-11-09 22:16:51,886 INFO L226 Difference]: Without dead ends: 66 [2024-11-09 22:16:51,887 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 73 SyntacticMatches, 10 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 476 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=324, Invalid=1316, Unknown=0, NotChecked=0, Total=1640 [2024-11-09 22:16:51,888 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 70 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 22:16:51,888 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 132 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 22:16:51,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-11-09 22:16:51,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 50. [2024-11-09 22:16:51,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.0816326530612246) internal successors, (53), 49 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:16:51,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 53 transitions. [2024-11-09 22:16:51,894 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 53 transitions. Word has length 42 [2024-11-09 22:16:51,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:16:51,894 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 53 transitions. [2024-11-09 22:16:51,894 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.5) internal successors, (81), 18 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:16:51,895 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 53 transitions. [2024-11-09 22:16:51,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-09 22:16:51,895 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:16:51,896 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:16:51,909 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-09 22:16:52,096 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:16:52,096 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:16:52,097 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:16:52,097 INFO L85 PathProgramCache]: Analyzing trace with hash 289319294, now seen corresponding path program 5 times [2024-11-09 22:16:52,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:16:52,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222570022] [2024-11-09 22:16:52,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:16:52,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:16:52,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:52,315 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 49 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:16:52,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:16:52,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222570022] [2024-11-09 22:16:52,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222570022] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:16:52,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [228565040] [2024-11-09 22:16:52,316 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 22:16:52,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:16:52,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:16:52,318 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) [2024-11-09 22:16:52,320 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 22:16:52,380 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-09 22:16:52,380 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:16:52,381 INFO L255 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-09 22:16:52,383 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:16:52,583 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 65 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:16:52,583 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:16:52,702 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 65 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:16:52,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [228565040] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:16:52,702 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:16:52,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 22 [2024-11-09 22:16:52,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48960295] [2024-11-09 22:16:52,703 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:16:52,703 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-09 22:16:52,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:16:52,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-09 22:16:52,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=347, Unknown=0, NotChecked=0, Total=462 [2024-11-09 22:16:52,705 INFO L87 Difference]: Start difference. First operand 50 states and 53 transitions. Second operand has 22 states, 22 states have (on average 3.772727272727273) internal successors, (83), 22 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:16:52,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:16:52,852 INFO L93 Difference]: Finished difference Result 104 states and 120 transitions. [2024-11-09 22:16:52,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-09 22:16:52,852 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.772727272727273) internal successors, (83), 22 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2024-11-09 22:16:52,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:16:52,854 INFO L225 Difference]: With dead ends: 104 [2024-11-09 22:16:52,856 INFO L226 Difference]: Without dead ends: 70 [2024-11-09 22:16:52,857 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 80 SyntacticMatches, 10 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=201, Invalid=555, Unknown=0, NotChecked=0, Total=756 [2024-11-09 22:16:52,857 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 44 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 22:16:52,857 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 154 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 22:16:52,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-11-09 22:16:52,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 52. [2024-11-09 22:16:52,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.0784313725490196) internal successors, (55), 51 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:16:52,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 55 transitions. [2024-11-09 22:16:52,868 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 55 transitions. Word has length 49 [2024-11-09 22:16:52,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:16:52,868 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 55 transitions. [2024-11-09 22:16:52,869 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.772727272727273) internal successors, (83), 22 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:16:52,869 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 55 transitions. [2024-11-09 22:16:52,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-09 22:16:52,870 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:16:52,870 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:16:52,886 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-09 22:16:53,070 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:16:53,071 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:16:53,071 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:16:53,072 INFO L85 PathProgramCache]: Analyzing trace with hash -130356193, now seen corresponding path program 6 times [2024-11-09 22:16:53,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:16:53,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267818769] [2024-11-09 22:16:53,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:16:53,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:16:53,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:53,256 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 30 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:16:53,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:16:53,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267818769] [2024-11-09 22:16:53,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267818769] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:16:53,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [146579806] [2024-11-09 22:16:53,256 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 22:16:53,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:16:53,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:16:53,258 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) [2024-11-09 22:16:53,260 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 22:16:53,323 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-11-09 22:16:53,323 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:16:53,324 INFO L255 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-09 22:16:53,326 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:16:53,395 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 42 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:16:53,395 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:16:53,520 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 42 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:16:53,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [146579806] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:16:53,521 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:16:53,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 13 [2024-11-09 22:16:53,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545128520] [2024-11-09 22:16:53,521 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:16:53,521 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 22:16:53,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:16:53,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 22:16:53,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-11-09 22:16:53,522 INFO L87 Difference]: Start difference. First operand 52 states and 55 transitions. Second operand has 13 states, 13 states have (on average 5.769230769230769) internal successors, (75), 13 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:16:53,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:16:53,634 INFO L93 Difference]: Finished difference Result 74 states and 78 transitions. [2024-11-09 22:16:53,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-09 22:16:53,634 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.769230769230769) internal successors, (75), 13 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2024-11-09 22:16:53,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:16:53,635 INFO L225 Difference]: With dead ends: 74 [2024-11-09 22:16:53,635 INFO L226 Difference]: Without dead ends: 71 [2024-11-09 22:16:53,635 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 92 SyntacticMatches, 12 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=138, Invalid=242, Unknown=0, NotChecked=0, Total=380 [2024-11-09 22:16:53,636 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 17 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 22:16:53,636 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 122 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 22:16:53,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-11-09 22:16:53,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 62. [2024-11-09 22:16:53,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.0655737704918034) internal successors, (65), 61 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:16:53,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 65 transitions. [2024-11-09 22:16:53,647 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 65 transitions. Word has length 51 [2024-11-09 22:16:53,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:16:53,648 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 65 transitions. [2024-11-09 22:16:53,648 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.769230769230769) internal successors, (75), 13 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:16:53,648 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 65 transitions. [2024-11-09 22:16:53,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-09 22:16:53,649 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:16:53,649 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:16:53,667 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-09 22:16:53,849 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:16:53,850 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:16:53,850 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:16:53,850 INFO L85 PathProgramCache]: Analyzing trace with hash -1614284897, now seen corresponding path program 7 times [2024-11-09 22:16:53,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:16:53,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258362818] [2024-11-09 22:16:53,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:16:53,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:16:53,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:54,116 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 102 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:16:54,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:16:54,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258362818] [2024-11-09 22:16:54,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258362818] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:16:54,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [563129238] [2024-11-09 22:16:54,117 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 22:16:54,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:16:54,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:16:54,118 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) [2024-11-09 22:16:54,119 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 22:16:54,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:54,182 INFO L255 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-09 22:16:54,184 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:16:54,397 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 123 proven. 42 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 22:16:54,398 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:16:54,535 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 123 proven. 42 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 22:16:54,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [563129238] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:16:54,535 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:16:54,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 26 [2024-11-09 22:16:54,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89355504] [2024-11-09 22:16:54,536 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:16:54,536 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-09 22:16:54,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:16:54,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-09 22:16:54,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=494, Unknown=0, NotChecked=0, Total=650 [2024-11-09 22:16:54,537 INFO L87 Difference]: Start difference. First operand 62 states and 65 transitions. Second operand has 26 states, 26 states have (on average 4.0) internal successors, (104), 26 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:16:54,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:16:54,729 INFO L93 Difference]: Finished difference Result 127 states and 145 transitions. [2024-11-09 22:16:54,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-09 22:16:54,730 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.0) internal successors, (104), 26 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2024-11-09 22:16:54,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:16:54,731 INFO L225 Difference]: With dead ends: 127 [2024-11-09 22:16:54,731 INFO L226 Difference]: Without dead ends: 85 [2024-11-09 22:16:54,731 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 101 SyntacticMatches, 12 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 367 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=270, Invalid=786, Unknown=0, NotChecked=0, Total=1056 [2024-11-09 22:16:54,732 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 48 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 22:16:54,732 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 237 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 22:16:54,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-11-09 22:16:54,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 64. [2024-11-09 22:16:54,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.0634920634920635) internal successors, (67), 63 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:16:54,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 67 transitions. [2024-11-09 22:16:54,738 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 67 transitions. Word has length 61 [2024-11-09 22:16:54,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:16:54,738 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 67 transitions. [2024-11-09 22:16:54,738 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.0) internal successors, (104), 26 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:16:54,738 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 67 transitions. [2024-11-09 22:16:54,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-09 22:16:54,739 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:16:54,739 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:16:54,755 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-09 22:16:54,939 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 [2024-11-09 22:16:54,940 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:16:54,940 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:16:54,941 INFO L85 PathProgramCache]: Analyzing trace with hash -1260891968, now seen corresponding path program 8 times [2024-11-09 22:16:54,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:16:54,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130702561] [2024-11-09 22:16:54,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:16:54,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:16:54,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:55,223 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 102 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:16:55,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:16:55,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130702561] [2024-11-09 22:16:55,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130702561] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:16:55,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [737628384] [2024-11-09 22:16:55,224 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 22:16:55,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:16:55,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:16:55,226 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) [2024-11-09 22:16:55,227 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 22:16:55,291 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 22:16:55,291 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:16:55,292 INFO L255 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-09 22:16:55,294 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:16:55,547 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 126 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:16:55,547 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:16:55,701 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 126 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:16:55,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [737628384] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:16:55,701 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:16:55,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 28 [2024-11-09 22:16:55,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560370460] [2024-11-09 22:16:55,702 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:16:55,702 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-09 22:16:55,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:16:55,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-09 22:16:55,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=573, Unknown=0, NotChecked=0, Total=756 [2024-11-09 22:16:55,704 INFO L87 Difference]: Start difference. First operand 64 states and 67 transitions. Second operand has 28 states, 28 states have (on average 3.8214285714285716) internal successors, (107), 28 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:16:55,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:16:55,881 INFO L93 Difference]: Finished difference Result 134 states and 154 transitions. [2024-11-09 22:16:55,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-09 22:16:55,881 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.8214285714285716) internal successors, (107), 28 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2024-11-09 22:16:55,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:16:55,882 INFO L225 Difference]: With dead ends: 134 [2024-11-09 22:16:55,882 INFO L226 Difference]: Without dead ends: 90 [2024-11-09 22:16:55,883 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 102 SyntacticMatches, 14 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 440 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=329, Invalid=931, Unknown=0, NotChecked=0, Total=1260 [2024-11-09 22:16:55,883 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 58 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 22:16:55,883 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 181 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 22:16:55,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2024-11-09 22:16:55,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 66. [2024-11-09 22:16:55,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.0615384615384615) internal successors, (69), 65 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:16:55,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 69 transitions. [2024-11-09 22:16:55,888 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 69 transitions. Word has length 63 [2024-11-09 22:16:55,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:16:55,889 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 69 transitions. [2024-11-09 22:16:55,889 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.8214285714285716) internal successors, (107), 28 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:16:55,889 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 69 transitions. [2024-11-09 22:16:55,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-09 22:16:55,890 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:16:55,890 INFO L215 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:16:55,906 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-09 22:16:56,094 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 [2024-11-09 22:16:56,095 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:16:56,095 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:16:56,095 INFO L85 PathProgramCache]: Analyzing trace with hash -952703583, now seen corresponding path program 9 times [2024-11-09 22:16:56,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:16:56,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226224456] [2024-11-09 22:16:56,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:16:56,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:16:56,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:56,350 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 56 proven. 142 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:16:56,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:16:56,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226224456] [2024-11-09 22:16:56,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226224456] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:16:56,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [420206031] [2024-11-09 22:16:56,351 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 22:16:56,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:16:56,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:16:56,353 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) [2024-11-09 22:16:56,368 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 22:16:56,441 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-11-09 22:16:56,441 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:16:56,443 INFO L255 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-09 22:16:56,445 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:16:56,538 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 72 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:16:56,538 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:16:56,682 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 72 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:16:56,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [420206031] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:16:56,683 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:16:56,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 15 [2024-11-09 22:16:56,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644423642] [2024-11-09 22:16:56,683 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:16:56,683 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 22:16:56,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:16:56,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 22:16:56,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2024-11-09 22:16:56,684 INFO L87 Difference]: Start difference. First operand 66 states and 69 transitions. Second operand has 15 states, 15 states have (on average 5.933333333333334) internal successors, (89), 15 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:16:56,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:16:56,787 INFO L93 Difference]: Finished difference Result 88 states and 92 transitions. [2024-11-09 22:16:56,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-09 22:16:56,787 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.933333333333334) internal successors, (89), 15 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2024-11-09 22:16:56,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:16:56,788 INFO L225 Difference]: With dead ends: 88 [2024-11-09 22:16:56,788 INFO L226 Difference]: Without dead ends: 85 [2024-11-09 22:16:56,788 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 119 SyntacticMatches, 15 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=201, Invalid=351, Unknown=0, NotChecked=0, Total=552 [2024-11-09 22:16:56,789 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 13 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 22:16:56,789 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 121 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 22:16:56,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-11-09 22:16:56,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 76. [2024-11-09 22:16:56,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.0533333333333332) internal successors, (79), 75 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:16:56,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 79 transitions. [2024-11-09 22:16:56,803 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 79 transitions. Word has length 65 [2024-11-09 22:16:56,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:16:56,803 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 79 transitions. [2024-11-09 22:16:56,804 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.933333333333334) internal successors, (89), 15 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:16:56,804 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 79 transitions. [2024-11-09 22:16:56,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-09 22:16:56,805 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:16:56,805 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:16:56,819 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-09 22:16:57,009 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 [2024-11-09 22:16:57,009 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:16:57,010 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:16:57,010 INFO L85 PathProgramCache]: Analyzing trace with hash 1057191585, now seen corresponding path program 10 times [2024-11-09 22:16:57,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:16:57,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036126067] [2024-11-09 22:16:57,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:16:57,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:16:57,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:57,398 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 175 proven. 104 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:16:57,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:16:57,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036126067] [2024-11-09 22:16:57,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036126067] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:16:57,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1795552112] [2024-11-09 22:16:57,398 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 22:16:57,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:16:57,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:16:57,401 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) [2024-11-09 22:16:57,402 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-09 22:16:57,484 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 22:16:57,484 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:16:57,485 INFO L255 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-09 22:16:57,488 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:16:57,830 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 207 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:16:57,831 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:16:58,034 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 207 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:16:58,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1795552112] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:16:58,035 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:16:58,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 35 [2024-11-09 22:16:58,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502141171] [2024-11-09 22:16:58,035 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:16:58,035 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-09 22:16:58,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:16:58,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-09 22:16:58,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=290, Invalid=900, Unknown=0, NotChecked=0, Total=1190 [2024-11-09 22:16:58,037 INFO L87 Difference]: Start difference. First operand 76 states and 79 transitions. Second operand has 35 states, 35 states have (on average 3.9714285714285715) internal successors, (139), 35 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:16:58,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:16:58,384 INFO L93 Difference]: Finished difference Result 208 states and 233 transitions. [2024-11-09 22:16:58,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-09 22:16:58,384 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 3.9714285714285715) internal successors, (139), 35 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2024-11-09 22:16:58,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:16:58,385 INFO L225 Difference]: With dead ends: 208 [2024-11-09 22:16:58,385 INFO L226 Difference]: Without dead ends: 110 [2024-11-09 22:16:58,386 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 121 SyntacticMatches, 15 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 889 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=719, Invalid=2143, Unknown=0, NotChecked=0, Total=2862 [2024-11-09 22:16:58,387 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 118 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 22:16:58,387 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 332 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 22:16:58,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2024-11-09 22:16:58,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 80. [2024-11-09 22:16:58,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 1.0506329113924051) internal successors, (83), 79 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:16:58,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 83 transitions. [2024-11-09 22:16:58,393 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 83 transitions. Word has length 75 [2024-11-09 22:16:58,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:16:58,393 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 83 transitions. [2024-11-09 22:16:58,393 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 3.9714285714285715) internal successors, (139), 35 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:16:58,393 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 83 transitions. [2024-11-09 22:16:58,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-09 22:16:58,394 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:16:58,394 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:16:58,410 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-09 22:16:58,594 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 [2024-11-09 22:16:58,595 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:16:58,595 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:16:58,596 INFO L85 PathProgramCache]: Analyzing trace with hash 2121316643, now seen corresponding path program 11 times [2024-11-09 22:16:58,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:16:58,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504369526] [2024-11-09 22:16:58,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:16:58,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:16:58,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:58,884 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 90 proven. 227 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:16:58,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:16:58,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504369526] [2024-11-09 22:16:58,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504369526] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:16:58,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1196799547] [2024-11-09 22:16:58,886 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 22:16:58,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:16:58,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:16:58,888 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) [2024-11-09 22:16:58,889 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-09 22:16:58,973 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2024-11-09 22:16:58,974 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:16:58,975 INFO L255 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-09 22:16:58,978 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:16:59,090 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 110 proven. 207 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:16:59,090 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:16:59,317 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 110 proven. 207 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:16:59,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1196799547] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:16:59,317 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:16:59,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 17 [2024-11-09 22:16:59,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334070050] [2024-11-09 22:16:59,318 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:16:59,318 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-09 22:16:59,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:16:59,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-09 22:16:59,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=172, Unknown=0, NotChecked=0, Total=272 [2024-11-09 22:16:59,319 INFO L87 Difference]: Start difference. First operand 80 states and 83 transitions. Second operand has 17 states, 17 states have (on average 6.0588235294117645) internal successors, (103), 17 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:16:59,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:16:59,460 INFO L93 Difference]: Finished difference Result 102 states and 106 transitions. [2024-11-09 22:16:59,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-09 22:16:59,460 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 6.0588235294117645) internal successors, (103), 17 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2024-11-09 22:16:59,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:16:59,461 INFO L225 Difference]: With dead ends: 102 [2024-11-09 22:16:59,461 INFO L226 Difference]: Without dead ends: 99 [2024-11-09 22:16:59,462 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 144 SyntacticMatches, 20 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=276, Invalid=480, Unknown=0, NotChecked=0, Total=756 [2024-11-09 22:16:59,462 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 13 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 22:16:59,462 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 138 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 22:16:59,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-11-09 22:16:59,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 90. [2024-11-09 22:16:59,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 89 states have (on average 1.0449438202247192) internal successors, (93), 89 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:16:59,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 93 transitions. [2024-11-09 22:16:59,468 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 93 transitions. Word has length 79 [2024-11-09 22:16:59,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:16:59,468 INFO L471 AbstractCegarLoop]: Abstraction has 90 states and 93 transitions. [2024-11-09 22:16:59,468 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.0588235294117645) internal successors, (103), 17 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:16:59,468 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 93 transitions. [2024-11-09 22:16:59,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-09 22:16:59,469 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:16:59,469 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:16:59,487 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-09 22:16:59,673 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,SelfDestructingSolverStorable13 [2024-11-09 22:16:59,674 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:16:59,674 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:16:59,674 INFO L85 PathProgramCache]: Analyzing trace with hash 510939043, now seen corresponding path program 12 times [2024-11-09 22:16:59,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:16:59,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652689202] [2024-11-09 22:16:59,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:16:59,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:16:59,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:17:00,065 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 268 proven. 150 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:17:00,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:17:00,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652689202] [2024-11-09 22:17:00,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652689202] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:17:00,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1148985686] [2024-11-09 22:17:00,065 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 22:17:00,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:17:00,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:17:00,069 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) [2024-11-09 22:17:00,071 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-09 22:17:00,154 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2024-11-09 22:17:00,154 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:17:00,155 INFO L255 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-09 22:17:00,156 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:17:00,578 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 308 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:17:00,578 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:17:00,830 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 308 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:17:00,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1148985686] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:17:00,831 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:17:00,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 41 [2024-11-09 22:17:00,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137914159] [2024-11-09 22:17:00,831 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:17:00,831 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-09 22:17:00,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:17:00,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-09 22:17:00,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=394, Invalid=1246, Unknown=0, NotChecked=0, Total=1640 [2024-11-09 22:17:00,833 INFO L87 Difference]: Start difference. First operand 90 states and 93 transitions. Second operand has 41 states, 41 states have (on average 3.975609756097561) internal successors, (163), 41 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:17:01,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:17:01,284 INFO L93 Difference]: Finished difference Result 248 states and 277 transitions. [2024-11-09 22:17:01,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-09 22:17:01,284 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.975609756097561) internal successors, (163), 41 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2024-11-09 22:17:01,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:17:01,285 INFO L225 Difference]: With dead ends: 248 [2024-11-09 22:17:01,285 INFO L226 Difference]: Without dead ends: 130 [2024-11-09 22:17:01,288 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 143 SyntacticMatches, 19 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1278 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1005, Invalid=3027, Unknown=0, NotChecked=0, Total=4032 [2024-11-09 22:17:01,290 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 152 mSDsluCounter, 405 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 443 SdHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 22:17:01,290 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 443 Invalid, 393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 339 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 22:17:01,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2024-11-09 22:17:01,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 94. [2024-11-09 22:17:01,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 1.043010752688172) internal successors, (97), 93 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:17:01,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 97 transitions. [2024-11-09 22:17:01,301 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 97 transitions. Word has length 89 [2024-11-09 22:17:01,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:17:01,304 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 97 transitions. [2024-11-09 22:17:01,304 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.975609756097561) internal successors, (163), 41 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:17:01,305 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 97 transitions. [2024-11-09 22:17:01,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-09 22:17:01,305 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:17:01,306 INFO L215 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:17:01,326 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-09 22:17:01,506 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-09 22:17:01,506 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:17:01,506 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:17:01,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1913518427, now seen corresponding path program 13 times [2024-11-09 22:17:01,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:17:01,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275251423] [2024-11-09 22:17:01,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:17:01,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:17:01,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:17:01,852 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 132 proven. 332 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:17:01,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:17:01,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275251423] [2024-11-09 22:17:01,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275251423] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:17:01,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2063380698] [2024-11-09 22:17:01,853 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 22:17:01,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:17:01,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:17:01,854 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 22:17:01,855 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-09 22:17:01,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:17:01,950 INFO L255 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-09 22:17:01,952 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:17:02,063 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 156 proven. 308 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:17:02,063 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:17:02,295 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 156 proven. 308 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:17:02,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2063380698] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:17:02,296 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:17:02,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 19 [2024-11-09 22:17:02,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057290099] [2024-11-09 22:17:02,296 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:17:02,296 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-09 22:17:02,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:17:02,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-09 22:17:02,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=213, Unknown=0, NotChecked=0, Total=342 [2024-11-09 22:17:02,297 INFO L87 Difference]: Start difference. First operand 94 states and 97 transitions. Second operand has 19 states, 19 states have (on average 6.157894736842105) internal successors, (117), 19 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:17:02,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:17:02,429 INFO L93 Difference]: Finished difference Result 116 states and 120 transitions. [2024-11-09 22:17:02,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-09 22:17:02,429 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 6.157894736842105) internal successors, (117), 19 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2024-11-09 22:17:02,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:17:02,430 INFO L225 Difference]: With dead ends: 116 [2024-11-09 22:17:02,430 INFO L226 Difference]: Without dead ends: 113 [2024-11-09 22:17:02,430 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 170 SyntacticMatches, 24 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 443 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=363, Invalid=629, Unknown=0, NotChecked=0, Total=992 [2024-11-09 22:17:02,431 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 13 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 22:17:02,431 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 183 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 22:17:02,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2024-11-09 22:17:02,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 104. [2024-11-09 22:17:02,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 1.0388349514563107) internal successors, (107), 103 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:17:02,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 107 transitions. [2024-11-09 22:17:02,438 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 107 transitions. Word has length 93 [2024-11-09 22:17:02,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:17:02,439 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 107 transitions. [2024-11-09 22:17:02,439 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 6.157894736842105) internal successors, (117), 19 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:17:02,439 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 107 transitions. [2024-11-09 22:17:02,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-09 22:17:02,440 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:17:02,440 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:17:02,454 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-09 22:17:02,640 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-09 22:17:02,641 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:17:02,641 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:17:02,641 INFO L85 PathProgramCache]: Analyzing trace with hash -425975131, now seen corresponding path program 14 times [2024-11-09 22:17:02,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:17:02,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750108369] [2024-11-09 22:17:02,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:17:02,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:17:02,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:17:03,168 INFO L134 CoverageAnalysis]: Checked inductivity of 585 backedges. 381 proven. 204 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:17:03,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:17:03,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750108369] [2024-11-09 22:17:03,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750108369] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:17:03,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [135758733] [2024-11-09 22:17:03,169 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 22:17:03,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:17:03,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:17:03,171 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 22:17:03,174 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-09 22:17:03,273 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 22:17:03,273 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:17:03,275 INFO L255 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-09 22:17:03,276 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:17:03,742 INFO L134 CoverageAnalysis]: Checked inductivity of 585 backedges. 426 proven. 156 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 22:17:03,742 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:17:04,097 INFO L134 CoverageAnalysis]: Checked inductivity of 585 backedges. 426 proven. 156 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 22:17:04,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [135758733] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:17:04,097 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:17:04,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 28, 28] total 44 [2024-11-09 22:17:04,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612431982] [2024-11-09 22:17:04,097 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:17:04,098 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-09 22:17:04,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:17:04,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-09 22:17:04,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=438, Invalid=1454, Unknown=0, NotChecked=0, Total=1892 [2024-11-09 22:17:04,099 INFO L87 Difference]: Start difference. First operand 104 states and 107 transitions. Second operand has 44 states, 44 states have (on average 4.0) internal successors, (176), 44 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:17:04,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:17:04,388 INFO L93 Difference]: Finished difference Result 217 states and 247 transitions. [2024-11-09 22:17:04,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-09 22:17:04,388 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 4.0) internal successors, (176), 44 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2024-11-09 22:17:04,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:17:04,389 INFO L225 Difference]: With dead ends: 217 [2024-11-09 22:17:04,389 INFO L226 Difference]: Without dead ends: 145 [2024-11-09 22:17:04,390 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 167 SyntacticMatches, 24 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1171 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=804, Invalid=2388, Unknown=0, NotChecked=0, Total=3192 [2024-11-09 22:17:04,390 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 110 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 22:17:04,391 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 373 Invalid, 329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 22:17:04,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2024-11-09 22:17:04,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 106. [2024-11-09 22:17:04,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 105 states have (on average 1.0380952380952382) internal successors, (109), 105 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:17:04,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 109 transitions. [2024-11-09 22:17:04,396 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 109 transitions. Word has length 103 [2024-11-09 22:17:04,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:17:04,397 INFO L471 AbstractCegarLoop]: Abstraction has 106 states and 109 transitions. [2024-11-09 22:17:04,397 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 4.0) internal successors, (176), 44 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:17:04,397 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 109 transitions. [2024-11-09 22:17:04,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-09 22:17:04,398 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:17:04,398 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:17:04,413 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-09 22:17:04,601 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:17:04,602 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:17:04,602 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:17:04,602 INFO L85 PathProgramCache]: Analyzing trace with hash -191069562, now seen corresponding path program 15 times [2024-11-09 22:17:04,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:17:04,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458568763] [2024-11-09 22:17:04,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:17:04,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:17:04,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:17:05,093 INFO L134 CoverageAnalysis]: Checked inductivity of 611 backedges. 381 proven. 230 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:17:05,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:17:05,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458568763] [2024-11-09 22:17:05,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458568763] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:17:05,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1525672457] [2024-11-09 22:17:05,094 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 22:17:05,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:17:05,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:17:05,095 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 22:17:05,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-09 22:17:05,184 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2024-11-09 22:17:05,185 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:17:05,186 INFO L255 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-09 22:17:05,187 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:17:05,636 INFO L134 CoverageAnalysis]: Checked inductivity of 611 backedges. 429 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:17:05,636 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:17:05,990 INFO L134 CoverageAnalysis]: Checked inductivity of 611 backedges. 429 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:17:05,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1525672457] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:17:05,990 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:17:05,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 30] total 46 [2024-11-09 22:17:05,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348298039] [2024-11-09 22:17:05,990 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:17:05,991 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-11-09 22:17:05,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:17:05,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-11-09 22:17:05,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=483, Invalid=1587, Unknown=0, NotChecked=0, Total=2070 [2024-11-09 22:17:05,992 INFO L87 Difference]: Start difference. First operand 106 states and 109 transitions. Second operand has 46 states, 46 states have (on average 3.891304347826087) internal successors, (179), 46 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:17:06,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:17:06,333 INFO L93 Difference]: Finished difference Result 224 states and 256 transitions. [2024-11-09 22:17:06,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-09 22:17:06,334 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 3.891304347826087) internal successors, (179), 46 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2024-11-09 22:17:06,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:17:06,335 INFO L225 Difference]: With dead ends: 224 [2024-11-09 22:17:06,335 INFO L226 Difference]: Without dead ends: 150 [2024-11-09 22:17:06,336 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 168 SyntacticMatches, 26 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1292 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=905, Invalid=2635, Unknown=0, NotChecked=0, Total=3540 [2024-11-09 22:17:06,336 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 130 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 22:17:06,336 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 347 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 22:17:06,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2024-11-09 22:17:06,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 108. [2024-11-09 22:17:06,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 107 states have (on average 1.0373831775700935) internal successors, (111), 107 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:17:06,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 111 transitions. [2024-11-09 22:17:06,343 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 111 transitions. Word has length 105 [2024-11-09 22:17:06,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:17:06,343 INFO L471 AbstractCegarLoop]: Abstraction has 108 states and 111 transitions. [2024-11-09 22:17:06,343 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 3.891304347826087) internal successors, (179), 46 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:17:06,343 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 111 transitions. [2024-11-09 22:17:06,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-09 22:17:06,344 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:17:06,344 INFO L215 NwaCegarLoop]: trace histogram [15, 14, 14, 14, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:17:06,362 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-09 22:17:06,545 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-09 22:17:06,545 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:17:06,545 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:17:06,545 INFO L85 PathProgramCache]: Analyzing trace with hash -2080084441, now seen corresponding path program 16 times [2024-11-09 22:17:06,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:17:06,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496009245] [2024-11-09 22:17:06,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:17:06,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:17:06,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:17:06,928 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 182 proven. 457 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:17:06,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:17:06,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496009245] [2024-11-09 22:17:06,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496009245] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:17:06,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [325152864] [2024-11-09 22:17:06,928 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 22:17:06,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:17:06,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:17:06,930 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 22:17:06,932 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-09 22:17:07,030 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 22:17:07,031 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:17:07,033 INFO L255 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-09 22:17:07,034 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:17:07,161 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 210 proven. 429 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:17:07,161 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:17:07,461 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 210 proven. 429 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:17:07,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [325152864] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:17:07,461 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:17:07,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 21 [2024-11-09 22:17:07,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139761685] [2024-11-09 22:17:07,462 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:17:07,462 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-09 22:17:07,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:17:07,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-09 22:17:07,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=258, Unknown=0, NotChecked=0, Total=420 [2024-11-09 22:17:07,463 INFO L87 Difference]: Start difference. First operand 108 states and 111 transitions. Second operand has 21 states, 21 states have (on average 6.238095238095238) internal successors, (131), 21 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:17:07,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:17:07,644 INFO L93 Difference]: Finished difference Result 130 states and 134 transitions. [2024-11-09 22:17:07,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-09 22:17:07,645 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 6.238095238095238) internal successors, (131), 21 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2024-11-09 22:17:07,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:17:07,645 INFO L225 Difference]: With dead ends: 130 [2024-11-09 22:17:07,645 INFO L226 Difference]: Without dead ends: 127 [2024-11-09 22:17:07,646 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 197 SyntacticMatches, 27 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 561 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=462, Invalid=798, Unknown=0, NotChecked=0, Total=1260 [2024-11-09 22:17:07,646 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 15 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 22:17:07,647 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 158 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 22:17:07,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2024-11-09 22:17:07,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 118. [2024-11-09 22:17:07,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 117 states have (on average 1.0341880341880343) internal successors, (121), 117 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:17:07,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 121 transitions. [2024-11-09 22:17:07,653 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 121 transitions. Word has length 107 [2024-11-09 22:17:07,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:17:07,653 INFO L471 AbstractCegarLoop]: Abstraction has 118 states and 121 transitions. [2024-11-09 22:17:07,653 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 6.238095238095238) internal successors, (131), 21 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:17:07,653 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 121 transitions. [2024-11-09 22:17:07,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-09 22:17:07,654 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:17:07,654 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:17:07,671 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-09 22:17:07,858 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:17:07,859 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:17:07,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:17:07,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1908633689, now seen corresponding path program 17 times [2024-11-09 22:17:07,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:17:07,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211900009] [2024-11-09 22:17:07,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:17:07,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:17:07,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:17:08,498 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 514 proven. 266 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:17:08,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:17:08,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211900009] [2024-11-09 22:17:08,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211900009] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:17:08,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [304941637] [2024-11-09 22:17:08,499 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 22:17:08,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:17:08,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:17:08,501 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 22:17:08,503 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-09 22:17:08,619 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2024-11-09 22:17:08,619 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:17:08,621 INFO L255 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-09 22:17:08,623 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:17:09,174 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 570 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:17:09,175 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:17:09,557 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 570 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:17:09,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [304941637] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:17:09,557 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:17:09,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 53 [2024-11-09 22:17:09,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506388544] [2024-11-09 22:17:09,558 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:17:09,558 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-11-09 22:17:09,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:17:09,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-11-09 22:17:09,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=650, Invalid=2106, Unknown=0, NotChecked=0, Total=2756 [2024-11-09 22:17:09,559 INFO L87 Difference]: Start difference. First operand 118 states and 121 transitions. Second operand has 53 states, 53 states have (on average 3.981132075471698) internal successors, (211), 53 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:17:10,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:17:10,117 INFO L93 Difference]: Finished difference Result 328 states and 365 transitions. [2024-11-09 22:17:10,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-11-09 22:17:10,118 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 3.981132075471698) internal successors, (211), 53 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2024-11-09 22:17:10,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:17:10,119 INFO L225 Difference]: With dead ends: 328 [2024-11-09 22:17:10,119 INFO L226 Difference]: Without dead ends: 170 [2024-11-09 22:17:10,121 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 187 SyntacticMatches, 27 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2260 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1721, Invalid=5251, Unknown=0, NotChecked=0, Total=6972 [2024-11-09 22:17:10,121 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 182 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 513 SdHoareTripleChecker+Invalid, 445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 22:17:10,122 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 513 Invalid, 445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 384 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 22:17:10,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2024-11-09 22:17:10,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 122. [2024-11-09 22:17:10,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 121 states have (on average 1.0330578512396693) internal successors, (125), 121 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:17:10,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 125 transitions. [2024-11-09 22:17:10,128 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 125 transitions. Word has length 117 [2024-11-09 22:17:10,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:17:10,128 INFO L471 AbstractCegarLoop]: Abstraction has 122 states and 125 transitions. [2024-11-09 22:17:10,129 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 3.981132075471698) internal successors, (211), 53 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:17:10,129 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 125 transitions. [2024-11-09 22:17:10,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-09 22:17:10,129 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:17:10,129 INFO L215 NwaCegarLoop]: trace histogram [17, 16, 16, 16, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:17:10,143 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-09 22:17:10,330 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:17:10,330 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:17:10,331 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:17:10,331 INFO L85 PathProgramCache]: Analyzing trace with hash 2133954473, now seen corresponding path program 18 times [2024-11-09 22:17:10,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:17:10,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110849172] [2024-11-09 22:17:10,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:17:10,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:17:10,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:17:10,804 INFO L134 CoverageAnalysis]: Checked inductivity of 842 backedges. 240 proven. 602 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:17:10,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:17:10,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110849172] [2024-11-09 22:17:10,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110849172] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:17:10,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1802620238] [2024-11-09 22:17:10,804 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 22:17:10,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:17:10,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:17:10,806 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 22:17:10,806 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-09 22:17:10,912 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2024-11-09 22:17:10,912 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:17:10,915 INFO L255 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-09 22:17:10,917 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:17:11,039 INFO L134 CoverageAnalysis]: Checked inductivity of 842 backedges. 272 proven. 570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:17:11,039 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:17:11,333 INFO L134 CoverageAnalysis]: Checked inductivity of 842 backedges. 272 proven. 570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:17:11,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1802620238] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:17:11,333 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:17:11,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 23 [2024-11-09 22:17:11,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656801122] [2024-11-09 22:17:11,334 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:17:11,334 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-09 22:17:11,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:17:11,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-09 22:17:11,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=307, Unknown=0, NotChecked=0, Total=506 [2024-11-09 22:17:11,335 INFO L87 Difference]: Start difference. First operand 122 states and 125 transitions. Second operand has 23 states, 23 states have (on average 6.304347826086956) internal successors, (145), 23 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:17:11,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:17:11,516 INFO L93 Difference]: Finished difference Result 144 states and 148 transitions. [2024-11-09 22:17:11,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-09 22:17:11,516 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 6.304347826086956) internal successors, (145), 23 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2024-11-09 22:17:11,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:17:11,517 INFO L225 Difference]: With dead ends: 144 [2024-11-09 22:17:11,517 INFO L226 Difference]: Without dead ends: 141 [2024-11-09 22:17:11,517 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 223 SyntacticMatches, 31 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 707 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=573, Invalid=987, Unknown=0, NotChecked=0, Total=1560 [2024-11-09 22:17:11,517 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 11 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 22:17:11,518 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 221 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 22:17:11,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2024-11-09 22:17:11,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 132. [2024-11-09 22:17:11,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 131 states have (on average 1.0305343511450382) internal successors, (135), 131 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:17:11,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 135 transitions. [2024-11-09 22:17:11,523 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 135 transitions. Word has length 121 [2024-11-09 22:17:11,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:17:11,524 INFO L471 AbstractCegarLoop]: Abstraction has 132 states and 135 transitions. [2024-11-09 22:17:11,524 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 6.304347826086956) internal successors, (145), 23 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:17:11,524 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 135 transitions. [2024-11-09 22:17:11,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-11-09 22:17:11,524 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:17:11,524 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:17:11,539 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-09 22:17:11,725 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:17:11,725 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:17:11,725 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:17:11,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1280784041, now seen corresponding path program 19 times [2024-11-09 22:17:11,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:17:11,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146483851] [2024-11-09 22:17:11,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:17:11,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:17:11,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:17:12,452 INFO L134 CoverageAnalysis]: Checked inductivity of 1003 backedges. 667 proven. 336 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:17:12,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:17:12,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146483851] [2024-11-09 22:17:12,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146483851] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:17:12,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110863360] [2024-11-09 22:17:12,453 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 22:17:12,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:17:12,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:17:12,454 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 22:17:12,456 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-09 22:17:12,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:17:12,560 INFO L255 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-09 22:17:12,561 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:17:13,263 INFO L134 CoverageAnalysis]: Checked inductivity of 1003 backedges. 728 proven. 272 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 22:17:13,264 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:17:13,688 INFO L134 CoverageAnalysis]: Checked inductivity of 1003 backedges. 728 proven. 272 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 22:17:13,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1110863360] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:17:13,688 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:17:13,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 36, 36] total 56 [2024-11-09 22:17:13,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655654195] [2024-11-09 22:17:13,688 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:17:13,689 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-11-09 22:17:13,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:17:13,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-11-09 22:17:13,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=706, Invalid=2374, Unknown=0, NotChecked=0, Total=3080 [2024-11-09 22:17:13,690 INFO L87 Difference]: Start difference. First operand 132 states and 135 transitions. Second operand has 56 states, 56 states have (on average 4.0) internal successors, (224), 56 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:17:14,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:17:14,083 INFO L93 Difference]: Finished difference Result 277 states and 315 transitions. [2024-11-09 22:17:14,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-09 22:17:14,083 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 4.0) internal successors, (224), 56 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2024-11-09 22:17:14,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:17:14,084 INFO L225 Difference]: With dead ends: 277 [2024-11-09 22:17:14,084 INFO L226 Difference]: Without dead ends: 185 [2024-11-09 22:17:14,086 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 211 SyntacticMatches, 32 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1947 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1320, Invalid=3936, Unknown=0, NotChecked=0, Total=5256 [2024-11-09 22:17:14,086 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 156 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 388 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 530 SdHoareTripleChecker+Invalid, 451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 22:17:14,087 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 530 Invalid, 451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 388 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 22:17:14,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2024-11-09 22:17:14,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 134. [2024-11-09 22:17:14,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 133 states have (on average 1.0300751879699248) internal successors, (137), 133 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:17:14,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 137 transitions. [2024-11-09 22:17:14,092 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 137 transitions. Word has length 131 [2024-11-09 22:17:14,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:17:14,092 INFO L471 AbstractCegarLoop]: Abstraction has 134 states and 137 transitions. [2024-11-09 22:17:14,092 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 4.0) internal successors, (224), 56 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:17:14,092 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 137 transitions. [2024-11-09 22:17:14,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-11-09 22:17:14,093 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:17:14,093 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:17:14,106 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-09 22:17:14,293 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:17:14,294 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:17:14,294 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:17:14,294 INFO L85 PathProgramCache]: Analyzing trace with hash 1331358474, now seen corresponding path program 20 times [2024-11-09 22:17:14,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:17:14,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358364102] [2024-11-09 22:17:14,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:17:14,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:17:14,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:17:15,104 INFO L134 CoverageAnalysis]: Checked inductivity of 1037 backedges. 667 proven. 370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:17:15,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:17:15,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358364102] [2024-11-09 22:17:15,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358364102] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:17:15,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2013305611] [2024-11-09 22:17:15,104 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 22:17:15,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:17:15,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:17:15,106 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 22:17:15,106 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-09 22:17:15,226 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 22:17:15,226 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:17:15,229 INFO L255 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-09 22:17:15,231 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:17:15,740 INFO L134 CoverageAnalysis]: Checked inductivity of 1037 backedges. 306 proven. 731 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:17:15,740 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:17:16,559 INFO L134 CoverageAnalysis]: Checked inductivity of 1037 backedges. 306 proven. 731 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:17:16,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2013305611] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:17:16,560 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:17:16,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 21, 21] total 57 [2024-11-09 22:17:16,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634613859] [2024-11-09 22:17:16,560 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:17:16,560 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2024-11-09 22:17:16,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:17:16,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2024-11-09 22:17:16,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=553, Invalid=2639, Unknown=0, NotChecked=0, Total=3192 [2024-11-09 22:17:16,563 INFO L87 Difference]: Start difference. First operand 134 states and 137 transitions. Second operand has 57 states, 57 states have (on average 4.614035087719298) internal successors, (263), 57 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:17:18,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:17:18,008 INFO L93 Difference]: Finished difference Result 290 states and 331 transitions. [2024-11-09 22:17:18,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2024-11-09 22:17:18,009 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 4.614035087719298) internal successors, (263), 57 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 133 [2024-11-09 22:17:18,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:17:18,010 INFO L225 Difference]: With dead ends: 290 [2024-11-09 22:17:18,010 INFO L226 Difference]: Without dead ends: 196 [2024-11-09 22:17:18,013 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 229 SyntacticMatches, 36 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8211 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=3405, Invalid=17475, Unknown=0, NotChecked=0, Total=20880 [2024-11-09 22:17:18,014 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 248 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 1003 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 1075 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1003 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 22:17:18,014 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 464 Invalid, 1075 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1003 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 22:17:18,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2024-11-09 22:17:18,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 141. [2024-11-09 22:17:18,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 140 states have (on average 1.0285714285714285) internal successors, (144), 140 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:17:18,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 144 transitions. [2024-11-09 22:17:18,021 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 144 transitions. Word has length 133 [2024-11-09 22:17:18,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:17:18,021 INFO L471 AbstractCegarLoop]: Abstraction has 141 states and 144 transitions. [2024-11-09 22:17:18,021 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 4.614035087719298) internal successors, (263), 57 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:17:18,021 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 144 transitions. [2024-11-09 22:17:18,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-09 22:17:18,022 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:17:18,022 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:17:18,035 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-11-09 22:17:18,222 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-09 22:17:18,223 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:17:18,223 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:17:18,223 INFO L85 PathProgramCache]: Analyzing trace with hash 2015166783, now seen corresponding path program 21 times [2024-11-09 22:17:18,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:17:18,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401619887] [2024-11-09 22:17:18,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:17:18,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:17:18,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:17:19,076 INFO L134 CoverageAnalysis]: Checked inductivity of 1161 backedges. 751 proven. 410 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:17:19,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:17:19,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401619887] [2024-11-09 22:17:19,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401619887] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:17:19,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1959702258] [2024-11-09 22:17:19,076 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 22:17:19,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:17:19,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:17:19,078 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 22:17:19,078 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-09 22:17:19,206 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 19 check-sat command(s) [2024-11-09 22:17:19,207 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:17:19,209 INFO L255 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-09 22:17:19,210 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:17:19,903 INFO L134 CoverageAnalysis]: Checked inductivity of 1161 backedges. 819 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:17:19,903 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:17:20,431 INFO L134 CoverageAnalysis]: Checked inductivity of 1161 backedges. 819 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:17:20,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1959702258] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:17:20,432 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:17:20,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40, 40] total 61 [2024-11-09 22:17:20,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821485243] [2024-11-09 22:17:20,432 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:17:20,432 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2024-11-09 22:17:20,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:17:20,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2024-11-09 22:17:20,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=843, Invalid=2817, Unknown=0, NotChecked=0, Total=3660 [2024-11-09 22:17:20,433 INFO L87 Difference]: Start difference. First operand 141 states and 144 transitions. Second operand has 61 states, 61 states have (on average 3.918032786885246) internal successors, (239), 61 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:17:20,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:17:20,932 INFO L93 Difference]: Finished difference Result 299 states and 341 transitions. [2024-11-09 22:17:20,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-09 22:17:20,932 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 3.918032786885246) internal successors, (239), 61 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2024-11-09 22:17:20,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:17:20,934 INFO L225 Difference]: With dead ends: 299 [2024-11-09 22:17:20,934 INFO L226 Difference]: Without dead ends: 200 [2024-11-09 22:17:20,935 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 223 SyntacticMatches, 36 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2332 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1605, Invalid=4715, Unknown=0, NotChecked=0, Total=6320 [2024-11-09 22:17:20,936 INFO L432 NwaCegarLoop]: 62 mSDtfsCounter, 170 mSDsluCounter, 534 mSDsCounter, 0 mSdLazyCounter, 449 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 22:17:20,936 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 596 Invalid, 516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 449 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 22:17:20,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2024-11-09 22:17:20,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 143. [2024-11-09 22:17:20,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 142 states have (on average 1.028169014084507) internal successors, (146), 142 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:17:20,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 146 transitions. [2024-11-09 22:17:20,944 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 146 transitions. Word has length 140 [2024-11-09 22:17:20,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:17:20,944 INFO L471 AbstractCegarLoop]: Abstraction has 143 states and 146 transitions. [2024-11-09 22:17:20,945 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 3.918032786885246) internal successors, (239), 61 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:17:20,945 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 146 transitions. [2024-11-09 22:17:20,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-11-09 22:17:20,945 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:17:20,946 INFO L215 NwaCegarLoop]: trace histogram [20, 19, 19, 19, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:17:20,962 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-09 22:17:21,146 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-09 22:17:21,146 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:17:21,147 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:17:21,147 INFO L85 PathProgramCache]: Analyzing trace with hash 1540860414, now seen corresponding path program 22 times [2024-11-09 22:17:21,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:17:21,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251904701] [2024-11-09 22:17:21,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:17:21,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:17:21,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:17:21,777 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 342 proven. 857 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:17:21,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:17:21,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251904701] [2024-11-09 22:17:21,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251904701] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:17:21,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1043809628] [2024-11-09 22:17:21,778 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 22:17:21,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:17:21,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:17:21,780 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 22:17:21,781 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-09 22:17:21,922 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 22:17:21,922 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:17:21,925 INFO L255 TraceCheckSpWp]: Trace formula consists of 471 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-09 22:17:21,928 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:17:22,085 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 380 proven. 819 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:17:22,086 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:17:22,496 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 380 proven. 819 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:17:22,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1043809628] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:17:22,496 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:17:22,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 26 [2024-11-09 22:17:22,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043015751] [2024-11-09 22:17:22,497 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:17:22,497 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-09 22:17:22,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:17:22,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-09 22:17:22,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=262, Invalid=388, Unknown=0, NotChecked=0, Total=650 [2024-11-09 22:17:22,498 INFO L87 Difference]: Start difference. First operand 143 states and 146 transitions. Second operand has 26 states, 26 states have (on average 6.384615384615385) internal successors, (166), 26 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:17:22,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:17:22,763 INFO L93 Difference]: Finished difference Result 165 states and 169 transitions. [2024-11-09 22:17:22,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-11-09 22:17:22,766 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 6.384615384615385) internal successors, (166), 26 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 142 [2024-11-09 22:17:22,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:17:22,767 INFO L225 Difference]: With dead ends: 165 [2024-11-09 22:17:22,767 INFO L226 Difference]: Without dead ends: 162 [2024-11-09 22:17:22,768 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 261 SyntacticMatches, 38 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 975 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=762, Invalid=1308, Unknown=0, NotChecked=0, Total=2070 [2024-11-09 22:17:22,768 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 13 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 22:17:22,769 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 282 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 22:17:22,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2024-11-09 22:17:22,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 153. [2024-11-09 22:17:22,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 152 states have (on average 1.0263157894736843) internal successors, (156), 152 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:17:22,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 156 transitions. [2024-11-09 22:17:22,776 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 156 transitions. Word has length 142 [2024-11-09 22:17:22,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:17:22,776 INFO L471 AbstractCegarLoop]: Abstraction has 153 states and 156 transitions. [2024-11-09 22:17:22,776 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 6.384615384615385) internal successors, (166), 26 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:17:22,776 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 156 transitions. [2024-11-09 22:17:22,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-11-09 22:17:22,777 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:17:22,777 INFO L215 NwaCegarLoop]: trace histogram [21, 21, 20, 20, 20, 20, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:17:22,793 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-11-09 22:17:22,977 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:17:22,978 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:17:22,978 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:17:22,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1147917634, now seen corresponding path program 23 times [2024-11-09 22:17:22,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:17:22,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066903821] [2024-11-09 22:17:22,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:17:22,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:17:23,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:17:23,983 INFO L134 CoverageAnalysis]: Checked inductivity of 1390 backedges. 934 proven. 456 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:17:23,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:17:23,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066903821] [2024-11-09 22:17:23,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066903821] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:17:23,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1688196459] [2024-11-09 22:17:23,984 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 22:17:23,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:17:23,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:17:23,986 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 22:17:23,988 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-09 22:17:24,132 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 21 check-sat command(s) [2024-11-09 22:17:24,133 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:17:24,135 INFO L255 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-09 22:17:24,137 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:17:24,942 INFO L134 CoverageAnalysis]: Checked inductivity of 1390 backedges. 1010 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:17:24,943 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:17:25,536 INFO L134 CoverageAnalysis]: Checked inductivity of 1390 backedges. 1010 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:17:25,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1688196459] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:17:25,536 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:17:25,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43, 43] total 68 [2024-11-09 22:17:25,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882473478] [2024-11-09 22:17:25,536 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:17:25,537 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2024-11-09 22:17:25,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:17:25,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2024-11-09 22:17:25,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1060, Invalid=3496, Unknown=0, NotChecked=0, Total=4556 [2024-11-09 22:17:25,539 INFO L87 Difference]: Start difference. First operand 153 states and 156 transitions. Second operand has 68 states, 68 states have (on average 3.985294117647059) internal successors, (271), 68 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:17:26,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:17:26,360 INFO L93 Difference]: Finished difference Result 428 states and 475 transitions. [2024-11-09 22:17:26,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2024-11-09 22:17:26,360 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 3.985294117647059) internal successors, (271), 68 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 152 [2024-11-09 22:17:26,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:17:26,361 INFO L225 Difference]: With dead ends: 428 [2024-11-09 22:17:26,361 INFO L226 Difference]: Without dead ends: 220 [2024-11-09 22:17:26,363 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 242 SyntacticMatches, 37 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3870 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=2886, Invalid=8886, Unknown=0, NotChecked=0, Total=11772 [2024-11-09 22:17:26,364 INFO L432 NwaCegarLoop]: 65 mSDtfsCounter, 268 mSDsluCounter, 644 mSDsCounter, 0 mSdLazyCounter, 522 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 709 SdHoareTripleChecker+Invalid, 617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 22:17:26,364 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 709 Invalid, 617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 522 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 22:17:26,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2024-11-09 22:17:26,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 157. [2024-11-09 22:17:26,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 156 states have (on average 1.0256410256410255) internal successors, (160), 156 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:17:26,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 160 transitions. [2024-11-09 22:17:26,372 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 160 transitions. Word has length 152 [2024-11-09 22:17:26,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:17:26,373 INFO L471 AbstractCegarLoop]: Abstraction has 157 states and 160 transitions. [2024-11-09 22:17:26,373 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 3.985294117647059) internal successors, (271), 68 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:17:26,373 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 160 transitions. [2024-11-09 22:17:26,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-11-09 22:17:26,374 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:17:26,374 INFO L215 NwaCegarLoop]: trace histogram [22, 21, 21, 21, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:17:26,391 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-11-09 22:17:26,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:17:26,575 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:17:26,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:17:26,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1493329028, now seen corresponding path program 24 times [2024-11-09 22:17:26,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:17:26,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132148266] [2024-11-09 22:17:26,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:17:26,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:17:26,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:17:27,252 INFO L134 CoverageAnalysis]: Checked inductivity of 1472 backedges. 420 proven. 1052 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:17:27,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:17:27,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132148266] [2024-11-09 22:17:27,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132148266] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:17:27,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [34019364] [2024-11-09 22:17:27,252 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 22:17:27,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:17:27,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:17:27,254 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 22:17:27,254 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-09 22:17:27,407 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 22 check-sat command(s) [2024-11-09 22:17:27,407 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:17:27,409 INFO L255 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-09 22:17:27,414 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:17:27,596 INFO L134 CoverageAnalysis]: Checked inductivity of 1472 backedges. 462 proven. 1010 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:17:27,596 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:17:28,051 INFO L134 CoverageAnalysis]: Checked inductivity of 1472 backedges. 462 proven. 1010 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:17:28,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [34019364] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:17:28,051 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:17:28,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 28 [2024-11-09 22:17:28,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345260122] [2024-11-09 22:17:28,052 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:17:28,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-09 22:17:28,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:17:28,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-09 22:17:28,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=309, Invalid=447, Unknown=0, NotChecked=0, Total=756 [2024-11-09 22:17:28,054 INFO L87 Difference]: Start difference. First operand 157 states and 160 transitions. Second operand has 28 states, 28 states have (on average 6.428571428571429) internal successors, (180), 28 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:17:28,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:17:28,332 INFO L93 Difference]: Finished difference Result 179 states and 183 transitions. [2024-11-09 22:17:28,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-09 22:17:28,332 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 6.428571428571429) internal successors, (180), 28 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 156 [2024-11-09 22:17:28,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:17:28,333 INFO L225 Difference]: With dead ends: 179 [2024-11-09 22:17:28,333 INFO L226 Difference]: Without dead ends: 176 [2024-11-09 22:17:28,334 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 288 SyntacticMatches, 41 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1142 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=903, Invalid=1547, Unknown=0, NotChecked=0, Total=2450 [2024-11-09 22:17:28,334 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 13 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 22:17:28,335 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 224 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 22:17:28,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2024-11-09 22:17:28,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 167. [2024-11-09 22:17:28,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 166 states have (on average 1.0240963855421688) internal successors, (170), 166 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:17:28,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 170 transitions. [2024-11-09 22:17:28,344 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 170 transitions. Word has length 156 [2024-11-09 22:17:28,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:17:28,344 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 170 transitions. [2024-11-09 22:17:28,344 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 6.428571428571429) internal successors, (180), 28 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:17:28,345 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 170 transitions. [2024-11-09 22:17:28,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-11-09 22:17:28,345 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:17:28,345 INFO L215 NwaCegarLoop]: trace histogram [23, 23, 22, 22, 22, 22, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:17:28,363 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-11-09 22:17:28,546 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-09 22:17:28,546 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:17:28,547 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:17:28,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1320102212, now seen corresponding path program 25 times [2024-11-09 22:17:28,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:17:28,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925311325] [2024-11-09 22:17:28,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:17:28,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:17:28,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:17:29,628 INFO L134 CoverageAnalysis]: Checked inductivity of 1683 backedges. 1137 proven. 546 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:17:29,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:17:29,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925311325] [2024-11-09 22:17:29,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925311325] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:17:29,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [908550503] [2024-11-09 22:17:29,629 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 22:17:29,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:17:29,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:17:29,630 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 22:17:29,631 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-09 22:17:29,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:17:29,779 INFO L255 TraceCheckSpWp]: Trace formula consists of 543 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-09 22:17:29,781 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:17:30,676 INFO L134 CoverageAnalysis]: Checked inductivity of 1683 backedges. 1218 proven. 462 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 22:17:30,676 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:17:31,317 INFO L134 CoverageAnalysis]: Checked inductivity of 1683 backedges. 1218 proven. 462 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 22:17:31,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [908550503] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:17:31,318 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:17:31,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 46, 46] total 71 [2024-11-09 22:17:31,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976233763] [2024-11-09 22:17:31,318 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:17:31,318 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2024-11-09 22:17:31,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:17:31,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2024-11-09 22:17:31,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1131, Invalid=3839, Unknown=0, NotChecked=0, Total=4970 [2024-11-09 22:17:31,320 INFO L87 Difference]: Start difference. First operand 167 states and 170 transitions. Second operand has 71 states, 71 states have (on average 4.0) internal successors, (284), 71 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:17:31,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:17:31,860 INFO L93 Difference]: Finished difference Result 352 states and 400 transitions. [2024-11-09 22:17:31,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-11-09 22:17:31,861 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 4.0) internal successors, (284), 71 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 166 [2024-11-09 22:17:31,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:17:31,862 INFO L225 Difference]: With dead ends: 352 [2024-11-09 22:17:31,862 INFO L226 Difference]: Without dead ends: 235 [2024-11-09 22:17:31,863 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 266 SyntacticMatches, 42 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3187 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=2145, Invalid=6411, Unknown=0, NotChecked=0, Total=8556 [2024-11-09 22:17:31,863 INFO L432 NwaCegarLoop]: 71 mSDtfsCounter, 210 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 464 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 624 SdHoareTripleChecker+Invalid, 549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 22:17:31,863 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 624 Invalid, 549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 464 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 22:17:31,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2024-11-09 22:17:31,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 169. [2024-11-09 22:17:31,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 168 states have (on average 1.0238095238095237) internal successors, (172), 168 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:17:31,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 172 transitions. [2024-11-09 22:17:31,871 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 172 transitions. Word has length 166 [2024-11-09 22:17:31,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:17:31,871 INFO L471 AbstractCegarLoop]: Abstraction has 169 states and 172 transitions. [2024-11-09 22:17:31,871 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 4.0) internal successors, (284), 71 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:17:31,871 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 172 transitions. [2024-11-09 22:17:31,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-11-09 22:17:31,872 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:17:31,873 INFO L215 NwaCegarLoop]: trace histogram [23, 23, 23, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:17:31,892 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-11-09 22:17:32,073 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-09 22:17:32,073 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:17:32,073 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:17:32,074 INFO L85 PathProgramCache]: Analyzing trace with hash -150667589, now seen corresponding path program 26 times [2024-11-09 22:17:32,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:17:32,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602497960] [2024-11-09 22:17:32,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:17:32,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:17:32,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:17:33,100 INFO L134 CoverageAnalysis]: Checked inductivity of 1727 backedges. 1137 proven. 590 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:17:33,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:17:33,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602497960] [2024-11-09 22:17:33,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602497960] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:17:33,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [836370358] [2024-11-09 22:17:33,101 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 22:17:33,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:17:33,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:17:33,102 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 22:17:33,102 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-09 22:17:33,243 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 22:17:33,243 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:17:33,245 INFO L255 TraceCheckSpWp]: Trace formula consists of 553 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-09 22:17:33,248 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:17:33,956 INFO L134 CoverageAnalysis]: Checked inductivity of 1727 backedges. 506 proven. 1221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:17:33,957 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:17:35,170 INFO L134 CoverageAnalysis]: Checked inductivity of 1727 backedges. 506 proven. 1221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:17:35,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [836370358] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:17:35,170 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:17:35,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 26, 26] total 72 [2024-11-09 22:17:35,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109634905] [2024-11-09 22:17:35,170 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:17:35,171 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2024-11-09 22:17:35,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:17:35,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2024-11-09 22:17:35,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=878, Invalid=4234, Unknown=0, NotChecked=0, Total=5112 [2024-11-09 22:17:35,172 INFO L87 Difference]: Start difference. First operand 169 states and 172 transitions. Second operand has 72 states, 72 states have (on average 4.625) internal successors, (333), 72 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:17:37,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:17:37,529 INFO L93 Difference]: Finished difference Result 365 states and 416 transitions. [2024-11-09 22:17:37,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2024-11-09 22:17:37,534 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 4.625) internal successors, (333), 72 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 168 [2024-11-09 22:17:37,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:17:37,535 INFO L225 Difference]: With dead ends: 365 [2024-11-09 22:17:37,535 INFO L226 Difference]: Without dead ends: 246 [2024-11-09 22:17:37,538 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 518 GetRequests, 289 SyntacticMatches, 46 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13706 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=5445, Invalid=28595, Unknown=0, NotChecked=0, Total=34040 [2024-11-09 22:17:37,541 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 460 mSDsluCounter, 672 mSDsCounter, 0 mSdLazyCounter, 1546 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 460 SdHoareTripleChecker+Valid, 724 SdHoareTripleChecker+Invalid, 1683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 1546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 22:17:37,542 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [460 Valid, 724 Invalid, 1683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 1546 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 22:17:37,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2024-11-09 22:17:37,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 176. [2024-11-09 22:17:37,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 175 states have (on average 1.022857142857143) internal successors, (179), 175 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:17:37,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 179 transitions. [2024-11-09 22:17:37,552 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 179 transitions. Word has length 168 [2024-11-09 22:17:37,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:17:37,553 INFO L471 AbstractCegarLoop]: Abstraction has 176 states and 179 transitions. [2024-11-09 22:17:37,553 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 4.625) internal successors, (333), 72 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:17:37,553 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 179 transitions. [2024-11-09 22:17:37,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-11-09 22:17:37,554 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:17:37,554 INFO L215 NwaCegarLoop]: trace histogram [24, 24, 24, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:17:37,572 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2024-11-09 22:17:37,754 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-09 22:17:37,755 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:17:37,755 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:17:37,755 INFO L85 PathProgramCache]: Analyzing trace with hash 1078096592, now seen corresponding path program 27 times [2024-11-09 22:17:37,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:17:37,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978328720] [2024-11-09 22:17:37,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:17:37,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:17:37,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:17:38,858 INFO L134 CoverageAnalysis]: Checked inductivity of 1886 backedges. 1246 proven. 640 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:17:38,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:17:38,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978328720] [2024-11-09 22:17:38,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978328720] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:17:38,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1686353800] [2024-11-09 22:17:38,859 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 22:17:38,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:17:38,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:17:38,861 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 22:17:38,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-09 22:17:39,054 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) [2024-11-09 22:17:39,054 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:17:39,058 INFO L255 TraceCheckSpWp]: Trace formula consists of 576 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-09 22:17:39,061 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:17:40,079 INFO L134 CoverageAnalysis]: Checked inductivity of 1886 backedges. 1334 proven. 552 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:17:40,079 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:17:40,861 INFO L134 CoverageAnalysis]: Checked inductivity of 1886 backedges. 1334 proven. 552 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:17:40,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1686353800] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:17:40,861 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:17:40,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50, 50] total 76 [2024-11-09 22:17:40,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482049770] [2024-11-09 22:17:40,862 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:17:40,862 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2024-11-09 22:17:40,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:17:40,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2024-11-09 22:17:40,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1303, Invalid=4397, Unknown=0, NotChecked=0, Total=5700 [2024-11-09 22:17:40,869 INFO L87 Difference]: Start difference. First operand 176 states and 179 transitions. Second operand has 76 states, 76 states have (on average 3.9342105263157894) internal successors, (299), 76 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:17:41,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:17:41,486 INFO L93 Difference]: Finished difference Result 374 states and 426 transitions. [2024-11-09 22:17:41,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2024-11-09 22:17:41,486 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 3.9342105263157894) internal successors, (299), 76 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 175 [2024-11-09 22:17:41,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:17:41,488 INFO L225 Difference]: With dead ends: 374 [2024-11-09 22:17:41,488 INFO L226 Difference]: Without dead ends: 250 [2024-11-09 22:17:41,489 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 278 SyntacticMatches, 46 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3672 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=2505, Invalid=7395, Unknown=0, NotChecked=0, Total=9900 [2024-11-09 22:17:41,490 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 222 mSDsluCounter, 653 mSDsCounter, 0 mSdLazyCounter, 543 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 730 SdHoareTripleChecker+Invalid, 630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 22:17:41,490 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 730 Invalid, 630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 543 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 22:17:41,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2024-11-09 22:17:41,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 178. [2024-11-09 22:17:41,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 177 states have (on average 1.0225988700564972) internal successors, (181), 177 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:17:41,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 181 transitions. [2024-11-09 22:17:41,500 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 181 transitions. Word has length 175 [2024-11-09 22:17:41,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:17:41,500 INFO L471 AbstractCegarLoop]: Abstraction has 178 states and 181 transitions. [2024-11-09 22:17:41,501 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 3.9342105263157894) internal successors, (299), 76 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:17:41,501 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 181 transitions. [2024-11-09 22:17:41,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-11-09 22:17:41,502 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:17:41,502 INFO L215 NwaCegarLoop]: trace histogram [25, 24, 24, 24, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:17:41,519 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-11-09 22:17:41,702 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:17:41,702 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:17:41,703 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:17:41,703 INFO L85 PathProgramCache]: Analyzing trace with hash -1435379279, now seen corresponding path program 28 times [2024-11-09 22:17:41,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:17:41,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8884182] [2024-11-09 22:17:41,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:17:41,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:17:41,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:17:42,423 INFO L134 CoverageAnalysis]: Checked inductivity of 1934 backedges. 552 proven. 1382 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:17:42,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:17:42,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8884182] [2024-11-09 22:17:42,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8884182] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:17:42,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [7945821] [2024-11-09 22:17:42,424 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 22:17:42,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:17:42,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:17:42,425 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 22:17:42,426 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-09 22:17:42,578 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 22:17:42,578 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:17:42,581 INFO L255 TraceCheckSpWp]: Trace formula consists of 586 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-11-09 22:17:42,583 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:17:42,738 INFO L134 CoverageAnalysis]: Checked inductivity of 1934 backedges. 600 proven. 1334 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:17:42,738 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:17:43,284 INFO L134 CoverageAnalysis]: Checked inductivity of 1934 backedges. 600 proven. 1334 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:17:43,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [7945821] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:17:43,285 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:17:43,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 31 [2024-11-09 22:17:43,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962319024] [2024-11-09 22:17:43,285 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:17:43,285 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-09 22:17:43,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:17:43,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-09 22:17:43,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=387, Invalid=543, Unknown=0, NotChecked=0, Total=930 [2024-11-09 22:17:43,286 INFO L87 Difference]: Start difference. First operand 178 states and 181 transitions. Second operand has 31 states, 31 states have (on average 6.483870967741935) internal successors, (201), 31 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:17:43,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:17:43,599 INFO L93 Difference]: Finished difference Result 200 states and 204 transitions. [2024-11-09 22:17:43,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2024-11-09 22:17:43,599 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 6.483870967741935) internal successors, (201), 31 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2024-11-09 22:17:43,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:17:43,600 INFO L225 Difference]: With dead ends: 200 [2024-11-09 22:17:43,600 INFO L226 Difference]: Without dead ends: 197 [2024-11-09 22:17:43,601 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 428 GetRequests, 326 SyntacticMatches, 48 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1475 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1137, Invalid=1943, Unknown=0, NotChecked=0, Total=3080 [2024-11-09 22:17:43,601 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 13 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 22:17:43,601 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 278 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 22:17:43,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2024-11-09 22:17:43,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 188. [2024-11-09 22:17:43,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 187 states have (on average 1.0213903743315509) internal successors, (191), 187 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:17:43,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 191 transitions. [2024-11-09 22:17:43,611 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 191 transitions. Word has length 177 [2024-11-09 22:17:43,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:17:43,612 INFO L471 AbstractCegarLoop]: Abstraction has 188 states and 191 transitions. [2024-11-09 22:17:43,612 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 6.483870967741935) internal successors, (201), 31 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:17:43,612 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 191 transitions. [2024-11-09 22:17:43,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2024-11-09 22:17:43,613 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:17:43,613 INFO L215 NwaCegarLoop]: trace histogram [26, 26, 25, 25, 25, 25, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:17:43,631 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2024-11-09 22:17:43,814 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:17:43,814 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:17:43,814 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:17:43,814 INFO L85 PathProgramCache]: Analyzing trace with hash 711497393, now seen corresponding path program 29 times [2024-11-09 22:17:43,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:17:43,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307499771] [2024-11-09 22:17:43,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:17:43,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:17:43,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:17:45,153 INFO L134 CoverageAnalysis]: Checked inductivity of 2175 backedges. 1479 proven. 696 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:17:45,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:17:45,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307499771] [2024-11-09 22:17:45,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307499771] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:17:45,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [630753210] [2024-11-09 22:17:45,153 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 22:17:45,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:17:45,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:17:45,154 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 22:17:45,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-09 22:17:45,333 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 26 check-sat command(s) [2024-11-09 22:17:45,333 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:17:45,336 INFO L255 TraceCheckSpWp]: Trace formula consists of 612 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-11-09 22:17:45,338 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:17:46,486 INFO L134 CoverageAnalysis]: Checked inductivity of 2175 backedges. 1575 proven. 600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:17:46,486 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:17:47,354 INFO L134 CoverageAnalysis]: Checked inductivity of 2175 backedges. 1575 proven. 600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:17:47,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [630753210] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:17:47,354 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:17:47,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53, 53] total 83 [2024-11-09 22:17:47,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63890255] [2024-11-09 22:17:47,355 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:17:47,355 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2024-11-09 22:17:47,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:17:47,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2024-11-09 22:17:47,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1570, Invalid=5236, Unknown=0, NotChecked=0, Total=6806 [2024-11-09 22:17:47,356 INFO L87 Difference]: Start difference. First operand 188 states and 191 transitions. Second operand has 83 states, 83 states have (on average 3.9879518072289155) internal successors, (331), 83 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:17:48,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:17:48,525 INFO L93 Difference]: Finished difference Result 528 states and 585 transitions. [2024-11-09 22:17:48,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2024-11-09 22:17:48,525 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 83 states have (on average 3.9879518072289155) internal successors, (331), 83 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 187 [2024-11-09 22:17:48,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:17:48,527 INFO L225 Difference]: With dead ends: 528 [2024-11-09 22:17:48,528 INFO L226 Difference]: Without dead ends: 270 [2024-11-09 22:17:48,529 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 476 GetRequests, 297 SyntacticMatches, 47 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5905 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=4351, Invalid=13471, Unknown=0, NotChecked=0, Total=17822 [2024-11-09 22:17:48,529 INFO L432 NwaCegarLoop]: 80 mSDtfsCounter, 360 mSDsluCounter, 946 mSDsCounter, 0 mSdLazyCounter, 749 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 1026 SdHoareTripleChecker+Invalid, 879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 749 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 22:17:48,530 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [360 Valid, 1026 Invalid, 879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 749 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 22:17:48,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2024-11-09 22:17:48,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 192. [2024-11-09 22:17:48,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 191 states have (on average 1.0209424083769634) internal successors, (195), 191 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:17:48,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 195 transitions. [2024-11-09 22:17:48,541 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 195 transitions. Word has length 187 [2024-11-09 22:17:48,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:17:48,542 INFO L471 AbstractCegarLoop]: Abstraction has 192 states and 195 transitions. [2024-11-09 22:17:48,542 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 83 states have (on average 3.9879518072289155) internal successors, (331), 83 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:17:48,542 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 195 transitions. [2024-11-09 22:17:48,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2024-11-09 22:17:48,543 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:17:48,543 INFO L215 NwaCegarLoop]: trace histogram [27, 26, 26, 26, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:17:48,562 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-11-09 22:17:48,743 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:17:48,744 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:17:48,744 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:17:48,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1844772147, now seen corresponding path program 30 times [2024-11-09 22:17:48,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:17:48,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267447719] [2024-11-09 22:17:48,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:17:48,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:17:48,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:17:49,512 INFO L134 CoverageAnalysis]: Checked inductivity of 2277 backedges. 650 proven. 1627 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:17:49,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:17:49,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267447719] [2024-11-09 22:17:49,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267447719] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:17:49,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965845900] [2024-11-09 22:17:49,513 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 22:17:49,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:17:49,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:17:49,514 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 22:17:49,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-09 22:17:49,698 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 27 check-sat command(s) [2024-11-09 22:17:49,699 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:17:49,701 INFO L255 TraceCheckSpWp]: Trace formula consists of 632 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-11-09 22:17:49,703 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:17:49,874 INFO L134 CoverageAnalysis]: Checked inductivity of 2277 backedges. 702 proven. 1575 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:17:49,874 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:17:50,481 INFO L134 CoverageAnalysis]: Checked inductivity of 2277 backedges. 702 proven. 1575 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:17:50,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1965845900] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:17:50,482 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:17:50,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 30] total 33 [2024-11-09 22:17:50,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251015135] [2024-11-09 22:17:50,482 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:17:50,482 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-09 22:17:50,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:17:50,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-09 22:17:50,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=444, Invalid=612, Unknown=0, NotChecked=0, Total=1056 [2024-11-09 22:17:50,483 INFO L87 Difference]: Start difference. First operand 192 states and 195 transitions. Second operand has 33 states, 33 states have (on average 6.515151515151516) internal successors, (215), 33 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:17:50,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:17:50,838 INFO L93 Difference]: Finished difference Result 214 states and 218 transitions. [2024-11-09 22:17:50,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2024-11-09 22:17:50,839 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 6.515151515151516) internal successors, (215), 33 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 191 [2024-11-09 22:17:50,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:17:50,839 INFO L225 Difference]: With dead ends: 214 [2024-11-09 22:17:50,840 INFO L226 Difference]: Without dead ends: 211 [2024-11-09 22:17:50,840 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 353 SyntacticMatches, 51 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1677 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1308, Invalid=2232, Unknown=0, NotChecked=0, Total=3540 [2024-11-09 22:17:50,840 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 17 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 323 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 22:17:50,841 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 323 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 22:17:50,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2024-11-09 22:17:50,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 202. [2024-11-09 22:17:50,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 201 states have (on average 1.0199004975124377) internal successors, (205), 201 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:17:50,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 205 transitions. [2024-11-09 22:17:50,851 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 205 transitions. Word has length 191 [2024-11-09 22:17:50,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:17:50,851 INFO L471 AbstractCegarLoop]: Abstraction has 202 states and 205 transitions. [2024-11-09 22:17:50,851 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 6.515151515151516) internal successors, (215), 33 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:17:50,851 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 205 transitions. [2024-11-09 22:17:50,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2024-11-09 22:17:50,852 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:17:50,852 INFO L215 NwaCegarLoop]: trace histogram [28, 28, 27, 27, 27, 27, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:17:50,870 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2024-11-09 22:17:51,052 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-11-09 22:17:51,053 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:17:51,053 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:17:51,053 INFO L85 PathProgramCache]: Analyzing trace with hash -2034319437, now seen corresponding path program 31 times [2024-11-09 22:17:51,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:17:51,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333565611] [2024-11-09 22:17:51,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:17:51,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:17:51,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:17:52,412 INFO L134 CoverageAnalysis]: Checked inductivity of 2538 backedges. 1732 proven. 806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:17:52,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:17:52,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333565611] [2024-11-09 22:17:52,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333565611] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:17:52,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1709087327] [2024-11-09 22:17:52,413 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 22:17:52,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:17:52,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:17:52,414 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 22:17:52,415 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-09 22:17:52,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:17:52,589 INFO L255 TraceCheckSpWp]: Trace formula consists of 658 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-11-09 22:17:52,592 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:17:53,843 INFO L134 CoverageAnalysis]: Checked inductivity of 2538 backedges. 1833 proven. 702 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 22:17:53,844 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:17:54,779 INFO L134 CoverageAnalysis]: Checked inductivity of 2538 backedges. 1833 proven. 702 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 22:17:54,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1709087327] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:17:54,780 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:17:54,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 56, 56] total 86 [2024-11-09 22:17:54,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511225917] [2024-11-09 22:17:54,780 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:17:54,781 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2024-11-09 22:17:54,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:17:54,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2024-11-09 22:17:54,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1656, Invalid=5654, Unknown=0, NotChecked=0, Total=7310 [2024-11-09 22:17:54,782 INFO L87 Difference]: Start difference. First operand 202 states and 205 transitions. Second operand has 86 states, 86 states have (on average 4.0) internal successors, (344), 86 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:17:55,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:17:55,552 INFO L93 Difference]: Finished difference Result 427 states and 485 transitions. [2024-11-09 22:17:55,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2024-11-09 22:17:55,552 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 86 states have (on average 4.0) internal successors, (344), 86 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 201 [2024-11-09 22:17:55,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:17:55,553 INFO L225 Difference]: With dead ends: 427 [2024-11-09 22:17:55,553 INFO L226 Difference]: Without dead ends: 285 [2024-11-09 22:17:55,554 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 484 GetRequests, 321 SyntacticMatches, 52 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4727 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=3170, Invalid=9486, Unknown=0, NotChecked=0, Total=12656 [2024-11-09 22:17:55,555 INFO L432 NwaCegarLoop]: 86 mSDtfsCounter, 308 mSDsluCounter, 865 mSDsCounter, 0 mSdLazyCounter, 701 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 951 SdHoareTripleChecker+Invalid, 830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 22:17:55,555 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [308 Valid, 951 Invalid, 830 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 701 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 22:17:55,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2024-11-09 22:17:55,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 204. [2024-11-09 22:17:55,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 203 states have (on average 1.019704433497537) internal successors, (207), 203 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:17:55,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 207 transitions. [2024-11-09 22:17:55,565 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 207 transitions. Word has length 201 [2024-11-09 22:17:55,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:17:55,566 INFO L471 AbstractCegarLoop]: Abstraction has 204 states and 207 transitions. [2024-11-09 22:17:55,566 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 86 states have (on average 4.0) internal successors, (344), 86 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:17:55,566 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 207 transitions. [2024-11-09 22:17:55,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2024-11-09 22:17:55,567 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:17:55,567 INFO L215 NwaCegarLoop]: trace histogram [28, 28, 28, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:17:55,580 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2024-11-09 22:17:55,767 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:17:55,767 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:17:55,768 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:17:55,768 INFO L85 PathProgramCache]: Analyzing trace with hash 823811924, now seen corresponding path program 32 times [2024-11-09 22:17:55,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:17:55,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615736122] [2024-11-09 22:17:55,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:17:55,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:17:55,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:17:57,100 INFO L134 CoverageAnalysis]: Checked inductivity of 2592 backedges. 1732 proven. 860 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:17:57,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:17:57,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615736122] [2024-11-09 22:17:57,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615736122] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:17:57,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1485726516] [2024-11-09 22:17:57,101 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 22:17:57,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:17:57,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:17:57,102 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 22:17:57,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-09 22:17:57,300 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 22:17:57,300 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:17:57,305 INFO L255 TraceCheckSpWp]: Trace formula consists of 668 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-11-09 22:17:57,308 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:17:58,331 INFO L134 CoverageAnalysis]: Checked inductivity of 2592 backedges. 756 proven. 1836 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:17:58,331 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:18:00,095 INFO L134 CoverageAnalysis]: Checked inductivity of 2592 backedges. 756 proven. 1836 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:18:00,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1485726516] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:18:00,095 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:18:00,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 31, 31] total 87 [2024-11-09 22:18:00,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752640841] [2024-11-09 22:18:00,096 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:18:00,096 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 87 states [2024-11-09 22:18:00,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:18:00,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2024-11-09 22:18:00,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1278, Invalid=6204, Unknown=0, NotChecked=0, Total=7482 [2024-11-09 22:18:00,097 INFO L87 Difference]: Start difference. First operand 204 states and 207 transitions. Second operand has 87 states, 87 states have (on average 4.632183908045977) internal successors, (403), 87 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:18:02,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:18:02,837 INFO L93 Difference]: Finished difference Result 440 states and 501 transitions. [2024-11-09 22:18:02,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 168 states. [2024-11-09 22:18:02,838 INFO L78 Accepts]: Start accepts. Automaton has has 87 states, 87 states have (on average 4.632183908045977) internal successors, (403), 87 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 203 [2024-11-09 22:18:02,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:18:02,839 INFO L225 Difference]: With dead ends: 440 [2024-11-09 22:18:02,839 INFO L226 Difference]: Without dead ends: 296 [2024-11-09 22:18:02,843 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 628 GetRequests, 349 SyntacticMatches, 56 SemanticMatches, 223 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20601 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=7960, Invalid=42440, Unknown=0, NotChecked=0, Total=50400 [2024-11-09 22:18:02,843 INFO L432 NwaCegarLoop]: 62 mSDtfsCounter, 546 mSDsluCounter, 781 mSDsCounter, 0 mSdLazyCounter, 1838 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 546 SdHoareTripleChecker+Valid, 843 SdHoareTripleChecker+Invalid, 2003 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 1838 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 22:18:02,844 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [546 Valid, 843 Invalid, 2003 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [165 Valid, 1838 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 22:18:02,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2024-11-09 22:18:02,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 211. [2024-11-09 22:18:02,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 210 states have (on average 1.019047619047619) internal successors, (214), 210 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:18:02,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 214 transitions. [2024-11-09 22:18:02,857 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 214 transitions. Word has length 203 [2024-11-09 22:18:02,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:18:02,857 INFO L471 AbstractCegarLoop]: Abstraction has 211 states and 214 transitions. [2024-11-09 22:18:02,857 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 87 states, 87 states have (on average 4.632183908045977) internal successors, (403), 87 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:18:02,858 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 214 transitions. [2024-11-09 22:18:02,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2024-11-09 22:18:02,858 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:18:02,858 INFO L215 NwaCegarLoop]: trace histogram [29, 29, 29, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:18:02,877 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2024-11-09 22:18:03,059 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:18:03,059 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:18:03,059 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:18:03,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1418618891, now seen corresponding path program 33 times [2024-11-09 22:18:03,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:18:03,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954851040] [2024-11-09 22:18:03,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:18:03,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:18:03,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:18:04,520 INFO L134 CoverageAnalysis]: Checked inductivity of 2786 backedges. 1866 proven. 920 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:18:04,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:18:04,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954851040] [2024-11-09 22:18:04,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954851040] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:18:04,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1429650565] [2024-11-09 22:18:04,521 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 22:18:04,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:18:04,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:18:04,523 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 22:18:04,525 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-11-09 22:18:04,758 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 29 check-sat command(s) [2024-11-09 22:18:04,758 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:18:04,761 INFO L255 TraceCheckSpWp]: Trace formula consists of 691 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-11-09 22:18:04,763 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:18:06,155 INFO L134 CoverageAnalysis]: Checked inductivity of 2786 backedges. 1974 proven. 812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:18:06,155 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:18:07,317 INFO L134 CoverageAnalysis]: Checked inductivity of 2786 backedges. 1974 proven. 812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:18:07,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1429650565] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:18:07,318 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:18:07,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60, 60] total 91 [2024-11-09 22:18:07,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794999464] [2024-11-09 22:18:07,318 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:18:07,318 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 91 states [2024-11-09 22:18:07,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:18:07,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2024-11-09 22:18:07,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1863, Invalid=6327, Unknown=0, NotChecked=0, Total=8190 [2024-11-09 22:18:07,320 INFO L87 Difference]: Start difference. First operand 211 states and 214 transitions. Second operand has 91 states, 91 states have (on average 3.9450549450549453) internal successors, (359), 91 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:18:08,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:18:08,158 INFO L93 Difference]: Finished difference Result 449 states and 511 transitions. [2024-11-09 22:18:08,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2024-11-09 22:18:08,158 INFO L78 Accepts]: Start accepts. Automaton has has 91 states, 91 states have (on average 3.9450549450549453) internal successors, (359), 91 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 210 [2024-11-09 22:18:08,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:18:08,159 INFO L225 Difference]: With dead ends: 449 [2024-11-09 22:18:08,159 INFO L226 Difference]: Without dead ends: 300 [2024-11-09 22:18:08,161 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 507 GetRequests, 333 SyntacticMatches, 56 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5312 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=3605, Invalid=10675, Unknown=0, NotChecked=0, Total=14280 [2024-11-09 22:18:08,161 INFO L432 NwaCegarLoop]: 92 mSDtfsCounter, 318 mSDsluCounter, 891 mSDsCounter, 0 mSdLazyCounter, 710 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 983 SdHoareTripleChecker+Invalid, 840 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 710 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 22:18:08,162 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [318 Valid, 983 Invalid, 840 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 710 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 22:18:08,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2024-11-09 22:18:08,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 213. [2024-11-09 22:18:08,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 212 states have (on average 1.0188679245283019) internal successors, (216), 212 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:18:08,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 216 transitions. [2024-11-09 22:18:08,172 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 216 transitions. Word has length 210 [2024-11-09 22:18:08,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:18:08,173 INFO L471 AbstractCegarLoop]: Abstraction has 213 states and 216 transitions. [2024-11-09 22:18:08,173 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 91 states, 91 states have (on average 3.9450549450549453) internal successors, (359), 91 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:18:08,173 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 216 transitions. [2024-11-09 22:18:08,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2024-11-09 22:18:08,174 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:18:08,174 INFO L215 NwaCegarLoop]: trace histogram [30, 29, 29, 29, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:18:08,189 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2024-11-09 22:18:08,374 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-11-09 22:18:08,375 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:18:08,375 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:18:08,375 INFO L85 PathProgramCache]: Analyzing trace with hash -1226244748, now seen corresponding path program 34 times [2024-11-09 22:18:08,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:18:08,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204573666] [2024-11-09 22:18:08,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:18:08,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:18:08,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:18:09,319 INFO L134 CoverageAnalysis]: Checked inductivity of 2844 backedges. 812 proven. 2032 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:18:09,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:18:09,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204573666] [2024-11-09 22:18:09,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204573666] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:18:09,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1399425450] [2024-11-09 22:18:09,319 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 22:18:09,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:18:09,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:18:09,322 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 22:18:09,323 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-11-09 22:18:09,539 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 22:18:09,539 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:18:09,542 INFO L255 TraceCheckSpWp]: Trace formula consists of 701 conjuncts, 61 conjuncts are in the unsatisfiable core [2024-11-09 22:18:09,544 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:18:09,739 INFO L134 CoverageAnalysis]: Checked inductivity of 2844 backedges. 870 proven. 1974 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:18:09,739 INFO L311 TraceCheckSpWp]: Computing backward predicates...