./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-invgen/half_2.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/half_2.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 0b362a98d328467ff4a069dbed2be3429090ca070e60d49c76297e4bb94402b7 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-09 22:16:45,120 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 22:16:45,187 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 22:16:45,193 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 22:16:45,194 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 22:16:45,225 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 22:16:45,226 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 22:16:45,227 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 22:16:45,227 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 22:16:45,229 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 22:16:45,229 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 22:16:45,230 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 22:16:45,230 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 22:16:45,232 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 22:16:45,232 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 22:16:45,232 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 22:16:45,233 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 22:16:45,233 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 22:16:45,233 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 22:16:45,233 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 22:16:45,234 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 22:16:45,236 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 22:16:45,237 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 22:16:45,237 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 22:16:45,237 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 22:16:45,237 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 22:16:45,237 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 22:16:45,238 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 22:16:45,238 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-09 22:16:45,238 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 22:16:45,238 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 22:16:45,239 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 22:16:45,239 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 22:16:45,239 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 22:16:45,239 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 22:16:45,239 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 22:16:45,239 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 22:16:45,240 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 22:16:45,240 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 22:16:45,240 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 22:16:45,240 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 22:16:45,241 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 22:16:45,241 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0b362a98d328467ff4a069dbed2be3429090ca070e60d49c76297e4bb94402b7 [2024-11-09 22:16:45,490 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 22:16:45,514 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 22:16:45,518 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 22:16:45,519 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 22:16:45,520 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 22:16:45,521 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-invgen/half_2.i [2024-11-09 22:16:46,955 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 22:16:47,156 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 22:16:47,158 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/half_2.i [2024-11-09 22:16:47,172 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff7b7a56a/a1083d027b7448a783ea199315efde81/FLAGfda9fb3fd [2024-11-09 22:16:47,188 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff7b7a56a/a1083d027b7448a783ea199315efde81 [2024-11-09 22:16:47,193 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 22:16:47,194 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 22:16:47,197 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 22:16:47,198 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 22:16:47,203 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 22:16:47,203 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:16:47" (1/1) ... [2024-11-09 22:16:47,204 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5dc37577 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:16:47, skipping insertion in model container [2024-11-09 22:16:47,204 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:16:47" (1/1) ... [2024-11-09 22:16:47,225 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 22:16:47,449 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/half_2.i[893,906] [2024-11-09 22:16:47,461 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 22:16:47,471 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 22:16:47,483 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/half_2.i[893,906] [2024-11-09 22:16:47,489 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 22:16:47,505 INFO L204 MainTranslator]: Completed translation [2024-11-09 22:16:47,505 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:16:47 WrapperNode [2024-11-09 22:16:47,505 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 22:16:47,506 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 22:16:47,507 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 22:16:47,507 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 22:16:47,513 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 22:16:47,519 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 22:16:47,535 INFO L138 Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 46 [2024-11-09 22:16:47,537 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 22:16:47,538 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 22:16:47,538 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 22:16:47,538 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 22:16:47,547 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 22:16:47,547 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 22:16:47,548 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 22:16:47,556 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 22:16:47,557 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 22:16:47,557 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 22:16:47,559 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 22:16:47,559 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 22:16:47,561 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 22:16:47,564 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 22:16:47,565 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 22:16:47,566 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-09 22:16:47,566 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-09 22:16:47,566 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-09 22:16:47,567 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 22:16:47,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 22:16:47,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:16:47,599 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 22:16:47,601 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 22:16:47,637 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 22:16:47,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 22:16:47,638 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 22:16:47,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 22:16:47,690 INFO L256 CfgBuilder]: Building ICFG [2024-11-09 22:16:47,691 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 22:16:47,794 INFO L? ?]: Removed 9 outVars from TransFormulas that were not future-live. [2024-11-09 22:16:47,794 INFO L307 CfgBuilder]: Performing block encoding [2024-11-09 22:16:47,806 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 22:16:47,806 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 22:16:47,806 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 10:16:47 BoogieIcfgContainer [2024-11-09 22:16:47,806 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-09 22:16:47,810 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 22:16:47,810 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 22:16:47,814 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 22:16:47,814 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 10:16:47" (1/3) ... [2024-11-09 22:16:47,815 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c66a383 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 22:16:47,815 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 22:16:47,817 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c66a383 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 22:16:47,817 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 22:16:47,818 INFO L112 eAbstractionObserver]: Analyzing ICFG half_2.i [2024-11-09 22:16:47,838 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 22:16:47,839 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 22:16:47,890 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 22:16:47,895 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;@1a8c42de, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 22:16:47,895 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 22:16:47,898 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 16 states have (on average 1.4375) internal successors, (23), 17 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 22:16:47,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-09 22:16:47,903 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:16:47,903 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:16:47,904 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:16:47,908 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:16:47,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1013777875, now seen corresponding path program 1 times [2024-11-09 22:16:47,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:16:47,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332446198] [2024-11-09 22:16:47,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:16:47,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:16:47,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:48,039 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 22:16:48,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:16:48,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332446198] [2024-11-09 22:16:48,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332446198] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 22:16:48,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 22:16:48,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 22:16:48,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315186288] [2024-11-09 22:16:48,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 22:16:48,047 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 22:16:48,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:16:48,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 22:16:48,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 22:16:48,068 INFO L87 Difference]: Start difference. First operand has 18 states, 16 states have (on average 1.4375) internal successors, (23), 17 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) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 22:16:48,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:16:48,076 INFO L93 Difference]: Finished difference Result 30 states and 37 transitions. [2024-11-09 22:16:48,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 22:16:48,078 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 10 [2024-11-09 22:16:48,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:16:48,084 INFO L225 Difference]: With dead ends: 30 [2024-11-09 22:16:48,084 INFO L226 Difference]: Without dead ends: 13 [2024-11-09 22:16:48,086 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 22:16:48,090 INFO L432 NwaCegarLoop]: 19 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, 19 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 22:16:48,091 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 22:16:48,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2024-11-09 22:16:48,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2024-11-09 22:16:48,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 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 22:16:48,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2024-11-09 22:16:48,112 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 10 [2024-11-09 22:16:48,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:16:48,113 INFO L471 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2024-11-09 22:16:48,113 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 22:16:48,113 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2024-11-09 22:16:48,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-09 22:16:48,113 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:16:48,114 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:16:48,114 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 22:16:48,114 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:16:48,114 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:16:48,115 INFO L85 PathProgramCache]: Analyzing trace with hash 1452871857, now seen corresponding path program 1 times [2024-11-09 22:16:48,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:16:48,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542683966] [2024-11-09 22:16:48,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:16:48,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:16:48,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:48,428 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 22:16:48,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:16:48,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542683966] [2024-11-09 22:16:48,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542683966] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 22:16:48,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 22:16:48,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 22:16:48,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108350451] [2024-11-09 22:16:48,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 22:16:48,430 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 22:16:48,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:16:48,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 22:16:48,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 22:16:48,431 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 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 22:16:48,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:16:48,494 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2024-11-09 22:16:48,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 22:16:48,494 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 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 11 [2024-11-09 22:16:48,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:16:48,496 INFO L225 Difference]: With dead ends: 23 [2024-11-09 22:16:48,496 INFO L226 Difference]: Without dead ends: 20 [2024-11-09 22:16:48,497 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-09 22:16:48,498 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 4 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 22:16:48,499 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 26 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 22:16:48,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2024-11-09 22:16:48,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2024-11-09 22:16:48,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 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 22:16:48,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2024-11-09 22:16:48,508 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 11 [2024-11-09 22:16:48,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:16:48,508 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2024-11-09 22:16:48,508 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 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 22:16:48,509 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2024-11-09 22:16:48,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-09 22:16:48,510 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:16:48,511 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:16:48,511 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 22:16:48,511 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:16:48,512 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:16:48,512 INFO L85 PathProgramCache]: Analyzing trace with hash 496315760, now seen corresponding path program 1 times [2024-11-09 22:16:48,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:16:48,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083076101] [2024-11-09 22:16:48,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:16:48,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:16:48,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:48,732 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:16:48,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:16:48,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083076101] [2024-11-09 22:16:48,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083076101] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:16:48,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [869800595] [2024-11-09 22:16:48,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:16:48,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:16:48,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:16:48,738 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 22:16:48,740 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 22:16:48,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:48,801 INFO L255 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 22:16:48,806 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:16:48,991 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:16:48,992 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:16:49,255 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:16:49,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [869800595] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:16:49,256 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:16:49,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-11-09 22:16:49,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233070017] [2024-11-09 22:16:49,256 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:16:49,257 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 22:16:49,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:16:49,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 22:16:49,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-11-09 22:16:49,259 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:16:49,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:16:49,523 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2024-11-09 22:16:49,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-09 22:16:49,525 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-09 22:16:49,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:16:49,526 INFO L225 Difference]: With dead ends: 39 [2024-11-09 22:16:49,527 INFO L226 Difference]: Without dead ends: 36 [2024-11-09 22:16:49,527 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2024-11-09 22:16:49,530 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 21 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 22:16:49,531 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 71 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 22:16:49,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-09 22:16:49,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 28. [2024-11-09 22:16:49,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 27 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 22:16:49,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2024-11-09 22:16:49,541 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 13 [2024-11-09 22:16:49,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:16:49,541 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2024-11-09 22:16:49,541 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:16:49,541 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2024-11-09 22:16:49,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-09 22:16:49,543 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:16:49,543 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:16:49,561 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-09 22:16:49,743 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:16:49,744 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:16:49,744 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:16:49,744 INFO L85 PathProgramCache]: Analyzing trace with hash 2049215577, now seen corresponding path program 1 times [2024-11-09 22:16:49,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:16:49,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500549612] [2024-11-09 22:16:49,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:16:49,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:16:49,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:49,922 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:16:49,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:16:49,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500549612] [2024-11-09 22:16:49,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500549612] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:16:49,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1426780584] [2024-11-09 22:16:49,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:16:49,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:16:49,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:16:49,929 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 22:16:49,930 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 22:16:49,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:49,970 INFO L255 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 22:16:49,971 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:16:50,020 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 22:16:50,020 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 22:16:50,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1426780584] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 22:16:50,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 22:16:50,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2024-11-09 22:16:50,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71076477] [2024-11-09 22:16:50,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 22:16:50,021 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 22:16:50,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:16:50,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 22:16:50,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-11-09 22:16:50,022 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 22:16:50,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:16:50,057 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2024-11-09 22:16:50,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 22:16:50,057 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 15 [2024-11-09 22:16:50,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:16:50,058 INFO L225 Difference]: With dead ends: 39 [2024-11-09 22:16:50,058 INFO L226 Difference]: Without dead ends: 28 [2024-11-09 22:16:50,058 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-09 22:16:50,060 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 1 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 22:16:50,061 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 36 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 22:16:50,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-11-09 22:16:50,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2024-11-09 22:16:50,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 27 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:16:50,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2024-11-09 22:16:50,066 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 15 [2024-11-09 22:16:50,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:16:50,066 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2024-11-09 22:16:50,066 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 22:16:50,066 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2024-11-09 22:16:50,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-09 22:16:50,067 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:16:50,067 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:16:50,084 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 22:16:50,267 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-09 22:16:50,268 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:16:50,268 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:16:50,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1810973778, now seen corresponding path program 2 times [2024-11-09 22:16:50,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:16:50,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523386539] [2024-11-09 22:16:50,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:16:50,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:16:50,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:50,381 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:16:50,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:16:50,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523386539] [2024-11-09 22:16:50,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523386539] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:16:50,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2120139681] [2024-11-09 22:16:50,381 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 22:16:50,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:16:50,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:16:50,384 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 22:16:50,385 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 22:16:50,424 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 22:16:50,424 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:16:50,425 INFO L255 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-09 22:16:50,426 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:16:50,505 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:16:50,505 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:16:50,593 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:16:50,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2120139681] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:16:50,594 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:16:50,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-11-09 22:16:50,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388352277] [2024-11-09 22:16:50,594 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:16:50,595 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 22:16:50,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:16:50,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 22:16:50,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2024-11-09 22:16:50,596 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 15 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:16:50,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:16:50,700 INFO L93 Difference]: Finished difference Result 42 states and 46 transitions. [2024-11-09 22:16:50,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 22:16:50,700 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 15 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2024-11-09 22:16:50,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:16:50,701 INFO L225 Difference]: With dead ends: 42 [2024-11-09 22:16:50,701 INFO L226 Difference]: Without dead ends: 39 [2024-11-09 22:16:50,701 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2024-11-09 22:16:50,702 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 6 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 22:16:50,703 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 98 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 22:16:50,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-11-09 22:16:50,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 27. [2024-11-09 22:16:50,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.1538461538461537) internal successors, (30), 26 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 22:16:50,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2024-11-09 22:16:50,709 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 17 [2024-11-09 22:16:50,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:16:50,709 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2024-11-09 22:16:50,709 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 15 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:16:50,709 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2024-11-09 22:16:50,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-09 22:16:50,710 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:16:50,710 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:16:50,730 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 22:16:50,910 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:16:50,911 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:16:50,911 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:16:50,912 INFO L85 PathProgramCache]: Analyzing trace with hash 947094295, now seen corresponding path program 1 times [2024-11-09 22:16:50,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:16:50,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095731559] [2024-11-09 22:16:50,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:16:50,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:16:50,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:51,184 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:16:51,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:16:51,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095731559] [2024-11-09 22:16:51,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095731559] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:16:51,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1725253636] [2024-11-09 22:16:51,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:16:51,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:16:51,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:16:51,187 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 22:16:51,190 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 22:16:51,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:51,232 INFO L255 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-09 22:16:51,234 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:16:51,382 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:16:51,383 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:16:51,707 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:16:51,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1725253636] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:16:51,708 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:16:51,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 18 [2024-11-09 22:16:51,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285880088] [2024-11-09 22:16:51,708 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:16:51,709 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-09 22:16:51,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:16:51,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-09 22:16:51,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2024-11-09 22:16:51,710 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 18 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 18 states have internal predecessors, (44), 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 22:16:52,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:16:52,036 INFO L93 Difference]: Finished difference Result 60 states and 66 transitions. [2024-11-09 22:16:52,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-09 22:16:52,037 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 18 states have internal predecessors, (44), 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 22:16:52,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:16:52,037 INFO L225 Difference]: With dead ends: 60 [2024-11-09 22:16:52,037 INFO L226 Difference]: Without dead ends: 44 [2024-11-09 22:16:52,038 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=128, Invalid=522, Unknown=0, NotChecked=0, Total=650 [2024-11-09 22:16:52,039 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 20 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 22:16:52,039 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 143 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 22:16:52,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-11-09 22:16:52,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 26. [2024-11-09 22:16:52,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.12) internal successors, (28), 25 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:16:52,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2024-11-09 22:16:52,044 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 19 [2024-11-09 22:16:52,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:16:52,044 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2024-11-09 22:16:52,045 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 18 states have internal predecessors, (44), 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 22:16:52,045 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2024-11-09 22:16:52,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-09 22:16:52,045 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:16:52,045 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:16:52,062 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 22:16:52,247 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:16:52,247 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:16:52,248 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:16:52,248 INFO L85 PathProgramCache]: Analyzing trace with hash -722935360, now seen corresponding path program 2 times [2024-11-09 22:16:52,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:16:52,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926571441] [2024-11-09 22:16:52,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:16:52,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:16:52,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:52,389 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:16:52,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:16:52,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926571441] [2024-11-09 22:16:52,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926571441] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:16:52,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1724590191] [2024-11-09 22:16:52,390 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 22:16:52,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:16:52,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:16:52,392 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 22:16:52,394 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 22:16:52,436 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 22:16:52,436 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:16:52,436 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 22:16:52,437 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:16:52,561 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:16:52,561 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:16:52,813 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:16:52,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1724590191] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:16:52,814 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:16:52,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 18 [2024-11-09 22:16:52,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357154119] [2024-11-09 22:16:52,814 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:16:52,814 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-09 22:16:52,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:16:52,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-09 22:16:52,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2024-11-09 22:16:52,816 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand has 18 states, 18 states have (on average 2.5) internal successors, (45), 18 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 22:16:52,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:16:52,870 INFO L93 Difference]: Finished difference Result 41 states and 43 transitions. [2024-11-09 22:16:52,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 22:16:52,871 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.5) internal successors, (45), 18 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 22:16:52,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:16:52,871 INFO L225 Difference]: With dead ends: 41 [2024-11-09 22:16:52,871 INFO L226 Difference]: Without dead ends: 26 [2024-11-09 22:16:52,872 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2024-11-09 22:16:52,872 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 2 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 22:16:52,872 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 68 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 22:16:52,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-11-09 22:16:52,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2024-11-09 22:16:52,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.08) internal successors, (27), 25 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:16:52,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2024-11-09 22:16:52,877 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 21 [2024-11-09 22:16:52,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:16:52,878 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2024-11-09 22:16:52,878 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.5) internal successors, (45), 18 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 22:16:52,878 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2024-11-09 22:16:52,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-09 22:16:52,879 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:16:52,879 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:16:52,894 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 22:16:53,083 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:16:53,084 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:16:53,084 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:16:53,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1601744386, now seen corresponding path program 3 times [2024-11-09 22:16:53,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:16:53,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707587943] [2024-11-09 22:16:53,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:16:53,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:16:53,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:53,340 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:16:53,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:16:53,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707587943] [2024-11-09 22:16:53,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707587943] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:16:53,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [593280348] [2024-11-09 22:16:53,340 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 22:16:53,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:16:53,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:16:53,343 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 22:16:53,344 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 22:16:53,388 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-09 22:16:53,388 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:16:53,390 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-09 22:16:53,393 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:16:53,585 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:16:53,585 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:16:53,984 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:16:53,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [593280348] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:16:53,984 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:16:53,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 23 [2024-11-09 22:16:53,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351620] [2024-11-09 22:16:53,985 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:16:53,985 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-09 22:16:53,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:16:53,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-09 22:16:53,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=413, Unknown=0, NotChecked=0, Total=506 [2024-11-09 22:16:53,986 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand has 23 states, 23 states have (on average 2.608695652173913) internal successors, (60), 23 states have internal predecessors, (60), 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 22:16:54,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:16:54,410 INFO L93 Difference]: Finished difference Result 68 states and 75 transitions. [2024-11-09 22:16:54,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-09 22:16:54,413 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.608695652173913) internal successors, (60), 23 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2024-11-09 22:16:54,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:16:54,413 INFO L225 Difference]: With dead ends: 68 [2024-11-09 22:16:54,413 INFO L226 Difference]: Without dead ends: 48 [2024-11-09 22:16:54,414 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=198, Invalid=924, Unknown=0, NotChecked=0, Total=1122 [2024-11-09 22:16:54,414 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 16 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 22:16:54,415 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 161 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 22:16:54,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-11-09 22:16:54,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 39. [2024-11-09 22:16:54,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.131578947368421) internal successors, (43), 38 states have internal predecessors, (43), 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 22:16:54,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2024-11-09 22:16:54,426 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 25 [2024-11-09 22:16:54,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:16:54,426 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2024-11-09 22:16:54,427 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.608695652173913) internal successors, (60), 23 states have internal predecessors, (60), 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 22:16:54,427 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2024-11-09 22:16:54,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-09 22:16:54,427 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:16:54,428 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:16:54,445 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 22:16:54,629 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:16:54,630 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:16:54,630 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:16:54,630 INFO L85 PathProgramCache]: Analyzing trace with hash 1242786341, now seen corresponding path program 4 times [2024-11-09 22:16:54,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:16:54,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131932102] [2024-11-09 22:16:54,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:16:54,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:16:54,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:54,999 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 8 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:16:55,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:16:55,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131932102] [2024-11-09 22:16:55,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131932102] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:16:55,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [853345298] [2024-11-09 22:16:55,000 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 22:16:55,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:16:55,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:16:55,002 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 22:16:55,004 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 22:16:55,049 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 22:16:55,050 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:16:55,051 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-09 22:16:55,053 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:16:55,285 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:16:55,285 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:16:55,808 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:16:55,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [853345298] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:16:55,809 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:16:55,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 28 [2024-11-09 22:16:55,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64742324] [2024-11-09 22:16:55,809 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:16:55,810 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-09 22:16:55,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:16:55,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-09 22:16:55,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=626, Unknown=0, NotChecked=0, Total=756 [2024-11-09 22:16:55,811 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand has 28 states, 28 states have (on average 2.7142857142857144) internal successors, (76), 28 states have internal predecessors, (76), 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 22:16:56,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:16:56,315 INFO L93 Difference]: Finished difference Result 95 states and 103 transitions. [2024-11-09 22:16:56,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-09 22:16:56,315 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.7142857142857144) internal successors, (76), 28 states have internal predecessors, (76), 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 31 [2024-11-09 22:16:56,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:16:56,316 INFO L225 Difference]: With dead ends: 95 [2024-11-09 22:16:56,316 INFO L226 Difference]: Without dead ends: 71 [2024-11-09 22:16:56,317 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=286, Invalid=1436, Unknown=0, NotChecked=0, Total=1722 [2024-11-09 22:16:56,317 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 23 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 22:16:56,318 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 212 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 22:16:56,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-11-09 22:16:56,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 59. [2024-11-09 22:16:56,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.1206896551724137) internal successors, (65), 58 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 22:16:56,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 65 transitions. [2024-11-09 22:16:56,327 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 65 transitions. Word has length 31 [2024-11-09 22:16:56,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:16:56,327 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 65 transitions. [2024-11-09 22:16:56,328 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.7142857142857144) internal successors, (76), 28 states have internal predecessors, (76), 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 22:16:56,328 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 65 transitions. [2024-11-09 22:16:56,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-09 22:16:56,331 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:16:56,332 INFO L215 NwaCegarLoop]: trace histogram [8, 7, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:16:56,343 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 22:16:56,532 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:16:56,532 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:16:56,533 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:16:56,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1046952582, now seen corresponding path program 5 times [2024-11-09 22:16:56,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:16:56,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552624989] [2024-11-09 22:16:56,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:16:56,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:16:56,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:56,734 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 30 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:16:56,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:16:56,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552624989] [2024-11-09 22:16:56,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552624989] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:16:56,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1289534793] [2024-11-09 22:16:56,734 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 22:16:56,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:16:56,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:16:56,736 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 22:16:56,738 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 22:16:56,784 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2024-11-09 22:16:56,784 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:16:56,785 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-09 22:16:56,786 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:16:56,941 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:16:56,941 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:16:57,147 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:16:57,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1289534793] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:16:57,148 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:16:57,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 31 [2024-11-09 22:16:57,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538518495] [2024-11-09 22:16:57,148 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:16:57,148 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-09 22:16:57,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:16:57,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-09 22:16:57,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=726, Unknown=0, NotChecked=0, Total=930 [2024-11-09 22:16:57,150 INFO L87 Difference]: Start difference. First operand 59 states and 65 transitions. Second operand has 31 states, 31 states have (on average 2.5161290322580645) internal successors, (78), 31 states have internal predecessors, (78), 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 22:16:57,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:16:57,402 INFO L93 Difference]: Finished difference Result 106 states and 115 transitions. [2024-11-09 22:16:57,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-09 22:16:57,405 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.5161290322580645) internal successors, (78), 31 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2024-11-09 22:16:57,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:16:57,406 INFO L225 Difference]: With dead ends: 106 [2024-11-09 22:16:57,406 INFO L226 Difference]: Without dead ends: 103 [2024-11-09 22:16:57,407 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 496 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=375, Invalid=1431, Unknown=0, NotChecked=0, Total=1806 [2024-11-09 22:16:57,408 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 15 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 22:16:57,408 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 207 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 22:16:57,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2024-11-09 22:16:57,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 52. [2024-11-09 22:16:57,421 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 22:16:57,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 55 transitions. [2024-11-09 22:16:57,422 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 55 transitions. Word has length 33 [2024-11-09 22:16:57,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:16:57,425 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 55 transitions. [2024-11-09 22:16:57,425 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.5161290322580645) internal successors, (78), 31 states have internal predecessors, (78), 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 22:16:57,425 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 55 transitions. [2024-11-09 22:16:57,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-09 22:16:57,425 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:16:57,425 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:16:57,443 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 22:16:57,626 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,SelfDestructingSolverStorable9 [2024-11-09 22:16:57,626 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:16:57,627 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:16:57,627 INFO L85 PathProgramCache]: Analyzing trace with hash -2002871412, now seen corresponding path program 6 times [2024-11-09 22:16:57,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:16:57,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262171369] [2024-11-09 22:16:57,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:16:57,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:16:57,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:16:58,051 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 18 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:16:58,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:16:58,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262171369] [2024-11-09 22:16:58,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262171369] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:16:58,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [201659919] [2024-11-09 22:16:58,051 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 22:16:58,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:16:58,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:16:58,053 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 22:16:58,053 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 22:16:58,104 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2024-11-09 22:16:58,105 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:16:58,106 INFO L255 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-09 22:16:58,109 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:16:58,381 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:16:58,381 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:16:58,952 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:16:58,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [201659919] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:16:58,952 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:16:58,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 14] total 36 [2024-11-09 22:16:58,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067599652] [2024-11-09 22:16:58,952 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:16:58,953 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-09 22:16:58,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:16:58,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-09 22:16:58,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=1083, Unknown=0, NotChecked=0, Total=1260 [2024-11-09 22:16:58,954 INFO L87 Difference]: Start difference. First operand 52 states and 55 transitions. Second operand has 36 states, 36 states have (on average 2.75) internal successors, (99), 36 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:16:59,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:16:59,776 INFO L93 Difference]: Finished difference Result 130 states and 138 transitions. [2024-11-09 22:16:59,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-09 22:16:59,777 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.75) internal successors, (99), 36 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2024-11-09 22:16:59,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:16:59,778 INFO L225 Difference]: With dead ends: 130 [2024-11-09 22:16:59,778 INFO L226 Difference]: Without dead ends: 102 [2024-11-09 22:16:59,779 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 743 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=411, Invalid=2895, Unknown=0, NotChecked=0, Total=3306 [2024-11-09 22:16:59,780 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 66 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 458 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 22:16:59,780 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 329 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 458 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 22:16:59,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-11-09 22:16:59,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 51. [2024-11-09 22:16:59,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.06) internal successors, (53), 50 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 22:16:59,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 53 transitions. [2024-11-09 22:16:59,789 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 53 transitions. Word has length 37 [2024-11-09 22:16:59,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:16:59,790 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 53 transitions. [2024-11-09 22:16:59,790 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.75) internal successors, (99), 36 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:16:59,790 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 53 transitions. [2024-11-09 22:16:59,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-09 22:16:59,790 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:16:59,791 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:16:59,805 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 22:16:59,991 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:16:59,991 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:16:59,992 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:16:59,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1005827635, now seen corresponding path program 7 times [2024-11-09 22:16:59,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:16:59,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631916246] [2024-11-09 22:16:59,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:16:59,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:17:00,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:17:00,481 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 32 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:17:00,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:17:00,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631916246] [2024-11-09 22:17:00,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631916246] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:17:00,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1586826808] [2024-11-09 22:17:00,482 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 22:17:00,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:17:00,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:17:00,484 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 22:17:00,486 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 22:17:00,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:17:00,531 INFO L255 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-09 22:17:00,533 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:17:00,805 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 97 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:17:00,805 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:17:01,587 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 97 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:17:01,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1586826808] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:17:01,587 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:17:01,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 38 [2024-11-09 22:17:01,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796574869] [2024-11-09 22:17:01,588 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:17:01,588 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-09 22:17:01,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:17:01,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-09 22:17:01,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=225, Invalid=1181, Unknown=0, NotChecked=0, Total=1406 [2024-11-09 22:17:01,589 INFO L87 Difference]: Start difference. First operand 51 states and 53 transitions. Second operand has 38 states, 38 states have (on average 2.8421052631578947) internal successors, (108), 38 states have internal predecessors, (108), 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 22:17:02,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:17:02,503 INFO L93 Difference]: Finished difference Result 120 states and 129 transitions. [2024-11-09 22:17:02,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-09 22:17:02,504 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.8421052631578947) internal successors, (108), 38 states have internal predecessors, (108), 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 43 [2024-11-09 22:17:02,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:17:02,504 INFO L225 Difference]: With dead ends: 120 [2024-11-09 22:17:02,504 INFO L226 Difference]: Without dead ends: 88 [2024-11-09 22:17:02,505 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 64 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 758 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=519, Invalid=2787, Unknown=0, NotChecked=0, Total=3306 [2024-11-09 22:17:02,506 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 35 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 572 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 22:17:02,506 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 389 Invalid, 587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 572 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 22:17:02,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-11-09 22:17:02,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 50. [2024-11-09 22:17:02,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.0408163265306123) internal successors, (51), 49 states have internal predecessors, (51), 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 22:17:02,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 51 transitions. [2024-11-09 22:17:02,516 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 51 transitions. Word has length 43 [2024-11-09 22:17:02,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:17:02,516 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 51 transitions. [2024-11-09 22:17:02,516 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.8421052631578947) internal successors, (108), 38 states have internal predecessors, (108), 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 22:17:02,516 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 51 transitions. [2024-11-09 22:17:02,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-09 22:17:02,517 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:17:02,517 INFO L215 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:17:02,529 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-09 22:17:02,720 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,SelfDestructingSolverStorable11 [2024-11-09 22:17:02,720 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:17:02,721 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:17:02,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1025608218, now seen corresponding path program 8 times [2024-11-09 22:17:02,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:17:02,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707749388] [2024-11-09 22:17:02,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:17:02,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:17:02,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:17:03,315 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 50 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:17:03,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:17:03,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707749388] [2024-11-09 22:17:03,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707749388] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:17:03,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [769958479] [2024-11-09 22:17:03,316 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 22:17:03,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:17:03,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:17:03,317 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 22:17:03,318 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 22:17:03,364 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 22:17:03,365 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:17:03,366 INFO L255 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-11-09 22:17:03,368 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:17:03,910 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 0 proven. 134 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:17:03,910 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:17:04,901 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 0 proven. 134 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:17:04,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [769958479] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:17:04,902 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:17:04,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 20] total 53 [2024-11-09 22:17:04,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791613400] [2024-11-09 22:17:04,902 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:17:04,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-11-09 22:17:04,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:17:04,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-11-09 22:17:04,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=407, Invalid=2349, Unknown=0, NotChecked=0, Total=2756 [2024-11-09 22:17:04,905 INFO L87 Difference]: Start difference. First operand 50 states and 51 transitions. Second operand has 53 states, 53 states have (on average 2.6037735849056602) internal successors, (138), 53 states have internal predecessors, (138), 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 22:17:06,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:17:06,208 INFO L93 Difference]: Finished difference Result 132 states and 143 transitions. [2024-11-09 22:17:06,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-11-09 22:17:06,209 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.6037735849056602) internal successors, (138), 53 states have internal predecessors, (138), 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 22:17:06,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:17:06,210 INFO L225 Difference]: With dead ends: 132 [2024-11-09 22:17:06,210 INFO L226 Difference]: Without dead ends: 96 [2024-11-09 22:17:06,211 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1696 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=905, Invalid=5101, Unknown=0, NotChecked=0, Total=6006 [2024-11-09 22:17:06,212 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 43 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 846 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 567 SdHoareTripleChecker+Invalid, 874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 846 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 22:17:06,212 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 567 Invalid, 874 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 846 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 22:17:06,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-11-09 22:17:06,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 71. [2024-11-09 22:17:06,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.1285714285714286) internal successors, (79), 70 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 22:17:06,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 79 transitions. [2024-11-09 22:17:06,227 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 79 transitions. Word has length 49 [2024-11-09 22:17:06,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:17:06,227 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 79 transitions. [2024-11-09 22:17:06,228 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.6037735849056602) internal successors, (138), 53 states have internal predecessors, (138), 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 22:17:06,228 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 79 transitions. [2024-11-09 22:17:06,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-09 22:17:06,229 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:17:06,229 INFO L215 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:17:06,243 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-09 22:17:06,429 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,SelfDestructingSolverStorable12 [2024-11-09 22:17:06,430 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:17:06,430 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:17:06,430 INFO L85 PathProgramCache]: Analyzing trace with hash 192603969, now seen corresponding path program 9 times [2024-11-09 22:17:06,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:17:06,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541437001] [2024-11-09 22:17:06,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:17:06,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:17:06,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:17:07,127 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 72 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:17:07,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:17:07,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541437001] [2024-11-09 22:17:07,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541437001] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:17:07,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2006994457] [2024-11-09 22:17:07,127 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 22:17:07,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:17:07,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:17:07,131 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 22:17:07,132 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 22:17:07,201 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-11-09 22:17:07,201 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:17:07,202 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-09 22:17:07,204 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:17:07,766 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 0 proven. 177 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:17:07,766 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:17:08,676 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 0 proven. 177 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:17:08,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2006994457] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:17:08,676 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:17:08,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 56 [2024-11-09 22:17:08,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506868198] [2024-11-09 22:17:08,677 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:17:08,677 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-11-09 22:17:08,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:17:08,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-11-09 22:17:08,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=442, Invalid=2638, Unknown=0, NotChecked=0, Total=3080 [2024-11-09 22:17:08,679 INFO L87 Difference]: Start difference. First operand 71 states and 79 transitions. Second operand has 56 states, 56 states have (on average 2.7857142857142856) internal successors, (156), 56 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 22:17:10,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:17:10,195 INFO L93 Difference]: Finished difference Result 175 states and 187 transitions. [2024-11-09 22:17:10,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-09 22:17:10,196 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 2.7857142857142856) internal successors, (156), 56 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) Word has length 55 [2024-11-09 22:17:10,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:17:10,196 INFO L225 Difference]: With dead ends: 175 [2024-11-09 22:17:10,196 INFO L226 Difference]: Without dead ends: 135 [2024-11-09 22:17:10,198 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1949 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1011, Invalid=5961, Unknown=0, NotChecked=0, Total=6972 [2024-11-09 22:17:10,198 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 49 mSDsluCounter, 611 mSDsCounter, 0 mSdLazyCounter, 892 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 638 SdHoareTripleChecker+Invalid, 928 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 892 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 22:17:10,199 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 638 Invalid, 928 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 892 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 22:17:10,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2024-11-09 22:17:10,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 107. [2024-11-09 22:17:10,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 106 states have (on average 1.1037735849056605) internal successors, (117), 106 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 22:17:10,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 117 transitions. [2024-11-09 22:17:10,226 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 117 transitions. Word has length 55 [2024-11-09 22:17:10,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:17:10,226 INFO L471 AbstractCegarLoop]: Abstraction has 107 states and 117 transitions. [2024-11-09 22:17:10,226 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 2.7857142857142856) internal successors, (156), 56 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 22:17:10,226 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 117 transitions. [2024-11-09 22:17:10,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-09 22:17:10,227 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:17:10,227 INFO L215 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:17:10,240 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-09 22:17:10,427 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,SelfDestructingSolverStorable13 [2024-11-09 22:17:10,428 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:17:10,428 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:17:10,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1181311576, now seen corresponding path program 10 times [2024-11-09 22:17:10,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:17:10,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604480377] [2024-11-09 22:17:10,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:17:10,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:17:10,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:17:11,202 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 98 proven. 128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:17:11,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:17:11,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604480377] [2024-11-09 22:17:11,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604480377] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:17:11,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [970787262] [2024-11-09 22:17:11,203 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 22:17:11,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:17:11,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:17:11,205 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 22:17:11,207 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 22:17:11,267 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 22:17:11,267 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:17:11,268 INFO L255 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-09 22:17:11,270 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:17:11,664 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 226 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:17:11,665 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:17:12,678 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 226 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:17:12,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [970787262] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:17:12,679 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:17:12,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 22, 22] total 53 [2024-11-09 22:17:12,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082603580] [2024-11-09 22:17:12,679 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:17:12,679 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-11-09 22:17:12,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:17:12,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-11-09 22:17:12,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=420, Invalid=2336, Unknown=0, NotChecked=0, Total=2756 [2024-11-09 22:17:12,681 INFO L87 Difference]: Start difference. First operand 107 states and 117 transitions. Second operand has 53 states, 53 states have (on average 2.943396226415094) internal successors, (156), 53 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 22:17:14,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:17:14,508 INFO L93 Difference]: Finished difference Result 222 states and 236 transitions. [2024-11-09 22:17:14,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-11-09 22:17:14,509 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.943396226415094) internal successors, (156), 53 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) Word has length 61 [2024-11-09 22:17:14,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:17:14,510 INFO L225 Difference]: With dead ends: 222 [2024-11-09 22:17:14,510 INFO L226 Difference]: Without dead ends: 178 [2024-11-09 22:17:14,512 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1575 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1011, Invalid=5631, Unknown=0, NotChecked=0, Total=6642 [2024-11-09 22:17:14,513 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 63 mSDsluCounter, 645 mSDsCounter, 0 mSdLazyCounter, 960 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 674 SdHoareTripleChecker+Invalid, 1005 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 960 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 22:17:14,513 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 674 Invalid, 1005 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 960 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 22:17:14,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2024-11-09 22:17:14,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 147. [2024-11-09 22:17:14,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 146 states have (on average 1.095890410958904) internal successors, (160), 146 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 22:17:14,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 160 transitions. [2024-11-09 22:17:14,550 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 160 transitions. Word has length 61 [2024-11-09 22:17:14,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:17:14,550 INFO L471 AbstractCegarLoop]: Abstraction has 147 states and 160 transitions. [2024-11-09 22:17:14,551 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.943396226415094) internal successors, (156), 53 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 22:17:14,551 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 160 transitions. [2024-11-09 22:17:14,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-09 22:17:14,552 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:17:14,552 INFO L215 NwaCegarLoop]: trace histogram [16, 15, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:17:14,569 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-09 22:17:14,752 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,SelfDestructingSolverStorable14 [2024-11-09 22:17:14,752 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:17:14,753 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:17:14,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1338782446, now seen corresponding path program 11 times [2024-11-09 22:17:14,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:17:14,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828446698] [2024-11-09 22:17:14,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:17:14,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:17:14,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:17:15,216 INFO L134 CoverageAnalysis]: Checked inductivity of 318 backedges. 182 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:17:15,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:17:15,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828446698] [2024-11-09 22:17:15,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828446698] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:17:15,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1525660432] [2024-11-09 22:17:15,217 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 22:17:15,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:17:15,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:17:15,218 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 22:17:15,219 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 22:17:15,272 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2024-11-09 22:17:15,272 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:17:15,273 INFO L255 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-09 22:17:15,274 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:17:15,685 INFO L134 CoverageAnalysis]: Checked inductivity of 318 backedges. 0 proven. 318 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:17:15,685 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:17:16,209 INFO L134 CoverageAnalysis]: Checked inductivity of 318 backedges. 0 proven. 318 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:17:16,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1525660432] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:17:16,210 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:17:16,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 63 [2024-11-09 22:17:16,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422664600] [2024-11-09 22:17:16,210 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:17:16,211 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2024-11-09 22:17:16,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:17:16,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2024-11-09 22:17:16,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=834, Invalid=3072, Unknown=0, NotChecked=0, Total=3906 [2024-11-09 22:17:16,213 INFO L87 Difference]: Start difference. First operand 147 states and 160 transitions. Second operand has 63 states, 63 states have (on average 2.507936507936508) internal successors, (158), 63 states have internal predecessors, (158), 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 22:17:16,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:17:16,927 INFO L93 Difference]: Finished difference Result 358 states and 378 transitions. [2024-11-09 22:17:16,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-11-09 22:17:16,927 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 2.507936507936508) internal successors, (158), 63 states have internal predecessors, (158), 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 22:17:16,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:17:16,929 INFO L225 Difference]: With dead ends: 358 [2024-11-09 22:17:16,929 INFO L226 Difference]: Without dead ends: 355 [2024-11-09 22:17:16,931 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 91 SyntacticMatches, 1 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2657 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1573, Invalid=6617, Unknown=0, NotChecked=0, Total=8190 [2024-11-09 22:17:16,931 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 34 mSDsluCounter, 533 mSDsCounter, 0 mSdLazyCounter, 696 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 567 SdHoareTripleChecker+Invalid, 716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 696 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 22:17:16,932 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 567 Invalid, 716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 696 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 22:17:16,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2024-11-09 22:17:16,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 103. [2024-11-09 22:17:16,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 102 states have (on average 1.0686274509803921) internal successors, (109), 102 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 22:17:16,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 109 transitions. [2024-11-09 22:17:16,966 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 109 transitions. Word has length 65 [2024-11-09 22:17:16,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:17:16,967 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 109 transitions. [2024-11-09 22:17:16,967 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 2.507936507936508) internal successors, (158), 63 states have internal predecessors, (158), 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 22:17:16,967 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 109 transitions. [2024-11-09 22:17:16,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-09 22:17:16,968 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:17:16,968 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:17:16,985 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-09 22:17:17,168 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:17:17,168 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:17:17,169 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:17:17,169 INFO L85 PathProgramCache]: Analyzing trace with hash 441417039, now seen corresponding path program 12 times [2024-11-09 22:17:17,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:17:17,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679433983] [2024-11-09 22:17:17,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:17:17,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:17:17,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:17:17,974 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 128 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:17:17,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:17:17,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679433983] [2024-11-09 22:17:17,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679433983] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:17:17,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1457025917] [2024-11-09 22:17:17,975 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 22:17:17,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:17:17,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:17:17,976 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 22:17:17,977 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 22:17:18,033 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2024-11-09 22:17:18,033 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:17:18,034 INFO L255 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-09 22:17:18,036 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:17:18,654 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 0 proven. 281 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:17:18,655 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:17:19,789 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 0 proven. 281 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:17:19,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1457025917] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:17:19,789 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:17:19,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 24, 24] total 64 [2024-11-09 22:17:19,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779580507] [2024-11-09 22:17:19,789 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:17:19,790 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-11-09 22:17:19,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:17:19,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-11-09 22:17:19,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=484, Invalid=3548, Unknown=0, NotChecked=0, Total=4032 [2024-11-09 22:17:19,792 INFO L87 Difference]: Start difference. First operand 103 states and 109 transitions. Second operand has 64 states, 64 states have (on average 2.890625) internal successors, (185), 64 states have internal predecessors, (185), 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 22:17:21,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:17:21,380 INFO L93 Difference]: Finished difference Result 150 states and 157 transitions. [2024-11-09 22:17:21,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-09 22:17:21,381 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 2.890625) internal successors, (185), 64 states have internal predecessors, (185), 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 67 [2024-11-09 22:17:21,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:17:21,381 INFO L225 Difference]: With dead ends: 150 [2024-11-09 22:17:21,382 INFO L226 Difference]: Without dead ends: 102 [2024-11-09 22:17:21,383 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1947 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1014, Invalid=7358, Unknown=0, NotChecked=0, Total=8372 [2024-11-09 22:17:21,384 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 68 mSDsluCounter, 576 mSDsCounter, 0 mSdLazyCounter, 1021 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 604 SdHoareTripleChecker+Invalid, 1065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1021 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 22:17:21,384 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 604 Invalid, 1065 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1021 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 22:17:21,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-11-09 22:17:21,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2024-11-09 22:17:21,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 101 states have (on average 1.0594059405940595) internal successors, (107), 101 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 22:17:21,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 107 transitions. [2024-11-09 22:17:21,416 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 107 transitions. Word has length 67 [2024-11-09 22:17:21,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:17:21,417 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 107 transitions. [2024-11-09 22:17:21,417 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 2.890625) internal successors, (185), 64 states have internal predecessors, (185), 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 22:17:21,417 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 107 transitions. [2024-11-09 22:17:21,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-09 22:17:21,418 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:17:21,418 INFO L215 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:17:21,435 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-09 22:17:21,618 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,SelfDestructingSolverStorable16 [2024-11-09 22:17:21,618 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:17:21,619 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:17:21,619 INFO L85 PathProgramCache]: Analyzing trace with hash 767841846, now seen corresponding path program 13 times [2024-11-09 22:17:21,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:17:21,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339370252] [2024-11-09 22:17:21,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:17:21,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:17:21,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:17:22,554 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 162 proven. 180 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:17:22,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:17:22,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339370252] [2024-11-09 22:17:22,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339370252] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:17:22,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [854325959] [2024-11-09 22:17:22,555 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 22:17:22,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:17:22,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:17:22,556 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 22:17:22,557 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 22:17:22,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:17:22,612 INFO L255 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-09 22:17:22,614 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:17:23,149 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:17:23,149 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:17:24,567 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:17:24,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [854325959] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:17:24,567 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:17:24,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 26, 26] total 63 [2024-11-09 22:17:24,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477963579] [2024-11-09 22:17:24,568 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:17:24,568 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2024-11-09 22:17:24,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:17:24,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2024-11-09 22:17:24,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=585, Invalid=3321, Unknown=0, NotChecked=0, Total=3906 [2024-11-09 22:17:24,569 INFO L87 Difference]: Start difference. First operand 102 states and 107 transitions. Second operand has 63 states, 63 states have (on average 2.984126984126984) internal successors, (188), 63 states have internal predecessors, (188), 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 22:17:26,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:17:26,908 INFO L93 Difference]: Finished difference Result 346 states and 360 transitions. [2024-11-09 22:17:26,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2024-11-09 22:17:26,909 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 2.984126984126984) internal successors, (188), 63 states have internal predecessors, (188), 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 73 [2024-11-09 22:17:26,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:17:26,910 INFO L225 Difference]: With dead ends: 346 [2024-11-09 22:17:26,910 INFO L226 Difference]: Without dead ends: 294 [2024-11-09 22:17:26,911 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 109 SyntacticMatches, 1 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2323 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1434, Invalid=8072, Unknown=0, NotChecked=0, Total=9506 [2024-11-09 22:17:26,911 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 78 mSDsluCounter, 823 mSDsCounter, 0 mSdLazyCounter, 1351 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 853 SdHoareTripleChecker+Invalid, 1406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 22:17:26,911 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 853 Invalid, 1406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 1351 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 22:17:26,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2024-11-09 22:17:26,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 101. [2024-11-09 22:17:26,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 100 states have (on average 1.05) internal successors, (105), 100 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:17:26,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 105 transitions. [2024-11-09 22:17:26,940 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 105 transitions. Word has length 73 [2024-11-09 22:17:26,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:17:26,940 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 105 transitions. [2024-11-09 22:17:26,940 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 2.984126984126984) internal successors, (188), 63 states have internal predecessors, (188), 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 22:17:26,940 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 105 transitions. [2024-11-09 22:17:26,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-09 22:17:26,941 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:17:26,941 INFO L215 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:17:26,954 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 22:17:27,141 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-09 22:17:27,142 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:17:27,142 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:17:27,142 INFO L85 PathProgramCache]: Analyzing trace with hash -833095587, now seen corresponding path program 14 times [2024-11-09 22:17:27,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:17:27,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195159056] [2024-11-09 22:17:27,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:17:27,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:17:27,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:17:28,133 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 200 proven. 209 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:17:28,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:17:28,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195159056] [2024-11-09 22:17:28,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195159056] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:17:28,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [492634979] [2024-11-09 22:17:28,133 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 22:17:28,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:17:28,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:17:28,134 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 22:17:28,135 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 22:17:28,196 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 22:17:28,196 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:17:28,197 INFO L255 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-11-09 22:17:28,199 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:17:28,897 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 0 proven. 409 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:17:28,898 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:17:30,410 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 0 proven. 409 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:17:30,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [492634979] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:17:30,411 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:17:30,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 28, 28] total 68 [2024-11-09 22:17:30,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750537571] [2024-11-09 22:17:30,411 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:17:30,411 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2024-11-09 22:17:30,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:17:30,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2024-11-09 22:17:30,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=678, Invalid=3878, Unknown=0, NotChecked=0, Total=4556 [2024-11-09 22:17:30,413 INFO L87 Difference]: Start difference. First operand 101 states and 105 transitions. Second operand has 68 states, 68 states have (on average 3.0) internal successors, (204), 68 states have internal predecessors, (204), 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 22:17:33,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:17:33,120 INFO L93 Difference]: Finished difference Result 321 states and 336 transitions. [2024-11-09 22:17:33,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2024-11-09 22:17:33,120 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 3.0) internal successors, (204), 68 states have internal predecessors, (204), 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 22:17:33,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:17:33,121 INFO L225 Difference]: With dead ends: 321 [2024-11-09 22:17:33,121 INFO L226 Difference]: Without dead ends: 265 [2024-11-09 22:17:33,123 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 118 SyntacticMatches, 1 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2738 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=1674, Invalid=9456, Unknown=0, NotChecked=0, Total=11130 [2024-11-09 22:17:33,123 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 88 mSDsluCounter, 948 mSDsCounter, 0 mSdLazyCounter, 1525 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 980 SdHoareTripleChecker+Invalid, 1591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 22:17:33,123 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 980 Invalid, 1591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 1525 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 22:17:33,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2024-11-09 22:17:33,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 100. [2024-11-09 22:17:33,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 1.0404040404040404) internal successors, (103), 99 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 22:17:33,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 103 transitions. [2024-11-09 22:17:33,156 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 103 transitions. Word has length 79 [2024-11-09 22:17:33,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:17:33,157 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 103 transitions. [2024-11-09 22:17:33,157 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 3.0) internal successors, (204), 68 states have internal predecessors, (204), 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 22:17:33,157 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 103 transitions. [2024-11-09 22:17:33,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-09 22:17:33,158 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:17:33,158 INFO L215 NwaCegarLoop]: trace histogram [14, 13, 13, 13, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:17:33,170 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 22:17:33,358 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:17:33,358 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:17:33,359 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:17:33,359 INFO L85 PathProgramCache]: Analyzing trace with hash -1649331260, now seen corresponding path program 15 times [2024-11-09 22:17:33,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:17:33,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701358536] [2024-11-09 22:17:33,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:17:33,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:17:33,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:17:34,413 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 242 proven. 240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:17:34,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:17:34,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701358536] [2024-11-09 22:17:34,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701358536] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:17:34,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [67326710] [2024-11-09 22:17:34,413 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 22:17:34,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:17:34,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:17:34,415 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 22:17:34,416 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 22:17:34,482 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2024-11-09 22:17:34,482 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:17:34,483 INFO L255 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-09 22:17:34,485 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:17:35,573 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 0 proven. 482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:17:35,573 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:17:37,286 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 0 proven. 482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:17:37,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [67326710] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:17:37,286 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:17:37,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 30, 30] total 86 [2024-11-09 22:17:37,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976248395] [2024-11-09 22:17:37,286 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:17:37,287 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2024-11-09 22:17:37,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:17:37,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2024-11-09 22:17:37,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=897, Invalid=6413, Unknown=0, NotChecked=0, Total=7310 [2024-11-09 22:17:37,289 INFO L87 Difference]: Start difference. First operand 100 states and 103 transitions. Second operand has 86 states, 86 states have (on average 2.86046511627907) internal successors, (246), 86 states have internal predecessors, (246), 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 22:17:39,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:17:39,881 INFO L93 Difference]: Finished difference Result 159 states and 163 transitions. [2024-11-09 22:17:39,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-11-09 22:17:39,882 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 86 states have (on average 2.86046511627907) internal successors, (246), 86 states have internal predecessors, (246), 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 85 [2024-11-09 22:17:39,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:17:39,882 INFO L225 Difference]: With dead ends: 159 [2024-11-09 22:17:39,882 INFO L226 Difference]: Without dead ends: 99 [2024-11-09 22:17:39,884 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3696 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=1822, Invalid=13430, Unknown=0, NotChecked=0, Total=15252 [2024-11-09 22:17:39,884 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 118 mSDsluCounter, 729 mSDsCounter, 0 mSdLazyCounter, 1278 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 763 SdHoareTripleChecker+Invalid, 1368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 1278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 22:17:39,885 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 763 Invalid, 1368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 1278 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 22:17:39,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-11-09 22:17:39,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2024-11-09 22:17:39,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 98 states have (on average 1.030612244897959) internal successors, (101), 98 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:17:39,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 101 transitions. [2024-11-09 22:17:39,927 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 101 transitions. Word has length 85 [2024-11-09 22:17:39,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:17:39,928 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 101 transitions. [2024-11-09 22:17:39,928 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 86 states have (on average 2.86046511627907) internal successors, (246), 86 states have internal predecessors, (246), 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 22:17:39,928 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 101 transitions. [2024-11-09 22:17:39,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-09 22:17:39,929 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:17:39,929 INFO L215 NwaCegarLoop]: trace histogram [15, 14, 14, 14, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:17:39,944 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 22:17:40,129 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:17:40,129 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:17:40,130 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:17:40,130 INFO L85 PathProgramCache]: Analyzing trace with hash 834328683, now seen corresponding path program 16 times [2024-11-09 22:17:40,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:17:40,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774606379] [2024-11-09 22:17:40,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:17:40,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:17:40,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:17:41,356 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 288 proven. 273 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:17:41,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:17:41,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774606379] [2024-11-09 22:17:41,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774606379] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:17:41,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1204765154] [2024-11-09 22:17:41,356 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 22:17:41,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:17:41,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:17:41,358 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 22:17:41,359 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 22:17:41,423 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 22:17:41,423 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:17:41,425 INFO L255 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-11-09 22:17:41,426 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:17:42,170 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:17:42,171 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:17:43,987 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:17:43,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1204765154] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:17:43,988 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:17:43,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 32, 32] total 78 [2024-11-09 22:17:43,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682347365] [2024-11-09 22:17:43,988 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:17:43,988 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2024-11-09 22:17:43,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:17:43,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2024-11-09 22:17:43,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=885, Invalid=5121, Unknown=0, NotChecked=0, Total=6006 [2024-11-09 22:17:43,990 INFO L87 Difference]: Start difference. First operand 99 states and 101 transitions. Second operand has 78 states, 78 states have (on average 3.0256410256410255) internal successors, (236), 78 states have internal predecessors, (236), 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 22:17:47,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:17:47,661 INFO L93 Difference]: Finished difference Result 248 states and 265 transitions. [2024-11-09 22:17:47,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2024-11-09 22:17:47,661 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 78 states have (on average 3.0256410256410255) internal successors, (236), 78 states have internal predecessors, (236), 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 91 [2024-11-09 22:17:47,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:17:47,662 INFO L225 Difference]: With dead ends: 248 [2024-11-09 22:17:47,662 INFO L226 Difference]: Without dead ends: 184 [2024-11-09 22:17:47,663 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3640 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=2211, Invalid=12551, Unknown=0, NotChecked=0, Total=14762 [2024-11-09 22:17:47,664 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 117 mSDsluCounter, 1351 mSDsCounter, 0 mSdLazyCounter, 2219 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 1387 SdHoareTripleChecker+Invalid, 2324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 2219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-09 22:17:47,664 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 1387 Invalid, 2324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 2219 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-09 22:17:47,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2024-11-09 22:17:47,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 98. [2024-11-09 22:17:47,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 97 states have (on average 1.0206185567010309) internal successors, (99), 97 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:17:47,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 99 transitions. [2024-11-09 22:17:47,696 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 99 transitions. Word has length 91 [2024-11-09 22:17:47,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:17:47,697 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 99 transitions. [2024-11-09 22:17:47,697 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 78 states have (on average 3.0256410256410255) internal successors, (236), 78 states have internal predecessors, (236), 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 22:17:47,697 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 99 transitions. [2024-11-09 22:17:47,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-09 22:17:47,698 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:17:47,698 INFO L215 NwaCegarLoop]: trace histogram [16, 15, 15, 15, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:17:47,716 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-09 22:17:47,898 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:17:47,899 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:17:47,899 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:17:47,899 INFO L85 PathProgramCache]: Analyzing trace with hash -2119977390, now seen corresponding path program 17 times [2024-11-09 22:17:47,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:17:47,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379537366] [2024-11-09 22:17:47,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:17:47,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:17:47,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:17:49,435 INFO L134 CoverageAnalysis]: Checked inductivity of 646 backedges. 338 proven. 308 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:17:49,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:17:49,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379537366] [2024-11-09 22:17:49,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379537366] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:17:49,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [16129009] [2024-11-09 22:17:49,436 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 22:17:49,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:17:49,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:17:49,437 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 22:17:49,438 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 22:17:49,514 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2024-11-09 22:17:49,515 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:17:49,516 INFO L255 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 65 conjuncts are in the unsatisfiable core [2024-11-09 22:17:49,518 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:17:50,433 INFO L134 CoverageAnalysis]: Checked inductivity of 646 backedges. 0 proven. 646 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:17:50,434 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:17:52,480 INFO L134 CoverageAnalysis]: Checked inductivity of 646 backedges. 0 proven. 646 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:17:52,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [16129009] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:17:52,480 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:17:52,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 34, 34] total 83 [2024-11-09 22:17:52,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950851241] [2024-11-09 22:17:52,481 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:17:52,481 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2024-11-09 22:17:52,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:17:52,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2024-11-09 22:17:52,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=999, Invalid=5807, Unknown=0, NotChecked=0, Total=6806 [2024-11-09 22:17:52,482 INFO L87 Difference]: Start difference. First operand 98 states and 99 transitions. Second operand has 83 states, 83 states have (on average 3.036144578313253) internal successors, (252), 83 states have internal predecessors, (252), 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 22:17:56,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:17:56,604 INFO L93 Difference]: Finished difference Result 260 states and 279 transitions. [2024-11-09 22:17:56,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2024-11-09 22:17:56,605 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 83 states have (on average 3.036144578313253) internal successors, (252), 83 states have internal predecessors, (252), 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 97 [2024-11-09 22:17:56,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:17:56,606 INFO L225 Difference]: With dead ends: 260 [2024-11-09 22:17:56,606 INFO L226 Difference]: Without dead ends: 192 [2024-11-09 22:17:56,607 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 145 SyntacticMatches, 1 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4187 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=2508, Invalid=14262, Unknown=0, NotChecked=0, Total=16770 [2024-11-09 22:17:56,607 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 134 mSDsluCounter, 1485 mSDsCounter, 0 mSdLazyCounter, 2422 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 1523 SdHoareTripleChecker+Invalid, 2527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 2422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-09 22:17:56,608 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 1523 Invalid, 2527 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 2422 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-09 22:17:56,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2024-11-09 22:17:56,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 135. [2024-11-09 22:17:56,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 134 states have (on average 1.126865671641791) internal successors, (151), 134 states have internal predecessors, (151), 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 22:17:56,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 151 transitions. [2024-11-09 22:17:56,666 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 151 transitions. Word has length 97 [2024-11-09 22:17:56,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:17:56,666 INFO L471 AbstractCegarLoop]: Abstraction has 135 states and 151 transitions. [2024-11-09 22:17:56,666 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 83 states have (on average 3.036144578313253) internal successors, (252), 83 states have internal predecessors, (252), 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 22:17:56,666 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 151 transitions. [2024-11-09 22:17:56,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-09 22:17:56,666 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:17:56,667 INFO L215 NwaCegarLoop]: trace histogram [17, 16, 16, 16, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:17:56,679 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 22:17:56,867 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,SelfDestructingSolverStorable21 [2024-11-09 22:17:56,867 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:17:56,867 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:17:56,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1830904455, now seen corresponding path program 18 times [2024-11-09 22:17:56,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:17:56,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137463445] [2024-11-09 22:17:56,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:17:56,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:17:56,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:17:58,409 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 392 proven. 345 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:17:58,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:17:58,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137463445] [2024-11-09 22:17:58,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137463445] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:17:58,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1346250625] [2024-11-09 22:17:58,410 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 22:17:58,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:17:58,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:17:58,411 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 22:17:58,411 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 22:17:58,494 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2024-11-09 22:17:58,494 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:17:58,496 INFO L255 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 69 conjuncts are in the unsatisfiable core [2024-11-09 22:17:58,498 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:17:59,928 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 0 proven. 737 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:17:59,928 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:18:02,312 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 0 proven. 737 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:18:02,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1346250625] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:18:02,312 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:18:02,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 38, 38] total 101 [2024-11-09 22:18:02,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533919354] [2024-11-09 22:18:02,313 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:18:02,313 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 101 states [2024-11-09 22:18:02,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:18:02,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2024-11-09 22:18:02,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1132, Invalid=8968, Unknown=0, NotChecked=0, Total=10100 [2024-11-09 22:18:02,315 INFO L87 Difference]: Start difference. First operand 135 states and 151 transitions. Second operand has 101 states, 101 states have (on average 2.8415841584158414) internal successors, (287), 101 states have internal predecessors, (287), 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 22:18:06,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:18:06,547 INFO L93 Difference]: Finished difference Result 208 states and 225 transitions. [2024-11-09 22:18:06,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2024-11-09 22:18:06,547 INFO L78 Accepts]: Start accepts. Automaton has has 101 states, 101 states have (on average 2.8415841584158414) internal successors, (287), 101 states have internal predecessors, (287), 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 22:18:06,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:18:06,548 INFO L225 Difference]: With dead ends: 208 [2024-11-09 22:18:06,548 INFO L226 Difference]: Without dead ends: 136 [2024-11-09 22:18:06,549 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5375 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=2441, Invalid=19021, Unknown=0, NotChecked=0, Total=21462 [2024-11-09 22:18:06,550 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 142 mSDsluCounter, 1159 mSDsCounter, 0 mSdLazyCounter, 1991 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 1199 SdHoareTripleChecker+Invalid, 2099 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 1991 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-09 22:18:06,550 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 1199 Invalid, 2099 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 1991 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-09 22:18:06,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2024-11-09 22:18:06,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 135. [2024-11-09 22:18:06,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 134 states have (on average 1.1194029850746268) internal successors, (150), 134 states have internal predecessors, (150), 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 22:18:06,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 150 transitions. [2024-11-09 22:18:06,613 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 150 transitions. Word has length 103 [2024-11-09 22:18:06,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:18:06,613 INFO L471 AbstractCegarLoop]: Abstraction has 135 states and 150 transitions. [2024-11-09 22:18:06,613 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 101 states, 101 states have (on average 2.8415841584158414) internal successors, (287), 101 states have internal predecessors, (287), 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 22:18:06,613 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 150 transitions. [2024-11-09 22:18:06,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-09 22:18:06,614 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:18:06,614 INFO L215 NwaCegarLoop]: trace histogram [18, 17, 16, 16, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:18:06,627 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 22:18:06,814 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,SelfDestructingSolverStorable22 [2024-11-09 22:18:06,814 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:18:06,815 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:18:06,815 INFO L85 PathProgramCache]: Analyzing trace with hash -2133672520, now seen corresponding path program 19 times [2024-11-09 22:18:06,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:18:06,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472301998] [2024-11-09 22:18:06,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:18:06,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:18:06,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:18:07,570 INFO L134 CoverageAnalysis]: Checked inductivity of 771 backedges. 240 proven. 531 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:18:07,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:18:07,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472301998] [2024-11-09 22:18:07,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472301998] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:18:07,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1580045724] [2024-11-09 22:18:07,571 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 22:18:07,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:18:07,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:18:07,572 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 22:18:07,573 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 22:18:07,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:18:07,648 INFO L255 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-11-09 22:18:07,649 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:18:08,210 INFO L134 CoverageAnalysis]: Checked inductivity of 771 backedges. 0 proven. 771 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:18:08,210 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:18:08,956 INFO L134 CoverageAnalysis]: Checked inductivity of 771 backedges. 0 proven. 771 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:18:08,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1580045724] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:18:08,957 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:18:08,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36, 36] total 71 [2024-11-09 22:18:08,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86164438] [2024-11-09 22:18:08,957 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:18:08,957 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2024-11-09 22:18:08,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:18:08,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2024-11-09 22:18:08,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=823, Invalid=4147, Unknown=0, NotChecked=0, Total=4970 [2024-11-09 22:18:08,958 INFO L87 Difference]: Start difference. First operand 135 states and 150 transitions. Second operand has 71 states, 71 states have (on average 2.492957746478873) internal successors, (177), 71 states have internal predecessors, (177), 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 22:18:09,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:18:09,730 INFO L93 Difference]: Finished difference Result 202 states and 218 transitions. [2024-11-09 22:18:09,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-11-09 22:18:09,730 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 2.492957746478873) internal successors, (177), 71 states have internal predecessors, (177), 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 22:18:09,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:18:09,731 INFO L225 Difference]: With dead ends: 202 [2024-11-09 22:18:09,731 INFO L226 Difference]: Without dead ends: 199 [2024-11-09 22:18:09,732 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 158 SyntacticMatches, 17 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3693 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1644, Invalid=8862, Unknown=0, NotChecked=0, Total=10506 [2024-11-09 22:18:09,733 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 49 mSDsluCounter, 596 mSDsCounter, 0 mSdLazyCounter, 634 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 622 SdHoareTripleChecker+Invalid, 681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 22:18:09,733 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 622 Invalid, 681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 634 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 22:18:09,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2024-11-09 22:18:09,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 110. [2024-11-09 22:18:09,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 109 states have (on average 1.018348623853211) internal successors, (111), 109 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 22:18:09,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 111 transitions. [2024-11-09 22:18:09,776 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 111 transitions. Word has length 105 [2024-11-09 22:18:09,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:18:09,776 INFO L471 AbstractCegarLoop]: Abstraction has 110 states and 111 transitions. [2024-11-09 22:18:09,776 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 2.492957746478873) internal successors, (177), 71 states have internal predecessors, (177), 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 22:18:09,776 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 111 transitions. [2024-11-09 22:18:09,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-11-09 22:18:09,777 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:18:09,777 INFO L215 NwaCegarLoop]: trace histogram [18, 17, 17, 17, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:18:09,789 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 22:18:09,977 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:18:09,977 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:18:09,978 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:18:09,978 INFO L85 PathProgramCache]: Analyzing trace with hash 1713528288, now seen corresponding path program 20 times [2024-11-09 22:18:09,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:18:09,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106481132] [2024-11-09 22:18:09,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:18:09,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:18:09,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat