./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops-crafted-1/in-de42.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc 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/loops-crafted-1/in-de42.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6b13c8359dfc3fa3ad0e51c85ccdf97c793022ae2240daea5433bdb872a277a9 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 13:21:04,725 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 13:21:04,788 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 13:21:04,810 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 13:21:04,810 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 13:21:04,843 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 13:21:04,844 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 13:21:04,844 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 13:21:04,844 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 13:21:04,845 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 13:21:04,845 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 13:21:04,845 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 13:21:04,846 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 13:21:04,846 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 13:21:04,846 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 13:21:04,847 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 13:21:04,847 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 13:21:04,847 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 13:21:04,847 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 13:21:04,848 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 13:21:04,848 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 13:21:04,848 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 13:21:04,849 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 13:21:04,849 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 13:21:04,849 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 13:21:04,849 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 13:21:04,850 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 13:21:04,850 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 13:21:04,850 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 13:21:04,850 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 13:21:04,850 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 13:21:04,851 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 13:21:04,851 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 13:21:04,851 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 13:21:04,851 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 13:21:04,852 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 13:21:04,852 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 13:21:04,852 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 13:21:04,852 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 13:21:04,853 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 13:21:04,853 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 13:21:04,853 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 13:21:04,854 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6b13c8359dfc3fa3ad0e51c85ccdf97c793022ae2240daea5433bdb872a277a9 [2024-11-18 13:21:05,046 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 13:21:05,070 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 13:21:05,074 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 13:21:05,075 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 13:21:05,076 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 13:21:05,077 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops-crafted-1/in-de42.c [2024-11-18 13:21:06,406 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 13:21:06,563 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 13:21:06,563 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops-crafted-1/in-de42.c [2024-11-18 13:21:06,570 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/726d0b92b/2e558a1c676342ccbc2197546f040473/FLAG7224100ee [2024-11-18 13:21:06,584 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/726d0b92b/2e558a1c676342ccbc2197546f040473 [2024-11-18 13:21:06,587 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 13:21:06,588 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 13:21:06,589 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 13:21:06,589 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 13:21:06,599 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 13:21:06,600 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 01:21:06" (1/1) ... [2024-11-18 13:21:06,601 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21e175d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:21:06, skipping insertion in model container [2024-11-18 13:21:06,602 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 01:21:06" (1/1) ... [2024-11-18 13:21:06,616 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 13:21:06,753 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/loops-crafted-1/in-de42.c[368,381] [2024-11-18 13:21:06,771 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 13:21:06,781 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 13:21:06,794 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/loops-crafted-1/in-de42.c[368,381] [2024-11-18 13:21:06,800 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 13:21:06,817 INFO L204 MainTranslator]: Completed translation [2024-11-18 13:21:06,817 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:21:06 WrapperNode [2024-11-18 13:21:06,817 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 13:21:06,818 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 13:21:06,818 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 13:21:06,818 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 13:21:06,824 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:21:06" (1/1) ... [2024-11-18 13:21:06,829 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:21:06" (1/1) ... [2024-11-18 13:21:06,843 INFO L138 Inliner]: procedures = 13, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 65 [2024-11-18 13:21:06,843 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 13:21:06,844 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 13:21:06,844 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 13:21:06,844 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 13:21:06,852 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:21:06" (1/1) ... [2024-11-18 13:21:06,852 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:21:06" (1/1) ... [2024-11-18 13:21:06,853 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:21:06" (1/1) ... [2024-11-18 13:21:06,862 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]. [2024-11-18 13:21:06,862 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:21:06" (1/1) ... [2024-11-18 13:21:06,862 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:21:06" (1/1) ... [2024-11-18 13:21:06,864 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:21:06" (1/1) ... [2024-11-18 13:21:06,867 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:21:06" (1/1) ... [2024-11-18 13:21:06,868 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:21:06" (1/1) ... [2024-11-18 13:21:06,868 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:21:06" (1/1) ... [2024-11-18 13:21:06,870 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 13:21:06,870 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 13:21:06,871 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 13:21:06,871 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 13:21:06,871 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:21:06" (1/1) ... [2024-11-18 13:21:06,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 13:21:06,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:21:06,906 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) [2024-11-18 13:21:06,911 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 [2024-11-18 13:21:06,950 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 13:21:06,951 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 13:21:06,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 13:21:06,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 13:21:07,000 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 13:21:07,002 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 13:21:07,125 INFO L? ?]: Removed 9 outVars from TransFormulas that were not future-live. [2024-11-18 13:21:07,125 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 13:21:07,134 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 13:21:07,134 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-18 13:21:07,134 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:21:07 BoogieIcfgContainer [2024-11-18 13:21:07,134 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 13:21:07,136 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 13:21:07,136 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 13:21:07,139 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 13:21:07,139 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 01:21:06" (1/3) ... [2024-11-18 13:21:07,139 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b581de9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 01:21:07, skipping insertion in model container [2024-11-18 13:21:07,140 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:21:06" (2/3) ... [2024-11-18 13:21:07,140 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b581de9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 01:21:07, skipping insertion in model container [2024-11-18 13:21:07,140 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:21:07" (3/3) ... [2024-11-18 13:21:07,141 INFO L112 eAbstractionObserver]: Analyzing ICFG in-de42.c [2024-11-18 13:21:07,155 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 13:21:07,156 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 13:21:07,207 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 13:21:07,213 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;@63d5e749, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 13:21:07,215 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 13:21:07,219 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 14 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) [2024-11-18 13:21:07,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-18 13:21:07,224 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:21:07,226 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:21:07,227 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:21:07,231 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:21:07,231 INFO L85 PathProgramCache]: Analyzing trace with hash -1522018600, now seen corresponding path program 1 times [2024-11-18 13:21:07,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:21:07,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170502375] [2024-11-18 13:21:07,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:21:07,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:21:07,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:21:07,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:21:07,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:21:07,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170502375] [2024-11-18 13:21:07,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170502375] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:21:07,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 13:21:07,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 13:21:07,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209956222] [2024-11-18 13:21:07,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:21:07,373 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 13:21:07,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:21:07,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 13:21:07,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 13:21:07,400 INFO L87 Difference]: Start difference. First operand has 15 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 14 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) [2024-11-18 13:21:07,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:21:07,413 INFO L93 Difference]: Finished difference Result 27 states and 41 transitions. [2024-11-18 13:21:07,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 13:21:07,415 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 [2024-11-18 13:21:07,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:21:07,420 INFO L225 Difference]: With dead ends: 27 [2024-11-18 13:21:07,420 INFO L226 Difference]: Without dead ends: 11 [2024-11-18 13:21:07,422 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 [2024-11-18 13:21:07,424 INFO L432 NwaCegarLoop]: 18 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, 18 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 [2024-11-18 13:21:07,425 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:21:07,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2024-11-18 13:21:07,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2024-11-18 13:21:07,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.4) internal successors, (14), 10 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) [2024-11-18 13:21:07,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 14 transitions. [2024-11-18 13:21:07,487 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 14 transitions. Word has length 10 [2024-11-18 13:21:07,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:21:07,487 INFO L471 AbstractCegarLoop]: Abstraction has 11 states and 14 transitions. [2024-11-18 13:21:07,487 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) [2024-11-18 13:21:07,488 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 14 transitions. [2024-11-18 13:21:07,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-18 13:21:07,488 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:21:07,488 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:21:07,488 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 13:21:07,488 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:21:07,489 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:21:07,498 INFO L85 PathProgramCache]: Analyzing trace with hash -1522137764, now seen corresponding path program 1 times [2024-11-18 13:21:07,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:21:07,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102185961] [2024-11-18 13:21:07,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:21:07,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:21:07,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:21:07,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:21:07,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:21:07,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102185961] [2024-11-18 13:21:07,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102185961] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:21:07,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 13:21:07,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-18 13:21:07,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010534970] [2024-11-18 13:21:07,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:21:07,984 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 13:21:07,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:21:07,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 13:21:07,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-18 13:21:07,986 INFO L87 Difference]: Start difference. First operand 11 states and 14 transitions. Second operand has 8 states, 8 states have (on average 1.25) internal successors, (10), 8 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) [2024-11-18 13:21:08,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:21:08,076 INFO L93 Difference]: Finished difference Result 25 states and 34 transitions. [2024-11-18 13:21:08,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 13:21:08,077 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.25) internal successors, (10), 8 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 [2024-11-18 13:21:08,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:21:08,078 INFO L225 Difference]: With dead ends: 25 [2024-11-18 13:21:08,078 INFO L226 Difference]: Without dead ends: 17 [2024-11-18 13:21:08,078 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-11-18 13:21:08,080 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 8 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:21:08,081 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 30 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:21:08,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2024-11-18 13:21:08,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2024-11-18 13:21:08,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.4375) internal successors, (23), 16 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) [2024-11-18 13:21:08,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 23 transitions. [2024-11-18 13:21:08,088 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 23 transitions. Word has length 10 [2024-11-18 13:21:08,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:21:08,089 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 23 transitions. [2024-11-18 13:21:08,089 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.25) internal successors, (10), 8 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) [2024-11-18 13:21:08,089 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 23 transitions. [2024-11-18 13:21:08,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-18 13:21:08,089 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:21:08,089 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:21:08,089 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 13:21:08,090 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:21:08,090 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:21:08,090 INFO L85 PathProgramCache]: Analyzing trace with hash 105287507, now seen corresponding path program 1 times [2024-11-18 13:21:08,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:21:08,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949329083] [2024-11-18 13:21:08,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:21:08,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:21:08,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:21:08,142 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:21:08,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:21:08,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949329083] [2024-11-18 13:21:08,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949329083] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:21:08,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 13:21:08,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 13:21:08,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398666494] [2024-11-18 13:21:08,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:21:08,143 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 13:21:08,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:21:08,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 13:21:08,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 13:21:08,144 INFO L87 Difference]: Start difference. First operand 17 states and 23 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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) [2024-11-18 13:21:08,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:21:08,157 INFO L93 Difference]: Finished difference Result 25 states and 34 transitions. [2024-11-18 13:21:08,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 13:21:08,158 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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 [2024-11-18 13:21:08,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:21:08,158 INFO L225 Difference]: With dead ends: 25 [2024-11-18 13:21:08,159 INFO L226 Difference]: Without dead ends: 16 [2024-11-18 13:21:08,160 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 13:21:08,160 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 1 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:21:08,161 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 20 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:21:08,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2024-11-18 13:21:08,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2024-11-18 13:21:08,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.4) internal successors, (21), 15 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) [2024-11-18 13:21:08,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 21 transitions. [2024-11-18 13:21:08,167 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 21 transitions. Word has length 11 [2024-11-18 13:21:08,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:21:08,168 INFO L471 AbstractCegarLoop]: Abstraction has 16 states and 21 transitions. [2024-11-18 13:21:08,168 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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) [2024-11-18 13:21:08,168 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 21 transitions. [2024-11-18 13:21:08,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-18 13:21:08,169 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:21:08,169 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:21:08,169 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 13:21:08,170 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:21:08,170 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:21:08,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1508115906, now seen corresponding path program 1 times [2024-11-18 13:21:08,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:21:08,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700529240] [2024-11-18 13:21:08,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:21:08,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:21:08,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:21:08,245 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:21:08,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:21:08,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700529240] [2024-11-18 13:21:08,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700529240] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:21:08,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 13:21:08,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 13:21:08,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690479754] [2024-11-18 13:21:08,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:21:08,246 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 13:21:08,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:21:08,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 13:21:08,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 13:21:08,247 INFO L87 Difference]: Start difference. First operand 16 states and 21 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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) [2024-11-18 13:21:08,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:21:08,270 INFO L93 Difference]: Finished difference Result 21 states and 26 transitions. [2024-11-18 13:21:08,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 13:21:08,271 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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 [2024-11-18 13:21:08,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:21:08,271 INFO L225 Difference]: With dead ends: 21 [2024-11-18 13:21:08,271 INFO L226 Difference]: Without dead ends: 12 [2024-11-18 13:21:08,271 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 13:21:08,273 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 1 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:21:08,273 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 27 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:21:08,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2024-11-18 13:21:08,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2024-11-18 13:21:08,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 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) [2024-11-18 13:21:08,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 15 transitions. [2024-11-18 13:21:08,278 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 15 transitions. Word has length 11 [2024-11-18 13:21:08,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:21:08,278 INFO L471 AbstractCegarLoop]: Abstraction has 12 states and 15 transitions. [2024-11-18 13:21:08,279 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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) [2024-11-18 13:21:08,279 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 15 transitions. [2024-11-18 13:21:08,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-18 13:21:08,279 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:21:08,279 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:21:08,279 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 13:21:08,279 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:21:08,280 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:21:08,280 INFO L85 PathProgramCache]: Analyzing trace with hash 923648321, now seen corresponding path program 1 times [2024-11-18 13:21:08,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:21:08,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977517324] [2024-11-18 13:21:08,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:21:08,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:21:08,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:21:08,353 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:21:08,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:21:08,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977517324] [2024-11-18 13:21:08,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977517324] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:21:08,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1611083510] [2024-11-18 13:21:08,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:21:08,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:21:08,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:21:08,358 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) [2024-11-18 13:21:08,362 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 13:21:08,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:21:08,405 INFO L255 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-18 13:21:08,408 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:21:08,450 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:21:08,453 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:21:08,491 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:21:08,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1611083510] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:21:08,492 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:21:08,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2024-11-18 13:21:08,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279548625] [2024-11-18 13:21:08,494 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:21:08,495 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-18 13:21:08,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:21:08,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-18 13:21:08,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-18 13:21:08,497 INFO L87 Difference]: Start difference. First operand 12 states and 15 transitions. Second operand has 9 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:21:08,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:21:08,604 INFO L93 Difference]: Finished difference Result 35 states and 53 transitions. [2024-11-18 13:21:08,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-18 13:21:08,605 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 0 states have call successors, (0), 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 [2024-11-18 13:21:08,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:21:08,607 INFO L225 Difference]: With dead ends: 35 [2024-11-18 13:21:08,608 INFO L226 Difference]: Without dead ends: 29 [2024-11-18 13:21:08,608 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2024-11-18 13:21:08,610 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 25 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:21:08,610 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 40 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:21:08,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-18 13:21:08,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 24. [2024-11-18 13:21:08,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.391304347826087) internal successors, (32), 23 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) [2024-11-18 13:21:08,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 32 transitions. [2024-11-18 13:21:08,619 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 32 transitions. Word has length 11 [2024-11-18 13:21:08,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:21:08,619 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 32 transitions. [2024-11-18 13:21:08,619 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:21:08,619 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 32 transitions. [2024-11-18 13:21:08,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-18 13:21:08,620 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:21:08,620 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:21:08,636 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-18 13:21:08,824 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:21:08,826 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:21:08,826 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:21:08,826 INFO L85 PathProgramCache]: Analyzing trace with hash 607187538, now seen corresponding path program 1 times [2024-11-18 13:21:08,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:21:08,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532910146] [2024-11-18 13:21:08,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:21:08,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:21:08,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:21:08,906 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-18 13:21:08,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:21:08,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532910146] [2024-11-18 13:21:08,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532910146] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:21:08,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [331327477] [2024-11-18 13:21:08,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:21:08,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:21:08,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:21:08,910 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) [2024-11-18 13:21:08,918 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 13:21:08,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:21:08,952 INFO L255 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-18 13:21:08,953 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:21:09,008 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-18 13:21:09,008 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:21:09,027 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-18 13:21:09,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [331327477] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:21:09,027 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:21:09,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2024-11-18 13:21:09,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245665402] [2024-11-18 13:21:09,028 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:21:09,028 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 13:21:09,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:21:09,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 13:21:09,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-18 13:21:09,029 INFO L87 Difference]: Start difference. First operand 24 states and 32 transitions. Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:21:09,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:21:09,065 INFO L93 Difference]: Finished difference Result 57 states and 84 transitions. [2024-11-18 13:21:09,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 13:21:09,066 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 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 [2024-11-18 13:21:09,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:21:09,067 INFO L225 Difference]: With dead ends: 57 [2024-11-18 13:21:09,067 INFO L226 Difference]: Without dead ends: 52 [2024-11-18 13:21:09,067 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-18 13:21:09,067 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 9 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:21:09,068 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 34 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:21:09,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-11-18 13:21:09,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 46. [2024-11-18 13:21:09,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.488888888888889) internal successors, (67), 45 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:21:09,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 67 transitions. [2024-11-18 13:21:09,076 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 67 transitions. Word has length 13 [2024-11-18 13:21:09,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:21:09,076 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 67 transitions. [2024-11-18 13:21:09,076 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:21:09,076 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 67 transitions. [2024-11-18 13:21:09,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-18 13:21:09,077 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:21:09,077 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:21:09,094 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-18 13:21:09,280 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,SelfDestructingSolverStorable5 [2024-11-18 13:21:09,281 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:21:09,281 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:21:09,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1644609900, now seen corresponding path program 1 times [2024-11-18 13:21:09,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:21:09,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262737826] [2024-11-18 13:21:09,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:21:09,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:21:09,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:21:09,603 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:21:09,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:21:09,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262737826] [2024-11-18 13:21:09,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262737826] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:21:09,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1506433358] [2024-11-18 13:21:09,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:21:09,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:21:09,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:21:09,605 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) [2024-11-18 13:21:09,607 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 13:21:09,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:21:09,647 INFO L255 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-18 13:21:09,648 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:21:09,815 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:21:09,819 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:21:10,026 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:21:10,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1506433358] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:21:10,027 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:21:10,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 21 [2024-11-18 13:21:10,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82754735] [2024-11-18 13:21:10,027 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:21:10,028 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-18 13:21:10,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:21:10,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-18 13:21:10,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=362, Unknown=0, NotChecked=0, Total=420 [2024-11-18 13:21:10,029 INFO L87 Difference]: Start difference. First operand 46 states and 67 transitions. Second operand has 21 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 21 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:21:10,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:21:10,428 INFO L93 Difference]: Finished difference Result 57 states and 79 transitions. [2024-11-18 13:21:10,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-18 13:21:10,429 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 21 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-18 13:21:10,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:21:10,429 INFO L225 Difference]: With dead ends: 57 [2024-11-18 13:21:10,430 INFO L226 Difference]: Without dead ends: 35 [2024-11-18 13:21:10,430 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=106, Invalid=544, Unknown=0, NotChecked=0, Total=650 [2024-11-18 13:21:10,431 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 16 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 13:21:10,431 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 51 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 13:21:10,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-11-18 13:21:10,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2024-11-18 13:21:10,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.5151515151515151) internal successors, (50), 33 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:21:10,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 50 transitions. [2024-11-18 13:21:10,437 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 50 transitions. Word has length 14 [2024-11-18 13:21:10,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:21:10,437 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 50 transitions. [2024-11-18 13:21:10,438 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 21 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:21:10,438 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 50 transitions. [2024-11-18 13:21:10,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-18 13:21:10,438 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:21:10,438 INFO L215 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:21:10,455 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-18 13:21:10,642 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:21:10,643 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:21:10,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:21:10,643 INFO L85 PathProgramCache]: Analyzing trace with hash -1219996004, now seen corresponding path program 2 times [2024-11-18 13:21:10,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:21:10,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889075833] [2024-11-18 13:21:10,644 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 13:21:10,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:21:10,661 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 13:21:10,662 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:21:10,767 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:21:10,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:21:10,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889075833] [2024-11-18 13:21:10,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889075833] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:21:10,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [981020733] [2024-11-18 13:21:10,768 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 13:21:10,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:21:10,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:21:10,770 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) [2024-11-18 13:21:10,774 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-18 13:21:10,804 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 13:21:10,805 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:21:10,805 INFO L255 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-18 13:21:10,806 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:21:10,823 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:21:10,826 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:21:10,907 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:21:10,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [981020733] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:21:10,907 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:21:10,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2024-11-18 13:21:10,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884046305] [2024-11-18 13:21:10,908 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:21:10,909 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-18 13:21:10,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:21:10,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-18 13:21:10,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2024-11-18 13:21:10,911 INFO L87 Difference]: Start difference. First operand 34 states and 50 transitions. Second operand has 15 states, 15 states have (on average 1.6) internal successors, (24), 15 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:21:11,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:21:11,465 INFO L93 Difference]: Finished difference Result 141 states and 245 transitions. [2024-11-18 13:21:11,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-18 13:21:11,468 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.6) internal successors, (24), 15 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-18 13:21:11,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:21:11,469 INFO L225 Difference]: With dead ends: 141 [2024-11-18 13:21:11,469 INFO L226 Difference]: Without dead ends: 129 [2024-11-18 13:21:11,470 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=281, Invalid=649, Unknown=0, NotChecked=0, Total=930 [2024-11-18 13:21:11,470 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 109 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 13:21:11,470 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 98 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 13:21:11,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2024-11-18 13:21:11,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 72. [2024-11-18 13:21:11,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.4788732394366197) internal successors, (105), 71 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) [2024-11-18 13:21:11,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 105 transitions. [2024-11-18 13:21:11,493 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 105 transitions. Word has length 14 [2024-11-18 13:21:11,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:21:11,493 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 105 transitions. [2024-11-18 13:21:11,493 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.6) internal successors, (24), 15 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:21:11,493 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 105 transitions. [2024-11-18 13:21:11,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-18 13:21:11,494 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:21:11,494 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:21:11,509 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-18 13:21:11,694 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:21:11,695 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:21:11,695 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:21:11,695 INFO L85 PathProgramCache]: Analyzing trace with hash 1176713020, now seen corresponding path program 2 times [2024-11-18 13:21:11,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:21:11,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284521069] [2024-11-18 13:21:11,695 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 13:21:11,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:21:11,709 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 13:21:11,709 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:21:11,785 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 13:21:11,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:21:11,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284521069] [2024-11-18 13:21:11,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284521069] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:21:11,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [161893870] [2024-11-18 13:21:11,788 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 13:21:11,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:21:11,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:21:11,793 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) [2024-11-18 13:21:11,815 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-18 13:21:11,850 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 13:21:11,850 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:21:11,851 INFO L255 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-18 13:21:11,852 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:21:11,873 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 13:21:11,873 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:21:11,930 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 13:21:11,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [161893870] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:21:11,930 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:21:11,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 12 [2024-11-18 13:21:11,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229364701] [2024-11-18 13:21:11,931 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:21:11,931 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-18 13:21:11,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:21:11,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-18 13:21:11,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-11-18 13:21:11,932 INFO L87 Difference]: Start difference. First operand 72 states and 105 transitions. Second operand has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:21:12,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:21:12,052 INFO L93 Difference]: Finished difference Result 101 states and 140 transitions. [2024-11-18 13:21:12,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-18 13:21:12,053 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-11-18 13:21:12,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:21:12,053 INFO L225 Difference]: With dead ends: 101 [2024-11-18 13:21:12,053 INFO L226 Difference]: Without dead ends: 84 [2024-11-18 13:21:12,054 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2024-11-18 13:21:12,054 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 8 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:21:12,055 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 64 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:21:12,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-11-18 13:21:12,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 68. [2024-11-18 13:21:12,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 1.4477611940298507) internal successors, (97), 67 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:21:12,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 97 transitions. [2024-11-18 13:21:12,073 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 97 transitions. Word has length 16 [2024-11-18 13:21:12,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:21:12,074 INFO L471 AbstractCegarLoop]: Abstraction has 68 states and 97 transitions. [2024-11-18 13:21:12,074 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:21:12,074 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 97 transitions. [2024-11-18 13:21:12,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-18 13:21:12,075 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:21:12,075 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:21:12,087 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-18 13:21:12,278 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:21:12,279 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:21:12,279 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:21:12,280 INFO L85 PathProgramCache]: Analyzing trace with hash 856936290, now seen corresponding path program 3 times [2024-11-18 13:21:12,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:21:12,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345978312] [2024-11-18 13:21:12,280 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 13:21:12,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:21:12,292 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-18 13:21:12,292 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:21:12,359 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-18 13:21:12,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:21:12,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345978312] [2024-11-18 13:21:12,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345978312] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:21:12,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1595817803] [2024-11-18 13:21:12,360 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 13:21:12,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:21:12,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:21:12,364 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) [2024-11-18 13:21:12,368 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-18 13:21:12,405 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-18 13:21:12,406 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:21:12,406 INFO L255 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-18 13:21:12,407 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:21:12,443 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 13:21:12,444 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:21:12,491 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 13:21:12,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1595817803] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:21:12,492 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:21:12,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 8 [2024-11-18 13:21:12,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828426321] [2024-11-18 13:21:12,492 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:21:12,492 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 13:21:12,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:21:12,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 13:21:12,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-18 13:21:12,494 INFO L87 Difference]: Start difference. First operand 68 states and 97 transitions. Second operand has 8 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:21:12,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:21:12,606 INFO L93 Difference]: Finished difference Result 111 states and 159 transitions. [2024-11-18 13:21:12,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-18 13:21:12,606 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 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 [2024-11-18 13:21:12,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:21:12,607 INFO L225 Difference]: With dead ends: 111 [2024-11-18 13:21:12,607 INFO L226 Difference]: Without dead ends: 106 [2024-11-18 13:21:12,608 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 28 SyntacticMatches, 4 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2024-11-18 13:21:12,608 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 15 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:21:12,608 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 72 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:21:12,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2024-11-18 13:21:12,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 95. [2024-11-18 13:21:12,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 94 states have (on average 1.4574468085106382) internal successors, (137), 94 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:21:12,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 137 transitions. [2024-11-18 13:21:12,631 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 137 transitions. Word has length 17 [2024-11-18 13:21:12,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:21:12,631 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 137 transitions. [2024-11-18 13:21:12,631 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:21:12,631 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 137 transitions. [2024-11-18 13:21:12,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-18 13:21:12,632 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:21:12,632 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:21:12,646 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-18 13:21:12,836 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:21:12,837 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:21:12,838 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:21:12,838 INFO L85 PathProgramCache]: Analyzing trace with hash 796886620, now seen corresponding path program 4 times [2024-11-18 13:21:12,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:21:12,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867255545] [2024-11-18 13:21:12,838 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 13:21:12,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:21:12,852 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 13:21:12,853 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:21:13,316 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:21:13,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:21:13,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867255545] [2024-11-18 13:21:13,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867255545] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:21:13,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1363068911] [2024-11-18 13:21:13,317 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 13:21:13,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:21:13,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:21:13,319 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) [2024-11-18 13:21:13,322 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-18 13:21:13,358 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 13:21:13,358 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:21:13,359 WARN L253 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-18 13:21:13,363 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:21:13,751 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:21:13,751 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:21:14,483 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:21:14,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1363068911] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:21:14,483 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:21:14,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 34 [2024-11-18 13:21:14,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051619025] [2024-11-18 13:21:14,483 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:21:14,483 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-18 13:21:14,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:21:14,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-18 13:21:14,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=1025, Unknown=0, NotChecked=0, Total=1122 [2024-11-18 13:21:14,484 INFO L87 Difference]: Start difference. First operand 95 states and 137 transitions. Second operand has 34 states, 34 states have (on average 1.3823529411764706) internal successors, (47), 34 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:21:15,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:21:15,595 INFO L93 Difference]: Finished difference Result 123 states and 166 transitions. [2024-11-18 13:21:15,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-18 13:21:15,596 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.3823529411764706) internal successors, (47), 34 states have internal predecessors, (47), 0 states have call successors, (0), 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 18 [2024-11-18 13:21:15,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:21:15,597 INFO L225 Difference]: With dead ends: 123 [2024-11-18 13:21:15,597 INFO L226 Difference]: Without dead ends: 90 [2024-11-18 13:21:15,598 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 13 SyntacticMatches, 4 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=234, Invalid=1746, Unknown=0, NotChecked=0, Total=1980 [2024-11-18 13:21:15,599 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 41 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 13:21:15,599 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 130 Invalid, 445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 395 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 13:21:15,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2024-11-18 13:21:15,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 87. [2024-11-18 13:21:15,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 86 states have (on average 1.441860465116279) internal successors, (124), 86 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:21:15,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 124 transitions. [2024-11-18 13:21:15,615 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 124 transitions. Word has length 18 [2024-11-18 13:21:15,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:21:15,615 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 124 transitions. [2024-11-18 13:21:15,615 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.3823529411764706) internal successors, (47), 34 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:21:15,615 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 124 transitions. [2024-11-18 13:21:15,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-18 13:21:15,616 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:21:15,616 INFO L215 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:21:15,633 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-18 13:21:15,817 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:21:15,817 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:21:15,818 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:21:15,818 INFO L85 PathProgramCache]: Analyzing trace with hash 469660332, now seen corresponding path program 5 times [2024-11-18 13:21:15,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:21:15,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112270437] [2024-11-18 13:21:15,818 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 13:21:15,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:21:15,830 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-18 13:21:15,830 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:21:15,947 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-18 13:21:15,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:21:15,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112270437] [2024-11-18 13:21:15,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112270437] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:21:15,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [700911108] [2024-11-18 13:21:15,949 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 13:21:15,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:21:15,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:21:15,950 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) [2024-11-18 13:21:15,952 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-18 13:21:15,986 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-18 13:21:15,986 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:21:15,987 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-18 13:21:15,988 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:21:16,004 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-18 13:21:16,005 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:21:16,113 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-18 13:21:16,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [700911108] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:21:16,113 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:21:16,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 19 [2024-11-18 13:21:16,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339192524] [2024-11-18 13:21:16,114 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:21:16,114 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-18 13:21:16,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:21:16,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-18 13:21:16,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2024-11-18 13:21:16,115 INFO L87 Difference]: Start difference. First operand 87 states and 124 transitions. Second operand has 19 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 19 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) [2024-11-18 13:21:17,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:21:17,461 INFO L93 Difference]: Finished difference Result 246 states and 392 transitions. [2024-11-18 13:21:17,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-11-18 13:21:17,461 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 19 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) Word has length 18 [2024-11-18 13:21:17,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:21:17,462 INFO L225 Difference]: With dead ends: 246 [2024-11-18 13:21:17,462 INFO L226 Difference]: Without dead ends: 221 [2024-11-18 13:21:17,463 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1047 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=963, Invalid=2577, Unknown=0, NotChecked=0, Total=3540 [2024-11-18 13:21:17,464 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 188 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 13:21:17,464 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 121 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 13:21:17,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2024-11-18 13:21:17,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 117. [2024-11-18 13:21:17,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 116 states have (on average 1.4482758620689655) internal successors, (168), 116 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:21:17,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 168 transitions. [2024-11-18 13:21:17,520 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 168 transitions. Word has length 18 [2024-11-18 13:21:17,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:21:17,521 INFO L471 AbstractCegarLoop]: Abstraction has 117 states and 168 transitions. [2024-11-18 13:21:17,521 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 19 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) [2024-11-18 13:21:17,521 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 168 transitions. [2024-11-18 13:21:17,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-18 13:21:17,522 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:21:17,522 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:21:17,556 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-18 13:21:17,722 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-18 13:21:17,723 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:21:17,724 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:21:17,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1979130930, now seen corresponding path program 6 times [2024-11-18 13:21:17,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:21:17,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52559040] [2024-11-18 13:21:17,724 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 13:21:17,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:21:17,735 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-18 13:21:17,735 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:21:17,809 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-18 13:21:17,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:21:17,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52559040] [2024-11-18 13:21:17,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52559040] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:21:17,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [985284737] [2024-11-18 13:21:17,810 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 13:21:17,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:21:17,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:21:17,812 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) [2024-11-18 13:21:17,812 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-18 13:21:17,849 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-18 13:21:17,850 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:21:17,851 INFO L255 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-18 13:21:17,851 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:21:17,885 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-18 13:21:17,885 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:21:17,967 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-18 13:21:17,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [985284737] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:21:17,967 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:21:17,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 18 [2024-11-18 13:21:17,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514604960] [2024-11-18 13:21:17,968 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:21:17,968 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-18 13:21:17,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:21:17,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-18 13:21:17,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2024-11-18 13:21:17,969 INFO L87 Difference]: Start difference. First operand 117 states and 168 transitions. Second operand has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 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) [2024-11-18 13:21:18,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:21:18,147 INFO L93 Difference]: Finished difference Result 162 states and 224 transitions. [2024-11-18 13:21:18,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-18 13:21:18,147 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-18 13:21:18,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:21:18,148 INFO L225 Difference]: With dead ends: 162 [2024-11-18 13:21:18,148 INFO L226 Difference]: Without dead ends: 138 [2024-11-18 13:21:18,149 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=367, Unknown=0, NotChecked=0, Total=462 [2024-11-18 13:21:18,149 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 12 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:21:18,149 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 66 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:21:18,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2024-11-18 13:21:18,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 112. [2024-11-18 13:21:18,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 1.4234234234234233) internal successors, (158), 111 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) [2024-11-18 13:21:18,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 158 transitions. [2024-11-18 13:21:18,169 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 158 transitions. Word has length 20 [2024-11-18 13:21:18,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:21:18,169 INFO L471 AbstractCegarLoop]: Abstraction has 112 states and 158 transitions. [2024-11-18 13:21:18,169 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 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) [2024-11-18 13:21:18,169 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 158 transitions. [2024-11-18 13:21:18,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-18 13:21:18,170 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:21:18,170 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:21:18,182 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-18 13:21:18,374 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-18 13:21:18,374 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:21:18,375 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:21:18,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1459852754, now seen corresponding path program 7 times [2024-11-18 13:21:18,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:21:18,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949601213] [2024-11-18 13:21:18,375 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-18 13:21:18,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:21:18,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:21:18,443 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-18 13:21:18,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:21:18,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949601213] [2024-11-18 13:21:18,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949601213] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:21:18,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2005287828] [2024-11-18 13:21:18,444 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-18 13:21:18,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:21:18,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:21:18,448 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) [2024-11-18 13:21:18,449 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-18 13:21:18,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:21:18,489 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-18 13:21:18,489 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:21:18,516 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-18 13:21:18,516 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:21:18,559 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-18 13:21:18,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2005287828] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:21:18,559 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:21:18,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 6 [2024-11-18 13:21:18,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901384679] [2024-11-18 13:21:18,560 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:21:18,560 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 13:21:18,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:21:18,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 13:21:18,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 13:21:18,561 INFO L87 Difference]: Start difference. First operand 112 states and 158 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:21:18,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:21:18,639 INFO L93 Difference]: Finished difference Result 132 states and 181 transitions. [2024-11-18 13:21:18,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 13:21:18,640 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 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 [2024-11-18 13:21:18,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:21:18,641 INFO L225 Difference]: With dead ends: 132 [2024-11-18 13:21:18,641 INFO L226 Difference]: Without dead ends: 128 [2024-11-18 13:21:18,641 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 36 SyntacticMatches, 8 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-18 13:21:18,641 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 11 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:21:18,641 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 65 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:21:18,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2024-11-18 13:21:18,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 122. [2024-11-18 13:21:18,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 121 states have (on average 1.4049586776859504) internal successors, (170), 121 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:21:18,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 170 transitions. [2024-11-18 13:21:18,666 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 170 transitions. Word has length 21 [2024-11-18 13:21:18,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:21:18,666 INFO L471 AbstractCegarLoop]: Abstraction has 122 states and 170 transitions. [2024-11-18 13:21:18,666 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:21:18,666 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 170 transitions. [2024-11-18 13:21:18,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-18 13:21:18,666 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:21:18,667 INFO L215 NwaCegarLoop]: trace histogram [11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:21:18,679 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-18 13:21:18,870 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-18 13:21:18,871 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:21:18,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:21:18,871 INFO L85 PathProgramCache]: Analyzing trace with hash 401524257, now seen corresponding path program 3 times [2024-11-18 13:21:18,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:21:18,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383404163] [2024-11-18 13:21:18,872 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 13:21:18,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:21:18,882 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-18 13:21:18,883 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:21:19,037 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:21:19,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:21:19,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383404163] [2024-11-18 13:21:19,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383404163] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:21:19,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1146113946] [2024-11-18 13:21:19,037 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 13:21:19,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:21:19,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:21:19,038 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) [2024-11-18 13:21:19,040 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-18 13:21:19,081 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-18 13:21:19,081 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:21:19,082 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-18 13:21:19,082 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:21:19,107 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:21:19,107 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:21:19,329 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:21:19,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1146113946] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:21:19,329 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:21:19,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 27 [2024-11-18 13:21:19,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560945231] [2024-11-18 13:21:19,329 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:21:19,330 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-18 13:21:19,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:21:19,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-18 13:21:19,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=506, Unknown=0, NotChecked=0, Total=702 [2024-11-18 13:21:19,330 INFO L87 Difference]: Start difference. First operand 122 states and 170 transitions. Second operand has 27 states, 27 states have (on average 1.5555555555555556) internal successors, (42), 27 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:21:22,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:21:22,425 INFO L93 Difference]: Finished difference Result 608 states and 998 transitions. [2024-11-18 13:21:22,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-18 13:21:22,425 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.5555555555555556) internal successors, (42), 27 states have internal predecessors, (42), 0 states have call successors, (0), 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 [2024-11-18 13:21:22,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:21:22,427 INFO L225 Difference]: With dead ends: 608 [2024-11-18 13:21:22,427 INFO L226 Difference]: Without dead ends: 550 [2024-11-18 13:21:22,428 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 541 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1073, Invalid=2349, Unknown=0, NotChecked=0, Total=3422 [2024-11-18 13:21:22,428 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 533 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 473 mSolverCounterSat, 351 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 533 SdHoareTripleChecker+Valid, 484 SdHoareTripleChecker+Invalid, 824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 351 IncrementalHoareTripleChecker+Valid, 473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-18 13:21:22,429 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [533 Valid, 484 Invalid, 824 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [351 Valid, 473 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-18 13:21:22,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2024-11-18 13:21:22,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 207. [2024-11-18 13:21:22,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 206 states have (on average 1.3689320388349515) internal successors, (282), 206 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:21:22,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 282 transitions. [2024-11-18 13:21:22,490 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 282 transitions. Word has length 21 [2024-11-18 13:21:22,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:21:22,490 INFO L471 AbstractCegarLoop]: Abstraction has 207 states and 282 transitions. [2024-11-18 13:21:22,490 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.5555555555555556) internal successors, (42), 27 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:21:22,490 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 282 transitions. [2024-11-18 13:21:22,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-18 13:21:22,490 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:21:22,490 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:21:22,503 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-18 13:21:22,694 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-18 13:21:22,695 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:21:22,695 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:21:22,695 INFO L85 PathProgramCache]: Analyzing trace with hash -1987539476, now seen corresponding path program 8 times [2024-11-18 13:21:22,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:21:22,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353763291] [2024-11-18 13:21:22,695 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 13:21:22,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:21:22,708 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 13:21:22,708 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:21:22,969 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-18 13:21:22,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:21:22,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353763291] [2024-11-18 13:21:22,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353763291] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:21:22,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1707828477] [2024-11-18 13:21:22,970 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 13:21:22,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:21:22,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:21:22,972 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) [2024-11-18 13:21:22,973 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-18 13:21:23,029 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 13:21:23,029 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:21:23,030 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-18 13:21:23,031 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:21:23,372 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:21:23,373 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:21:23,697 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:21:23,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1707828477] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:21:23,697 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:21:23,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 34 [2024-11-18 13:21:23,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54212163] [2024-11-18 13:21:23,698 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:21:23,698 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-18 13:21:23,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:21:23,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-18 13:21:23,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=1029, Unknown=0, NotChecked=0, Total=1122 [2024-11-18 13:21:23,698 INFO L87 Difference]: Start difference. First operand 207 states and 282 transitions. Second operand has 34 states, 34 states have (on average 1.5294117647058822) internal successors, (52), 34 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:21:24,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:21:24,536 INFO L93 Difference]: Finished difference Result 228 states and 305 transitions. [2024-11-18 13:21:24,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-18 13:21:24,536 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.5294117647058822) internal successors, (52), 34 states have internal predecessors, (52), 0 states have call successors, (0), 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 22 [2024-11-18 13:21:24,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:21:24,537 INFO L225 Difference]: With dead ends: 228 [2024-11-18 13:21:24,537 INFO L226 Difference]: Without dead ends: 201 [2024-11-18 13:21:24,538 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 15 SyntacticMatches, 11 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 513 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=224, Invalid=1846, Unknown=0, NotChecked=0, Total=2070 [2024-11-18 13:21:24,539 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 35 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 420 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 13:21:24,539 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 98 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 420 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 13:21:24,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2024-11-18 13:21:24,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 199. [2024-11-18 13:21:24,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 198 states have (on average 1.3686868686868687) internal successors, (271), 198 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:21:24,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 271 transitions. [2024-11-18 13:21:24,625 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 271 transitions. Word has length 22 [2024-11-18 13:21:24,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:21:24,625 INFO L471 AbstractCegarLoop]: Abstraction has 199 states and 271 transitions. [2024-11-18 13:21:24,625 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.5294117647058822) internal successors, (52), 34 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:21:24,625 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 271 transitions. [2024-11-18 13:21:24,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-18 13:21:24,626 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:21:24,626 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:21:24,638 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-18 13:21:24,826 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,SelfDestructingSolverStorable15 [2024-11-18 13:21:24,827 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:21:24,827 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:21:24,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1912260034, now seen corresponding path program 2 times [2024-11-18 13:21:24,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:21:24,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018633952] [2024-11-18 13:21:24,827 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 13:21:24,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:21:24,839 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 13:21:24,840 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:21:24,958 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-18 13:21:24,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:21:24,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018633952] [2024-11-18 13:21:24,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018633952] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:21:24,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2055934286] [2024-11-18 13:21:24,958 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 13:21:24,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:21:24,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:21:24,960 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) [2024-11-18 13:21:24,964 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-18 13:21:24,997 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 13:21:24,997 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:21:24,998 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-18 13:21:24,998 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:21:25,099 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-18 13:21:25,099 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:21:25,234 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-18 13:21:25,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2055934286] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:21:25,234 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:21:25,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8, 8] total 25 [2024-11-18 13:21:25,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900192887] [2024-11-18 13:21:25,234 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:21:25,234 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-18 13:21:25,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:21:25,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-18 13:21:25,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=518, Unknown=0, NotChecked=0, Total=600 [2024-11-18 13:21:25,235 INFO L87 Difference]: Start difference. First operand 199 states and 271 transitions. Second operand has 25 states, 25 states have (on average 1.76) internal successors, (44), 25 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) [2024-11-18 13:21:26,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:21:26,191 INFO L93 Difference]: Finished difference Result 391 states and 539 transitions. [2024-11-18 13:21:26,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-18 13:21:26,191 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.76) internal successors, (44), 25 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 23 [2024-11-18 13:21:26,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:21:26,195 INFO L225 Difference]: With dead ends: 391 [2024-11-18 13:21:26,195 INFO L226 Difference]: Without dead ends: 365 [2024-11-18 13:21:26,196 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=454, Invalid=1898, Unknown=0, NotChecked=0, Total=2352 [2024-11-18 13:21:26,200 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 96 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 609 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 13:21:26,201 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 240 Invalid, 698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 609 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 13:21:26,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2024-11-18 13:21:26,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 266. [2024-11-18 13:21:26,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 265 states have (on average 1.4641509433962263) internal successors, (388), 265 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:21:26,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 388 transitions. [2024-11-18 13:21:26,391 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 388 transitions. Word has length 23 [2024-11-18 13:21:26,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:21:26,391 INFO L471 AbstractCegarLoop]: Abstraction has 266 states and 388 transitions. [2024-11-18 13:21:26,391 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.76) internal successors, (44), 25 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) [2024-11-18 13:21:26,392 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 388 transitions. [2024-11-18 13:21:26,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-18 13:21:26,392 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:21:26,393 INFO L215 NwaCegarLoop]: trace histogram [12, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:21:26,410 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-18 13:21:26,593 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,SelfDestructingSolverStorable16 [2024-11-18 13:21:26,593 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:21:26,594 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:21:26,594 INFO L85 PathProgramCache]: Analyzing trace with hash 135817212, now seen corresponding path program 1 times [2024-11-18 13:21:26,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:21:26,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931704224] [2024-11-18 13:21:26,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:21:26,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:21:26,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:21:26,800 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-18 13:21:26,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:21:26,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931704224] [2024-11-18 13:21:26,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931704224] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:21:26,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [960962390] [2024-11-18 13:21:26,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:21:26,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:21:26,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:21:26,803 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) [2024-11-18 13:21:26,806 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-18 13:21:26,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:21:26,859 INFO L255 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-18 13:21:26,861 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:21:26,911 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-18 13:21:26,911 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:21:26,954 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2024-11-18 13:21:26,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [960962390] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-18 13:21:26,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-18 13:21:26,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [16, 16] total 19 [2024-11-18 13:21:26,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865531048] [2024-11-18 13:21:26,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:21:26,954 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 13:21:26,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:21:26,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 13:21:26,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2024-11-18 13:21:26,955 INFO L87 Difference]: Start difference. First operand 266 states and 388 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:21:27,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:21:27,058 INFO L93 Difference]: Finished difference Result 272 states and 394 transitions. [2024-11-18 13:21:27,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 13:21:27,058 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-11-18 13:21:27,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:21:27,060 INFO L225 Difference]: With dead ends: 272 [2024-11-18 13:21:27,060 INFO L226 Difference]: Without dead ends: 252 [2024-11-18 13:21:27,060 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2024-11-18 13:21:27,060 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:21:27,061 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 17 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:21:27,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2024-11-18 13:21:27,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 252. [2024-11-18 13:21:27,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 251 states have (on average 1.4780876494023905) internal successors, (371), 251 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:21:27,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 371 transitions. [2024-11-18 13:21:27,149 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 371 transitions. Word has length 24 [2024-11-18 13:21:27,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:21:27,150 INFO L471 AbstractCegarLoop]: Abstraction has 252 states and 371 transitions. [2024-11-18 13:21:27,150 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:21:27,150 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 371 transitions. [2024-11-18 13:21:27,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-18 13:21:27,150 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:21:27,150 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:21:27,162 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-18 13:21:27,350 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:21:27,351 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:21:27,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:21:27,351 INFO L85 PathProgramCache]: Analyzing trace with hash -955275428, now seen corresponding path program 9 times [2024-11-18 13:21:27,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:21:27,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183716122] [2024-11-18 13:21:27,351 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 13:21:27,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:21:27,376 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-18 13:21:27,376 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:21:27,675 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-18 13:21:27,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:21:27,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183716122] [2024-11-18 13:21:27,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183716122] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:21:27,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [736372930] [2024-11-18 13:21:27,676 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 13:21:27,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:21:27,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:21:27,678 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) [2024-11-18 13:21:27,679 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-18 13:21:27,808 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-18 13:21:27,808 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:21:27,813 WARN L253 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 68 conjuncts are in the unsatisfiable core [2024-11-18 13:21:27,816 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:21:28,399 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:21:28,400 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:21:28,841 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:21:28,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [736372930] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:21:28,841 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:21:28,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 22, 18] total 45 [2024-11-18 13:21:28,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208999886] [2024-11-18 13:21:28,841 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:21:28,843 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-11-18 13:21:28,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:21:28,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-11-18 13:21:28,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=1778, Unknown=0, NotChecked=0, Total=1980 [2024-11-18 13:21:28,846 INFO L87 Difference]: Start difference. First operand 252 states and 371 transitions. Second operand has 45 states, 45 states have (on average 1.3333333333333333) internal successors, (60), 45 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) [2024-11-18 13:21:29,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:21:29,493 INFO L93 Difference]: Finished difference Result 267 states and 385 transitions. [2024-11-18 13:21:29,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-18 13:21:29,494 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 1.3333333333333333) internal successors, (60), 45 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 26 [2024-11-18 13:21:29,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:21:29,495 INFO L225 Difference]: With dead ends: 267 [2024-11-18 13:21:29,495 INFO L226 Difference]: Without dead ends: 247 [2024-11-18 13:21:29,499 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 13 SyntacticMatches, 13 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 844 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=315, Invalid=2547, Unknown=0, NotChecked=0, Total=2862 [2024-11-18 13:21:29,499 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 15 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 630 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 13:21:29,499 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 132 Invalid, 648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 630 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 13:21:29,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2024-11-18 13:21:29,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 246. [2024-11-18 13:21:29,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 245 states have (on average 1.4857142857142858) internal successors, (364), 245 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:21:29,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 364 transitions. [2024-11-18 13:21:29,589 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 364 transitions. Word has length 26 [2024-11-18 13:21:29,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:21:29,589 INFO L471 AbstractCegarLoop]: Abstraction has 246 states and 364 transitions. [2024-11-18 13:21:29,593 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 1.3333333333333333) internal successors, (60), 45 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) [2024-11-18 13:21:29,593 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 364 transitions. [2024-11-18 13:21:29,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-18 13:21:29,593 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:21:29,593 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:21:29,614 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-18 13:21:29,793 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:21:29,794 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:21:29,794 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:21:29,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1647164496, now seen corresponding path program 10 times [2024-11-18 13:21:29,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:21:29,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975856435] [2024-11-18 13:21:29,794 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 13:21:29,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:21:29,808 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 13:21:29,808 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:21:29,938 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-18 13:21:29,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:21:29,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975856435] [2024-11-18 13:21:29,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975856435] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:21:29,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1267563435] [2024-11-18 13:21:29,939 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 13:21:29,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:21:29,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:21:29,940 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) [2024-11-18 13:21:29,942 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-18 13:21:29,984 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 13:21:29,984 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:21:29,984 INFO L255 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-18 13:21:29,985 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:21:30,029 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-18 13:21:30,029 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:21:30,319 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-18 13:21:30,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1267563435] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:21:30,319 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:21:30,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 15] total 28 [2024-11-18 13:21:30,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528317056] [2024-11-18 13:21:30,319 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:21:30,319 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-18 13:21:30,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:21:30,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-18 13:21:30,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=629, Unknown=0, NotChecked=0, Total=756 [2024-11-18 13:21:30,320 INFO L87 Difference]: Start difference. First operand 246 states and 364 transitions. Second operand has 28 states, 28 states have (on average 1.4285714285714286) internal successors, (40), 28 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:21:34,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:21:34,448 INFO L93 Difference]: Finished difference Result 473 states and 627 transitions. [2024-11-18 13:21:34,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2024-11-18 13:21:34,448 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.4285714285714286) internal successors, (40), 28 states have internal predecessors, (40), 0 states have call successors, (0), 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 27 [2024-11-18 13:21:34,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:21:34,450 INFO L225 Difference]: With dead ends: 473 [2024-11-18 13:21:34,450 INFO L226 Difference]: Without dead ends: 406 [2024-11-18 13:21:34,452 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3932 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=1826, Invalid=11514, Unknown=0, NotChecked=0, Total=13340 [2024-11-18 13:21:34,452 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 281 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 440 mSolverCounterSat, 223 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 223 IncrementalHoareTripleChecker+Valid, 440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 13:21:34,453 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [281 Valid, 157 Invalid, 663 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [223 Valid, 440 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 13:21:34,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2024-11-18 13:21:34,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 239. [2024-11-18 13:21:34,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 238 states have (on average 1.3907563025210083) internal successors, (331), 238 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:21:34,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 331 transitions. [2024-11-18 13:21:34,542 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 331 transitions. Word has length 27 [2024-11-18 13:21:34,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:21:34,542 INFO L471 AbstractCegarLoop]: Abstraction has 239 states and 331 transitions. [2024-11-18 13:21:34,542 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.4285714285714286) internal successors, (40), 28 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:21:34,543 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 331 transitions. [2024-11-18 13:21:34,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-18 13:21:34,543 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:21:34,543 INFO L215 NwaCegarLoop]: trace histogram [12, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:21:34,555 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-18 13:21:34,747 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:21:34,747 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:21:34,748 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:21:34,748 INFO L85 PathProgramCache]: Analyzing trace with hash 691619196, now seen corresponding path program 11 times [2024-11-18 13:21:34,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:21:34,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212373871] [2024-11-18 13:21:34,748 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 13:21:34,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:21:34,758 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2024-11-18 13:21:34,760 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:21:34,935 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-18 13:21:34,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:21:34,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212373871] [2024-11-18 13:21:34,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212373871] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:21:34,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [569048671] [2024-11-18 13:21:34,936 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 13:21:34,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:21:34,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:21:34,938 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) [2024-11-18 13:21:34,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-18 13:21:35,011 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2024-11-18 13:21:35,011 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:21:35,012 INFO L255 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-18 13:21:35,013 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:21:35,048 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-18 13:21:35,048 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:21:35,453 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-18 13:21:35,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [569048671] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:21:35,453 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:21:35,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 35 [2024-11-18 13:21:35,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030286885] [2024-11-18 13:21:35,453 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:21:35,453 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-18 13:21:35,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:21:35,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-18 13:21:35,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=248, Invalid=942, Unknown=0, NotChecked=0, Total=1190 [2024-11-18 13:21:35,454 INFO L87 Difference]: Start difference. First operand 239 states and 331 transitions. Second operand has 35 states, 35 states have (on average 1.3142857142857143) internal successors, (46), 35 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:21:49,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:21:49,036 INFO L93 Difference]: Finished difference Result 749 states and 1134 transitions. [2024-11-18 13:21:49,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 157 states. [2024-11-18 13:21:49,036 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.3142857142857143) internal successors, (46), 35 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2024-11-18 13:21:49,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:21:49,038 INFO L225 Difference]: With dead ends: 749 [2024-11-18 13:21:49,038 INFO L226 Difference]: Without dead ends: 697 [2024-11-18 13:21:49,042 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11787 ImplicationChecksByTransitivity, 12.1s TimeCoverageRelationStatistics Valid=7326, Invalid=23124, Unknown=0, NotChecked=0, Total=30450 [2024-11-18 13:21:49,043 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 1118 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 958 mSolverCounterSat, 612 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1118 SdHoareTripleChecker+Valid, 403 SdHoareTripleChecker+Invalid, 1570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 612 IncrementalHoareTripleChecker+Valid, 958 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-18 13:21:49,044 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1118 Valid, 403 Invalid, 1570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [612 Valid, 958 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-18 13:21:49,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2024-11-18 13:21:49,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 302. [2024-11-18 13:21:49,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 301 states have (on average 1.451827242524917) internal successors, (437), 301 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:21:49,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 437 transitions. [2024-11-18 13:21:49,177 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 437 transitions. Word has length 28 [2024-11-18 13:21:49,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:21:49,177 INFO L471 AbstractCegarLoop]: Abstraction has 302 states and 437 transitions. [2024-11-18 13:21:49,177 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.3142857142857143) internal successors, (46), 35 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:21:49,177 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 437 transitions. [2024-11-18 13:21:49,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-18 13:21:49,178 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:21:49,178 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:21:49,190 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-18 13:21:49,378 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:21:49,379 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:21:49,379 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:21:49,379 INFO L85 PathProgramCache]: Analyzing trace with hash 755334882, now seen corresponding path program 12 times [2024-11-18 13:21:49,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:21:49,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295495817] [2024-11-18 13:21:49,379 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 13:21:49,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:21:49,401 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-18 13:21:49,402 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:21:49,497 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-18 13:21:49,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:21:49,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295495817] [2024-11-18 13:21:49,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295495817] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:21:49,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [823822130] [2024-11-18 13:21:49,498 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 13:21:49,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:21:49,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:21:49,499 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) [2024-11-18 13:21:49,502 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-18 13:21:49,545 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-18 13:21:49,545 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:21:49,545 INFO L255 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-18 13:21:49,546 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:21:49,673 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 10 proven. 32 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-18 13:21:49,674 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:21:49,848 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 10 proven. 32 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-18 13:21:49,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [823822130] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:21:49,849 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:21:49,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 17 [2024-11-18 13:21:49,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684874521] [2024-11-18 13:21:49,849 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:21:49,849 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-18 13:21:49,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:21:49,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-18 13:21:49,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2024-11-18 13:21:49,850 INFO L87 Difference]: Start difference. First operand 302 states and 437 transitions. Second operand has 17 states, 17 states have (on average 2.176470588235294) internal successors, (37), 17 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:21:51,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:21:51,303 INFO L93 Difference]: Finished difference Result 497 states and 705 transitions. [2024-11-18 13:21:51,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-18 13:21:51,304 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.176470588235294) internal successors, (37), 17 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2024-11-18 13:21:51,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:21:51,305 INFO L225 Difference]: With dead ends: 497 [2024-11-18 13:21:51,305 INFO L226 Difference]: Without dead ends: 492 [2024-11-18 13:21:51,306 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 43 SyntacticMatches, 12 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=413, Invalid=847, Unknown=0, NotChecked=0, Total=1260 [2024-11-18 13:21:51,306 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 155 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 13:21:51,306 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 181 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 13:21:51,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2024-11-18 13:21:51,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 368. [2024-11-18 13:21:51,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 367 states have (on average 1.4550408719346049) internal successors, (534), 367 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:21:51,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 534 transitions. [2024-11-18 13:21:51,488 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 534 transitions. Word has length 29 [2024-11-18 13:21:51,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:21:51,488 INFO L471 AbstractCegarLoop]: Abstraction has 368 states and 534 transitions. [2024-11-18 13:21:51,488 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.176470588235294) internal successors, (37), 17 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:21:51,489 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 534 transitions. [2024-11-18 13:21:51,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-18 13:21:51,489 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:21:51,489 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:21:51,504 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-18 13:21:51,693 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:21:51,693 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:21:51,694 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:21:51,694 INFO L85 PathProgramCache]: Analyzing trace with hash -1507034516, now seen corresponding path program 13 times [2024-11-18 13:21:51,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:21:51,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020330986] [2024-11-18 13:21:51,694 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-18 13:21:51,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:21:51,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:21:52,142 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:21:52,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:21:52,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020330986] [2024-11-18 13:21:52,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020330986] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:21:52,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [445190876] [2024-11-18 13:21:52,144 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-18 13:21:52,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:21:52,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:21:52,145 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) [2024-11-18 13:21:52,147 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-18 13:21:52,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:21:52,270 WARN L253 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 80 conjuncts are in the unsatisfiable core [2024-11-18 13:21:52,271 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:21:52,971 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:21:52,971 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:21:54,754 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:21:54,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [445190876] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:21:54,755 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:21:54,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 26, 26] total 67 [2024-11-18 13:21:54,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371852515] [2024-11-18 13:21:54,755 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:21:54,755 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2024-11-18 13:21:54,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:21:54,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2024-11-18 13:21:54,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=4226, Unknown=0, NotChecked=0, Total=4422 [2024-11-18 13:21:54,757 INFO L87 Difference]: Start difference. First operand 368 states and 534 transitions. Second operand has 67 states, 67 states have (on average 1.2537313432835822) internal successors, (84), 67 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:21:59,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:21:59,598 INFO L93 Difference]: Finished difference Result 399 states and 564 transitions. [2024-11-18 13:21:59,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-11-18 13:21:59,598 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 1.2537313432835822) internal successors, (84), 67 states have internal predecessors, (84), 0 states have call successors, (0), 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 30 [2024-11-18 13:21:59,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:21:59,600 INFO L225 Difference]: With dead ends: 399 [2024-11-18 13:21:59,600 INFO L226 Difference]: Without dead ends: 376 [2024-11-18 13:21:59,601 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1292 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=969, Invalid=8733, Unknown=0, NotChecked=0, Total=9702 [2024-11-18 13:21:59,602 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 151 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 1290 mSolverCounterSat, 303 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 1593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 303 IncrementalHoareTripleChecker+Valid, 1290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:21:59,602 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 257 Invalid, 1593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [303 Valid, 1290 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-18 13:21:59,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2024-11-18 13:21:59,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 361. [2024-11-18 13:21:59,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 360 states have (on average 1.461111111111111) internal successors, (526), 360 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:21:59,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 526 transitions. [2024-11-18 13:21:59,881 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 526 transitions. Word has length 30 [2024-11-18 13:21:59,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:21:59,881 INFO L471 AbstractCegarLoop]: Abstraction has 361 states and 526 transitions. [2024-11-18 13:21:59,881 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 1.2537313432835822) internal successors, (84), 67 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:21:59,882 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 526 transitions. [2024-11-18 13:21:59,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-18 13:21:59,882 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:21:59,882 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:21:59,902 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-18 13:22:00,083 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:22:00,083 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:22:00,083 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:22:00,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1439458116, now seen corresponding path program 14 times [2024-11-18 13:22:00,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:22:00,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267578779] [2024-11-18 13:22:00,084 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 13:22:00,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:22:00,098 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 13:22:00,098 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:22:00,317 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-18 13:22:00,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:22:00,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267578779] [2024-11-18 13:22:00,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267578779] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:22:00,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [922544781] [2024-11-18 13:22:00,318 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 13:22:00,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:22:00,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:22:00,320 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) [2024-11-18 13:22:00,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-18 13:22:00,382 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 13:22:00,383 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:22:00,384 INFO L255 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-18 13:22:00,385 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:22:00,590 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 12 proven. 40 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-18 13:22:00,591 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:22:00,877 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 12 proven. 40 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-18 13:22:00,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [922544781] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:22:00,877 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:22:00,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 10, 10] total 25 [2024-11-18 13:22:00,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195619529] [2024-11-18 13:22:00,878 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:22:00,878 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-18 13:22:00,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:22:00,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-18 13:22:00,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=551, Unknown=0, NotChecked=0, Total=600 [2024-11-18 13:22:00,879 INFO L87 Difference]: Start difference. First operand 361 states and 526 transitions. Second operand has 25 states, 25 states have (on average 1.88) internal successors, (47), 25 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:22:02,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:22:02,552 INFO L93 Difference]: Finished difference Result 441 states and 616 transitions. [2024-11-18 13:22:02,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-11-18 13:22:02,552 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.88) internal successors, (47), 25 states have internal predecessors, (47), 0 states have call successors, (0), 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 32 [2024-11-18 13:22:02,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:22:02,553 INFO L225 Difference]: With dead ends: 441 [2024-11-18 13:22:02,553 INFO L226 Difference]: Without dead ends: 403 [2024-11-18 13:22:02,554 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 44 SyntacticMatches, 14 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 814 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=407, Invalid=3499, Unknown=0, NotChecked=0, Total=3906 [2024-11-18 13:22:02,554 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 95 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 861 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 901 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 861 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 13:22:02,554 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 216 Invalid, 901 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 861 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 13:22:02,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2024-11-18 13:22:02,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 374. [2024-11-18 13:22:02,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 373 states have (on average 1.4316353887399464) internal successors, (534), 373 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:22:02,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 534 transitions. [2024-11-18 13:22:02,756 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 534 transitions. Word has length 32 [2024-11-18 13:22:02,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:22:02,757 INFO L471 AbstractCegarLoop]: Abstraction has 374 states and 534 transitions. [2024-11-18 13:22:02,757 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.88) internal successors, (47), 25 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:22:02,757 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 534 transitions. [2024-11-18 13:22:02,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-18 13:22:02,757 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:22:02,757 INFO L215 NwaCegarLoop]: trace histogram [13, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:22:02,770 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-18 13:22:02,961 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,SelfDestructingSolverStorable23 [2024-11-18 13:22:02,962 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:22:02,962 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:22:02,962 INFO L85 PathProgramCache]: Analyzing trace with hash -2079474420, now seen corresponding path program 15 times [2024-11-18 13:22:02,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:22:02,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465989981] [2024-11-18 13:22:02,962 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 13:22:02,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:22:02,979 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2024-11-18 13:22:02,980 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:22:03,190 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 0 proven. 97 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-18 13:22:03,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:22:03,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465989981] [2024-11-18 13:22:03,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465989981] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:22:03,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2096540691] [2024-11-18 13:22:03,190 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 13:22:03,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:22:03,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:22:03,192 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) [2024-11-18 13:22:03,193 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-18 13:22:03,263 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2024-11-18 13:22:03,263 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:22:03,264 INFO L255 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-18 13:22:03,264 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:22:03,317 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 0 proven. 97 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-18 13:22:03,317 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:22:03,738 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 0 proven. 97 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-18 13:22:03,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2096540691] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:22:03,739 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:22:03,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 41 [2024-11-18 13:22:03,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780476021] [2024-11-18 13:22:03,739 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:22:03,739 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-18 13:22:03,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:22:03,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-18 13:22:03,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=337, Invalid=1303, Unknown=0, NotChecked=0, Total=1640 [2024-11-18 13:22:03,740 INFO L87 Difference]: Start difference. First operand 374 states and 534 transitions. Second operand has 41 states, 41 states have (on average 1.2926829268292683) internal successors, (53), 41 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) [2024-11-18 13:22:26,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:22:26,867 INFO L93 Difference]: Finished difference Result 1127 states and 1665 transitions. [2024-11-18 13:22:26,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 208 states. [2024-11-18 13:22:26,868 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 1.2926829268292683) internal successors, (53), 41 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) Word has length 32 [2024-11-18 13:22:26,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:22:26,870 INFO L225 Difference]: With dead ends: 1127 [2024-11-18 13:22:26,870 INFO L226 Difference]: Without dead ends: 1032 [2024-11-18 13:22:26,873 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 227 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21374 ImplicationChecksByTransitivity, 20.5s TimeCoverageRelationStatistics Valid=11421, Invalid=40791, Unknown=0, NotChecked=0, Total=52212 [2024-11-18 13:22:26,873 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 1289 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 1196 mSolverCounterSat, 797 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1289 SdHoareTripleChecker+Valid, 440 SdHoareTripleChecker+Invalid, 1993 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 797 IncrementalHoareTripleChecker+Valid, 1196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-18 13:22:26,873 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1289 Valid, 440 Invalid, 1993 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [797 Valid, 1196 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-18 13:22:26,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1032 states. [2024-11-18 13:22:27,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1032 to 394. [2024-11-18 13:22:27,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 393 states have (on average 1.4961832061068703) internal successors, (588), 393 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:22:27,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 588 transitions. [2024-11-18 13:22:27,111 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 588 transitions. Word has length 32 [2024-11-18 13:22:27,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:22:27,111 INFO L471 AbstractCegarLoop]: Abstraction has 394 states and 588 transitions. [2024-11-18 13:22:27,111 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 1.2926829268292683) internal successors, (53), 41 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) [2024-11-18 13:22:27,111 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 588 transitions. [2024-11-18 13:22:27,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-18 13:22:27,112 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:22:27,112 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:22:27,125 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-18 13:22:27,316 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,SelfDestructingSolverStorable24 [2024-11-18 13:22:27,317 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:22:27,317 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:22:27,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1134925732, now seen corresponding path program 16 times [2024-11-18 13:22:27,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:22:27,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259992392] [2024-11-18 13:22:27,317 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 13:22:27,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:22:27,343 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 13:22:27,344 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:22:27,880 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:22:27,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:22:27,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259992392] [2024-11-18 13:22:27,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259992392] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:22:27,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1079413406] [2024-11-18 13:22:27,881 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 13:22:27,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:22:27,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:22:27,882 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) [2024-11-18 13:22:27,883 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-18 13:22:28,012 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 13:22:28,012 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:22:28,014 WARN L253 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 99 conjuncts are in the unsatisfiable core [2024-11-18 13:22:28,018 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:22:29,190 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:22:29,190 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:22:31,032 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:22:31,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1079413406] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:22:31,032 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:22:31,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 31, 30] total 80 [2024-11-18 13:22:31,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676839965] [2024-11-18 13:22:31,033 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:22:31,033 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2024-11-18 13:22:31,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:22:31,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2024-11-18 13:22:31,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=674, Invalid=5646, Unknown=0, NotChecked=0, Total=6320 [2024-11-18 13:22:31,035 INFO L87 Difference]: Start difference. First operand 394 states and 588 transitions. Second operand has 80 states, 80 states have (on average 1.2125) internal successors, (97), 80 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:22:34,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:22:34,509 INFO L93 Difference]: Finished difference Result 426 states and 619 transitions. [2024-11-18 13:22:34,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-11-18 13:22:34,510 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 80 states have (on average 1.2125) internal successors, (97), 80 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2024-11-18 13:22:34,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:22:34,511 INFO L225 Difference]: With dead ends: 426 [2024-11-18 13:22:34,511 INFO L226 Difference]: Without dead ends: 400 [2024-11-18 13:22:34,512 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2831 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=1593, Invalid=9963, Unknown=0, NotChecked=0, Total=11556 [2024-11-18 13:22:34,512 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 144 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 1323 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 1435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 1323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-18 13:22:34,512 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 242 Invalid, 1435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 1323 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-18 13:22:34,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2024-11-18 13:22:34,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 379. [2024-11-18 13:22:34,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 378 states have (on average 1.5132275132275133) internal successors, (572), 378 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:22:34,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 572 transitions. [2024-11-18 13:22:34,775 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 572 transitions. Word has length 34 [2024-11-18 13:22:34,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:22:34,775 INFO L471 AbstractCegarLoop]: Abstraction has 379 states and 572 transitions. [2024-11-18 13:22:34,775 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 80 states have (on average 1.2125) internal successors, (97), 80 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:22:34,775 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 572 transitions. [2024-11-18 13:22:34,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-18 13:22:34,776 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:22:34,776 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:22:34,794 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-18 13:22:34,976 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-18 13:22:34,976 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:22:34,977 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:22:34,977 INFO L85 PathProgramCache]: Analyzing trace with hash 1145137554, now seen corresponding path program 17 times [2024-11-18 13:22:34,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:22:34,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464774363] [2024-11-18 13:22:34,979 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 13:22:34,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:22:35,005 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-11-18 13:22:35,009 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:22:35,469 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 22 proven. 38 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-18 13:22:35,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:22:35,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464774363] [2024-11-18 13:22:35,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464774363] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:22:35,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [888561160] [2024-11-18 13:22:35,469 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 13:22:35,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:22:35,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:22:35,473 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:22:35,474 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-18 13:22:35,593 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-11-18 13:22:35,593 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:22:35,594 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-18 13:22:35,595 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:22:35,749 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 15 proven. 41 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-18 13:22:35,749 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:22:35,962 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 15 proven. 41 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-18 13:22:35,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [888561160] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:22:35,963 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:22:35,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 10, 10] total 23 [2024-11-18 13:22:35,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614479994] [2024-11-18 13:22:35,963 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:22:35,963 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-18 13:22:35,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:22:35,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-18 13:22:35,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=402, Unknown=0, NotChecked=0, Total=506 [2024-11-18 13:22:35,964 INFO L87 Difference]: Start difference. First operand 379 states and 572 transitions. Second operand has 23 states, 23 states have (on average 2.0) internal successors, (46), 23 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:22:42,185 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []